JP2006234526A - Optical signal switching device, lighting device, and wiring accessories - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical signal switching device which can easily set a detection distance of a reflected wave of a light receiving element, and can prevent a malfunction. <P>SOLUTION: A reflected wave from an object of an optical signal emitted from a light emitting element which emits the optical signal is received by the light receiving element. A received light signal processor 17 outputs an on/off signal for a load on the basis of the optical signal received by the light receiving element 16. An arithmetic processing unit 14, when a setting change instruction for the level of the optical signal is outputted from a setting means 20, outputs the optical signal to the light emitting element 12 with changing its level, and sets a level when the light receiving element 16 receives the optical signal to be the level of the optical signal emitted from the light emitting element 12. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an optical signal switch device, an illumination device, and a wiring fixture that turn on and off a load in response to a reflected wave of an optical signal.

  For example, a projector that emits an optical signal and a receiver that receives the reflected wave are incorporated in the main body of the lighting device, and when a person holds his hand, the optical signal from the projector is reflected by hand, and the reflected wave is received. Some lamps are turned on and off by receiving light from the instrument.

In such an illuminating device, the signal from the light receiver is amplified by the amplifying unit, the sensitivity is adjusted by the sensitivity adjusting unit, the noise is removed by the noise removing unit, the waveform is shaped by the waveform shaping unit, and then the latch unit is used. The signal is held, and the drive unit outputs to the lighting circuit of the lighting device that a person has turned on and off. Also, in order to prevent load malfunction due to harmonics, the filter circuit removes the noise contained in the reflected wave received by the receiver, amplifies the reflected wave from which the noise has been removed, and amplifies the amplified circuit. In some cases, the reflected wave is shaped by a waveform shaping circuit, and the output level is inverted each time the reflected wave is input to turn the lamp on and off (see, for example, Patent Document 1).
JP 2004-289518 A

  However, in the conventional optical signal type switching device, the level of the optical signal emitted from the projector is set to be constant in advance, so that the detection distance for receiving the reflected wave by the light receiver is substantially constant. Therefore, when the optical signal switch device is installed in a corridor or the like, the light receiver may detect the reflected wave even in cases other than the on / off operation of the optical signal switch device held by a person. For example, the light detector may detect a reflected wave and the optical signal switch device may be turned on and off just by passing a person near the optical switch device. As described above, if the detection distance of the reflected wave by the light receiver is not appropriate, the optical signal type switching device may make a false detection not intended by the user.

  An object of the present invention is to provide an optical signal switch device, an illumination device, and a wiring fixture that can easily set a detection distance of a reflected wave of a light receiver and prevent malfunction.

  An optical signal type switching device according to the invention of claim 1 includes: a projector that emits an optical signal; a receiver that receives a reflected wave from an object of the optical signal emitted from the projector; and an optical signal that emits light from the projector Setting means for outputting a command for changing the level of the light; and when a setting change command for the level of the optical signal is output from the setting means, the level of the optical signal is changed and output to the projector. An arithmetic processing unit for setting a level at the time of receiving an optical signal to a level of an optical signal emitted from the projector; a light receiving signal processing unit for outputting a load on / off signal based on the optical signal received by the light receiver; It is characterized by comprising;

  In the present invention and the following inventions, definitions and technical meanings of terms are as follows unless otherwise specified. The optical signal type switching device switches the load on and off by the reflected wave reflected from the object by the optical signal from the projector, and when a person holds his / her hand over the projector, An operation control signal is output. The load is a lamp of a lighting device, a wash basin, a toilet flush, etc., and in short, is a target of operation / non-operation control.

  The projector emits an optical signal, for example, has an infrared light emitting diode, and outputs an optical signal having a level corresponding to the pulse signal whose duty ratio is adjusted by the arithmetic processing unit. The light receiver receives the reflected wave from the object of the optical signal emitted from the projector, and is composed of, for example, a phototransistor or a photodiode, and operates when receiving the optical signal to convert it into an electrical signal.

  The setting means outputs a command to change the level of the optical signal emitted from the projector to the arithmetic processing unit. For example, it is composed of a push button switch or an infrared external signal receiver, and is provided in the optical signal switch device body.

  The arithmetic processing unit is configured by, for example, a microcomputer, and outputs a pulse signal with an adjusted duty ratio when an optical signal level setting change command is output from the setting means. For example, the pulse signal whose duty ratio is gradually increased from 0% is sequentially output to the projector. Then, the level when the optical receiver receives the optical signal is set to the level of the optical signal emitted from the projector.

  For example, hold your hand over the detection distance you want to set in advance, and output a pulse signal with the duty ratio gradually increased from 0% to the projector sequentially from the arithmetic processing unit, and the level when the optical receiver receives the optical signal Set to the level of the light signal emitted from. Thereby, it can set to a desired detection distance.

