TWI638582B - Light emitting diode system with lighting signals carried via power lines - Google Patents

Abstract

A light emitting diode system causes a light emitting signal to be carried on a power line to reduce the signal transmission line. The LED system includes a light emitting diode string, a switch unit and a control unit. The switch unit includes a power input end, a power output end and a controlled end. The power output end is electrically connected to the The LED light string is electrically connected to the switch unit. The control unit controls a conduction rate of the switching unit to change a voltage of the power output terminal to generate the illumination signal; and the LED light string receives the illumination signal to perform a illumination change.

Description

Light-emitting diode system with illuminating signal on power line

The present invention relates to a light emitting diode system, and more particularly to a light emitting diode system having a light emitting signal carried on a power line.

In the existing LED light string, since an additional illuminating signal generating circuit is required to generate the illuminating signal, the illuminating signal can be generated on the power line. Since the illuminating signal is generated, there is an additional cost problem, so how effective Reducing such costs has become a technical problem to be overcome.

In order to improve the above disadvantages of the prior art, it is an object of the present invention to provide a light emitting diode system having a luminescent signal carried on a power line.

In order to achieve the above object of the present invention, a light emitting diode system having a light emitting signal carried on a power line includes: a light emitting diode light string; a switching unit including a power input end and a power output end; And a controlled end, the power output end is electrically connected to the LED string; and a control unit is electrically connected to the switch unit. Where the control unit controls A turn-on rate of the switch unit is changed to change a voltage of the power output end to generate a light-emitting signal; the light-emitting diode light string receives the light-emitting signal to perform a light-emitting change.

The effect of the present invention is to easily generate a luminescence signal to drive the illuminating diode to perform illuminating changes; therefore, the cost of the illuminating signal generating circuit can be saved.

In order to further understand the technology, the means and the effect of the present invention in order to achieve the intended purpose, refer to the following detailed description of the invention and the accompanying drawings. The detailed description is to be understood as illustrative and not restrictive.

10‧‧‧Lighting diode system with illuminating signal on power line

20‧‧‧Lighting diode string

30‧‧‧AC power supply unit

102‧‧‧Switch unit

104‧‧‧Control unit

108‧‧‧Zina diode

110‧‧‧first capacitor

112‧‧‧second capacitor

116‧‧‧First resistance

118‧‧‧Input resistance

120‧‧‧Input capacitance

122‧‧‧AC to DC converter

124‧‧‧ third capacitor

126‧‧‧First connector

154‧‧‧Second connector

158‧‧‧Output resistance

202‧‧‧Lighting diode unit

10202‧‧‧Power input

10204‧‧‧Power output

10206‧‧‧ controlled end

10402‧‧‧Controlled Zener diode

10404‧‧‧Control terminal capacitor

10406‧‧‧First transistor

RR‧‧‧voltage resistor circuit

R1‧‧‧ first voltage divider resistor

R2‧‧‧Second voltage divider resistor

T1‧‧‧ duration

1 is a block diagram of a first embodiment of a light emitting diode system having a luminescent signal carried on a power line of the present invention.

2 is a block diagram of a second embodiment of a light emitting diode system having a luminescent signal carried on a power line of the present invention.

3 is a block diagram of a third embodiment of a light emitting diode system having a luminescent signal carried on a power line of the present invention.

4 is a block diagram of a fourth embodiment of a light emitting diode system having a luminescent signal carried on a power line of the present invention.

Figure 5 is a block diagram of a fifth embodiment of a light emitting diode system having a luminescent signal carried on a power line of the present invention.

Figure 6 is a waveform diagram of an embodiment of the illuminating signal of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The technical content and detailed description of the present invention are described below with reference to FIG. 1 , which is a block diagram of a first embodiment of a light-emitting diode system having a light-emitting signal carried on a power line according to the present invention; The illuminating diode system 10 (hereinafter referred to as the illuminating diode system 10) having the illuminating signal on the power line is applied to an AC power supply device 30; the illuminating diode system 10 includes a illuminating diode string 20, a switch unit 102, a control unit 104, a first resistor 116, a first capacitor 110, a Zener diode 108, a second capacitor 112, a third capacitor 124, an input resistor 118, a The input terminal capacitor 120, an AC to DC converter 122 and a first connector 126; the LED array 20 includes a plurality of LED units 202; the switch unit 102 includes a power input terminal 10202, a The power output terminal 10204 and a controlled terminal 10206. The above components are electrically connected to each other, and the present invention only needs the switch unit 102 and the control unit 104 to achieve the effects of the present invention.

