KR20160021602A - Sensor apparatus and light system comprising the same - Google Patents

Abstract

The present invention relates to a sensor apparatus and a lighting system comprising the sensor apparatus, to detect a human body to keep the light turned on even without the movement of the human body, and also to continuously detect the presence of the human body only when the movement is detected after the movement of the human body is detected, thereby minimizing power consumption. The sensor apparatus according to one embodiment of the present invention comprises: a first detecting part detecting the movement of a human body; a second detecting part detecting the presence of the human body; and a control part controlling the operation of the second detecting part according to an output value of the first detecting part, and controlling an on/off state of a light according to at least one from the output value of the first detecting part and an output value of the second detecting part.

Description

TECHNICAL FIELD [0001] The present invention relates to a sensor device and a lighting system including the sensor device.

The present invention relates to a sensor device and an illumination system including the sensor device.

The occupant sensor can be used to control the lighting of the lights installed indoors. A general illumination system may be set to turn on the illumination when the human room sensor senses movement of the human body, and turn off the illumination after a predetermined period of time if the movement of the human body is not sensed. For this purpose, a passive infrared ray (PIR) sensor can be used as the occupant sensor. The PIR sensor is a sensor that detects the movement of an object with infrared rays and can be mixed with a moving IR detector.

Since the PIR sensor outputs only when an object with infrared rays moves, there is a problem that it can not be detected if there is no movement even if there is a person in the room. Various algorithms have been developed to overcome this problem of PIR sensors, but they can not cover all scenarios of human motion.

Accordingly, there is a need for a sensor device capable of detecting lighting even when there is no movement of the human body and maintaining the lighting.

SUMMARY OF THE INVENTION The present invention provides a sensor device.

A sensor device according to an embodiment of the present invention includes a first sensing unit for sensing a movement of a human body, a second sensing unit for sensing the presence or absence of a human body, and a controller for sensing driving of the second sensing unit according to an output value of the first sensing unit. And controlling the blinking of the illumination according to at least one of the output value of the first sensing unit and the output value of the second sensing unit.

The control unit may turn on the light when the output value of the first sensing unit or the output value of the second sensing unit is equal to or greater than a predetermined value.

The control unit may drive the second sensing unit when the output value of the first sensing unit is greater than a predetermined value.

The first sensing unit may be a Passive Infrared Ray (PIR) sensor that senses a change in temperature and senses a movement of the human body, and the second sensing unit may be an IR (infrared ray) sensor that senses the presence of a human body by sensing a temperature .

The second sensing unit may include a plurality of IR sensors, and the control unit may control driving of at least one IR sensor among the plurality of IR sensors.

The control unit may continuously drive only at least one IR sensor that detects the presence or absence of a human body among the plurality of IR sensors.

According to an embodiment of the present invention, there is provided a lighting system including a first sensing unit for sensing movement of a human body, a second sensing unit for sensing the presence or absence of a human body, and a controller for controlling driving of the second sensing unit according to an output value of the first sensing unit. And a control unit for controlling the blinking of the illumination according to at least one of the output value of the first sensing unit and the output value of the second sensing unit, and a control unit connected to the sensor device, Includes lighting.

According to the embodiment of the present invention, even when there is no movement of the human body, the lighting of the illumination can be maintained by sensing the human body. Particularly, the sensor device according to the embodiment of the present invention can continuously detect the presence or absence of a human body when the motion is sensed after the motion of the human body is sensed, thereby minimizing power consumption. Further, the area for detecting the presence or absence of a human body can be widened, and the reliability of detection can be increased.

1 is a block diagram of a lighting system in accordance with an embodiment of the present invention.
2 is a view for explaining a sensor device according to an embodiment of the present invention.
3 is a cross-sectional view of a sensor device according to an embodiment of the present invention.
4 is a view for explaining the driving principle of the sensor device of Fig.
5 is a cross-sectional view of a sensor device according to another embodiment of the present invention.
Fig. 6 is a view for explaining the driving principle of the sensor device of Fig. 5;
7 shows a flow chart in which a sensor device according to an embodiment of the present invention controls the flashing of illumination.

The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated and described in the drawings. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terms including ordinal, such as second, first, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the second component may be referred to as a first component, and similarly, the first component may also be referred to as a second component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings, wherein like or corresponding elements are denoted by the same reference numerals, and redundant description thereof will be omitted.

FIG. 1 is a block diagram of an illumination system according to an embodiment of the present invention, and FIG. 2 is a view for explaining a sensor apparatus according to an embodiment of the present invention.

Referring to FIG. 1, illumination system 10 includes illumination 100 and a sensor device 200.

The illumination device 100 is connected to the sensor device 200, and the blinking of the illumination device 100 is controlled by the sensor device 200.

The sensor device 200 includes a first sensing unit 210, a second sensing unit 220, and a controller 230.

