JP2002367789A - Electronic ballast - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic ballast which realizes many kinds of lighting control functions with one set without making a circuitry or the like complicated. SOLUTION: The ballast is equipped with a rectifying circuit 12 to rectify an AC power source 2, an inverter 15 to be connected between the rectifying circuit 12 and a lamp 3, a one chip microcomputer 18 to control the inverter 15. The microcomputer 18 is configured to be able to perform selectively a plurality of control processes based on one or more pieces of information out of temperature detection information, human sensing information, illuminance information or dimming rate information.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic ballast used for industrial lighting equipment and the like.

[0002]

2. Description of the Related Art Examples of an electronic ballast used for lighting control of a lamp such as a fluorescent lamp include, for example, a noise filter for removing an AC noise component from an AC power supply, and rectifying and smoothing the AC after removing the noise component. A rectifier circuit comprising a pair of switching elements (power MOSFETs) and an inverter comprising a pair of switching elements (power MOSFETs), and a control circuit for controlling the inverters. There is a method of converting a DC power supply from a power source into a high-frequency voltage and supplying it to a lamp.

[0003]

In an electronic ballast, for example, a function of controlling lamp preheating, a function of automatically turning off a lamp, a function of dimming and lighting a lamp according to the brightness of a room, Alternatively, a lighting control function such as a function of turning on / off a lamp by a remote control is added.

Conventionally, most of such lighting control functions have been commercialized by incorporating only one function into one electronic ballast (lighting fixture). For this reason, in order to meet the needs of the user, it is necessary to arrange lighting equipment for each lighting control function for each function, which increases the cost required for product development and manufacturing. Further, when the lighting control method is changed after the lighting fixture is installed, it is necessary to replace the electronic ballast or replace the entire lighting fixture.

It is technically possible to provide a plurality of types of lighting control functions in one electronic ballast, but the circuit configuration of the electronic ballast becomes complicated and the product cost increases. There's a problem. Further, if the number of lighting control functions provided in one unit is large, it is difficult to realize the lighting control function.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide an electronic ballast capable of realizing a variety of lighting control functions with a single device without complicating the circuit configuration and the like. And

[0007]

The electronic ballast of the present invention comprises:
An electronic ballast used to control the lighting of a lamp, a rectifier circuit for rectifying an AC power supply, an inverter connected between the rectifier circuit and the lamp, and a one-chip microcomputer (one-chip microcomputer) for controlling the inverter. Microcomputer), and the one-chip microcomputer selectively executes a plurality of types of control processing based on one or more of temperature detection information, human detection information, illuminance information, or dimming rate information. It is characterized by being configured to be able to.

The control processing executed by the electronic ballast according to the present invention includes preheating control of the lamp, lighting / extinguishing control or lighting / dimming lighting control based on human detection, dimming lighting and lighting control in consideration of room brightness. Dimming lighting according to the rate information may be mentioned.

In the electronic ballast according to the present invention, the one-chip microcomputer executes a process of recording an accumulated lamp lighting time and displays an initial illuminance correction process of the lamp or a lamp replacement time based on the accumulated lighting time. It may be configured to execute processing.

An electronic ballast according to the present invention is an electronic ballast used for controlling lighting of a lamp, comprising: a rectifier circuit for rectifying an AC power supply; an inverter connected between the rectifier circuit and the lamp; A one-chip microcomputer that controls the inverter; and a receiving unit that receives temperature detection information, human sensing information, illuminance information, dimming rate information, or cumulative lighting time information, wherein the one-chip microcomputer is configured to receive one of the received information.
It is characterized by being configured to be able to selectively execute a plurality of types of control processes based on one or a plurality of pieces of information.

The control processing executed by the electronic ballast according to the present invention includes preheating control of the lamp, lighting / extinguishing control or lighting / dimming lighting control by human detection, dimming lighting taking into account the brightness of the room, and dimming. Examples include dimming lighting according to the rate information, lamp initial illuminance correction processing based on the cumulative lighting time, and processing for displaying a lamp replacement time based on the cumulative lighting time.

Here, the above-described lamp initial illuminance correction processing is, as shown in FIG. 18, where the lamp illuminance is changed to the design illuminance (120) in the initial state when the lamp is mounted (replaced).
00 hours), which is excessively bright.
This is a process for suppressing the extra brightness for the design illuminance.

According to the electronic ballast of the present invention, since a one-chip microcomputer is mounted, many types of control processing (without increasing the number of functional parts constituting the ballast or complicating the circuit configuration) Lighting control function) can be easily realized by software. Therefore, it is not necessary to arrange a ballast for each lighting control function.

Further, one or more of the various types of control processing can be easily selected by operating a function changeover switch or the like. Can be easily changed on the side.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a circuit diagram of an electronic ballast according to an embodiment of the present invention.