  The light reception signal processing unit outputs a load on / off signal based on the optical signal received by the light receiver. For example, the received light signal processing unit receives a filter circuit that removes noise included in the reflected wave received by the light receiver, an amplifier circuit that amplifies the reflected wave from which the noise is removed by the filter circuit, and a pulse signal from the projector The gate circuit that allows the reflected wave amplified by the amplifier circuit to pass through, the waveform shaping circuit that shapes the reflected wave that has passed through the gate circuit, and the output level each time the reflected wave shaped by the waveform shaping circuit is input An output circuit for inversion and a drive circuit for outputting a load on / off signal based on the output signal of the output circuit are provided.

  According to the present invention, since the level of the optical signal emitted from the projector can be set to a desired detection distance, the detection distance of the reflected wave by the light receiver can be appropriately set according to the installation location of the optical signal switch device.

  An optical signal type switching device according to a second aspect of the present invention includes the optical signal type switching device according to the first aspect; a lamp; a lighting device for lighting the lamp; and a lighting fixture incorporating the optical signal type switching device. And a main body. According to the present invention, an illuminating device having the effect of claim 1 can be provided.

  According to a third aspect of the present invention, there is provided a wiring device comprising: the optical signal type switch device according to the first aspect; and a wall switch body incorporating the optical signal type switch device. According to the present invention, the level at which the optical receiver detects the optical signal is set according to the detection position of the optical receiver that receives the reflected wave by incorporating the optical signal type switch device of claim 1 into the existing wall switch. The function can be improved to a wiring device having a function that can be performed.

  According to the first aspect of the present invention, the detection distance of the reflected wave of the light receiver can be easily set and changed, so that a malfunction that is not intended by the user can be prevented by changing the detection distance setting. Moreover, according to the invention of Claim 2, the illuminating device provided with the effect of Claim 1 can be provided, and according to the invention of Claim 3, the function can be improved to the wiring device having the effect of Claim 1. it can.

(First embodiment)
FIG. 1 is a block diagram of an optical signal switching device 11 according to a first embodiment of the present invention. In the first embodiment, a case where the load is a lamp is shown, and a case where the lamp is turned on and off will be described below. The projector 12 includes an infrared light emitting diode 13 that outputs an optical signal. The infrared light emitting diode 13 outputs an optical signal based on a pulse signal whose duty ratio is adjusted by the arithmetic processing unit 14. This optical signal hits the object 15, for example, the hand of a person, and the reflected wave reflected is received by the light receiver 16. The light receiver 16 is composed of, for example, a phototransistor or a photodiode, and converts an optical signal into an electrical signal. The reflected wave received by the light receiver 16 is input to the light reception signal processing unit 17, and the light reception signal processing unit 17 drives the lighting device 18 to output an on / off signal of the lamp 19 as a load. The reflected wave received by the light receiver 16 is input to the arithmetic processing unit 14 and is used by the arithmetic processing unit 14 when setting the level of an optical signal to be described later.

  The setting means 20 outputs a command for changing the level of the optical signal emitted from the infrared light emitting diode 13 of the projector 12 to the arithmetic processing unit 14. For example, the setting means 20 is provided in the optical signal switch device main body.

  The pulse signal whose duty ratio is adjusted from the arithmetic processing unit 14 is input to the transistor Tr1 via the resistors R1 and R2 of the projector 12. When the pulse signal is “1”, the transistor Tr1 is turned on, and current flows from the control power supply through the resistors R3 and R4. Further, since a current flows from the control power source to the base of the transistor Tr2 via the resistor R3, the transistor Tr2 becomes conductive, and a current flows to the infrared light emitting diode 13 via the resistors R5 and R6, so that the infrared light emitting diode 13 emits light. On the other hand, when the pulse signal whose duty ratio is adjusted from the arithmetic processing unit 14 is “0”, the transistor Tr1 is non-conductive. In this state, the transistor Tr2 is also non-conductive and the infrared light emitting diode 13 does not emit light. . The capacitor C smoothes the current flowing through the infrared light emitting diode 13.

  The filter circuit 21 of the received light signal processing unit 17 removes noise included in the reflected wave received by the light receiver 16, and the reflected wave from which the noise has been removed by the filter circuit 21 passes through the sensitivity adjustment circuit 22. Input to the amplifier circuit 23. The sensitivity adjustment circuit 22 adjusts the detection sensitivity of the reflected wave from the light receiver 16.

