JPS58119199A - Device for firing discharge lamp - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The present invention is a discharge lamp lighting device VclIl which transmits a rectangular wave voltage and uses this as an input voltage. This relates to a method for individually controlling power.

In order to meet the power saving needs of today's gIWIIi, discharge lamp lighting devices have been added with functions such as 111il light 9 blinks, and in recent years, integrated lighting control has been developed in order to pursue comfort based on luxury products. In response to the advanced zero power saving needs, research is being conducted in the field of power control such as dimming and dimming, as well as in the field of lighting methods that maximize the luminous efficiency of the rung, and the so-called 30 to 40 KHc.
The high-frequency lighting method, which uses high-frequency waves to light the lights, has been actively developed because it increases the luminous efficiency of 2-channel lights compared to commercial low-frequency waves. In addition, in response to comfort, efforts have been made in the field of controlling each lighting load using a central control panel, and with recent rapid advances in microcomputers, multiple loads can be memorized as patterns, and even more time-efficient. However, the response to these two needs has been semi-independent and semi-independent of each other. We have developed a lighting system that combines these measures, namely power saving 1. It is the best lighting device that meets the basic needs of comfort.
Regarding 〇 and -〇, among the current high-frequency lighting methods, in order to maximize lamp luminous efficiency, the high-frequency amplitude is kept constant and the fixed level high-frequency lighting method is approved. This is because there is currently no constant level high frequency lighting method.In order to use a constant level high frequency lighting method, the input voltage to the lighting circuit must be completely smoothed and the direct voltage at the level of bare feet must be 6 volts, making this possible. power factor on.

This is because there are obstacles such as input distortion, and the lighting circuit is still unfinished.Therefore, it is still a step away from meeting the current collective control and power saving needs for the lighting system. A must for batch control! Various methods of signal transmission between the control unit and the lighting circuit as a terminal have been devised, 5j! Signal lW'f: Typical examples include multiplex transmission using power cables and other than power stages, or power line transport methods that transport signals on power lines. This is a transmission method that is easy to install and saves on materials because the electric light line can be used as a signal line without having to use it. In this method, a high frequency voltage as a signal is fully superimposed on the sine wave power supply voltage for m, but the lighting circuit as a terminal is not equipped with a control function to receive the signal and control the output. In addition to the lighting circuit, it is necessary to interpose an AM terminal between the collective control unit and the lighting circuit, and the function-enhancing standard K is suitable, but it is inevitable that it is a waste of money.The disadvantage is that it impedes workability. It had

The unexploded aA was developed to eliminate the above-mentioned drawbacks, and instead of transmitting power on the conventional commercial sine wave voltage to the power line, it transmits square wave voltage, and the lighting circuit as the terminal on the power receiving side has a basic By having a rectifier circuit that performs full-wave rectification and a high-frequency conversion circuit, it is possible to light with a constant level of high-frequency voltage.
Moreover, the power transmission section has a control function that can control the period of each cycle of the rectangular wave voltage, the lighting circuit of the power receiving terminal i detects the period of each cycle, and the output is controlled according to the length of the period. The control function that can be used is to turn on each light (b).
The circuit enables the lamp to emit light with the highest efficiency for high-frequency lighting, and also allows each lighting circuit to transmit a rectangular wave voltage.
To provide a lighting system that can achieve the basic performance required of a single lighting system, achieve power saving to the utmost limit, and can optimally realize integrated control to achieve further comfort by enabling collective control in the E section. In other words, the present invention includes a rectangular wave voltage generating power source that can control the periodicity of each cycle of the rectangular wave voltage, and transmits the rectangular wave voltage from this power source to the lamp, and the lighting circuit side that receives the power. A control circuit that detects the period of the rectangular wave, searches for a phase in which a rectangular wave corresponding to the lighting circuit exists from the rectangular wave phase having a reference period t, and controls the output of the lighting circuit according to the rectangular wave period at that time, and Full wave input rectangular wave voltage! The above purpose was achieved by performing high frequency conversion on the mold.

