KR102396495B1 - Occupancy sensing sensor based on ultrasonic doppler type - Google Patents

Abstract

A presence detection sensor based on an ultrasonic Doppler method according to the present invention comprises: an ultrasonic sensor head part disposed to be exposed to the outside of a wall body of a ceiling of an independent space for which a person enters/exits; and a power part disposed in a form embedded inside the wall body of the ceiling and coupled to the ultrasonic sensor head part in a detachable structure for which is freely detachable, wherein an ultrasonic sensor pair based on a Doppler method is mounted inside of the ultrasonic sensor head part. Therefore, the present invention is capable of realizing a highly-functional and highly-precise presence detection sensor.

Description

Occupancy sensor based on ultrasonic Doppler method {OCCUPANCY SENSING SENSOR BASED ON ULTRASONIC DOPPLER TYPE}

The present invention relates to an occupancy sensor, and more particularly, an ultrasonic Doppler method capable of determining (detecting) occupancy of a person (human body) in an independent space and automatically controlling turning on and off of a light according to the detection. It relates to a presence detection sensor based on

As is known, the ultrasonic Doppler occupancy sensor generates (transmits) ultrasonic waves (eg, 30KHz to 40KHz), not in the audible band of humans, and detects human movement through the deformation of the returning (receiving) sound waves. is the sensor.

Conventionally, a passive infrared ray (PIR) sensor (infrared human body sensor) or a radio frequency (RF) sensor is mainly used as an occupancy sensor.

The PIR sensor is a method of detecting thermal infrared movement, and it is detected only when the movement of the human body is large, and there is a limit in sensitivity in that it cannot detect even a minute movement of a finger.

Although the RF sensor can detect even minute movements and has a wide detection range, there is a problem that the detection range of the sensor penetrates the wall and detects the movement of an object outside the space to be detected, depending on the structure and properties of the wall. The disadvantage is that it is difficult to select a location.

Korean Patent Laid-Open Patent No. 10-2015-0004150 (published on: January 12, 2015)

An object of the present invention is to provide an occupancy sensor based on the ultrasonic Doppler method that can detect the movement of a person (human body) without a blind spot inside an independent space to be detected.

The present invention is to provide an application system model that can effectively promote the application scalability of the ultrasonic Doppler-based occupancy sensor by applying two relays to the power supply so that each relay is cut off after a different time elapses. .

The problem to be solved by the present invention is not limited to those mentioned above, and another problem to be solved that is not mentioned can be clearly understood by those of ordinary skill in the art to which the present invention belongs from the following description. will be.

According to one aspect, an ultrasonic sensor head portion disposed to be exposed to the outside of a wall of a ceiling of an independent space through which a person enters and exits, and an ultrasonic sensor head portion disposed to be embedded in the wall of the ceiling, It is possible to provide an ultrasonic Doppler-based occupancy sensor including a power supply unit coupled to a detachable and detachable structure, and in which a Doppler-based ultrasonic sensor pair is mounted inside the ultrasonic sensor head.

The ultrasonic sensor head part and the power supply part of the present invention may be detachably assembled in a slide rail method sliding to one side.

The ultrasonic sensor head of the present invention includes an ultrasonic head outer cover having a structure having an internal mounting space of a predetermined size, an ultrasonic head inner cover coupled to the ultrasonic head outer cover through a plastic coupling structure, and the ultrasonic head inner cover An illuminance sensor PCB and an ultrasonic sensor PCB mounted in a mounted structure, the ultrasonic sensor head portion and the ultrasonic sensor PCB serve as a frame, and the ultrasonic head outer cover and the ultrasonic head inner cover are coupled to the ultrasonic head in an undercut structure It may include a head frame.

The illuminance sensor PCB of the present invention may be equipped with a resistance adjuster, a prefabricated illuminance transmission window having a shape surrounding the resistance adjuster, and an illuminance controller for setting the illuminance stopping the operation of the ultrasonic sensor pair.

In the ultrasonic sensor PCB of the present invention, a vibrator and a receiver are paired, the ultrasonic sensor for detecting whether a person is present in the independent space, and a lighting holding time after the ultrasonic sensor detects a person A timer adjuster for adjusting the sensitivity and a sensitivity adjuster for adjusting the detection sensitivity of the ultrasonic sensor may be mounted.