The electronic ballast 1 of this embodiment is a device used for controlling the lighting of a lamp 3 such as a fluorescent lamp. The electronic ballast 1 includes a noise filter 11 for removing an AC noise component from an AC power supply 2, and a noise filter 11. Rectifier circuit 12 for rectifying and smoothing AC after removing components, power factor correction circuit 13, D / D converter 14, inverter 15, lamp presence / absence detection circuit 1
6, lamp current detection circuit 17, one-chip microcomputer 1
8, an interface 19 and the like. The one-chip microcomputer 18 is, for example, H8 / 3664 manufactured by Hitachi, Ltd. (flash memory version 1).
6-bit CPU). The one-chip microcomputer 18 is supplied with drive power (DC power) from the D / D converter 14.

The inverter 15 includes a pair of switching elements (power MOSFETs) 15H and 15L (see FIG. 2).
, And is connected between the rectifier circuit 12 (power factor correction circuit 13) and the lamp 3.

The one-chip microcomputer 18 includes the inverter 1
The DC power supply from the rectifier circuit 12 is converted into a high-frequency voltage and supplied to the lamp 3 by alternately controlling the pair of switching elements 15H and 15L to the ON state. The specific frequency control will be described with reference to FIGS.

The one-chip microcomputer 18 generates an (H) -side output (pulse waveform) and an (L) -side output (pulse waveform) by using a CPU main clock and a timer, and converts each pulse waveform into an inverter. 15 switching elements 15
H, 15L, the pair of switching elements 15H, 15L are alternately turned on. Further, the pulse waveform supplied to the inverter 15 is set to 40
Continuous dimming control is performed by changing from KHz (no dimming) to 95 KHz (with dimming).

Further, the one-chip microcomputer 18 outputs the (H) side output pulse waveform supplied to the inverter 15 and (L)
A side output pulse waveform is a pulse waveform as shown in FIG.
That is, assuming that a pair of switching elements 15H and 15L have a pulse waveform in which the time from the fall of (H) to the rise of (L) and the time from the fall of (L) to the rise of (H) are controlled. The high-frequency voltage supplied to the lamp 3 has a positive / negative asymmetric waveform, and it is possible to prevent the occurrence of snake (moving fringes) at low temperatures.

The one-chip microcomputer 18 monitors functions provided in a general electronic ballast, for example, the output of the lamp current detecting circuit 17, and when an abnormality occurs in the lamp current or the load current, the lamp is turned on. Stop protection function,
And a function of detecting whether or not the lamp 3 is mounted based on a signal from the lamp presence / absence detection circuit 16.

Next, the electronic ballast 1 of the present embodiment will be described in more detail.

First, the electronic ballast 1 of this embodiment is provided with a function changeover switch 21 as shown in FIG. Also, a temperature sensor 22 and a lighting time setting switch 2
3, dimming setting switch 24, reset switch 25 (for resetting initial illuminance correction), human detection ON relay 26, dimming ON relay 27, human detection sensor 28, illuminance sensor 29,
Lamp replacement indicator light 30, step light control I / F 31, continuous light control I
/ F32 and peripheral devices such as an SCI communication unit 33 that communicates with a host device.

The lighting time setting switch 23 can set the lighting time: 5 minutes, 10 minutes or 20 minutes to the one-chip microcomputer 18 (the time can be set arbitrarily). The dimming setting switch 24 has dimming rates of 0% and 35%.
Alternatively, 50% can be set in the one-chip microcomputer 18. Further, a step light control signal having a light control rate of 0%, 35%, or 50% is input to the step light control I / F 31 from an external device. The continuous light control I / F 32 receives a continuous light control signal (DUTY signal: light control rate 0% to 100%) from an external device.

The electronic ballast 1 has 12 operation modes (operation modes M01) according to the setting of the function changeover switch 21.
To M12) can be selected, and a device to be mounted is specified from among the peripheral devices as shown in FIG. 4 according to the selected operation mode.

The one-chip microcomputer 18 operates in one of the operation modes M01 to M1 based on information from the specified peripheral device.
2 is executed to execute each control process. Details of each of the operation modes M01 to M12 will be described below.

It should be noted that the one-chip microcomputer 18 has
As shown in the table, a preheating table T1, a temperature and illuminance characteristic table T2, a luminous flux maintenance ratio table T3, an illuminance sensor table T4, and an inverter output counter table T5 are set. The information in each of these tables is obtained in advance by an experiment, calculation, or the like, and the respective values are recorded. The inverter output counter table T5 is a table in which the output values (40 KHz to 95 KHz) from the CPU of the one-chip microcomputer 18 to the inverter 15 are defined.

The one-chip microcomputer 18 has four
When performing lighting control in a set (operation modes M04 and M05), a relay signal can be output to the other three electronic ballasts 1 via the interface 19.

<Operation mode M01> This operation mode M0
In step 1, an inverter output counter uses the detection signals of the temperature sensor 22 and the human detection sensor 28 and the set value of the lighting time setting switch 23 to refer to the preheating table T1, the temperature and illuminance characteristic table T2, and determine the optimum value. Lighting control is performed by selecting from the table T5. Specific processing will be described with reference to the flowchart of FIG.

