JP2015045129A - Blind control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a blind control system allowing each blind to be appropriately controlled according to ambient environment, and having high control information responsibility and low cost.SOLUTION: An inventive blind control system S1 is installed facing a window w1, and includes: an automatic blind 1 in which the height and the inclination of a slat 1a blocking outdoor light can be automatically changed; sensors s1, s2 for measuring illuminance in the outside of the window; and first control means 2 for calculating and controlling the height and the inclination of the slat 1a of the automatic blind 1. The control means 2 is installed corresponding to the automatic blind 1 in a one-to-one relationship, and calculates and controls the automatic blind 1 uniquely.

Description

  The present invention relates to a blind control system capable of performing control suitable for each blind.

Conventionally, the automatic blind control is generally performed as follows.
For example, in the case of a 20-story building, one illuminance sensor is arranged on the roof, and illuminance information measured by the illuminance sensor is transmitted to a control personal computer in the management room on the first floor. The control personal computer that has received the information on the illuminance of the illuminance sensor calculates the hoisting height of each blind and the slat angle with the stored control program, and the hoisting height on all the blinds on the 1st to 20th floors. Slat angle control information is transmitted. On the other hand, each blind on the 1st to 20th floors receives control information from the control program of the control personal computer, and sets the winding height and slat angle according to the control information.

Patent Document 1 describes a technique in which a solar radiation sensor is provided on the top floor, and blinds are group-controlled by a main controller unit D.
Patent Document 2 describes a technique in which a control device performs group control of electric blinds based on information from a plurality of sunlight sensors.

JP 2000-096956 A JP 2006009282 A

  By the way, in the conventional automatic blind control, the control of each blind is centrally managed, and it takes time to transmit control information to all the blinds after obtaining illuminance information by the illuminance sensor or sunlight sensor. There's a problem.

  For example, after obtaining illuminance information with an illuminance sensor or sunlight sensor, it takes about 1 minute to send the illuminance information to the control device, and it takes several seconds to calculate the control information with the control device. It takes 2-3 minutes to finish sending information.

  Also, if you try to send control information quickly, it will crash, so the data transmission speed will be intentionally reduced.After obtaining illuminance information with the illuminance sensor or sunlight sensor, control information will be sent to all blinds. Currently, it takes 10 to 15 minutes to complete transmission.

In addition, it is difficult for the control device to grasp the influence of each blind, such as the shadow of the building, the reflected light, and the window shining, with the illuminance information of the conventional illuminance sensor and sunlight sensor. Is not properly controlled.
In addition, since the conventional automatic blind control configuration is connected to the network, the initial cost is high and the network management is more sophisticated.

  In view of the above situation, an object of the present invention is to provide a low-cost blind control system in which each blind is appropriately controlled in accordance with the surrounding environment and has high control information responsiveness.

  In order to achieve the above object, a blind control system according to the first aspect of the present invention includes an automatic blind provided facing a window and capable of automatically changing the height and inclination of a slat that blocks outdoor light, A sensor for measuring external illuminance; and first control means for calculating and controlling the height and inclination of the slats of the automatic blind, wherein the first control means has a one-to-one correspondence with the automatic blind. The automatic blind is provided and is controlled by being uniquely calculated.

  According to the blind control system according to the first aspect of the present invention, since the automatic blind is controlled in a stand-alone manner, it is not necessary to connect a network. In addition, installation is easy because each window installed by the blind control system is independent. Therefore, cost reduction can be achieved.

A blind control system according to a second aspect of the present invention is the blind control system according to the first aspect of the present invention, wherein the sensor is configured such that when the window is viewed from the inside, the lower left corner, the upper left corner, the lower right corner, the upper right corner, and the 4 It is arranged at any one of the middle portions of the corners.
According to the blind control system of the second aspect of the present invention, the sensor is disposed at any one of the lower left corner, the upper left corner, the lower right corner, the upper right corner, and an intermediate portion of the four corners when the window is viewed from the indoor. Therefore, it is possible to control an automatic blind corresponding to various situations such as incident light on a part of a window, shade, reflection and the like.

  A blind control system according to a third aspect of the present invention is the blind control system according to the second aspect of the present invention, wherein the sensor is disposed at a lower left corner and an upper right corner, or at an upper left corner and a lower right corner when the window is viewed from the inside. Has been.

  According to the blind control system of the third aspect of the present invention, since the sensors are arranged at the lower left corner and the upper right corner or the upper left corner and the lower right corner when the window is viewed from the inside, the sensors are diagonally arranged in the window. Are arranged to obtain various light conditions in the window.

  According to a fourth aspect of the present invention, there is provided a blind control system that faces a window and measures a plurality of automatic blinds that can automatically change the height and inclination of slats that block outdoor light, and the illuminance outside the window. A plurality of sensors, and second control means provided for each of the plurality of automatic blinds, each of which calculates and controls the height and inclination of the slats of the automatic blind, respectively, Are divided into several groups, and the automatic blinds belonging to the same group are controlled to have the same height and inclination of the slats by calculation of the corresponding second control means.

According to the blind control system of the fourth aspect of the present invention, a plurality of automatic blinds are divided into several groups, and the automatic blinds belonging to the same loop are controlled to have the same slat height and inclination. The automatic blind can be controlled for each group having a common property according to the environment and the user's request.
Further, it is possible to prevent the user from feeling uncomfortable due to the operation of the automatic blind.

  A blind control system according to a fifth aspect of the present invention is the blind control system according to the fourth aspect of the present invention, wherein the automatic blind is a blind arranged between pillars on the same floor of the building or the same floor of the building. Is a blind placed in

  According to the blind control system according to the fifth aspect of the present invention, for each blind disposed between the pillars on the same floor of the building, or for each blind disposed on the same floor of the building, Automatic blind group control is possible.

  A blind control system according to a sixth aspect of the present invention is the blind control system according to any one of the first to fifth aspects, wherein the control for the reflected light from other buildings of the automatic blind is measured by the sensor. The threshold value of the predetermined change amount of the illuminance indicating how much the measured value of the illuminance has changed with respect to the previous measurement value of the illuminance is performed.

  According to the blind control system relating to the sixth aspect of the present invention, the amount of the measured illuminance measured by the sensor relative to the previous measured illuminance is controlled by the control for the reflected light from other buildings of the automatic blind. Since it is performed using the threshold value of the predetermined change amount of the illuminance indicating whether it has changed, it is possible to control the reflected light more accurately.

