KR20000015146A - Sensor switch for illuminator - Google Patents

Abstract

PURPOSE: A sensor switch for an illuminator is provided so that a user can select a light-on or light-off control operation by a sensor. CONSTITUTION: The sensor switch(30) for an illuminator includes a first and a second terminals(32, 34), a switch(40) and an illumination/movement detection circuit(50). One of the first and the second terminals is connected to a first AC supply voltage terminal and the other is connected to a second AC supply voltage terminal via the illuminator. The switch selects either a first path directly connecting the first and second terminals or a second path selectively turning on the first and the second terminals. The illumination/movement is positioned on the second path and turns on the second path for a predetermined time when there is a moving object and a peripheral illumination is lower than a predetermined reference value by detecting a peripheral illumination and the movement of the object. The switch and the illumination/movement detection circuit are formed as a one body type.

Description

Sensor switch for lighting

The present invention relates to a switch for an illumination device, and more particularly, to a switch for an illumination device incorporating an illuminance sensor and a motion detection sensor.

With the development of sensor technology and its spread, the use of sensors is expanding as a means to reduce power consumption in lighting devices. An example of a conventional lighting device employing a sensor is shown in FIG. 1. The lighting device of FIG. 1 comprises a light 2 and a small sized motion sensor and an illuminance sensor 4 installed near the light 2 and is usually installed in a corridor or staircase of a medium-large sized building or at the entrance of a house. . When such an illuminating device is provided, electric power is applied to the lighting 2 for a predetermined time when the illuminance is low and a person passes under it, and the lighting 2 emits light.

By the way, the conventional lighting apparatus as described above is usually employed only in buildings which are newly constructed because the motion sensor and illuminance sensor 4 are integrated with the illumination 2. In other words, if you want to install such a lighting device in an existing building, it is necessary to replace the entire lighting device, there is a problem that the work is cumbersome and expensive.

On the other hand, even if the lighting device is installed, it may be necessary to constantly operate the lighting device for a considerable time. Such cases include, for example, feasting at a house or preparing for a funeral, or suddenly a lot of people working at night in a business building. In this case, many people move around the lighting device, and the lighting is frequently turned on and off. Accordingly, there is a problem that power consumption is rather increased and may give psychological tension to those around them.

The present invention is to solve this problem, the sensor for controlling the lighting of the lighting is coupled to the switch, and provides a sensor switch for the lighting device to enable the lighting control operation by the sensor to be selectively made by the user Let it be the technical problem.

1 is a view showing an example of a conventional lighting device to which the sensor is applied.

2 is a block diagram of one embodiment of a sensor switch in accordance with the present invention;

3 is a detailed block diagram of the illuminance / motion detection circuit of FIG.

4 is a circuit diagram of the illuminance / motion detection circuit of FIG.

5 is a perspective view of one embodiment of a sensor switch according to the present invention;

The sensor switch for a lighting device of the present invention for achieving the above technical problem is provided with first and second terminals. One of the first and second terminals is connected to the first AC power terminal, and the other is connected to the second AC power terminal through the lighting apparatus. The switch selects either the first path or the second path that connects the first and second terminals. The first path is used to directly connect between the first and second terminals, and the second path is used to selectively connect the first and second terminals according to illuminance and motion detection. An illuminance / movement detection circuit is provided on the second path, and the illuminance / motion detection circuit detects the illuminance and the movement of the object around, for a predetermined time only when there is a moving object whose illuminance is lower than a predetermined reference value. Conducting the second path. The switch and illuminance / motion detection circuit are manufactured integrally, ie as a module.

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

Figure 2 is a block diagram of one embodiment of a sensor switch according to the present invention. The sensor switch 30 includes a switch 40 and an illuminance / motion detection circuit 50. In addition, the sensor switch 30 is connected to an external circuit through two terminals 32 and 34. That is, the terminal 32 is directly connected to one terminal of the AC power source 10, and the terminal 34 is connected to the other terminal of the AC power source 10 via the lighting 20.

The switch 40 allows the first and second terminals to be directly connected or via the illuminance / motion detection circuit 50. That is, in the switch 40, when the switching node 42 is selected, the first and second terminals are directly connected, and when the switching node 44 is selected, the first and second terminals are roughness / It is connected via the motion detection circuit (50).

The illuminance / motion detection circuit 50 detects the illuminance of the surroundings and the movement of the object so that the illumination of the switching node 44 and the sensor switch of the switch for a predetermined time only when the surrounding illuminance is lower than a predetermined reference value and there are moving objects. Conducts communication between nodes 34.

Accordingly, if the user selects the switching node 44 in the switch 40, the illumination 20 is turned on for a predetermined time only when the surrounding illuminance is lower than a predetermined reference value and there is a moving object. On the other hand, when the user selects the switching node 42 in the switch 40, the illumination 20 is continuously lit regardless of the ambient illumination or movement.

3 is a detailed block diagram of the illuminance / motion detection circuit of FIG. 2. The illuminance / motion detection circuit 50 includes an illuminance detector 52, a motion detector 54, and a power controller 56.

The illuminance detecting unit 52 senses the illuminance of the surroundings, and generates and outputs an enable signal when the illuminance is lower than the reference value. The motion detector 54 generates and outputs a trigger signal when there is a moving object in front. The power control unit 56 is enabled by the enable signal. When enabled, the power control unit 56 receives the trigger signal and conducts the second path for the predetermined time after the trigger signal is applied.

4 shows the illuminance / motion detection circuit of FIG. 2 in more detail.