Step S11: Based on the temperature detected by the temperature sensor 22 and the preheating table T1, preheating is performed for a time suitable for the outside air temperature.

Step S12: The output of the human sensor 28 is monitored. If there is a human detection signal, the flow proceeds to step S13. If there is no human detection signal, the flow proceeds to step S15.

Step S13: Lighting time setting switch 2
Lighting time set in 3 (n minutes: 5 minutes / 10 minutes / 20
Minute) lighting timer (not shown: one-chip microcomputer 18)
Set to).

Step S14: Lights based on the temperature detected by the temperature sensor 22, the temperature and illuminance characteristic table T2, and the inverter output counter table T5, and returns to step S12.

Step S15: When there is no human detection signal from the human detection sensor 28, the lamp is turned on in consideration of the temperature and the illuminance characteristics from that time until the lighting time set in the lighting timer elapses. (Step S1
4) After the set time of the lighting timer has elapsed, the process proceeds to step S16, and after the lamp 3 is turned off, the process proceeds to step S16.
Return to 12.

In this operation mode M01, in summer /
Appropriate preheating can always be performed according to the season (temperature) such as winter. Further, appropriate lighting control in consideration of the temperature can be performed. Further, when the person is no longer sensed, for example, when the person leaves the room, the lamp 3 is turned off when a set time (for example, 5 minutes / 10 minutes / 20 minutes) elapses.
Are turned off, so that unnecessary lighting can be eliminated and energy saving can be achieved.

<Operation mode M02> This operation mode M0
In the step 2, the respective detection signals of the temperature sensor 22 and the human sensor 28 and the respective setting values of the lighting time setting switch 23 and the dimming setting switch 24 are used, and the optimum values are obtained by referring to the preheating table T1 and the temperature and illuminance characteristic table T2. The appropriate value is selected from the inverter output counter table T5 to perform lighting control.
Specific processing will be described with reference to the flowchart of FIG.

Step S21: Preheating is performed for a time suitable for the outside air temperature based on the temperature detected value by the temperature sensor 22 and the preheating table T1.

Step S22: The output of the human sensor 28 is monitored. If there is a human detection signal, the flow proceeds to step S23. If there is no human detection signal, the flow proceeds to step S25.

Step S23: Lighting time setting switch 2
Lighting time set in 3 (n minutes: 5 minutes / 10 minutes / 20
Minute) lighting timer (not shown: one-chip microcomputer 18)
Set to).

Step S24: The lamp 3 is controlled to be turned on based on the temperature detected by the temperature sensor 22, the temperature and illuminance characteristic table T2, and the inverter output counter table T5, and the process returns to step S22.

Step S25: When there is no human detection signal from the human detection sensor 28, the lamp is turned on in consideration of the temperature and the illuminance characteristics from that time until the lighting time set in the lighting timer elapses. (Step S2
4), when the set time of the lighting timer has elapsed, the process proceeds to step S26.

Step S26: The temperature detection value and temperature of the temperature sensor 22 and the illuminance characteristic table T2, and the dimming rate (0% / 35% / 5) set by the dimming setting switch 24
0%), the lamp 3 is dimmed and turned on, and step S2 is performed.
Return to 2.

In this operation mode M02, in summer /
Appropriate preheating can always be performed according to the season (temperature) such as winter. Further, appropriate lighting control in consideration of the temperature can be performed.

Further, when the person is no longer sensed, for example, when the person leaves the room, the setting is made by operating the dimming setting switch 24 after a set time (for example, 5 minutes / 10 minutes / 20 minutes) has elapsed. The lamp 3 is dimmed and lit according to the adjusted dimming rate (for example, 35% or 50%). Also,
If the dimming rate is set to 0% by operating the dimming setting switch 24, the lamp 3 is turned off after a lapse of a predetermined time after the absence of a person, so that useless lighting can be eliminated and the power consumption can be reduced. Energy can be achieved.

<Operation mode M03> This operation mode M0
In step 3, using the detection signal of the temperature sensor 22, referring to the preheating table T1, the temperature and illuminance characteristic table T2, and the luminous flux maintenance rate table T3, select an optimal value from the inverter output counter table T5 and perform lighting control. Specific processing will be described with reference to the flowchart in FIG.

Step S31: Based on the temperature detected by the temperature sensor 22 and the preheating table T1, preheating is performed for a time suitable for the outside air temperature.

Step S32: One of the current lamps 3 is determined based on the current accumulated lighting time and the luminous flux maintenance ratio table T3.
The illuminance of 00% is obtained, and the lamp 3 is dimmed and turned on so that the illuminance becomes the designed illuminance, thereby suppressing the initial extra illuminance (initial illuminance correction processing). Further, lighting control is performed based on the temperature detected value by the temperature sensor 22, the temperature and the illuminance characteristic table T2, and the inverter output counter table T5.

Here, the initial extra illuminance is, as shown in FIG. 18, in the initial state when the lamp is mounted (at the time of replacement), the lamp illuminance is excessively brighter than the design illuminance (after 12,000 hours). And refers to the extra brightness for this design illuminance.