The present invention further includes a first spring hanger and a second spring hanger disposed vertically at both ends of the power supply unit and having a structure for installing an occupancy sensor at a predetermined position on the ceiling, the first spring hanger and Each of the second spring hangers may include a close support part in contact with the outer surface of one side of the power supply unit, a spring fixed to one end of the close contact support part, and a blade fixedly connected to the spring.

According to an embodiment of the present invention, a high-functionality and high-precision occupancy sensor can be realized by detecting the movement of a person (human body) without a blind spot inside an independent space to be detected based on the ultrasonic Doppler method.

According to an embodiment of the present invention, application scalability of the ultrasonic Doppler-based occupancy sensor can be effectively promoted by applying two relays so that each relay is blocked after a different time elapses, and through this, the It may be possible to use it for various purposes, such as power saving and IoT, such as blocking lights and fans, generating relay contact signals following no signal for a long period of time.

1 is a perspective view of a structure in which an ultrasonic sensor head and a power supply unit constituting an ultrasonic Doppler-based occupancy sensor according to an embodiment of the present invention are separated.
FIG. 2A is an exploded perspective view of the ultrasonic sensor head shown in FIG. 1 ;
2B is an exemplary diagram for explaining a two-channel method, and 2C is an exemplary diagram for explaining a one-channel method.
3A and 3B are exploded perspective views of the power supply unit shown in FIG. 1 ;
4 is an exemplary photograph of the power supply part PCB structure.
5 is an exemplary photograph of a terminal terminal.
FIG. 6 is an exploded view of parts of the terminal terminal shown in FIG. 5 .
7 is an exemplary photograph of a structure in which a power supply unit PCB and a terminal terminal are combined.
8A and 8B are exemplary photographs of a first spring hanger and a second spring hanger that are vertically disposed at both ends of the power supply unit as a prefabricated structure.
9a is a cross-sectional view of a structure in which two spring hangers are coupled to the occupancy sensor, and 9b is a cross-sectional view of a structure in which the occupancy sensor is installed on a ceiling using two spring hangers.
10 is a cross-sectional view of a structure in which an occupancy sensor is installed on a ceiling using a screw board.
11A is a block diagram of a front control unit of a one-channel type ultrasonic sensor, and FIG. 11B is a block diagram of a front side control unit of a one-channel type ultrasonic sensor.

First, the advantages and features of the present invention, and a method for achieving them will become clear with reference to the embodiments described below in detail in conjunction with the accompanying drawings. Here, the present invention is not limited to the embodiments disclosed below, but may be implemented in a variety of different forms, and only these embodiments allow the disclosure of the present invention to be complete, and are common in the technical field to which the present invention pertains. Since it is provided by way of example so that those with knowledge of the present invention can clearly understand the scope of the invention, the technical scope of the present invention should be defined by the claims.

In addition, in the following description of the present invention, if it is determined that a detailed description of a well-known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. And, the terms to be described later are terms defined in consideration of functions in the present invention, which may vary depending on the intentions or customs of users, operators, etc., of course. Therefore, the definition should be made based on the technical idea described throughout the description of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a structure in which an ultrasonic sensor head and a power supply that constitute an ultrasonic Doppler-based occupancy sensor according to an embodiment of the present invention are separated.

Referring to FIG. 1 , the ultrasonic sensor head 100 may be disposed to be exposed to the outside of the wall of the ceiling of an independent space (eg, living room, bedroom, kitchen, bathroom, balcony, etc.) to which a person enters and exits, and the ultrasonic sensor head A Doppler-based ultrasonic sensor pair may be mounted inside the unit 100 .

The power supply unit 200 may be disposed to be embedded in the wall of the ceiling, and may be coupled to the ultrasonic sensor head unit 100 in a detachably detachable structure, for example, by a slide rail method sliding to one side. can be assembled.

Here, manufacturing the occupancy sensor in a separate structure is to separate the ultrasonic sensor head 100 and the power supply 200, so that the power supply 200 can be used in common for both 1Way / 2Way models to improve productivity This is because not only can it be done, but it can also improve on-site A/S capability and simplify product management.