  According to the present invention, it is possible to realize a low-cost blind control system in which each blind is appropriately controlled in accordance with the surrounding environment and has high control information responsiveness.

1 is a perspective view showing an external appearance of a blind control system according to a first embodiment of the present invention. The perspective view which shows the internal structure of the upper part of an automatic blind, and a blind box. The control block diagram of a blind control system. The schematic diagram which shows the case where PC is connected to the stand-alone type blind control system. (a) is a figure which shows the case where a ridge is on a window and is a horizontal blind, (b) is a figure which shows the element which can be detected by the position of the optical sensor in the case of (a). (a) is a figure which shows the case where there is a ridge on the window and the side window is a side blind, and (b) is a figure which shows the element which can be detected by the position of the optical sensor in the case of (a). (a) is a figure which shows the case where a side fin is in a window and is a horizontal blind, (b) is a figure which shows the element which can be detected by the position of the optical sensor in the case of (a). (a) is a vertical blind outside the window, and shows a case where there are no ridges and side fins, and (b) shows an element that can be detected by the position of the optical sensor in the case of (a). (a) is a figure which shows a case where a window and a side fin do not have a horizontal blind, (b) is a figure which shows the element which can be detected by the position of the optical sensor in the case of (a). Flow chart of control of automatic blinds. The detailed control flowchart of solar altitude judgment processing. (a)-(c) is the schematic diagram seen from the side which shows what kind of angle a slat angle is. The detailed control flow figure of a sun azimuth | direction determination process. The schematic diagram which shows the state in which reflection control is performed. The detailed control flowchart of an outdoor illumination intensity judgment process. The schematic diagram which shows the state in which a shade process is performed. The detailed control flowchart of a schedule judgment process. The figure showing the accumulated control failure time when reflected light judgment is performed from sunrise to sunset with the illuminance setting value (illuminance threshold). The figure showing the accumulated control failure time at the time of performing reflected light judgment from sunrise to sunset with the change rate of an illuminance value. The figure showing the accumulated control failure time at the time of performing reflected light judgment from sunrise to sunset by the variation | change_quantity of an illuminance value. The schematic diagram which shows the blind control system of Embodiment 2 which concerns on this invention. The schematic diagram which shows the state which connected PC to TCU of the blind control system of Embodiment 2 via a network.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
<< Embodiment 1 >>
FIG. 1 is a perspective view showing an appearance of a blind control system according to a first embodiment of the present invention.
The blind control system S1 according to the first embodiment of the present invention is a stand-alone type.

  The blind control system S1 includes an automatic blind 1 that is arranged along the window surface and controls light entering the room from the outside, light sensors s1 and s2 that measure the brightness outside the window, and illuminance data of the light sensors s1 and s2. And a TCU (Terminal Control Unit) 2 of a controller that controls the automatic blind 1.

The optical sensors s1 and s2 are arranged between the window to which the automatic blind 1 is attached and the automatic blind 1, and detect the brightness (illuminance) outside the window.
The blind control system S1 is a system in which the TCU 2 provided in a one-to-one correspondence with the automatic blind 1 controls the automatic blind 1 directly and uniquely.

<Automatic blind 1>
The automatic blind 1 includes a slat 1a that shields light and takes in light, an elevating cord 1b to which the slat 1a is fixed and used for winding and unwinding the slat 1a, and a blind box 1c in which the slat 1a is stored when the slat 1a is rolled up. And have.

The lifting / lowering cord 1b is fixed to a bottom rail 1r disposed below the lowermost slat 1a.
The slat 1a is controlled to be wound up and down (blind height) and tilt angle (slat angle) (see FIG. 12) by the control of the TCU 2.

<Mechanism for winding and unwinding slat 1a (blind height) and angle of slat 1a>
FIG. 2 is a perspective view showing the upper part of the automatic blind 1 and the internal structure of the blind box 1c.
Inside the blind box 1c are housed an elevating motor 1d1 which is a DC motor responsible for winding and unwinding the slat 1a, and a slat angle control motor 1e1 for adjusting the angle of the slat 1a.

A cord winding 1d3 is fixed to the drive shaft 1d2 of the lifting motor 1d1, and the lifting cord 1b is wound around the cord winding 1d3.
With this configuration, the lifting / lowering motor 1d1 is driven to rotate the cord winding 1d3, and the bottom rail 1r is lifted / lowered via the lifting / lowering cord 1b to wind and unwind the slat 1a. Height) can be adjusted.

  A stepping motor may be used as the elevating motor 1d1, but a DC motor having a high output torque is used because the elevating height does not require high-precision control and the bottom rail 1r is heavy. Is preferred.

  The slat angle control motor 1e1 uses a stepping motor. The slat angle control motor 1e1 is integrally provided with a gear box (deceleration mechanism) 1e2 for reducing the rotational speed and improving the torque. A tilt drum 1e4 is attached to a rotating shaft 1e3 to which a driving force is transmitted from the output shaft of the gear box 1e2.

  Two ladder cords 1f1 and 1f2 are attached to the tilt drum 1e4. The two ladder cords 1f1 and 1f2 are respectively wound around the tilt drum 1e4 by about a half circumference, and are suspended one by one on both sides (window side and indoor side) of the slat 1a in the short direction.

  The two ladder cords 1f1 and 1f2 are provided with a weft thread 1g for each slat 1a, and the slat 1a is suspended on the ladder cords 1f1 and 1f2 by riding on the weft thread 1g. When the tilt drum 1e4 is rotated, the heights of the two ladder cords 1f1 and 1f2 are different, and the weft thread 1g is inclined from the horizontal direction, so that the slat 1a is inclined. In this way, the angle (slat angle) of the slat 1a is adjusted by controlling the rotation angle of the slat angle control motor 1e1.

<TCU2>
The TCU 2 shown in FIG. 1 is a TCU intended to completely and independently control the automatic blind 1 installed in one window unit.
The TCU 2 manages all inputs and outputs of the main body of the automatic blind 1 and the optical sensors s1 and s2, and is loaded with various arithmetic processing programs (control programs).
The control program includes an illuminance calculation program, a slat angle calculation program, a solar radiation presence / absence determination program, and the like.