Step S33: When the reset switch 25 is operated after the lamp replacement, the cumulative lighting time is reset (= 0) (step S34), and the process proceeds to step S35. If the reset switch 25 has not been operated, the process proceeds directly to step S35.

Step S35: It is determined whether or not it is time to replace the lamp based on the current cumulative lighting time. If the cumulative lighting time has not reached the lamp replacement time, the lamp replacement indicator lamp 30 is not turned on ( Step S37), Step S3
Proceeding to step 8, record the cumulative lighting time, and return to step S32. When the lamp replacement time has come, the lamp replacement indicator light 30 is turned on (step S36), the accumulated lighting time is recorded (step S38), and the process returns to step S32.

In this operation mode M03, in summer /
Appropriate preheating can always be performed according to the season (temperature) such as winter. In addition, since excess initial illuminance is suppressed and appropriate lamp lighting is performed in consideration of temperature, energy saving can be achieved. Further, the lamp replacement indicator 3
Since the notification can be made at 0, the user can easily grasp the lamp replacement time.

<Operation mode M04> This operation mode M0
4, using the detection signals of the temperature sensor 22 and the human sensor 28 and the set value of the lighting time setting switch 23, refer to the preheating table T 1 and the temperature and illuminance characteristic table T 2, and determine the optimum value from the inverter output counter table. Lighting control is performed by selecting four lamps 3 as one set by selecting from T5. Each electronic ballast 1 is equipped with a human sensing ON relay 26.

The specific processing contents of the operation mode M04 will be described with reference to the flowchart of FIG.

Step S41: Preheating is performed for a time suitable for the outside air temperature based on the temperature detected by the temperature sensor 22 and the preheating table T1.

Step S42: The output of the human sensor 28 is monitored. If there is a human detection signal, the flow proceeds to step S43. If there is no human detection signal, the flow proceeds to step S46.

Step S43: Lighting time setting switch 2
Lighting time set in 3 (n minutes: 5 minutes / 10 minutes / 20
Minute) lighting timer (not shown: one-chip microcomputer 18)
Set to).

Step S44: The lamp 3 is turned on based on the temperature detected by the temperature sensor 22, the temperature and illuminance characteristic table T2, and the inverter output counter table T5. At the same time, a relay signal (relay ON) is output to the human-sensing ON relays 26 of the other electronic ballasts 1 (three), and all lamps 3 in one set are simultaneously turned on (step S45). It returns to step S42.

Step S46: When there is no human detection signal from the human detection sensor 28, the lamp is lit in consideration of the temperature and the illuminance characteristics from that time until the lighting time set in the lighting timer elapses. (Step S4
4) When the set time of the lighting timer has elapsed, the process proceeds to step S47, and the lamp 3 is turned off. At the same time,
The human sensing ON relay 26 of the other electronic ballasts 1 (three)
A relay signal (relay OFF) is output (step S4
8) After turning off all lamps 3 in one set at the same time, the process returns to step S42.

In this operation mode M04, in summer /
Appropriate preheating can always be performed according to the season (temperature) such as winter. Further, appropriate lighting control in consideration of the temperature can be performed. Furthermore, lighting / light-out control can be performed by one set of four units.

<Operation mode M05> This operation mode M0
5, each detection signal of the temperature sensor 22 and the human detection sensor 28, the set value of the lighting time setting switch 23, and the step light control signal (light control ratio: externally input via the step light control I / F 31). 0% / 35% / 50%) and the preheating table T
1 and the temperature and illuminance characteristic table T2, and select an optimal value from the inverter output counter table T5,
Lighting control is performed with four lamps 3 as one set. Each electronic ballast 1 is equipped with a dimming ON relay 27.

The specific processing contents of the operation mode M05 are as follows.
This will be described with reference to the flowchart of FIG.

Step S51: Preheating is performed for a time suitable for the outside air temperature based on the temperature detected value by the temperature sensor 22 and the preheating table T1.

Step S52: The output of the human sensor 28 is monitored. If there is a human detection signal, the flow proceeds to step S53. If there is no human detection signal, the flow proceeds to step S56.

Step S53: Lighting time setting switch 2
Lighting time set in 3 (n minutes: 5 minutes / 10 minutes / 20
Minute) lighting timer (not shown: one-chip microcomputer 18)
Set to).

Step S54: The lamp 3 is turned on based on the temperature detected by the temperature sensor 22, the temperature, and the illuminance characteristic table T2 (no dimming). At the same time, a relay signal (relay OFF) is output to the dimming ON relays 27 of the other electronic ballasts 1 (three) (step S55), and all the lamps 3 in one set are in a state without dimming. At the same time to return to step S52.

Step S56: When there is no human detection signal from the human detection sensor 28, the lamp is turned on (adjusted) in consideration of the temperature and illuminance characteristics until the lighting time set in the lighting timer elapses from that point. (No light) (step S54), and when the set time of the lighting timer has elapsed, the process proceeds to step S57.

