JPS59166822A - Discomfort sense measuring device - Google Patents

Abstract

PURPOSE:To form a device for measuring a discomfort sense caused by a flicker from an optical output of a light source by providing a power source period measuring part for measuring the period of a power source by connecting a light source to a lighting power source, and a control part for holding an output signal of a photodetecting part for catching a variation of an optical output of a light source, at every specified time interval. CONSTITUTION:A variation of an optical output of a light source 12 which becomes a measuring object in the time of one period of an AC power source 11 is caught by the first photodetecting part 13. An output signal of the first photodetecting part 13 is inputted to a control part 14, and this input signal is held at every specified time interval. The time interval for holding the input signal of the control part 14 is <=1.7msec, and is capable of sampling by dividing one period of the power source into ten or more. An output signal of the control part 14 is inputted to an A/D converting part 15 and converted to a digital signal. In an operating part 16, the digital signal from the first A/D converting part is inputted by the time of one period of the power source derived by a power source period measuring part 10. The operating part 16 calculates an index for showing a variation of an optical output in the time of one period of the electric power source basing on these data.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a device for measuring the discomfort caused by flicker V (↓) of a light source for quality control in light source manufacturing or evaluation of lighting facilities. Structures of conventional examples and their problems In recent years, discharge lamps, such as high-intensity discharge lamps such as multi/logen lamps, have come to be widely used not only for outdoor lighting but also for outdoor lighting such as offices. This discharge lamp has a high energy conversion effect and is an effective lamp for saving energy in lighting. However, when this discharge lamp is turned on with an AC power source, an unpleasant flicker may be felt. The degree of pleasure Ω depends on (1) the shape of the light output waveform within the period of the power source that lights the light source, (2) the illuminance of the illuminated surface illuminated by the light source, and (the power source that lights the sunlight source). It is known that the discomfort due to flicker is measured by the light output waveform of the light source based on the relationship between these factors. He was highly desired from his standpoint.

Therefore, a device for measuring discomfort caused by flickering of a light source as shown in FIG. 1 can be considered. In Figure 1, Ryo is 71
This is a light source that is subject to a 1+1 constant. 1 is the first light receiving section, 2
Reference numeral 4 designates a control unit that holds input signals at equal time intervals, 3 a first A/D conversion unit, and 4 a calculation unit, which are configured to calculate an index representing a fluctuation in optical output. 8 is a second light receiving section, and 9 is a second A/D converting section, which are configured only to determine the illuminance of the illuminated surface.

Reference numeral 5 denotes a function converter that outputs a value representing discomfort caused by flickering based on an index representing fluctuations in light output and the illuminance of the illuminated surface, and reference numeral 6 represents a display unit displaying the value of discomfort caused by flickering.

However, with the above configuration, no consideration is given to the cycle of the power source that turns on the light source, which is one of the factors that affect the discomfort caused by the flicker mentioned above.
Disadvantages include the fact that the discomfort caused by flickering of light sources turned on by power sources with different power cycles cannot be measured, and the specifications of the control unit 2 and function conversion unit 5 must be changed in order to be used in areas with different power power cycles. had.

OBJECTS OF THE INVENTION In order to eliminate the above-mentioned drawbacks, it is an object of the present invention to provide a device that measures the discomfort caused by flickering from the light output of a light source, regardless of the cycle of the power source that turns on the light source.

Structure of the Invention The present invention provides an output signal of a power supply cycle measuring section that connects a light source to a turned-on power supply and measures the cycle of the power supply, and a light receiving section that detects fluctuations in the light output of the light source at a rate of 1-7m5elC or less. By providing a control unit that holds the power at intervals of
The discomfort caused by flickering can be measured from the light output of the light source.

DESCRIPTION OF THE EMBODIMENT FIG. 2 shows the configuration of an embodiment of the present invention. In FIG. 2, 12 is a light source to be measured, and 11 is an AC power source that lights the light source 12. Reference numeral 10 denotes a power supply cycle measurement unit that is connected to an AC power supply 11 and measures the cycle of the power supply. 13
14 is a first light receiving section, 14 is a control section, 15 is a first A/D conversion section, and 16 is a calculation section, which together with the power supply period measurement section 10 measure the light output within the time of the power supply cycle. This is a configuration for calculating an index representing fluctuations in .