  The TCU 2 is directly connected to the optical sensors s1 and s2 for judging whether the outdoor is “clear / other”, and sets the minimum necessary control parameters, so that the outdoor brightness, the sun position and the light to the window are set. The slat angle and the height of the blind are controlled by calculating the incident angle.

  As control parameters, building latitude, building longitude, window azimuth angle where automatic blind 1 is installed, allowable distance of solar radiation at the solar altitude of the moon, date, and time, floor to automatic blind 1 Window top height, blind lift (none: flag “0”, yes: flag “1”), parameters to be raised and lowered when the set time is exceeded, allowable illuminance, number of times the automatic blind 1 is raised or lowered, Slat angle correction value, slat angle horizontal threshold value, determination value for starting slat angle control, determination value for temporarily stopping slat angle control, winding up when it is judged that it is cloudy after a certain period of time has passed since the release of shielding There are an execution threshold, a lowering execution threshold that is lowered when it is determined that the outside state has become brighter from the cloudy state.

Note that necessary control parameters are appropriately set.
The TCU 2 is provided with an input switch (not shown) that is operated by the user, so that the automatic blind 1 can be manually / automatically switched and various control parameters can be set.

FIG. 3 is a control block diagram of the blind control system.
The TCU 2 receives illuminance data from the optical sensors s1 and s2. Then, using the illuminance data and the control parameters described later, the control program calculates the height of the slat 1a of the automatic blind 1 (the height of the blind) and the angle of the slat 1a (the slat angle). And operation result data is output. Then, based on the calculation result data, a control signal that is command value data to the elevating motor 1d1 and the slat angle control motor 1e1 is output to the elevating motor 1d1 and the slat angle control motor 1e1. .

The TCU 2 includes a microcomputer and peripheral circuits such as a D / A / A / D converter, a sensor signal amplifier circuit, and a motor control circuit.
A control program is stored in the ROM of the microcomputer, and control of the automatic blind 1 (control of blind height and slat angle) is performed by the CPU loading and executing the control program in the RAM.

  The TCU 2 has two connection channels because the optical sensors s 1 and s 2 are connected. Note that when one photosensor is used, the number of connection channels is one, and when three or more photosensors are used, the number of connection channels corresponds to the number of photosensors.

<Optical sensors s1, s2>
Photosensors and the like are used for the optical sensors s1 and s2, but are not particularly limited as long as the illuminance can be measured.
For example, as the optical sensors s1 and s2, a sensor module created using a photometric IC with a built-in photodiode is applied. In this case, the optical sensors s1 and s2 are designed to abandon the wide measurement range (range), specialize in clear sky / cloudy weather judgment (judgment of brighter or darker than a certain illuminance, on-off judgment), and limited illuminance range. A configuration that suppresses the cost of the sensor is desirable.

<PC connection>
A network interface is provided in the TCU 2, and the TCU 2 can be connected to an external PC (personal computer) or the like.
FIG. 4 is a schematic diagram showing a case where a PC is connected to the TCU 2 of the stand-alone blind control system.

  Thereby, information, such as the slat angle of the blind 1 in the stand-alone blind control system S1, the winding height (blind height), the blind error, the illuminance value, and the automatic / manual state switching, can be acquired using the PC. Moreover, various control parameters can be set using a PC, and the control of the automatic blind 1 can be switched between manual and automatic.

  The blind error is that the TCU 2 does not receive a signal that the lifting / lowering cord 1b is disconnected by a limit switch (not shown) provided in the automatic blind 1, or the TCU 2 does not receive a signal that the slat 1a and the bottom rail 1r are lowered. Alternatively, the determination is made based on the fact that a signal indicating that the slat 1a and the bottom rail 1r are not received is received.

<Arrangement of optical sensors s1 and s2 with respect to window w1 to which automatic blind 1 is attached>
Next, the arrangement of the optical sensors s1 and s2 for determining the lighting state of the window w1 to which the automatic blind 1 is attached will be described.
Generally, it is desirable to provide two optical sensors s1 and s2 on the diagonal line between the upper left corner and the lower right corner or the lower left corner and the upper right corner when the window w1 is viewed from the inside.

Furthermore, the result of having examined arrangement | positioning of preferable optical sensor s1 and s2 is demonstrated below.
As examination contents, basically using two optical sensors s1 and s2, the window w1 to which the automatic blind 1 is attached is viewed from the indoor side, and the optical sensor is located at any of the upper right, lower right, upper left, and lower left positions of the window. With regard to whether or not s1, s2 can be used to detect shadows from the window w1 and the shadows of the side fins sf1, reflected light of the sun, shadows of buildings, etc., as shown in FIGS. 5 (a) to 9 (a). Five cases were clarified.

  FIGS. 5 to 9 show shadows caused by the h1 of the window w1 and the side fins sf1 when the optical sensors s1 and s2 are arranged at any of the upper right, lower right, upper left and lower left of the window where the automatic blind 1 is arranged. It is the figure which clarified whether the reflected light of a sun, the shadow of a building, etc. can be detected.

  5 (b) to 9 (b), for each of the five cases of FIGS. 5 (a) to 9 (a), when the shadows by the h1 or the side fins sf1 can be detected by the optical sensors s1 and s2. Is marked with “S (shadow)”, “R (reflection)” if the reflected sun light can be detected, and “B (shadow by Building)” if the shadow of the building can be detected. Yes. The blanks in the tables of FIGS. 5B to 9B are blank because the detection performance is inferior.

  In each table of FIG. 5B to FIG. 9B, “north”, “east”, “south”, and “west” in the leftmost column (first column) are windows of the window where the automatic blind 1 is arranged. The second row to the fifth row indicate the position of the window w1 viewed from the room where the optical sensors s1 and s2 are arranged. The rightmost column (the sixth column) indicates how many optical sensors s1 and s2 are required. Indicates. The “x” mark in the rightmost column (sixth column) indicates that only one optical sensor s1, s2 is required, and the “Δ” mark indicates that one optical sensor s1, s2 may be one, but two are more preferable. The symbol “◯” indicates that two optical sensors s1 and s2 are necessary.

<In the case of FIG. 5 (a) in the first case where there is 庇 h1 in the window w1 and a horizontal blind>
FIG. 5 of the first case is a case where the window w1 has a hail h1 and the horizontal blind shown in FIG. The hail h1 is a general one having a protruding length of about 30 cm to 50 cm.
When the automatic blind 1 shown in FIG. 5 (a) is attached to the window w1 to which the automatic blind 1 is attached, and in the case of the horizontal blind, from FIG. 5 (b), when the window w1 is in the “north” direction, It can be seen that the reflected light of the sun can be detected by placing one on either the lower right or lower left of the window w1.