Step S57: Dimming rate (0% / 35% / 50%) based on the step dimming signal, temperature and illuminance characteristic table T
The lamp 3 is dimmed and lit based on 2 and the inverter output counter table T5. At the same time, a relay signal (relay ON) is output to the dimming ON relays 27 of the other electronic ballasts 1 (three) (step S58), and all the lamps 3 in one set are in a state without dimming. At the same time, and the process returns to step S52.

In this operation mode M05, in summer /
Appropriate preheating can always be performed according to the season (temperature) such as winter. Further, appropriate lighting control in consideration of the temperature can be performed.

Further, when the person is no longer sensed, for example, when the person leaves the room, the setting is made by operating the dimming setting switch 24 after a lapse of a predetermined time (for example, 5 minutes / 10 minutes / 20 minutes). The lamp 3 is dimmed and lit according to the adjusted dimming rate (for example, 35% or 50%). Also,
If the dimming rate is set to 0% by operating the dimming setting switch 24, the lamp 3 is turned off when a predetermined time has elapsed after the absence of a person, so that unnecessary lighting can be eliminated and energy saving can be achieved. Can be achieved. In addition, such control can be performed by one set of four units.

<Operation mode M06> This operation mode M0
In step 6, using the detection signals of the temperature sensor 22 and the illuminance sensor 29, referring to the preheating table T1, the temperature and illuminance characteristic table T2, and the illuminance sensor table T4, select an optimal value from the inverter output counter table T5 and turn on the light. Perform control. Specific processing contents will be described with reference to the flowchart of FIG.

Step S61: Preheating is performed for a time suitable for the outside air temperature based on the temperature detection value of the temperature sensor 22 and the preheating table T1. Step S62: The lamp 3 based on the temperature detection value and the temperature and the illuminance characteristic table T2 by the temperature sensor 22, and the detection value of the indoor brightness by the illuminance sensor 29, the illuminance sensor table T4 and the inverter output counter table T5.
Is dimmed.

In this operation mode M06, in summer /
Appropriate preheating can always be performed according to the season (temperature) such as winter. In addition, since dimming lighting is automatically performed by detecting the brightness of the room, energy saving can be achieved.

<Operation mode M07> This operation mode M0
7, the preheat table T1, the illuminance sensor table T4, the temperature and the illuminance, using the detection signals of the temperature sensor 22, the human sensor 28 and the illuminance sensor 29, and the set values of the lighting time setting switch 23 and the dimming setting switch 24. With reference to the characteristic table T2, an optimal value is selected from the inverter output counter table T5 and lighting control is performed. Specific processing contents will be described with reference to the flowchart of FIG.

Step S71: Based on the temperature detected by the temperature sensor 22 and the preheating table T1, preheating is performed for a time suitable for the outside air temperature.

Step S72: The output of the human sensor 28 is monitored. If there is a human detection signal, the flow proceeds to step S73. If there is no human detection signal, the flow proceeds to step S75.

Step S73: Lighting time setting switch 2
Lighting time set in 3 (n minutes: 5 minutes / 10 minutes / 20
Minute) lighting timer (not shown: one-chip microcomputer 18)
Set to).

Step S74: Based on the detected temperature value of the temperature sensor 22, the temperature and the illuminance characteristic table T2, and the detected value of the room brightness by the illuminance sensor 29, the illuminance sensor table T4 and the inverter output counter table T5, The lamp 3 is dimmed and lighted in consideration of the brightness, the temperature, and the illuminance characteristics, and the process returns to step S72.

Step S75: When there is no human detection signal from the human detection sensor 28, the brightness, temperature, and illuminance characteristics of the room are considered from that time until the lighting time set in the lighting timer elapses. The lamp is turned on (step S74), and when the set time of the lighting timer has elapsed, the process proceeds to step S76.

Step S76: The temperature detected value and temperature by the temperature sensor 22 and the illuminance characteristic table T2, the room brightness detected value and the illuminance sensor table T4 by the illuminance sensor 29, and the dimming setting switch 24 are set. The lamp 3 is dimmed and turned on based on the dimming rate (0% / 35% / 50%) and the inverter output counter table T5, and the process returns to step S72.

In this operation mode M07, in summer /
Appropriate preheating can always be performed according to the season (temperature) such as winter. In addition, since dimming lighting is automatically performed by detecting the brightness of the room, energy saving can be achieved.

Further, when the person is no longer sensed, for example, when the person leaves the room, the setting is made by operating the dimming setting switch 24 after a lapse of a predetermined time (for example, 5 minutes / 10 minutes / 20 minutes). The lamp 3 is dimmed and lit according to the adjusted dimming rate (for example, 35% or 50%) and the temperature. In addition, if the dimming rate is set to 0% by operating the dimming setting switch 24, the lamp 3 is turned off after a predetermined period of time after nobody is present, so that unnecessary lighting can be eliminated. , Energy saving can be achieved.