The illuminance detecting unit 52 includes a cadmium sulfide (CdS) light receiving element 72 and a resistor R1. When the illuminance is high, the light receiving element 72 is turned on to exhibit a low resistance value. Therefore, the AC voltage of the node 34 is supplied to the power controller 56 as an enable signal. On the other hand, when the illuminance is low, the light receiving element 72 is turned off to show a high resistance value. Therefore, the voltage dropped via the resistor R1 is supplied to the power controller 56 as an enable signal.

The motion detector 54 includes an infrared sensor 74 and an amplifier for amplifying and integrating an output signal of the infrared sensor 74 and outputting an integrated signal as the trigger signal. In the motion detector 55, the operational amplifier 76 and its peripheral circuit amplify the output signal of the infrared sensor 55, and the operational amplifier 78 and its peripheral circuit integrate the amplified signal.

The power control unit 56 includes a triac element 80 and a control signal generation circuit. One terminal of the triac element 80 is connected to the switch terminal 44, and the other terminal is connected to the terminal 34. The control signal generator is for controlling the triac 80. In this embodiment, the control signal generator is implemented using the U2100B integrated circuit 82 and its peripheral circuit manufactured by Telefungken, Germany. The U2100B integrated circuit 82 is widely used for timing control of lighting and the like, and is well known to those skilled in the art together with the configuration of the peripheral circuit. Therefore, detailed description thereof will be omitted. The control signal generator is enabled or disabled by an enable signal. When enabled, the control signal generator receives the trigger signal and controls the lighting time by applying a predetermined control signal to the control terminal of the triac element for the predetermined time after the trigger signal is applied.

Referring to the operation of the illuminance / motion detection circuit as follows. When the illuminance is low and the power control unit 56 is enabled, when there is a moving object, the output potential of the infrared sensor 74 becomes high. This output potential is amplified and integrated. When the integrated voltage of the operational amplifier 78 reaches a DC voltage of 3 to 10V through the resistor R2 and the capacitor C1, the voltage triggers the power controller 56.

The power controller 56 receives the DC voltage rectified by the diodes D1 and D2 and performs zero-volt switching operation. The tracking time at which the triac element 80 is turned on in the power controller is determined by the resistor R3 and the capacitor C2. During the tracking time, the output signal of the integrated circuit 82 is supplied to the control terminal of the triac element 80 through the resistor R4, so that the triac element 80 is in a conductive state.

5 is a perspective view of one embodiment of a sensor switch according to the present invention.

As shown, the sensor switch of the present invention is wall-mounted and is manufactured as one piece. The sensor switch 80 of FIG. 5 has a mechanical switch 84 at the top or bottom of the front panel 82, and the other part is provided with a window 86 for the illuminance / motion sensor. A rear side of the front panel 82 is provided with a circuit board (not shown) in which the circuit of FIG. 3 is implemented. In particular, an illuminance sensor and a motion sensor are disposed behind the window 86.

In addition, it is preferable to provide a metal panel between the front panel 82 and the circuit board to shield electromagnetic waves. In addition, in such a sensor switch, it is also possible to set the response angle of a motion sensor such as an infrared sensor differently according to the application field, that is, according to the characteristics of the applied building. In addition, the sensor switch of Fig. 5 may be provided with two panels in appearance, a front panel and a rear panel, in this case. The circuit board is provided between the front panel and the rear panel.

According to the sensor switch according to the present invention as described above, there is an advantage that it is possible to increase the convenience when the lighting is turned on / off and reduce the power.

In particular, the sensor switch according to the present invention may allow the lighting device operated by the sensor to be continuously lit regardless of the operation of the sensor. Therefore, when a large amount of power consumption can be caused when the lighting device is controlled by the sensor, power consumption can be reduced by disabling the lighting control by the sensor.

Further, in the sensor switch according to the present invention, since the motion sensor and the illuminance sensor are integrated with the switch instead of the illumination, there is an advantage that it can be installed at a low cost even in an existing building.

Claims (5)

In the sensor switch for a lighting device for selectively supplying power to the lighting device, First and second terminals, one of which is connected to a first AC power terminal and the other of which is connected to a second AC power terminal through the lighting apparatus; A switch for selecting any one of a first path directly connecting the first and second terminals and a second path selectively connecting the first and second terminals; And An illuminance / motion detection circuit positioned on the second path and detecting the illuminance of the surroundings and the movement of the object so as to conduct the second path only for a predetermined time when there is a moving object whose surrounding illuminance is lower than a predetermined reference value; Including; Sensor switch for illumination device characterized in that the switch and the illuminance / movement detection circuit is made in one piece. The illuminance / motion detection circuit of claim 1, wherein An illuminance sensor configured to detect an ambient illuminance and generate and output an enable signal when the illuminance is lower than the reference value; A motion detector for generating and outputting a trigger signal when there is a moving object in front; And And a power controller which is enabled by the enable signal and receives the trigger signal and conducts the second path for the predetermined time after the trigger signal is applied. The sensor switch of claim 2, wherein the illuminance detection unit comprises a cadmium sulfide (CdS) light receiving element. The method of claim 2, wherein the motion detector Infrared sensors; And And an amplifier for amplifying the output signal of the infrared sensor and outputting the amplified signal as the trigger signal. The method of claim 2, wherein the power control unit A triac element having one terminal connected to the switch and the other terminal connected to the second terminal; And And a triac controller, which is enabled by the enable signal and receives the trigger signal and applies a predetermined control signal to the control terminal of the triac element for the predetermined time after the trigger signal is applied. switch.