FIG. 2A is an exploded perspective view of the ultrasonic sensor head shown in FIG. 1 .

Referring to FIG. 2A , the ultrasonic sensor head unit 100 includes an ultrasonic head outer cover 110 , an ultrasonic head inner cover 120 , an illuminance sensor PCB 130 , an ultrasonic sensor PCB 140 , and an ultrasonic head frame 150 . and the like.

The ultrasonic head outer cover 110 may be manufactured in a structure having an internal mounting space of a predetermined size (eg, a space in which the illuminance sensor PCB 130 and the ultrasonic sensor PCB 140 may be mounted).

The ultrasonic head inner cover 120 has a structure similar to that of the ultrasonic head outer cover 110 , and may function as a protective cover surrounding the ultrasonic sensor PCB 140 and the illuminance sensor PCB 130 to be described later, and is combined with plastic. Through the structures 111 and 121, it can be freely coupled to the ultrasonic head outer cover 110 without screw assembly.

The illuminance sensor PCB 130 may be mounted in a structure that is mounted (mounted) on the ultrasonic head inner cover 120 , and the illuminance sensor PCB 130 has a prefabricated illuminance that surrounds a resistor (not shown). An illuminance controller 132 for setting an illuminance for stopping the operation of the transmission window 131 and an ultrasonic sensor pair to be described later may be mounted.

By sensing external light entering through the prefabricated illuminance transmission window 131 through the resistance adjuster, day and night reading can be realized.

That is, the illuminance sensor PCB 130 is equipped with a resistance adjuster for day and night division, and the illuminance adjuster 132 is coupled to the resistance adjuster to determine whether to operate through day/night division or whether to operate constantly.

A separate prefabricated illuminance light-transmitting window 131 capable of reading the intensity of external sunlight and the intensity of light from other lights is disposed on the front of the ultrasonic sensor head 100 to illuminate an independent space (eg, hallway, hallway, etc.) When the (light intensity) is bright, the operation of the ultrasonic sensor is stopped and the lamp (lamp) is not turned on. That is, the occupancy sensor according to the present embodiment may be configured to detect the intensity of external light and to limit lighting of the lamp above a certain illuminance.

For example, by setting the illuminance controller to the illuminance required to be turned on, people who are cumbersome to operate the switch may set the ultrasonic sensor not to light by stopping the operation of the ultrasonic sensor when the light of other lights installed in bright daylight or in an independent space is bright.

According to the present invention, since all the turning on/off process of the light is performed automatically, for example, it is very convenient for the elderly who have trouble operating a switch, and it is possible to prevent a safety accident that may occur when the light is turned off in a dark state in advance.

The ultrasonic sensor PCB 140 may be mounted in a structure that is mounted (mounted) on the ultrasonic head inner cover 120 , and the ultrasonic sensor PCB 140 includes a first vibrator 143a and a first receiver 143b. It may include a second ultrasonic sensor comprising a first ultrasonic sensor and a second vibrator 144a and a second receiver 144b, and through these two ultrasonic sensors, it is determined whether a person is present in the independent space. A timer controller 141 for setting the lighting holding time after the two ultrasonic sensors detect a person (human body), a sensitivity controller 142 for adjusting the detection sensitivity of the two ultrasonic sensor pairs, etc. may be mounted. .

Here, the ultrasonic sensor pair may have a structure in which two ultrasonic oscillators and two receivers are fixedly arranged in four directions at regular intervals. can be produced by selecting .

Each of the ultrasonic oscillator and the receiver is exposed at the same angle, so the ultrasonic oscillator emits ultrasonic waves, and the receiver receives reflected ultrasonic waves. If there is, it recognizes that the person is in an independent space and outputs logic.

2B is an exemplary diagram for explaining a two-channel method, and 2C is an exemplary diagram for explaining a one-channel method.

Referring to FIG. 2B , the two-channel (2way) method configures the transmitting and receiving elements (oscillator and receiver) for each left/right channel, and the space for detecting the presence of a person is double that of the one-way method.

Referring to FIG. 2C , in the one-channel method, the transmitting and receiving elements (vibrators and receivers) are configured to emit and receive ultrasonic waves in only one direction (left direction or right direction), and the space for detecting the presence of a person is 1 in the two-channel method. becomes /2.