<Operation mode M08> This operation mode M0
8 uses the output signals of the temperature sensor 22, the human sensor 28, and the illuminance sensor 29, and the set values of the lighting time setting switch 23 and the dimming setting switch 24, using a preheating table T1, a temperature and illuminance characteristic table T2, and a luminous flux. With reference to the maintenance ratio table T3, an optimal value is selected from the inverter output counter table T5 and lighting control is performed. Specific processing contents will be described with reference to the flowchart of FIG.

Step S81: Based on the temperature detected by the temperature sensor 22 and the preheating table T1, preheating is performed for a time suitable for the outside air temperature.

Step S82: The output of the human detection sensor 28 is monitored. If there is a human detection signal, the flow proceeds to step S83. If there is no human detection signal, the flow proceeds to step S85.

Step S83: Lighting time setting switch 2
Lighting time set in 3 (n minutes: 5 minutes / 10 minutes / 20
Minute) lighting timer (not shown: one-chip microcomputer 18)
Set to).

Step S84: One of the current lamps 3 is determined based on the current accumulated lighting time and the luminous flux maintenance ratio table T3.
The illuminance of 00% is obtained, and the lamp 3 is dimmed and turned on so that the illuminance becomes the designed illuminance, thereby suppressing the initial extra illuminance (initial illuminance correction processing). Further, a temperature detected value and temperature by the temperature sensor 22 and an illuminance characteristic table T2, a detected value of room brightness and an illuminance sensor table T4 by the illuminance sensor 29, and an inverter output counter table T
5, the lamp 3 is dimmed and lighted in consideration of the brightness, temperature and illuminance characteristics of the room, and the process proceeds to step S87.

Step S85: When there is no human detection signal from the human detection sensor 28, the brightness, temperature and illuminance characteristics of the room are taken into consideration from that time until the lighting time set in the lighting timer elapses. The lamp is turned on (step S84), and when the set time of the lighting timer has elapsed, the process proceeds to step S86.

Step S86: The temperature detected value and temperature by the temperature sensor 22 and the illuminance characteristic table T2, the detected value of room brightness and the illuminance sensor table T4 by the illuminance sensor 29, and set by the dimming setting switch 24. The lamp 3 is dimmed and turned on based on the dimming rate (0% / 35% / 50%) and the inverter output counter table T5, and the process proceeds to step S87.

Step S87: After the lamp is replaced, when the reset switch 25 is operated, the cumulative lighting time is reset (= 0) (step S88), and the flow proceeds to step S89. If the reset switch 25 has not been operated, the process directly proceeds to step S89 to record the cumulative lighting time.

Step S89: It is determined whether or not it is time to replace the lamp based on the current cumulative lighting time. If the cumulative lighting time has not reached the lamp replacement time, the lamp replacement indicator lamp 30 is not turned on ( Step S811), Step S
Proceeding to 812, the cumulative lighting time is recorded, and step S82 is performed.
Return to If the lamp replacement time has come, the lamp replacement indicator light 30 is turned on (step S810), and the cumulative lighting time is recorded (step S812), and step S8 is performed.
Return to 2.

In this operation mode M08, in summer /
Appropriate preheating can always be performed according to the season (temperature) such as winter. Further, since dimming lighting is performed while suppressing the initial extra illuminance, energy saving can be achieved. Furthermore, since the lamp replacement time can be notified by the lamp replacement indicator light 30, the user can easily grasp the lamp replacement time.

Further, when the person is no longer sensed, for example, when the person leaves the room, the setting is made by operating the dimming setting switch 24 after a set time (for example, 5 minutes / 10 minutes / 20 minutes) has elapsed. The dimming operation is performed in a state in which the lamp 3 suppresses extra illuminance according to the adjusted dimming rate (for example, 35% or 50%). In addition, if the dimming rate is set to 0% by operating the dimming setting switch 24, the lamp 3 is turned off after a predetermined period of time after nobody is present, so that unnecessary lighting can be eliminated. , Energy saving can be achieved.

<Operation mode M09> This operation mode M0
9, a detection signal of the temperature sensor 22 and a continuous light control signal (DUT) input from the outside via the continuous light control I / F 32.
The lighting control is performed by selecting an optimum value from the inverter output counter table T5 with reference to the preheating table T1 and the temperature and illuminance characteristic table T2 using the Y signal). Specific processing contents will be described with reference to the flowchart of FIG.

Step S91: Preheating is performed for a time suitable for the outside air temperature based on the temperature detected value by the temperature sensor 22 and the preheating table T1. Step S92: The lamp 3 is dimmed and turned on based on the dimming rate by the continuous dimming signal (DUTY signal: 0% to 100%), the temperature and illuminance characteristic table T2, and the inverter output counter table T5.

In this operation mode M09, appropriate preheating can always be performed according to the season (temperature) such as summer / winter. Further, by supplying a continuous dimming signal from an external device, it is possible to automatically perform dimming lighting according to the continuous dimming signal.