19 is a second light receiving section, and 20 is a second A/D converting section, which are configured only to determine the illuminance of the illuminated surface. 1
Reference numeral 7 denotes a function conversion unit that outputs a signal corresponding to the discomfort caused by flickering based on the power supply cycle, an index representing the variation in optical output within the power supply cycle, and the illuminance of the illuminated surface. 1
Reference numeral 8 denotes a display unit that displays numerical values or characters corresponding to categories of subjective evaluation representing discomfort caused by flickering.

The operation of the apparatus of this embodiment will be explained below based on FIG. AC power supply 1) within -cycle time (20m5ec
The first light receiving unit 13 captures the variation in the optical output of the light source 12 to be measured at 17 m5ec). inputting the output signal of the first light receiving section 13 to the control section 14;
This input signal is held at regular time intervals. The time interval for holding the input signal of the control unit 14 is 1.7 m.
If it is 5 eC or less, sampling can be performed by dividing the power supply cycle into 10 or more. To calculate the index representing the variation of light output within the time of the power supply cycle, set the power supply cycle to 1.
It is already known that sampling with 0 or more divisions provides sufficient accuracy for measuring the discomfort caused by flickering. The output signal of the control section 14 is input to the first A/D conversion section 15 and converted into a digital signal. The arithmetic unit 16 inputs the digital signal from the first A/D converter for only the time period of the power supply cycle determined by the power cycle measurement unit 1o. For example, if the time interval for holding the input signal of the control unit 14 is set to 1 m5ec, the power supply cycle is 2
20 data when 0 ms ec (5oHz power supply), 1 when power cycle is 17m5ec (eoHz power supply)
Seven pieces of data are input from the first A/D converter. Based on these data, the calculation unit 16 calculates an index representing the variation in optical output within the time period of the power supply. As this index, for example, a light output peak ratio is used. This light output peak ratio is determined by the two maximum values of light output (I, ,
I2), the quotient (I2/I+) of the larger value (k, ) and the smaller value (k, ) is taken. The second light receiving unit 19 captures the illuminance of the illuminated surface illuminated by the light source 12 to be measured. An output signal from one second light receiving section is input to a second A/D converting section 2Q and converted into a digital signal. The relational converter 17 converts the output signal of the power cycle measuring unit 10, the output signal of the calculation unit 16, and the second A/D converter 2.
This device inputs the output signal of o and outputs a signal corresponding to the discomfort caused by flickering based on the period of the power supply, the optical output peak ratio, and the illuminance of the illuminated surface. FIG. 4 shows some examples of functions that are input in advance to the function conversion section 17.

In FIG. 4, the horizontal axis is the optical output and the peak ratio, and the vertical axis is the measure of discomfort caused by flickering. As a scale of discomfort caused by flickering, 0 is ``I don't feel flickering,'' 1 is ``I feel a little flickering,'' and 2 is ``I feel flickering as a nuisance.''
3 corresponds to the subjective evaluation category, such as ``I feel uncomfortable with the flicker'' and 4 means ``The flicker is strong and I can't stand it.''

FIG. 4 shows the relationship between the light output peak ratio and the discomfort caused by flickering at an illuminance of 10001X on the illuminated surface.
Function 1 is for a power supply cycle of 17m5eC (60Hz power supply), and Function 2 is for a power supply cycle of 20m5ec (50H2 power supply). Since this function changes depending on the illuminance of the illuminated surface, the function converting section 17 has a range (10 to
101X), the relationship between the index representing the fluctuation of the optical output within the time of the power supply cycle for each power cycle and the discomfort caused by flickering is input in advance.

Although this embodiment has been described based on the optical output peak ratio as an index representing fluctuations in optical output within a power supply period, any index may be used as long as it corresponds to the discomfort caused by flickering. However, when changing the index, the calculation contents of the calculation section 16 and the function of the function conversion section 17 must be changed.