  Further, from FIG. 5B, when the window w1 is directed to “east”, “south”, and “west”, the optical sensors s1 and s2 are set to “lower right” and “lower left” when the window w1 is viewed from the inside. One, preferably two, it can be seen that the shadow (S) by the hail h1, the reflected light of the sun (R), and the shadow of the building (B) can be detected.

<In the case of a horizontal blind with a pot window having a ridge h1 and a side fin sf1 in the window w1 of FIG. 6 (a) of the second case>
FIG. 6 of the second case is the case of the horizontal blind shown in FIG. 1, which is a pot window having a ridge h 1 and a side fin sf 1 in the window w 1. In FIG. 6 of the second case, two optical sensors s1 and s2 are both required (◯).

  In the case where there is a ridge h1 on the window w1 to which the automatic blind 1 shown in FIG. 6 (a) is attached and a side window sf1 is a horizontal blind, from FIG. 6 (b), the window w1 is in the “north” direction. When the optical sensors s1 and s2 are arranged at the lower right and lower left of the window w1, it can be seen that the shadow (S) and the reflected light (R) from the sun h1, the side fins sf1 can be detected.

  From FIG. 6B, when the window w2 is directed to “east”, “south”, and “west”, if the optical sensors s1 and s2 are arranged at the lower right and lower left of the window w1, the shadows by the hail h1 and the side fins sf1 It can be seen that (S), reflected light of the sun (R), and shadow of the building (B) can be detected.

<In the case of the side blind sf1 in the window w1 in FIG. 7 (a) of the third case and a horizontal blind>
FIG. 7 of the third case is a case where the side fin sf1 is provided in the window w1 and the horizontal blind shown in FIG. In FIG. 7 of the third case, two optical sensors s1 and s2 are both required (◯).

  In the case where the window w1 to which the automatic blind 1 shown in FIG. 7 (a) is attached has the side fin sf1 and is a horizontal blind, from FIG. 7 (b), when the window w1 is in the “north” direction, the optical sensors s1 and s2 are connected to the window w1. The reflected light (R) of the sun can be detected by arranging it at the upper right and upper left of the. Further, it can be seen that the shadow (S) and the reflected light (R) of the sun by the side fins sf1 can be detected if they are arranged at the lower right and lower left of the window w1.

  From FIG. 7B, when the window w1 is facing “east”, the shadow (B) of the building can be detected by arranging the optical sensors s1 and s2 at the upper right and upper left of the window w1, and the right of the window w1. It can be seen that the shadow (S) and the reflected light (R) of the sun by the side fins sf1 can be detected if they are arranged at the bottom and bottom left.

  When the window w1 is facing “south”, the light sensors s1 and s2 are arranged on the upper right and upper left of the window w1 to detect the reflected light of the sun (R) and the shadow of the building (B). If it arrange | positions at the lower right and lower left of w1, it turns out that the shadow (S) by the side fin sf1 and the reflected light (R) of the sun can be detected.

  When the window w1 is facing “west”, the shadows (B) of the building can be detected by arranging the optical sensors s1 and s2 on the upper right and upper left of the window w1, and on the lower right and lower left of the window w1. If it arrange | positions, it turns out that the shadow (S) by the side fin sf1 and the reflected light (R) of the sun can be detected.

<The fourth case is a vertical blind outside the window of FIG. 8A, and there is no hail h1 and side fin sf1>
FIG. 8 of the fourth case is not a horizontal blind shown in FIG. 1 in the window w1, but a vertical blind in which the slats 1a arranged outside the window w1 are arranged in the vertical direction, and the heel h1 and the side fin sf1 are This is the case.

In FIG. 8 of the fourth case, two optical sensors s1 and s2 are both required (◯).
FIG. 8A is a vertical blind outside the window, and when there is no 庇 h1 and side fin sf1, the window w1 is “north”, “east”, “south”, “west” from FIG. The reflected light (R) of the sun can be detected by disposing the optical sensors s1 and s2 at the upper right and upper left of the window w1. In addition, it can be seen that if it is arranged at the lower right and lower left of the window w1, the reflected light of the sun (R) and the shadow of the building (B) can be detected.

<Fifth case in FIG. 9 (a), where the window w1 has no hail h1, side fins sf1, and is a horizontal blind>
FIG. 9 of the fifth case is a case of the horizontal blind shown in FIG. 1 without the hail h1 and the side fins sf1 in the window w1. In the fifth case shown in FIG. 9 (a), one optical sensor s1 and s2 is required in both cases, but two are desirable (Δ).
Further, from FIG. 9B, when the window w1 is facing “north”, the light sensors s1 and s2 are arranged at the upper right, lower right, upper left, and lower left of the window w1, so that the reflected light (R) of the sun can be obtained. It can be detected.

In addition, when the window w1 is directed to “east”, “south”, “west”, the light sensors s1, s2 are arranged on the upper right and upper left of the window w1, so that the reflected light of the sun (R) and the shadow of the building ( B) can be detected.
In addition, when the window w1 is facing “east”, “south”, and “west”, the reflected light (R) of the sun can be detected by arranging the optical sensors s1 and s2 at the lower right and lower left of the window w1.

It is preferable to select the position and number of the optical sensors s1 and s2 from the state of the window w1 and the automatic blind 1 according to the first to fifth cases. Note that this is an example of the position and number of desirable optical sensors s1, s2, and other arrangements and numbers of optical sensors may be selected. For example, when the window w1 is viewed from the room, the upper left corner of the four corners, the lower left corner, the upper right corner, the lower right corner, and at least one of the middle portions of these four corners, that is, the central portion, are arranged.
By arranging the sensor in at least one of the upper left corner, the lower left corner, the upper right corner, and the lower right corner of the four corners, the illumination of a wide range of the window w1, for example, incident light on a part of the window, shade, reflection, etc. It can be detected. In addition, by arranging sensors in the middle part of the four corners of the window w1, the illuminance at the middle part of the four corners of the window w1 and the illuminance representing the window w1 can be detected.

<Control of automatic blind 1>
As described above, the automatic blind 1 is controlled by executing the control program in the TCU 2.
The basic functions of the control program are the slat (1a) angle calculation program and the solar radiation presence / absence determination program.