<Operation mode M10> This operation mode M1
0, the detection signal of the temperature sensor 22 and the preheating table T
With reference to 1 and the temperature and illuminance characteristic table T2, an optimum value is selected from the inverter output counter table T5 and lighting control is performed. Specific processing contents will be described with reference to the flowchart of FIG.

Step S101: Preheating is performed for a time suitable for the outside air temperature based on the temperature detected by the temperature sensor 22 and the preheating table T1.

Step S102: The light is turned on based on the temperature detected by the temperature sensor 22, the temperature and the illuminance characteristic table T2, and the inverter output counter table T5.

In this operation mode M10, in summer /
Appropriate preheating can always be performed according to the season (temperature) such as winter. Further, appropriate lighting control in consideration of the temperature can be performed.

<Operation mode M11> This operation mode M1
In FIG. 1, a detection signal of the temperature sensor 22 and a step light control signal (light control ratio: 0) input from the outside via the step light control I / F 31 are provided.
% / 35% / 50%), referring to the preheating table T1 and the temperature and illuminance characteristic table T2, select an optimum value from the inverter output counter table T5 and perform lighting control. Specific processing contents will be described with reference to the flowchart of FIG.

Step S111: Preheating is performed for a time suitable for the outside air temperature based on the temperature detected by the temperature sensor 22 and the preheating table T1.

Step S112: The light is turned on based on the dimming rate (0% / 35% / 50%) based on the step dimming signal, the temperature detected value by the temperature sensor 22, the temperature and illuminance characteristic table T2, and the inverter output counter table T5. .

In this operation mode M11, in the summer /
Appropriate preheating can always be performed according to the season (temperature) such as winter. Further, appropriate dimming lighting control in consideration of the temperature can be performed.

<Operation mode M12> This operation mode M1
2, the peripheral device such as the temperature sensor 22, the human sensor 28 and the illuminance sensor 29, the SCI communication unit 33, and the reset switch 25 are used, and the preheating table T1, the temperature and illuminance characteristic table T2, the luminous flux maintenance ratio table T3, and the illuminance With reference to the sensor table T4, an optimal value is selected from the inverter output counter table T5 and lighting control is performed. In addition, lighting control is performed by exchanging signals with a lighting control device (not shown), which is a host device. Operation mode M1
The specific processing contents of No. 2 will be described with reference to the flowchart of FIG.

Step S121: Based on the temperature detected by the temperature sensor 22 and the preheating table T1, preheating is performed for a time suitable for the outside air temperature.

Step S122: The initial value (100%) is applied as the control dimming rate.

Step S123: External message is sent to SC
It is determined whether or not it has been received by the I communication unit 33, and if not, the process proceeds to step S126.

When a message is received, it is determined whether the received content is the monitor control or the dimming control. If the message is the monitor control, the information (temperature,
The lighting control device is notified of the dimming rate, human detection, cumulative lighting time, illuminance, etc. (step S125), and step S12 is performed.
Proceed to 6. If the received content is dimming control, the dimming rate received this time is applied as the control dimming rate (step S12).
4), proceed to step S126.

Step S126: Initial extra illuminance is suppressed based on the control dimming rate (initial illuminance correction processing), and dimming lighting is performed in consideration of temperature and illuminance characteristics.

Step S127: After the lamp replacement, when the reset switch 25 is operated, the accumulated lighting time is reset (= 0) (step S128).
Proceed to step S129. If the reset switch 25 has not been operated, the process proceeds directly to step S129.

Step S129: It is determined whether it is time to replace the lamp based on the current cumulative lighting time. If the cumulative lighting time has not reached the lamp replacement time, the lamp replacement indicator lamp 30 is not turned on ( Step S131), the process proceeds to step S132 to record the cumulative lighting time, and then returns to step S123. When the lamp replacement time has come, the lamp replacement indicator light 30 is turned on (step S13).
0), after recording the accumulated lighting time (step S132), the process returns to step S123.

In this operation mode M12, in summer /
Appropriate preheating can always be performed according to the season (temperature) such as winter. In addition, since excessive initial illuminance is suppressed and appropriate dimming lighting is performed in consideration of temperature, energy saving can be achieved. Further, the lamp replacement indicator 30
, The user can easily grasp the lamp replacement time.

Further, it is possible to perform dimming lighting according to the dimming rate from the lighting control device, which is a higher-level device. Also,
Temperature sensor 22, human sensor 28, and illuminance sensor 29
The information obtained from the peripheral device such as the device can be returned to the lighting control device, so that appropriate lighting control corresponding to the actual environment can be performed.

In the above embodiment, a lighting control process such as the operation modes M01 to M11 described above may be executed based on information from a lighting control device as a host device. .

[0116]

As described above, according to the electronic ballast of the present invention, various types of lighting control functions can be easily performed by a single unit by simply selecting peripheral devices such as sensors and switches to be mounted. Can be realized. As a result, it is not necessary to prepare a model corresponding to each lighting control function, so that the cost of the product can be reduced. Also,
When the lighting control method is changed after the lighting fixture is installed, the lighting control method can be easily changed because it is only necessary to change the peripheral device to be mounted, and it is not necessary to replace the electronic ballast.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of the present invention.