As described above, by designing that two methods (two-channel method and one-channel method) can be selectively configured in one product, the one-channel method is selected and used in a place where the detection range is relatively narrow depending on the purpose, and relatively In a large space, the 2-channel method can be selectively used.

In addition, each of the illuminance controller 132, the timer controller 141 and the sensitivity controller 142 may be disposed to be exposed to the outside of the ultrasonic head inner cover 120 and the ultrasonic head outer cover 110 for the user's control operation. there is.

11A is a block diagram of the front control unit of the one-channel type ultrasonic sensor, and FIG. 11B is a block diagram of the front side control unit of the one-channel type ultrasonic sensor.

11A and 11B, the illuminance controller 132, the timer controller 141, and the sensitivity controller 142 are inserted into the volume of the PCB and extend to the assembly hole of the ultrasonic head inner cover 120 to extend the ultrasonic head inner cover ( 120) is exposed as a plane on the outside.

The user can simply adjust the volume and put the ultrasonic head outer cover 130 in close contact with the ultrasonic head inner cover 120 without compromising the aesthetics of the product.

When made in a one-channel method, the hole for exposing the ultrasonic element of the ultrasonic head inner cover 120 that is not used is blocked with a dedicated cover to protect the ultrasonic sensor PCB 140 from foreign substances introduced from the outside.

The prefabricated illuminance transmitting window 131 is exposed in a plane to the outside of the ultrasonic head outer cover 130 by an assembly hole penetrating the ultrasonic head inner cover 120 and the ultrasonic head outer cover 130 to form a prefabricated illuminance transmitting window 131 . ), external light can enter the internal CDS.

When the illuminance function is not used, a sticker (not shown) may serve as a cover for the assembly hole to protect the ultrasonic sensor PCB 140 from foreign substances introduced from the outside.

The sound wave head frame 150 may serve as a frame for the ultrasonic sensor head unit 100 and the ultrasonic sensor PCB 140 , and an undercut 151 is formed on the ultrasonic head outer cover 110 and the ultrasonic head inner cover 120 . ) can be structurally combined by the structure.

3A and 3B are exploded perspective views of the power supply unit shown in FIG. 1 , and FIG. 4 is an exemplary photograph of the power supply unit PCB structure.

Referring to FIGS. 3A and 3B , the power supply 200 may include a power supply frame 210 , a power supply cover 250 , a terminal cover 260 , and the like externally.

The power supply frame 210 may have a structure coupled to and fixed to the main frame accommodating the power supply PCB 220 shown in FIG. 4 , that is, the power supply PCB structure on which various electronic devices and power terminal terminals are mounted.

A drawer-type slide coupling part 211 that can be coupled to the ultrasonic sensor head 100 is protruded from the lower end of the power supply frame 210 .

Referring to FIG. 4 , the power supply unit PCB 220 accommodates (mounts) the main power device and the timer board, and three power terminal terminals 240 are mounted and connected to an external power line (eg, AC power line). , it is connected to the ultrasonic sensor head unit 100 through a wire connector to receive a signal and supply power.

The timer board 230 has a total of three times, such as a timer that determines the lighting time from the input of the ultrasonic signal, a timer that determines the additional operation time of the fan, and a timer that determines the lighting time from the input of the PIR signal when interlocking with the PIR. Determining factors may be provided.

In addition, the timer board 230 is equipped with a small auxiliary relay for fan operation, and the contact is externally wired through an output line.

Referring to FIG. 4 , when the ultrasonic sensor is detected, the contact point of the main relay 221 is attached and the connected light is turned on, and after a time set by the timer controller 141 exposed to the outside of the ultrasonic head inner cover 120 elapses, the main clock The contact of the electricity 221 is dropped and the connected light is turned off.

The main relay 221 is usually connected to a light and is used for on/off, and the auxiliary relay 231 is operated separately from the main relay 221 by attaching a contact when the ultrasonic sensor is detected, like the main relay 221 . The time is determined by a timer (built-in at the bottom of the power supply unit) that determines the time, and may be configured to maintain the state in which the contact is relatively longer than the main relay 221 .

By using this, it can be used for late-night indirect light control function, automatic light control according to external illuminance, activity signal generation using auxiliary relay, and other device control.