  From the processing result of the control program, two commands “slat (1a) angle command value” and “blind height (slat 1a height) command value” are transmitted to the automatic blind 1 (the control flow is shown in the figure). 10 to 17).

Further, the TCU 2 receives limit signals such as “abnormal slat (1a) angle” and “abnormal blind height (slat 1a height)” from the main body of the automatic blind 1.
The above-described series of processing is performed by the TCU 2 alone.

  When logging log data (history data), as shown in FIG. 4, a network interface capable of connecting a PC (personal computer) to the TCU 2 is installed. As a result, “slat (1a) angle”, “blind height (slat 1a height)”, “blind error”, “illuminance value” acquired by the optical sensors s1 and s2, and “automatic / manual state of the automatic blind 1” Is switched to the PC via the network interface.

<How to use illuminance values measured by optical sensors s1 and s2>
When the illuminance value measured by the optical sensors s1 and s2 is used for control, the degree of freedom is given as follows.

1. First, only the illuminance value 1 measured by the optical sensor s1 is used.
2. Second, only the illuminance value 2 measured by the optical sensor s2 is used.
3. Third, the average value of the illuminance value 1 measured by the optical sensor s1 and the illuminance value 2 measured by the optical sensor s2 is used.
4). Fourth, the higher one of the illuminance value 1 measured by the optical sensor s1 and the illuminance value 2 measured by the optical sensor s2.
5. Fifth, the lower of the illuminance value 1 measured by the optical sensor s1 and the illuminance value 2 measured by the optical sensor s2 is used.

  For example, since the day is inserted from the east for 2 hours from sunrise, only the illuminance value 1 measured by the first optical sensor s1 facing the east is used. Thereafter, the average value of the illuminance value 1 measured by the first optical sensor s1 and the illuminance value 2 measured by the second optical sensor s2 is used. Then, for 2 hours of sunset when the sun sets in the west, only the illuminance value 2 measured by the second optical sensor s2 facing west is used. In addition, when using the average value of the 1st illumination value 1 and the 2nd illumination value 2, it is normal time.

  Further, for example, when the shade is higher than a predetermined illuminance in the shade processing when the window w1 is shaded or when the sunlight is not directly inserted into the window w1, but the reflection processing when the sunlight is reflected from a nearby building Uses a higher illuminance value 1 measured by the first optical sensor s1 and an illuminance value 2 measured by the second optical sensor s2.

  On the other hand, when the illuminance is lower than the predetermined illuminance, it is highly possible that the light entering the window is weak and the room is dark, so the illuminance value 1 measured by the first optical sensor s1 and the second optical sensor s2 are measured. Use the one with the lower illuminance value 2, and so on.

  The illuminance used in the following control is the illuminance value acquired by the applied optical sensor when one or three or more optical sensors are applied. Even when the illuminance is measured by three or more optical sensors, the first to fifth methods described above can be applied as appropriate.

<Control of automatic blind 1>
FIG. 10 is a flowchart of control of the automatic blind 1.
First, the time is measured with a timer using a crystal oscillator or the like, and when the time of the control cycle is reached, the following control is performed (S100 in FIG. 10).

  With respect to the control cycle, the determination (calculation) cycle has a degree of freedom. Specifically, it can be set every second within an arbitrary time, and can be individually set for the TCU 2 by the input switch or the connected PC. In other words, In this configuration, the control cycle can be changed for each TCU2 of the controller.

  Subsequently, a sun position calculation process (S200 in FIG. 10) is performed. In the solar position calculation process, the current date and time window (automatic blind 1) is calculated from the data of the scientific chronology using the current date and time, the latitude, longitude, and position (direction, height, etc.) of the window (automatic blind 1). ) To calculate the azimuth and elevation angle of the sun.

Subsequently, a slat angle calculation process (S300 in FIG. 10) is performed. In the slat angle calculation process, a slat angle for each direction of the window (automatic blind 1) is calculated from the calculated sun position. Then, from the slat angle, the sun position, and the illuminance, the slat angle is adjusted to an optimum value in consideration of the illuminance in the room and the view.
Subsequently, solar altitude determination processing (S400 in FIG. 10) is performed.

FIG. 11 is a detailed control flow of the solar altitude determination process.
In S401 of FIG. 11, it is determined whether the illuminance exceeds a preset dusk threshold of the illuminance range indicating dusk, which is within the dusk threshold, or less than the dusk threshold.

  If it is determined in S401 that the illuminance exceeds the dusk threshold, it is before dusk, so the above-described slat angle control during normal time is performed (S402 in FIG. 11), and the automatic blind 1 is closed (the slat 1a is down). And is operated (controlled) to the slat angle by the normal slat angle control (S403 in FIG. 11).

  If the illuminance is determined to be within the twilight threshold value in S401, the control signal is calculated by calculating that the slat angle is horizontal and the automatic blind 1 is closed (the slat 1a is lowered to the bottom) from the view priority control at dusk. The automatic blind 1 is closed and the slat angle operates horizontally (S405 in FIG. 11).

  If it is determined in S401 that the illuminance is less than the dusk threshold, it is determined that it is nighttime, the automatic blind 1 is controlled to be fully closed, and the automatic blind 1 is closed (the slat 1a is lowered). The angle of the slat 1a is -90 degrees, and a control signal is transmitted to the automatic blind 1 (S406 in FIG. 11). As a result, the automatic blind 1 is closed (the slat 1a is lowered to the bottom), and the angle of the slat 1a operates to an angle of -90 degrees (see FIG. 12 (c) below showing the angle of the slat 1a). (S407 in FIG. 11). The above is the control of the solar altitude determination process in S400 of FIG.

  FIG. 12 is a schematic view seen from the side showing what the slat angle is. FIG. 12 (a) shows, for example, that the slat 1a is horizontal and the slat 1a is viewed horizontally in the cloudy daytime. In order to ensure, the angle of the slat 1a indicates “0 degree”. FIG. 12B shows, for example, a case where the angle of the slat 1a is “plus (+) 0 to 90 degrees” in order to block the solar radiation during strong daylight. FIG. 12C shows a case where the angle of the slat 1a is “minus (−) 90 degrees” in order to shield the indoor light from leaking outside at night, for example.