  The amplifier circuit 23 amplifies the reflected wave from which noise has been removed by the filter circuit 21 and whose sensitivity has been adjusted by the sensitivity adjustment circuit 22, and the amplified reflected wave is input to the gate circuit 24. A pulse signal input from the arithmetic processing unit 14 to the projector 12 is also input to the gate circuit 24, and the gate circuit 24 passes a reflected wave synchronized with the pulse signal input to the projector 12 to the waveform shaping circuit 25.

  The waveform shaping circuit 25 further shapes the waveform of the signal indicating the reflected wave that has passed through the gate circuit 24. While the reflected wave is input to the light receiver 16, a low level signal is output, and when the reflected wave is not input to the light receiver 16, a high level signal is output. Then, the output circuit 26 detects the falling edge of the signal indicating the reflected wave shaped by the waveform shaping circuit 25, detects the time point when the output signal of the waveform shaping circuit 25 falls to the low level, and outputs the output level each time. Is reversed. Thus, when a reflected wave is first input to the light receiver 16, a high level signal is output. In this state, when a reflected wave is input next to the light receiver 16, a low level signal is output.

  The drive circuit 27 outputs a lighting signal of the lamp 19 to the lighting device 18 when a high level signal is input from the output circuit 26, and the lamp to the lighting device 18 when a low level signal is input from the output circuit 26. 19 lights-out signal is output. Thus, when a person holds his hand over the projector 12 for the first time, a lighting signal is output to the lighting device 18, and when the person holds his hand over the projector 12 in that state, the lighting device 18 is A turn-off signal is output.

  FIG. 2 is an explanatory diagram of a pulse signal whose duty ratio is adjusted by the arithmetic processing unit 14. The pulse signal P1 is a signal having a duty ratio of 100%, and the pulse signal P2 is a signal having a duty ratio of about 40%. As described above, when the pulse signal is “1”, the infrared light emitting diode 13 is on, and when the pulse signal is “0”, the infrared light emitting diode 13 is off. Therefore, the ratio of the pulse signal for turning on the infrared light emitting diode 13 to “1” is changed. As a result, the optical signal level of the infrared light emitting diode 13 changes.

  FIG. 3 is a flowchart showing the processing contents of the arithmetic processing unit 14 when the optical signal level of the infrared light emitting diode 13 of the projector 12 is changed. When the setting of the optical signal level of the infrared light emitting diode 13 of the projector 12 is changed, the setting means 20 is turned on to output an optical signal level setting change command to the arithmetic processing unit 14 and the reflected wave from the projector 12 Hold your hand over the detection distance of the light receiver 16 that receives the light.

  The arithmetic processing unit 14 determines whether or not there is a duty ratio setting change request (S1). That is, it is determined whether the setting unit 20 is on. When there is a request to change the duty ratio setting, the duty ratio of the pulse signal output to the projector 12 is set to the initial value “0%” (S2), and 1% is added to the duty ratio (S3).

  Then, the arithmetic processing unit 14 determines whether or not the light receiver 16 has received an optical signal (S4). When the light receiver 12 has not received an optical signal, it is determined whether or not the duty ratio is 100%. Determine (S5). When the duty ratio is not 100%, the process returns to step S3 (S6), and when the duty ratio is 100%, abnormal processing is performed (S6). That is, since the state in which the light receiver 16 does not receive an optical signal even though the duty ratio is 100% is an abnormal state, abnormal processing such as abnormality notification is performed.

  On the other hand, when the light receiver 16 receives the optical signal in the determination of step S4, the duty ratio at that time is set as the duty ratio of the pulse signal (S7). As a result, the arithmetic processing unit 14 outputs a pulse signal to the projector 12 having the set duty ratio. When the setting change is completed, the fact may be notified.

  Thus, when the arithmetic processing unit 14 receives a command for changing the setting of the level of the optical signal of the infrared light emitting diode 13 from the setting unit 20, the arithmetic processing unit 14 changes the duty ratio of the pulse signal and sends the optical signal to the projector 12. To change the level. Then, the level when the light receiver 16 receives the optical signal is set to the level of the optical signal emitted from the projector 16.

  According to the first embodiment, the duty ratio of the pulse signal to the infrared light emitting diode 13 of the projector 12 is adjusted, and the detection position of the light receiver 16 that receives the reflected wave from the object (for example, the position where the hand is held up). ), The level at which the light receiver 16 detects the optical signal can be set, so that a malfunction that is not intended by the user can be prevented according to the installation location of the optical signal type switch device.

(Second Embodiment)
FIG. 4 is an external configuration diagram of the illumination device 28 according to the second embodiment of the present invention. The luminaire main body 29 of the illuminating device 28 incorporates the lighting device 18 and the optical signal switching device 11 of the first embodiment, and the lamp 19 is mounted inside the translucent cover 30. And the setting means 20 provided in the optical signal type switch 11 is arrange | positioned so that it may be located in the surface of the lighting fixture main body 29. FIG.