The control unit 104 controls a conduction rate of the switch unit 102 to change the voltage of the power output terminal 10204 to generate a illuminating signal, and then the illuminating diode string 20 receives the illuminating signal for illuminating changes; the illuminating signal system For controlling the illumination mode of the LED string 20, the illumination signal may include a plurality of pulse waves, thereby driving the LED string 20 to achieve a more diverse illumination mode (eg, discoloration, fast blinking) , slow flashing, marquee effect, etc.). The light-emitting diode units 202 are two-foot point light control lamps. The switching unit 102 shown in FIG. 1 is a P-type metal oxide half field effect transistor (P-MOSFET). However, the present invention does not limit the type of the switching unit 102. The control unit 104 is electrically coupled to the controlled terminal 10206 and provides a control voltage to the controlled terminal 10206 to determine the conduction rate.

In the embodiment shown in FIG. 1, the electrical characteristics of the P-type MOS field effect transistor are utilized, and the control unit 104 applies an appropriate voltage to the gate of the P-type MOS field-effect transistor. Changing the conductivity of the P-type MOS field effect transistor to generate the luminescence signal; since the MOS field effect transistor has a characteristic of a varistor that is considered to have a linear resistance value change as the conduction rate changes. Therefore, using different conduction rates, the switching unit 102 can be made to have different resistance values, that is, the electric power is changed. The illuminating signal is generated by the voltage value of the source output terminal 10204; the illuminating signal includes a plurality of pulse waves; the pulse wave is formed by the switching unit 102 changing the conduction rate of the switching unit 102 each time; the illuminating signal embodiment Details are shown in Figure 6. The AC power supply device 30 described above transmits AC power to the above components for rectification, filtering, clamping voltage, and the like.

Please refer to FIG. 2 , which is a block diagram of a second embodiment of a light emitting diode system with a light-emitting signal carried on a power line according to the present invention; the component description shown in FIG. 2 is similar to FIG. 1 , and is a simple factor. No longer. Furthermore, the LED system 10 further includes a control terminal Zener diode 10402, a control terminal capacitor 10404, a first transistor 10406, an output resistor 158 and a second connector 154. The above components are electrically connected to each other. The switching unit 102 shown in FIG. 2 is an N-type metal oxide half field effect transistor (N-MOSFET), and its efficiency is the same as that of the P-type gold-oxygen half field effect transistor of FIG. 1, and therefore the description will not be repeated.

The control terminal Zener diode 10402 is used for supplying power to the control unit 104. The control unit of the related art uses the voltage drop of the resistor as the driving voltage. However, due to the high input voltage, the temperature of the resistor is very high and dangerous. . The control terminal Zener diode 10402 of the present invention replaces the general resistance to supply power to the control unit 104 to avoid the high temperature brought about by the general resistance. The present invention utilizes the cathode reverse connection characteristic of the control terminal Zener diode 10402 and utilizes a reverse collapse voltage, thereby reducing the driving voltage supplied to the control unit 104; that is, the present invention utilizes the control terminal Zener II. The stable and steady flow characteristics of the polar body 10402 reduce the problem of conventional overheating.

The AC to DC converter 122, the control terminal Zener diode 10402, the switch unit 102 and the LED string 20 are connected in series; the control unit 104, the control terminal Zener diode 10402 And the control terminal capacitor 10404 is connected in parallel; the power receiving mode of the control unit 104 of the present invention is connected in series with the LED string 20, and the voltage is dispersed at the control terminal Zener diode 10402 and the The LED string 20 is illuminated so there is no temperature problem. The second connector 154 is connected to the first connector 126 such that the LED system 10 can include more LED strings 20 .