12 is a diagram illustrating an example installation of a secondary relay.

Referring to FIG. 12 , as a late-night time zone indirect light control function, as in FIG. 12 , if there is a need to go to the kitchen at night, the ultrasonic sensor turns on the necessary light as soon as the door is opened without looking for a switch in the dark. It makes it possible to do simple tasks, and when you close the door and go to sleep, the light is automatically turned off by the sensor.

By eliminating the act of finding a switch in the dark and turning it on and off, the safety of the elderly and children can be secured and it can contribute to the efficient use of electric energy.

As an automatic light control function according to external illuminance, the ultrasonic occupancy sensor of this embodiment is provided with a device for detecting the intensity of external light and limiting lighting above a certain illuminance.

Those who are cumbersome to operate the switch can set this illuminance adjuster to the illuminance that requires lighting, so that it does not light up by stopping the operation of the ultrasonic sensor in broad daylight or when other lights are bright in the living room.

According to this embodiment, since all the turning on/off processes are performed automatically, it is very convenient for the elderly who have trouble operating the switch, and it is possible to prevent a safety accident that may occur when the light is turned off in a dark state.

5 is an exemplary photograph of a terminal terminal, FIG. 6 is an exploded photograph of parts of the terminal shown in FIG. 5, and FIG. 7 is an exemplary photograph of a structure in which a power supply unit PCB and a terminal terminal are combined.

Referring to FIG. 5 , the terminal terminal 240 may be designed to have a simplified structure as a terminal for accommodating an AC power line, and may be directly accommodated in the power supply unit PCB 220 and soldered.

The wiring is sandwiched between the two brass plates, and it has the advantage of simple wiring work because it can be easily detached by pressure by tightening the screws.

In particular, by applying a pressure nut 242 on the back side, it can accommodate up to a thick electric wire (eg, 2 ㎟), and is a uniquely designed terminal that allows connection without damage even if it is tightened relatively strongly.

In Fig. 6, reference numeral 241 denotes a brass base, reference numeral 243 denotes a brass pressure plate, reference numeral 245 denotes a spring washer, and reference numeral 244 denotes a bolt.

Referring back to FIGS. 3A and 3B , the power supply unit cover 250 may mean a finished structure of the product functioning as the final rear cover of the power supply unit 200 .

The terminal cover 260 functions as a cover of the terminal terminal 240 , and may function to prevent an electric shock accident by exposing the brass plate when electricity is introduced after the power line is connected.

8A and 8B are exemplary photos of a first spring hanger and a second spring hanger that are vertically disposed at both ends of the power supply unit as a prefabricated structure.

Referring to FIGS. 8A and 8B , the occupancy sensor may be fixed to the ceiling by the pressure of the first and second springs 282a and 282b when the two wings 283a and 283b are swept up and spread over the ceiling hole.

To this end, the first spring hanger 280a is a first close contact support portion 281a in contact with the outer surface of one side of the power supply unit 200, a first spring 282a and a first spring fixed to one end of the first contact support portion 281a. It may consist of a first wing 283a fixedly connected to 282a.

The second spring hanger 280b is a second close contact support portion 281b in contact with the outer surface of one side of the power supply unit 200, a second spring 282b fixed to one end of the second close contact support portion 281b and a second spring 282b) It may be composed of a second wing (283b) fixedly connected to the.

9a is a cross-sectional view of a structure in which two spring hangers are coupled to the occupancy sensor, and 9b is a cross-sectional view of a structure in which the occupancy sensor is installed on a ceiling using two spring hangers.

9A and 9B, when the two wings 283a and 283b are raised and hung over the hole in the ceiling, it can be seen that the occupancy sensor is fixed to the ceiling by the pressure of the first and second springs 282a and 282b. can

Reference number 290 denotes the wall of the ceiling, and the power supply of the occupancy sensor using two spring hangers as the installation structure of the ceiling is embedded in the wall of the ceiling, and the ultrasonic sensor head is installed in such a way that it is exposed to the outside of the wall of the ceiling. can be

As a preferable ceiling material that can use a spring hanger to install the occupancy sensor in this way, for example, a hard board, a gypsum board, etc. may be mentioned.