The first sensing unit 210 includes a sensor for sensing a change in temperature, thereby sensing movement of the human body. The first sensing unit 210 may include a passive infrared ray (PIR) sensor, for example.

The second sensing unit 220 includes a sensor for sensing the temperature, thereby detecting the presence or absence of a human body. The second sensing unit 220 may include, for example, an infrared (IR) sensor. That is, the second sensing unit 220 can sense the temperature using the infrared rays emitted from the human body.

The control unit 230 controls the operation of the second sensing unit 220 according to the output value of the first sensing unit 210. That is, when the output value of the first sensing unit 210 is greater than a predetermined value, that is, when the motion of the human body is sensed, the controller 230 may drive the second sensing unit 220 to continuously detect the presence or absence of the human body .

The control unit 230 controls the blinking of the illumination 100 according to at least one of the output value of the first sensing unit 210 or the output value of the second sensing unit 220. For example, when the output value of the first sensing unit 210 or the output value of the second sensing unit 220 is greater than a predetermined value, that is, when the motion of the human body is sensed or a human body is sensed, Can be turned on.

In general, an IR sensor that senses a temperature can detect even if there is no movement of the human body, but there is a problem that power consumption is larger than that of a PIR sensor. Therefore, if the PIR sensor is driven at all times and the IR sensor is further driven only when the motion of the human body is sensed by the PIR sensor, the power consumption can be reduced while improving the sensing performance.

Specifically, referring to FIG. 2, the PIR sensor 210 detects the movement of an infrared object, for example, a human body. The PIR sensor 210 transmits the sensed signal to the control unit 230, and the control unit 230 lights the light 100. Although not shown, an amplifier and a filter may be further included between the PIR sensor 210 and the controller 230. Accordingly, the signal output from the PIR sensor 210 may be amplified through an amplifier, filtered through a filter, and received by the controller 230. A comparator may be further included between the PIR sensor 210 and the controller 230 or an analog-to-digital converter (ADC) may be further included in the controller 230. Accordingly, the signal output from the PIR sensor 210 can be converted into a digital signal and processed.

Meanwhile, when the motion of the human body is detected by the PIR sensor 210, the controller 230 may drive the IR sensor 220. [ A switch S and an amplifier A may be further included between the controller 230 and the IR sensor 220. [ As described above, the IR sensor 220 is not driven at all times, but can be driven only when an instruction is given by the control unit 230. [ Therefore, the IR sensor 220 consuming a large amount of power is driven only when necessary, so that the power consumption can be reduced.

When the IR sensor 220 senses the human body by sensing the temperature, the IR sensor 220 transmits the sensed signal to the controller 230, and the controller 230 lights the light 100. Accordingly, even if the human body does not move for a predetermined period of time after entering the detection range of the sensor device 200, the illumination 100 can be maintained in a continuously lit state.

Hereinafter, a sensor device according to an embodiment of the present invention will be described more specifically with reference to the drawings.

FIG. 3 is a cross-sectional view of a sensor device according to an embodiment of the present invention, FIG. 4 is a view illustrating a driving principle of the sensor device of FIG. 3, and FIG. 5 is a cross-sectional view of a sensor device according to another embodiment of the present invention And Fig. 6 is a view for explaining the driving principle of the sensor device of Fig.

3 to 4, the sensor device 300 includes a substrate 310, a PIR sensor 320 disposed on the substrate 310, and a PIR sensor 320 electrically connected to the substrate 310, An IR sensor 330 spaced apart and a structure 340 covering the PIR sensor 320 and the IR sensor 330.

The infrared rays input to the PIR sensor 320 can be detected through the structure 340, that is, the Fresnel lens. In addition, infrared rays input to the IR sensor 330 can be detected through the holes formed in the structure 340.

Although not shown, the substrate 310 may be electrically connected to the controller, and the controller and the PIR sensor 320 may transmit and receive signals through the substrate 310. The controller and the IR sensor 330 may be connected to the substrate 310, Lt; RTI ID = 0.0 > and / or < / RTI >

The sensor device 300 may be mounted on a ceiling or a wall. When a person enters the room where the sensor device 300 is installed, the PIR sensor 320 can sense a movement of a person. When a human motion is sensed, a control unit (not shown) of the sensor device 300 may drive the IR sensor 330. FIG. The IR sensor 330 can sense the presence or absence of the human body by sensing the temperature in the temperature sensing area of the IR sensor 330, even if the person entering the room stops moving further.

Accordingly, even if the person enters the room and remains stopped for a predetermined time, the control unit (not shown) can make the lighting (not shown) continuously lit.

On the other hand, although the temperature sensing IR sensor can detect the human body even if there is no movement of the human body, the detection angle is narrower and the sensing distance is shorter than that of the PIR sensor. 5 to 6, the sensor device 500 includes a substrate 510, a PIR sensor 520 disposed on the substrate 510, a substrate 510 electrically connected to the PIR sensor 520, And a Fresnel lens 540 surrounding the IR sensor 530 and the PIR sensor 520. The IR sensor 530 is spaced apart from the IR sensor 520 by a predetermined distance.