Hereinafter, the invention will be described in detail with reference to the drawings showing the basic configuration and embodiments.

The basic configuration is shown in FIG. 1. 01 is a predetermined rectangular wave power source that generates a rectangular wave voltage, and 2 is a reference phase on the rectangular wave cycle of the rectangular wave voltage 5I11. A rectangular wave period control section 3 capable of controlling the period inputs the output rectangular wave voltage of the rectangular wave power source 1, counts the reference phase EF, extracts its own unique rectangular wave waveform, detects the entire period of the waveform, and calculates its own rectangular waveform. A rectangular wave voltage control section 4 which controls the output voltage according to the length of the cycle is a high frequency lighting device which inputs the output voltage of the rectangular wave voltage control s3, converts it into a high frequency, and lights the lamp with the high frequency output. It should be noted that the rectangular wave voltage control section 3 and the high frequency lighting device 4 form a pair, and a plurality of them can be connected to the power line 5.The rectangular wave generating power source 1 is constructed as shown in FIG. Yes, switching transistor 7
．． 8, 9, 10 [7 and lO are on or off at the same time, 8 and 9 are on or off at the same time 11't and 9, and the operation of 7 and 10 and 8
The operation of and 9 is a toggle operation.01 constant, M current power supply 6 is smoothed with little pull, and 7 is a DC voltage. When the transistors 7, 8, 9, and 10 perform the following operation as shown in FIG. source 6
The output voltage Vo of this rectangular wave generating power source 1 is 2.
The period of ut is determined by the rectangular wave period control W62, and a configuration example of the rectangular wave period control 1!112 is shown in FIG. In the figure, the address of memo 'J-11 is .

Aa, As, As ・=-AsKri 1st
A digital value N@-Ns, which corresponds to the output of each lighting circuit, is stored in advance in correspondence with the terminal side light circuit number. However, the crow at address Ae is for generating a reference cycle, and does not correspond to the terminal side lighting (c) signal Ku. The CPU 12 is a timer clock generation circuit 18
From the timer mm input, add 0% CP
U12 reads the N value at address A6, compares it with the timer clock number, and outputs the output bit line 19? until they match. @H”.At this time, output bit data @H’
″ are isolator circuits 13 , 14 , 15 , 16
and the output terminal voltage vab, hfh-ved
-11ef a FIG. 3 Obtain the waveforms of t, ~t, shown in FIG. Therefore, when the number of clocks for the timer matches N, the output bit line east is set to 1L", and the number of clocks for the timer is calculated again until it matches No. At this time, va
The waveforms below b are from t1 to t1 shown in Fig. 3←). Therefore, when the timer clock numbers match, the output bit @1
9'i Set it to "H#" again, and this time store data N at address A1.
1', perform the same operation as when reading Net-, perform the same processing up to the data at address A%, and then repeat calculations as if performing team processing at address A% again. . Therefore, by such an operation, a rectangular wave voltage as shown in FIG. 2 can be obtained on the power line 5. FIG. The operation of receiving the rectangular wave voltage of the lamp II5 and detecting the output power control signal of the high frequency lighting circuit 4 at 9 o'clock in the control s3 will be described. Further, waveforms of various parts are shown in FIG. When the rectangular wave voltage obtained from the power line 5 is half-wave rectified by adding a diode, the waveform shown in Fig. 6 is obtained, and therefore the transistor 2
By the switch operation of 1, an inverted @ waveform of 2 is obtained at the collector. @ At the negative edge of the waveform, the timer operates and the reference cycle (number of clocks in Figure 2 2X N (
A period '''H that is slightly larger than a half period of the period corresponding to 1)
``The level is maintained. Therefore, the output becomes the ■ waveform, and when the half period of the timer 29's timer 1 hour T..., c, ? manual rectangular wave becomes small, the trigger pulse shown in [phase] is generated. From then on, it is detected that an output power control signal to the high frequency lighting circuit 4 is included.This trigger pulse is used to preset or reset a subtraction counter and an addition counter, which will be described later. Considering the terminal lighting circuit of φ2, when the control signal of Na2 is in the 211th cycle counting from the reference cycle, the subtraction counter 23 is at the @H” level of ■, and the initial value of the counter is Preset to 2#. onwards,
In order to count the cycles of the rectangular wave input voltage, when counting with a preset type subtraction counter that operates with @t positive edge, at time t1, the content of the subtraction counter tacho becomes zero, and at this moment, the trigger pulse is like θ. is output from the T terminal, and the flipflop is 24t-@H”
Setting the OC to 1H allows the clock pulse to be input to the addition counter, and as shown in
The clock pulses are added by the addition counter 2 during the half cycle of *. After the counting butterfly time of the addition counter, the input of clock pulses is prohibited and the output stops, and the output is latched into the latch n by the trigger pulse output from the timer immediately after 9, and starts the next reference cycle. Therefore, it is possible to control the input voltage to the lighting circuit 4 using this stored digital value, and the lighting circuit becomes a full-wave rectifier circuit as shown in Fig. 7. 33. If the output winding i1 of the voltage control circuit U2 oscillation transformer is of a leakage type and is composed of a push-pull inverter and a lamp, if the voltage control circuit 34 is controlled by a chopper, the latch 27 is The duty of the switch can be set using the digital value, and the power supplied to the lamp holder can be controlled.