10 is a cross-sectional view of a structure in which an occupancy sensor is installed on a ceiling using a screw board.

Referring to FIG. 10 , when assembling directly to the octagonal box on the ceiling or wall, the screw hole of the ultrasonic sensor head 100 and the screw hole of the octagonal box coincide with each other, so the two spring hangers are removed and assembled with screws. By doing so, the power supply unit 200 enters the inside of the octagonal box, and only the ultrasonic sensor head unit 100 can be installed in such a way that it is exposed to the outside.

Reference number 290 denotes the wall of the ceiling, and the power supply of the occupancy sensor using the screw board as the installation structure of the ceiling is embedded in the wall of the ceiling, and the ultrasonic sensor head is exposed to the outside of the wall of the ceiling. there is.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains may make various substitutions, modifications, and changes within the scope not departing from the essential characteristics of the present invention. It will be easy to see that this is possible. That is, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments.

Accordingly, the protection scope of the present invention should be interpreted by the claims described below, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

100: ultrasonic sensor head unit
110: ultrasonic head outer cover
111. 121: plastic coupler
120: ultrasonic head inner cover
130: light sensor PCB
131: prefabricated illuminance transmission window
132: dimmer controller
140: ultrasonic sensor PCB
141: timer adjuster
142: sensitivity control
143a: first oscillator
143b: first recipient
144a: second oscillator
144b: second receiver
150: ultrasonic head frame
200: power unit
210: power supply frame
211: drawer type slide coupling part
220: power part PCB
221: main relay
230: timer board
231: auxiliary relay
240: power terminal terminal
250: power supply cover
260: terminal cover
280a: first spring hanger
280b : 2nd spring hanger
281a: first close contact support
281b: second close contact support
282a: first spring
282b: second spring
283a: first wing
283b: 2nd wing

Claims (6)

An ultrasonic sensor head portion disposed so as to be exposed to the outside of the wall of the ceiling of an independent space to which a person enters and exits;
It is disposed in a form buried inside the wall of the ceiling, and includes a power supply unit coupled to the ultrasonic sensor head in a detachably detachable structure,
A Doppler-based ultrasonic sensor pair is mounted inside the ultrasonic sensor head,
In the ultrasonic sensor PCB,
The ultrasonic sensor is a pair of a vibrator and a receiver, and the ultrasonic sensor detects whether a person is present in the independent space;
a timer controller for setting a lighting holding time after the ultrasonic sensor detects a person;
A sensitivity controller for adjusting the detection sensitivity of the ultrasonic sensor is mounted
An occupancy sensor based on the ultrasonic Doppler method. The method of claim 1,
The ultrasonic sensor head unit and the power supply unit,
It is a slide rail that slides to one side and can be detachably assembled.
An occupancy sensor based on the ultrasonic Doppler method. The method of claim 1,
The ultrasonic sensor head unit,
An ultrasonic head outer cover having a structure having an internal mounting space of a predetermined size;
an ultrasonic head inner cover coupled to the ultrasonic head outer cover through a plastic coupling structure;
an illuminance sensor PCB and an ultrasonic sensor PCB mounted on the ultrasonic head inner cover;
and an ultrasonic head frame that serves as a frame for the ultrasonic sensor head and the ultrasonic sensor PCB, and is coupled to the ultrasonic head outer cover and the ultrasonic head inner cover in an undercut structure
An occupancy sensor based on the ultrasonic Doppler method. 4. The method of claim 3,
On the illuminance sensor PCB,
resistance regulator and
A prefabricated illuminance transmission window having a shape surrounding the resistance regulator;
An illuminance controller for setting an illuminance that stops the operation of the ultrasonic sensor pair is mounted
An occupancy sensor based on the ultrasonic Doppler method. delete The method of claim 1,
A first spring hanger and a second spring hanger disposed vertically at both ends of the power supply unit and having a structure for installing an occupancy sensor at a predetermined position on the ceiling further include,
Each of the first spring hanger and the second spring hanger,
And a close support portion in contact with the outer surface of one side of the power supply,
a spring fixed to one end of the close support part;
consisting of a wing fixedly connected to the spring
An occupancy sensor based on the ultrasonic Doppler method.

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