Subsequently, the solar orientation determination process in S500 of FIG. 10 is performed.
FIG. 13 is a detailed control flow of the solar orientation determination process.
In the solar orientation determination process, first, whether the solar orientation is within the predetermined window orientation threshold using the default window orientation threshold that determines whether the solar orientation is in a position to insert light into the window surface, Alternatively, it is determined whether it is outside the window surface orientation threshold (S501 in FIG. 13).

When the direction of the sun is within the predetermined window surface direction threshold (Yes in S501 in FIG. 13), the above-described control of the slat angle is performed (S502 in FIG. 13).
On the other hand, when the direction of the sun is outside the predetermined window surface direction threshold (No in S501 in FIG. 13), reflection control (see FIG. 14) is performed.

FIG. 14 is a schematic diagram illustrating a state in which reflection control is performed.
As shown in FIG. 14, the reflection control is performed when the sun is not directly inserted into the automatic blind 1 provided in the window w1 and the reflected sunlight is received from the nearby building B1.

First, in S503 of FIG. 13, it is determined whether or not the window surface illuminance change amount is within a predetermined change amount threshold value. The amount of change indicates the amount of change in the illuminance value with respect to the reference illuminance value.
When the change amount of the window surface illuminance is within the predetermined change amount threshold value (Yes in S503 in FIG. 13), the slat angle is horizontal and the angle is “0 degree” (see FIG. 12A), and the blind height “ It is controlled to be “closed” (the slat 1a is lowered to the bottom) (S504 in FIG. 13).

  On the other hand, when the change amount of the window surface illuminance is outside the predetermined change amount threshold value (No in S503 in FIG. 13), the slat angle is “45 degrees” (see FIG. 12A), and the blind height is high. It is controlled to be “closed” (the slat 1a is lowered to the bottom) (S505 in FIG. 13). The above is the solar orientation determination process in S500 of FIG.

Subsequently, the outdoor illuminance determination process of S600 of FIG. 10 is performed.
FIG. 15 is a detailed control flow of outdoor illuminance determination processing.
The outdoor illuminance determination process in S600 of FIG. 10 is performed as follows.
It is determined whether or not the outdoor illuminance measured by the optical sensors s1 and s2 is equal to or greater than a predetermined threshold (S601 in FIG. 15).

When the outdoor illuminance is equal to or greater than the predetermined threshold (Yes in S601 in FIG. 15), the above slat angle control is performed (S602 in FIG. 15).
On the other hand, when the outdoor illuminance is less than the predetermined threshold value (No in S601 in FIG. 15), shade processing (see FIG. 16) is performed.

FIG. 16 is a schematic diagram illustrating a state where shade processing is performed.
As shown in FIG. 16, the shade process is performed when the automatic blind 1 provided in the window w1 is affected by the shadow of sunlight from the nearby building B2.
In S603 of FIG. 15, it is determined whether or not the elapsed time is within the preset set time, shorter than the preset set time, or exceeds the preset set time.

  When it is determined in S603 in FIG. 15 that the elapsed time is within the predetermined set time, normal slat angle control is performed (S604 in FIG. 15), and the angle of the slat 1a is set as the angle of the command value of the slat angle control. The automatic blind 1 operates when the blind height is "closed" (the slat 1a is lowered to the bottom) (S605 in FIG. 15).

  If it is determined in S603 in FIG. 15 that the elapsed time is within the predetermined set time, the slat 1a is controlled horizontally (S606 in FIG. 15), and the angle of the slat 1a is “horizontal” (see FIG. 12A). The automatic blind 1 operates when the blind height is “closed” (the slat 1a is lowered to the bottom) (S607 in FIG. 15).

  When it is determined in S603 in FIG. 15 that the elapsed time is within the predetermined set time, control is performed so that the slat 1a is rolled up (S608 in FIG. 15), and the angle of the slat 1a is rolled up at "horizontal". Then, the blind height is “open” (S609 in FIG. 15). The above is the outdoor illuminance determination processing in S600 of FIG.

Subsequently, the schedule determination process in S700 of FIG. 10 is performed.
FIG. 17 is a detailed control flow of schedule determination processing.
In S701 of FIG. 17, it is determined whether or not the time has reached the time A of the designated date and time determined by the predetermined one day.

  When the time is the time A of the designated date and time determined by the predetermined day (Yes in S701 in FIG. 17), the default value to be set is initialized (S702 in FIG. 17). Thereafter, the process proceeds to S703.

  If the time is not the time A of the designated date / time determined by the predetermined day (No in S701 of FIG. 17), whether or not the time is the time B of the predetermined date / time in S703 of FIG. Determined.

  When the time has reached the predetermined time B (Yes in S703 in FIG. 17), the automatic blind 1 is designated in advance. For example, the automatic blind 1 at 6:00 pm is fully closed (see FIG. 12C). In addition, the determined designation | designated operation is what a user desires, for example.

If the time is not the predetermined time B (No in S703 of FIG. 17), the process returns.
The above is the control of the stand-alone automatic blind 1 shown in FIG.

<Reason for determining whether to perform reflection control in S503 of FIG. 13 based on the amount of change in illuminance>
Next, the reason for determining whether to perform reflection control based on the amount of change in illuminance in S503 in FIG. 13 will be described.

FIG. 18 is a diagram illustrating the accumulated control failure time when the reflected light determination is performed from the sunrise to the sunset with the illuminance setting value (illuminance threshold).
The tracking sensor was measured in the case of a commercially available sensor that tracks the sun, in the case of the following Box type 1 m sensor, and in the case of the following Box type aspect ratio sensor.

  The box type 1m sensor models only the aspect ratio of the blinds (the width of the slats 1a and the distance between the slats 1a when the automatic blind 1 is viewed from the side), and the allowable solar incident distance up to 1m is allowed. The sensor is manufactured so that the illuminance can be accurately measured with light of 1 m or more, and a photodiode is used.

  A box-type aspect ratio sensor is a sensor in which the effect of “庇” is added to the conditions of a Box-type 1 m sensor, and even if there is “庇”, the allowable incident distance to solar radiation is 1 m. In addition, the sensor is manufactured so that light of 1 m or more can be measured accurately.

  In FIG. 18, since the generation time of reflected light is short, the control time interval is set to 1 minute. The control by the tracking sensor is adopted in general central batch control. However, since the time without direct irradiation is outside the control time, the slat 1a becomes horizontal and all the reflected light enters the room.