  In addition, an illumination selection switch 31 is provided on a side surface portion of the luminaire main body 29, and a projector 12 and a light receiver 16 are provided on a front surface portion on which the translucent cover 30 is provided. The light projector 12 and the light receiver 16 are provided behind the step portion 32 so that the light receiver 16 does not receive light other than the reflected wave from the light projector 12 as much as possible.

  The illumination selection switch 31 is a switch that can select, for example, three states of AUTO, OFF, and ON, and AUTO enables the light signal switch device 11 to be turned on and off, and OFF by the light signal switch device 11 Excluded from turning on and off, the lamp is turned off, and ON is a switch position that excludes turning on and off by the optical signal type switch device 11 and turns on the lamp. According to the second embodiment, an illuminating device having the effects of the first embodiment can be provided.

(Third embodiment)
FIG. 5 is a plan view of the wiring device 33 according to the third embodiment of the present invention, and shows a case where the wiring device 33 is a wall switch. The wall switch shown in FIG. 5 is obtained by replacing one switch with an optical signal type switch device with respect to an existing wall switch in which two switches are arranged in the wall switch body 34.

  The wall switch body 34 includes the lighting device 18 and the optical signal switch device 11 of the first embodiment, and is provided with one normal switch 35. A lamp that is turned on and off by a wall switch is provided on the ceiling or the like.

  That is, the illumination selection switch 31 is provided on the front surface of the wall switch body 34, and the projector 12 and the light receiver 16 are further provided. In this case, similar to the second embodiment, the light projector 12 and the light receiver 16 are provided behind the step 32 so that the light receiver 16 does not receive light other than the reflected wave from the light projector 12 as much as possible. .

  In addition, the illumination selection switch 31 is a switch that can select three states, AUTO, OFF, and ON, as in the second embodiment. The AUTO enables the light signal switch device 11 to be turned on and off. , OFF is a switch position in which the lamp is turned off by excluding lighting and extinguishing by the optical signal type switching device 11, and ON is a switch position in which the lamp is turned on by excluding lighting and extinguishing by the optical signal type switching device 11.

  According to the third embodiment, by incorporating the optical signal type switch device 11 of the first embodiment into the existing wall switch, the light receiver is adapted according to the detection position of the light receiver 16 that receives the reflected wave. The function can be improved to a wiring device having a function of setting a level at which 16 detects an optical signal.

1 is a block configuration diagram of an optical signal type switching device according to a first embodiment of the present invention. Explanatory drawing of the pulse signal by which the duty ratio was adjusted with the arithmetic processing unit in the 1st Embodiment of this invention. The flowchart which shows the processing content of the arithmetic processing unit in the case of setting-changing the optical signal level of the infrared light emitting diode of the light projector in the 1st Embodiment of this invention. The external appearance block diagram of the illuminating device which concerns on the 2nd Embodiment of this invention. The top view of the wiring fixture concerning the 3rd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Optical signal type switch apparatus, 12 ... Light projector, 13 ... Infrared light emitting diode, 14 ... Arithmetic processing device, 15 ... Object, 16 ... Light receiver, 17 ... Light reception signal processing part, 18 ... Lighting apparatus, 19 ... Lamp, DESCRIPTION OF SYMBOLS 20 ... Setting means, 21 ... Filter circuit, 22 ... Sensitivity adjustment circuit, 23 ... Amplifier circuit, 24 ... Gate circuit, 25 ... Waveform shaping circuit, 26 ... Output circuit, 27 ... Drive circuit, 28 ... Illumination device, 29 ... Illumination Instrument body 30 ... Floodlight cover 31 ... Illumination selection switch 32 ... Step part 33 ... Wiring instrument 34 ... Wall switch body 35 ... Switch

Claims (3)

A projector that emits an optical signal;
A light receiver for receiving a reflected wave from an object of an optical signal emitted from the projector;
Setting means for outputting a command for changing the setting of the level of an optical signal emitted from the projector;
When a setting change command for the level of the optical signal is output from the setting means, the optical signal is output by changing the level of the optical signal to the projector, and the level when the optical receiver receives the optical signal is emitted from the projector. An arithmetic processing unit set to a level of;
A received light signal processing unit that outputs a load on / off signal based on the optical signal received by the light receiver;
An optical signal type switching device comprising: An optical signal type switching device according to claim 1;
With a lamp;
A luminaire body having a built-in lighting device for lighting the lamp and the optical signal switch device;
An illumination device comprising: An optical signal switching device according to claim 1;
A wall switch body incorporating the optical signal switch device;
A wiring apparatus comprising:

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