Description of the contents overlapping with those of Figs. 3 to 4 will be omitted. The sensor device 500 may be installed on the ceiling or on the wall. When a person enters the room where the sensor device 500 is installed, the PIR sensor 520 can sense a movement of a person. When a human motion is sensed, a control unit (not shown) of the sensor device 500 can drive a plurality of IR sensors 530.

On the other hand, the IR sensor 530 may have a narrower sensing area than the PIR sensor 520. [ Accordingly, by arranging the plurality of IR sensors 530, it is possible to maximize the area in which the presence of the human body is detected, thereby increasing the reliability of the sensor device 500. [

If one of the plurality of IR sensors 530 senses the temperature, i.e., the presence or absence of a human body, in the temperature sensing area of the IR sensor 530, the corresponding IR sensor can transmit a signal to the controller (not shown). Accordingly, the control unit may continuously drive only the IR sensor that detects the presence of the human body, and may not drive the remaining IR sensors. Therefore, power consumption due to driving of the IR sensor can be reduced.

7 shows a flow chart in which a sensor device according to an embodiment of the present invention controls the flashing of illumination. Here, the sensor device includes one PIR sensor and three IR sensors (IR sensor 1, ..., IR sensor 3), and the PIR sensor senses a change in temperature within a region A of FIG. 8, And the three IR sensors (IR sensor 1, ..., IR sensor 3) detect the temperature in the areas A1, A2, and A3, that is, the presence or absence of a human body, respectively. It is assumed that after the person enters the area A, the person stays in the area A1 without movement for a predetermined time, and then moves into the area A2.

Referring to FIG. 7, when a person enters the area A, the PIR sensor senses the motion of the human body (S700) and transmits the sensed signal to the controller (S702).

Accordingly, the control unit instructs all the IR sensors (i.e., the IR sensor 1, the IR sensor 2, and the IR sensor 3) that sense the A area to start driving (S704) Sensor 2, and IR sensor 3) are turned on to detect the presence or absence of a human body (S706).

If the person stays motionless for a predetermined time in the area of A1, the IR sensor 1 detects the presence of the human body (S708) and transmits the sensed signal to the control unit (S710).

Accordingly, the control unit can instruct the IR sensor 2 and the IR sensor 3 to stop driving (S712). Accordingly, power consumed due to unnecessary driving of the IR sensor can be reduced.

On the other hand, when the person moves from the A1 region to the A2 region, the PIR sensor senses the movement of the human body (S714), and transmits the sensed signal to the control unit (S716).

Accordingly, the control unit instructs all the IR sensors (i.e., the IR sensor 1, the IR sensor 2, and the IR sensor 3) that sense the A area to start driving (S718) Sensor 2, and IR sensor 3) are turned on to detect the presence or absence of a human body (S720).

If the person stays motionless for a predetermined time in the area of A2, the IR sensor 2 senses the presence of the human body (S722) and transmits the sensed signal to the controller (S724).

Accordingly, the control unit can instruct the IR sensor 1 and the IR sensor 3 to stop sensing (S726).

 As described above, according to the embodiment of the present invention, even if there is no movement for a predetermined time after the person enters the room, the lighting can be continuously turned on. In addition, even if a person repeatedly moves and stops, the light can be continuously turned on.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims It can be understood that

100: Lighting
200: Sensor device

Claims (7)

A first sensing unit for sensing a movement of a human body,
A second sensing unit for sensing the presence or absence of a human body, and
A control unit for controlling the driving of the second sensing unit according to the output value of the first sensing unit and controlling the blinking of the lighting according to at least one of the output value of the first sensing unit and the output value of the second sensing unit,
. The method according to claim 1,
Wherein the controller illuminates the light when the output value of the first sensing unit or the output value of the second sensing unit is equal to or greater than a predetermined value. The method according to claim 1,
Wherein the control unit drives the second sensing unit when the output value of the first sensing unit is greater than or equal to a predetermined value. The method according to claim 1,
The first sensing unit is a Passive Infrared Ray (PIR) sensor that senses a change in temperature and senses a movement of a human body. The second sensing unit senses the temperature to detect the presence or absence of a human body. . 5. The method of claim 4,
Wherein the second sensing unit includes a plurality of IR sensors,
Wherein the control unit controls driving of at least one IR sensor among the plurality of IR sensors. 6. The method of claim 5,
Wherein the control unit continuously drives only at least one IR sensor that detects the presence or absence of a human body among the plurality of IR sensors. A second sensing unit for sensing the presence or absence of a human body, and a controller for controlling driving of the second sensing unit according to an output value of the first sensing unit, And a control unit for controlling the blinking of the illumination according to at least one of the output values of the second sensing unit, and
A light source connected to the sensor device and controlled by the sensor device,
≪ / RTI >

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