  On the other hand, in the threshold judgment using the dedicated illuminance sensor, the reflected light is shielded to some extent, but there is a lot of time of “shielding the window w1 without reflected light” that is in the shielding state in the time zone where it is desired to open more than that. End up.

The reason for this is that although reflected light can be detected properly on sunny days, the diffuse illuminance increases on days with lots of clouds, and the illuminance detected by the dedicated illuminance sensor increases even during periods when there is no reflected light. It is done.
Therefore, in order to improve this situation, an attempt was made to determine the rate of change in illuminance per minute of the illuminometer detection value.

FIG. 19 is a diagram illustrating the accumulated control failure time when the reflected light determination is performed from sunrise to sunset at the change rate of the illuminance value.
The sensor was the same as that shown in FIG.

  The rate of change indicates how many times the illuminance one minute before the measurement interval is compared with the current illuminance, and 1.5 times indicates that the illuminance is 1.5 times in one minute.

Although the control accuracy is improved as compared with the determination based on the simple illuminance threshold value in FIG. 18, in order to shield the reflected light, the time for “shielding the window w1 without the reflected light” increases. The reason for this is considered to be that the rate of change greatly increases and decreases regardless of the presence or absence of reflected light on days with large weather fluctuations.
Therefore, an attempt was made to determine shielding based on the amount of change in illuminance per minute.

FIG. 20 is a diagram illustrating the accumulated control failure time when the reflected light determination is performed from sunrise to sunset with the amount of change in illuminance value.
The sensor was the same as that shown in FIG.
The amount of change is a measure of how much lx (lux) changes to the illuminance one minute ago.

From FIG. 20, when the amount of change as a criterion is set to about 800 lx for the “Box type 1m” and about 400 lx for the “Box type aspect ratio”, the time for “shielding the window w1 without reflected light” is not increased. It has been found that the reflected light of about 1/3 and 1/2 can be shielded. It should be noted that the fact that about 1/3 and 1/2 of the reflected light can be shielded is compared with the tracking sensor.
From the above results, it can be considered that the control based on the amount of change is most suitable for the determination of reflected light.

In addition, it is desirable to determine which method of simple threshold value, change rate, and change amount is most suitable for the building during trial operation adjustment after installation of the automatic blind 1.
However, what can be said in common is that if the setting range is small or the judgment time is short, the automatic blind 1 is frequently operated as a result.

  Therefore, in addition to the simple threshold value, the change rate, and the change amount, the setting range and the determination time may be considered as important control parameters.

  In view of the above, it is better to take measures such as automatically changing the mode with a control program, such as changing the judgment criteria according to the season, time of day, and building conditions. Or it is good also as setting with an input switch at the time of installation of the automatic blind 1. FIG.

According to the structure of the said Embodiment 1, there exists the following effect.
1. Since the system configuration is not based on network transmission, no physical data transfer time loss occurs. Therefore, the automatic blind 1 can be quickly controlled.
2. From the above, it is possible to introduce only one set because an upper MMI / F (Man Machine InterFace) is not required.

3. A PC capable of high-speed processing is not required.
4). Since no data is transferred, a high-speed network is not required.
5. Since fine control is performed, it is possible to control the slat 1a without time delay while ensuring the maximum view from the window w1.

6). Since it is possible to respond immediately from cloudy weather to sunny weather and from sunny weather to cloudy weather, it is possible to prevent deterioration of the visual environment.
7). Similarly, since the automatic blind 1 is controlled appropriately corresponding to the external environment, it functions effectively even in a thermal environment.

8). In contrast to the daylighting lighting control system, the blind control system S1 can minimize the power consumption of artificial lighting.
9. Automatic control over building shadows is possible without implementing sophisticated programs.
10. In general, it is possible to easily cope with reflected light that cannot be blindly controlled.

11. The illuminance sensor is not particularly limited.
12 The collection of the operation data can also be performed by implementing a network interface as shown in FIG.
13. This can also be done by installing a network interface on the hand switch unit for individual operation.

14 Installation is possible in the same manner as conventional blind control system installation methods.
15. Despite implementing advanced grade functions, it can be easily and inexpensively introduced.
16. Applicable to various two-motor type automatic blinds.
17. By taking in illuminance data of room lighting and setting the illuminance in the room in association with the illuminance values of the optical sensors s1, s2, linkage control with lighting equipment is also possible.

18. Linkage control with air conditioning equipment is also possible using information on air conditioning equipment. For example, air conditioning is used with the automatic blind 1 fully closed.
19. Linking with the security system, panic opening (when an event such as a panic occurs, linkage such as “full open” of the automatic blind 1 is also possible.

20. The fact that a large force can be obtained when exciting a pulse motor (stepping motor) and a force can be obtained even when de-energizing is applied to the control of the slat 1a, and the power consumption of the blind control system S1 is minimized. Can be.

<< Embodiment 2 >>
In the blind control system S2 of the second embodiment, for example, group control is performed for a column-to-column span from a certain floor of a building to an automatic blind 1 on one floor of the building.
Since the configuration other than this is the same as the configuration of the first embodiment, the same components are denoted by the same reference numerals, and detailed description thereof is omitted.

FIG. 21 is a schematic diagram showing a blind control system S2 according to the second embodiment of the present invention.
The blind control system S2 of the second embodiment is characterized in that the automatic blinds 11,..., 16 are grouped and the same control (grouping control) is performed for each group.

  The blind control system S2 includes one-span or one-floor automatic blinds 11,..., 16, and automatic blinds 11,. ............ Has 26.

The automatic blind 11 on one edge of the span or the floor and the automatic blind 16 on the other edge are provided with optical sensors s12 and s22, respectively. In addition, arrangement | positioning of optical sensor s12, s22 is an example, and it is possible to arrange | position two or more optical sensors in arbitrary positions.
For example, an optical sensor is arranged at one span or at the east end and the west end of one floor. Alternatively, optical sensors are arranged on one span or on the east end, south, and west end of one floor.
Alternatively, in addition to these, a photo sensor is arranged at a position where an influence such as shadow or reflection of a nearby building can be grasped.

The TCUs 21,..., 26 are connected to each other by a network n21.
The TCU 21,..., 26 stores a control program similar to that of the first embodiment for controlling the corresponding automatic blinds 11,. Each control program controls each of the automatic blinds 11... Control by the control programs TCU21,..., 26 is the same as that described in the first embodiment.