FIG. 2 is an explanatory diagram of frequency control of an inverter by a one-chip microcomputer.

FIG. 3 is a diagram illustrating a pulse waveform output from a one-chip microcomputer to an inverter.

FIG. 4 is a diagram showing a relationship between an operation mode executed in the embodiment of the present invention and peripheral devices.

FIG. 5 is a diagram illustrating an example of a table set in a one-chip microcomputer.

FIG. 6 is a flowchart illustrating processing in an operation mode M01 executed in the embodiment of the present invention.

FIG. 7 is a flowchart showing processing contents of an operation mode M02 executed in the embodiment of the present invention.

FIG. 8 is a flowchart showing processing contents of an operation mode M03 executed in the embodiment of the present invention.

FIG. 9 is a flowchart showing processing contents of an operation mode M04 executed in the embodiment of the present invention.

FIG. 10 is a flowchart showing processing contents of an operation mode M05 executed in the embodiment of the present invention.

FIG. 11 is a flowchart showing processing contents of an operation mode M06 executed in the embodiment of the present invention.

FIG. 12 is a flowchart showing processing contents of an operation mode M07 executed in the embodiment of the present invention.

FIG. 13 is a flowchart showing processing contents of an operation mode M08 executed in the embodiment of the present invention.

FIG. 14 is a flowchart showing processing contents of an operation mode M09 executed in the embodiment of the present invention.

FIG. 15 is a flowchart showing processing contents of an operation mode M10 executed in the embodiment of the present invention.

FIG. 16 is a flowchart illustrating processing in an operation mode M11 executed in the embodiment of the present invention.

FIG. 17 is a flowchart showing processing contents of an operation mode M12 executed in the embodiment of the present invention.

FIG. 18 is an explanatory diagram of an initial illuminance correction process.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 electronic ballast 11 noise filter 12 rectifier circuit 13 power factor correction circuit 14 D / D converter 15 inverter 16 lamp presence / absence detection circuit 17 lamp current detection circuit 18 one-chip microcomputer 19 interface 2 AC power supply 3 lamp 21 function switch 22 temperature sensor 23 lighting time setting switch 24 dimming setting switch 25 reset switch 26 human detection ON relay 27 dimming ON relay 28 human detection sensor 29 illuminance sensor 30 lamp replacement indicator light 31 step dimming I / F 32 continuous dimming I / F 33 SCI communication section T1 Preheating table T2 Temperature and illuminance characteristic table T3 Luminous flux maintenance rate table T4 Illuminance sensor table T5 Inverter output counter table

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kenichi Takazumi 36, Teradashinike, Joyo-shi, Kyoto F-term in Seiwa Electric Co., Ltd. (reference) 3K073 AA53 AA54 AA58 AA75 AA92 AB04 BA25 BA28 BA31 BA36 CF13 CF14 CG06 CG15 CG42 CJ05 CJ19 CJ22 CL10

Claims (6)

[Claims] An electronic ballast used for controlling lighting of a lamp, comprising: a rectifier circuit for rectifying an AC power supply; an inverter connected between the rectifier circuit and the lamp; The microcomputer includes a chip microcomputer, and the one-chip microcomputer can selectively execute a plurality of types of control processes based on any one or more of temperature detection information, human sensing information, illuminance information, or dimming rate information. An electronic ballast characterized by being configured as follows. 2. A plurality of types of control processing are performed in accordance with lamp preheating control, lighting / extinguishing control or lighting / dimming lighting control based on human detection, dimming lighting considering room brightness, and dimming rate information. 2. The electronic ballast according to claim 1, wherein the electronic ballast is dimmable lighting. 3. The one-chip microcomputer executes a process of recording an accumulated lamp lighting time, and performs one of a lamp initial illuminance correction process and a lamp replacement time displaying process based on the accumulated lighting time. 3. The electronic ballast according to claim 1, wherein the electronic ballast is configured to perform both. 4. An electronic ballast used for controlling lighting of a lamp, comprising: a rectifier circuit for rectifying an AC power supply, an inverter connected between the rectifier circuit and the lamp, and an inverter for controlling the inverter. Chip microcomputer, temperature detection information, human sensing information,
A receiving unit that receives illuminance information, dimming rate information, or cumulative lighting time information, wherein the one-chip microcomputer selectively performs a plurality of types of control processing based on one or more pieces of the received information; An electronic ballast that is configured to be executable. 5. A plurality of types of control processing are performed in accordance with lamp preheating control, lighting / extinguishing control or lighting / dimming lighting control by human detection, dimming lighting considering room brightness, and dimming rate information. 5. The electronic stability according to claim 4, wherein dimming lighting, initial illuminance correction processing of the lamp based on the cumulative lighting time, or processing for displaying a lamp replacement time based on the cumulative lighting time is executed. vessel. 6. The electronic stability according to claim 1, further comprising a function changeover switch for selecting one or a plurality of types of processes among the plurality of control processes. vessel.