Effects of the Invention As described above, the present invention includes a power supply cycle measurement section that connects a light source to a turned-on power supply and measures the cycle of the power supply, and an output signal of a light receiving section that detects fluctuations in the light output of the light source. 1.7
By having a control unit that holds the hold at time intervals of m5eC or less, it is possible to measure the discomfort caused by flickering from the light output of the light source, regardless of the cycle of the power supply that turns on the light source, and it is possible to measure the discomfort caused by flickering from the light output of the light source. It has many applications such as quality control and evaluation of lighting facilities, and its practical effects are great.

It can also be used as an experimental device for examining the relationship between an index representing fluctuations in optical output and discomfort caused by flickering.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a conventional discomfort measuring device.
Fig. 2 is a block diagram of a discomfort measuring device according to an embodiment of the present invention, Fig. 3 is a characteristic diagram showing the definition of the optical output peak ratio for explanation of the device, and Fig. 4 shows the optical output peak ratio and flicker. It is a figure which shows an example of the relationship of the scale of discomfort by. 1o...Power cycle measuring section, 11...Power supply, 12...Measurement target light source, 13...
First light receiving section, 14... Control section, 15...
...First A/D conversion section, 16... Arithmetic section, 1
7...Function conversion section, 18...Display section, 19
...Second light receiving section, 2o...Second A
/D conversion section. Name of agent Patent attorney Toshio Nakao and 1 other person Mr. Commissioner of the Japan Patent Office 1 Display of the case Patent Application No. 40874 of 1982 2 Name of the invention Discomfort measuring device 3 Person who straightens his sleeves Month 1 Relationship with the case η゛￥ Allowance
Director 1 Appointment Location 10 Oaza Kadoma, Kadoma City, Osaka Prefecture
06 Address Name (582) Matsushita Electric Industrial Co., Ltd. 1
．． ．． Name: Toshihiko Yamashita 4 Agent Address: 6, Matsushita Electric Industrial Co., Ltd., 3A1006 Oaza, Kozuemonkyo City, Osaka, Japan Contents of amendment (2) The scope of claims on page 1 of the specification should be attached to the appendix. Please correct it first. 2. Scope of Claims A power supply cycle measurement unit that measures the cycle of the power supply by connecting a light source to a power supply that is lit, and a first light receiving unit that detects fluctuations in the light output of the light source that is lit by the power supply. a second light receiving unit for determining the illuminance of the illuminated surface by the light source;
a control section that holds the output signal of the first light receiving section at time intervals of 1.7 m5ec or less; and a first A/D conversion section that inputs the output signal of the control section and converts it into a digital signal. , an arithmetic unit that inputs the output signal of the power cycle measurement unit and the output signal of the first A/D conversion unit and calculates an index representing a variation in optical output per power cycle; a second A/D converter that inputs the output signal of the light receiving section and converts it into a digital signal; an output signal of the power cycle measuring section; an output signal of the arithmetic section; and an output signal of the second A/D converter. a function converter that inputs and outputs an index representing discomfort caused by flickering; and a constant device that displays a numerical value or a character corresponding to the output signal of the function converter.

Claims (1)

[Claims] a power supply-period measuring section that connects the light source to a power source that is turned on and measures the period of the power source; a first light receiving section that detects fluctuations in the light output of the light source that is turned on by the power source; and the light source. a second light-receiving section for determining the illuminance of the illuminated surface, a control section for holding the output signal of the first light-receiving section at time intervals of 1.7m580 or less, and an output signal of this control section inputted. The first A/・ converts into a digital signal.
a D converter, an output signal of the power cycle measuring section and the first
an arithmetic unit that inputs the output signal of the A/D converter and calculates an index representing a fluctuation in optical output per power cycle; and an arithmetic unit that inputs the output signal of the second light receiving unit and converts it into a digital signal. A second A/D converter inputs the output signal of the power cycle measuring section, the output signal of the calculation section, and the output signal of the second A/D converter and outputs an index representing the discomfort caused by flickering. What is claimed is: 1. A discomfort measuring device comprising: a function converting section for converting the function; and a display section for displaying numerical values or characters corresponding to the output signal of the function converting section.