In addition, since the present invention can supply a rectangular wave to the lighting circuit as a terminal, it is also possible to directly light the lamp with a rectangular wave in terms of luminous efficiency.
There is no need to limit the frequency lighting circuit.

In particular, for lamps such as high-intensity discharge lamps that have a resonance phenomenon at high frequencies, low-frequency rectangular wave lighting is more advantageous in terms of noise and safety than high-frequency lighting. The input surface current voltage to the square wave conversion circuit is:

In particular, the voltage does not have to be completely smoothed, and may be a full-wave rectified three-phase voltage. In addition, in the embodiment described above, lighting times W& are mentioned as terminal loads that receive square waves, but it does not matter the type of load as long as it is a load that is required for DC, therefore, speed control of an AC motor. As described above, according to the present invention, the lighting circuit can be controlled by using two power lines, and by using other signals such as I! This system has the effect of providing an all-in-one lighting control system that is very easy to install because it does not require any power lines.
The square wave is transmitted by the book, the lighting circuit is a square wave lighting,
Alternatively, since high-frequency lighting with a constant output level is possible, the luminous efficiency of the lamp is maximized, and it is possible to obtain a large power saving effect that is not available with other control systems.In this regard, high-intensity discharge lamps As a lighting device for discharge lamps with a resonance phenomenon, it is effective not only in controllability and power saving, but also in safety, and is expected to be used as a lighting system in the future.

[Brief explanation of drawings]

FIG. 1 is a professional diagram showing the overall configuration of the present invention. Figure 2 is an explanatory diagram of its operation, and Figure 3 (a) is the square wave power supply 1.
Fig. 4 shows an example of the structure of the rectangular wave period control section 2, Fig. 5 shows an example of the structure of the rectangular wave voltage control section s3, and Fig. 6 shows its operation. The operation explanatory diagram, FIG. 7, shows an example of the configuration of the high frequency lighting device 4.
・Square wave voltage control section, 4...High frequency lighting device Patent applicant Matsushita Electric Works Co., Ltd.

Claims (1)

[Claims] DC electrophoresis; A lighting device that receives wave voltage through a 1m2 main pipe of a light lamp and lights the lamp tube, inputs the rectangular wave, detects the periodic sound of each cycle, and sets a cycle with a reference period t as 7 reference cycles, counting from the reference cycle. A discharge lamp lighting device characterized by comprising a control device that detects a cycle corresponding to the lighting device and controls the lighting device*sound according to the period of the cycle.