  Each of the TCUs 21,..., 26 is provided with an input switch (not shown) that is operated by the user so that the automatic blind 1 can be controlled manually / automatically and various control parameters can be set. .

The automatic blinds 11,..., 16 are divided into several groups, and the same control is performed for each group.
Therefore, the illuminance, control parameters, grouping information, and the like of the optical sensors s12 and s22 are transmitted via the network n21.

<Group control>
The group control in the blind control system S2 is as follows.
The blind control system S2 performs the same operation on any of the TCUs 21, ..., 26 of the plurality of controllers with the illuminance information of one optical sensor s12, and a plurality of units with the illuminance information of the other optical sensor s22. Any one of the TCU21,..., 26 of the controller is caused to perform the same operation.

  Alternatively, the operating status of the individual air conditioners installed in each room and the lighting information of the room can be used to determine whether it is in use or not in use, and automatically use the automatic blinds 11. In order to open or close, automatic blinds 11,..., 16 are grouped for each room, and control is performed for each group so as to be forced to a certain state by a specific event.

  Further, as an advanced form, when the presence sensor reacts with the security information in the last person leaving the room, the information on the presence sensor is transmitted to the TCU 21, ..., 26, and the automatic blind 11, ... ..., a group of 16 may be forced to panic open. Alternatively, the disaster prevention signal is linked to the disaster prevention signal, the disaster prevention signal is transmitted to the TCU 21, ..., 26, and a certain group is controlled in cooperation with the disaster prevention signal.

  Alternatively, the control of nearby building shadows and reflected light also corresponds to the grouping function of automatic blinds 11,..., 16, and the optical sensors installed in TCU 21,. When any one of s12 and s22 becomes lower than the set illuminance, all right sides of any one of the automatic blinds 11,.

In other words, it is determined that it is in the shade, and even if the illuminance value is higher on the right side than either of the optical sensors s12 and s22 of the corresponding sensor, the right side is all horizontal (see FIG. 12 (a)).
In this case, since the shade portion always moves, the grouping of the automatic blinds 11..., 16 also changes each time. The movement of the shaded part is programmed in advance in the control program.

  Of course, it is possible to group all the floors, and if it is a low-rise floor (the low-rise floor), the scenery outside the window will be boring, so it will be rather closed. On the other hand, the high-rise floor (high-rise floor) has a good appearance outside, so it is open.

  Specifically, the TCU 21,..., 26 has floor number information for several floors. When the floor number information is low, the automatic blinds 11,... When the number information is high, the automatic blinds 11,...

  When there is an examination room on the same floor in hospitals, etc., the same control as in other hospital rooms etc. is not performed, and grouping such as automatically closing any of the automatic blinds 11,. Do.

  The group control of the automatic blinds 11,..., 16 described above is based on the control in the first embodiment, and a control program is coded so that the above-described various group controls are performed with priority.

<PC connection>
FIG. 22 is a schematic diagram illustrating a state in which a PC is connected to the TCU of the blind control system according to the second embodiment via a network.
Using a PC, grouping information, control parameters, etc. are set in each of the automatic blinds 11,..., 16 TCU 21,. When 16 pieces of operation information are acquired, as shown in FIG. 22, a PC of MMI / F 19 is connected through a network n22. Further, information may be exchanged using the MMI / F 19 as the tablet terminal 19t.

  Thereby, using the PC of MMI / F19 or the tablet terminal 19t, the slat angle, the winding height (blind height), the blind error, the illuminance value, the automatic / manual state of each blind 11-16 in the blind control system S2 Such information can be acquired, various control parameters can be set, and manual / automatic switching can be performed.

According to the structure of the said Embodiment 2, there exist the following effects.
1. Since the automatic blinds 11,..., 16 are grouped for each area and controlled, the control can be performed in a unified manner, and the user can be prevented from feeling uncomfortable. For example, an automatic blind in a certain room operates so as to be completely different, and it is possible to prevent the user from feeling uncomfortable.

2. Moreover, the automatic blinds 11,..., 16 can be controlled as a group according to the user's request.
3. The commonality of the control of the automatic blind 11,..., 16 can be found, and the control suitable for the outdoor environment and the indoor environment can be unified.
4). In addition, the operational effects achieved in the first embodiment are similarly achieved.

<< Other Embodiments >>
1. In the first and second embodiments, various configurations have been described, but the configurations described may be appropriately combined.
2. Further, the group control described in the second embodiment may be applied to the first embodiment.

1, 11, 12, 13, 14, 15, 16 Automatic blind 1a, 11a, 12a, 13a, 14a, 15a, 16a Slat 2 TCU (first control means)
21, 22, 23, 24, 25, 26 TCU (second control means)
B1 Nearby buildings (other buildings)
s1, s2, 12, s22 Optical sensor (sensor)
S1, S2 Blind control system w1 window

Claims (6)

An automatic blind that faces the window and automatically changes the height and inclination of the slats that block outdoor light;
A sensor for measuring the illuminance outside the window;
First control means for calculating and controlling the height and inclination of the slats of the automatic blind,
The first control means is provided in a one-to-one correspondence with the automatic blind, and the automatic blind is uniquely calculated and controlled. 2. The sensor according to claim 1, wherein the sensor is disposed at any one of a lower left corner, an upper left corner, a lower right corner, an upper right corner, and an intermediate portion of the four corners when the window is viewed from the inside. Blind control system. The blind control system according to claim 2, wherein the sensor is disposed at a lower left corner and an upper right corner or an upper left corner and a lower right corner when the window is viewed from the inside. A plurality of automatic blinds that face the window and can automatically change the height and inclination of the slats that block outdoor light,
A plurality of sensors for measuring illuminance outside the window;
A second control means provided for each of the plurality of automatic blinds, each of which calculates and controls the height and inclination of the slats of the automatic blinds uniquely;
The plurality of automatic blinds are divided into several groups;
The blind control system, wherein the automatic blinds belonging to the same group are controlled to have the same height and inclination of the slats by calculation of the corresponding second control means. 5. The blind control system according to claim 4, wherein the automatic blind is a blind disposed between pillars on the same floor of a building or a blind disposed on the same floor of the building. The control for the reflected light from the other building of the automatic blind is a predetermined amount of change in illuminance indicating how much the illuminance measurement value measured by the sensor has changed relative to the previous illuminance measurement value. The blind control system according to any one of claims 1 to 5, wherein the blind control system is performed using a threshold value.

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