Please refer to FIG. 3 , which is a block diagram of a third embodiment of a light emitting diode system with a light-emitting signal carried on a power line according to the present invention; the component description shown in FIG. 3 is similar to that of FIGS. 1 and 2 , and is a simple factor. This will not be repeated here. Furthermore, the LED system 10 further includes a control terminal Zener diode 10402, a control terminal capacitor 10404, a first transistor 10406, an output resistor 158 and a second connector 154. The above components are electrically connected to each other. The switching unit 102 shown in FIG. 3 is a P-type metal oxide half field effect transistor (P-MOSFET).

Please refer to FIG. 4 , which is a block diagram of a fourth embodiment of a light emitting diode system with a light-emitting signal carried on a power line according to the present invention; the component description shown in FIG. 4 is similar to that of FIGS. 1 to 3 , and is a simple factor. This will not be repeated here. Furthermore, the LED system 10 further includes a control terminal Zener diode 10402, a control terminal capacitor 10404, a first transistor 10406 and an output resistor 158. The above components are electrically connected to each other. The switching unit 102 shown in FIG. 4 is a P-type metal oxide half field effect transistor (P-MOSFET).

Please refer to FIG. 5 , which is a block diagram of a fifth embodiment of a light-emitting diode system with a light-emitting signal carried on a power line according to the present invention; the component description shown in FIG. 5 is similar to that of FIGS. 1 to 4 , and is a simple factor. This will not be repeated here. Furthermore, the LED system 10 further includes a voltage dividing resistor circuit RR. The voltage dividing resistor circuit RR includes a first voltage dividing resistor R1 and a second voltage dividing resistor R2. The components are electrically connected to each other. . The switching unit 102 shown in FIG. 5 is a P-type metal oxide half field effect transistor (P-MOSFET).

The control unit 104 uses the voltage dividing resistor circuit RR (for example, the internal circuit of the control unit 104 grounds the ground of the first voltage dividing resistor R1 and the second voltage dividing resistor R2 or not) to generate the control voltage. Determine the conductivity. In the circuit design, the resistance of the first voltage dividing resistor R1 and the second voltage dividing resistor R2 is determined according to the electrical characteristics of the switching unit 102 (for example, the P-type metal oxide half field effect transistor). For example, the present invention is not limited. The first voltage dividing resistor R1 is 6000 ohms, the second voltage dividing resistor R2 is 4000 ohms, and the conduction rate of the P-type metal oxide half field effect transistor is fifty percent.

Please refer to FIG. 1 and FIG. 6 simultaneously. FIG. 6 is a waveform diagram of an embodiment of the illuminating signal of the present invention. As shown in FIG. 6, in the normal state, the control unit 104 controls the switch unit 102 to be turned on in a fully conductive manner. At this time, the resistance value of the switch unit 102 is controlled to be the minimum, so that the voltage value of the power output terminal 10204 is 110V. When the control unit 104 reduces the conduction rate of the switch unit 102 according to a preset voltage value, such as 60V, the voltage value of the power output terminal 10204 is reduced to 60V, and then the control unit 104 will control the switch. The conduction rate of the unit 102 returns to the all-on mode, and the voltage is restored to 110V again to form a pulse wave; each time the control unit 104 changes and resumes controlling the conduction rate of the switching unit 102, a plurality of pulse waves can be generated. The illuminating signal is synthesized, wherein each pulse wave includes a duration t1. The LED string 20 receives the illuminating signal to perform illuminating changes using the pulse waves.

Further, when the LED string 20 receives the illuminating signal, each illuminating diode unit 202 can use the pulse wave corresponding to the preset voltage value to form a digital signal to interpret the illuminating signal. The meaning of the luminescence change, that is, the pulse wave is regarded as 1 of the digital signal, and the duration t1 is regarded as 0 of the digital signal, and is combined with the digital signal of 1 and 0 to drive the illuminating signal to drive The illuminating diode unit 202 can change the illuminating light. In another embodiment, the illuminating diode unit 202 can also use the number of times t1 to interpret the meaning represented by the illuminating signal to perform illuminating changes, that is, The pulse wave is regarded as 0 of the digital signal and the duration t1 is regarded as 1 of the digital signal. In this embodiment, the pulse waves are not required to comply with the preset voltage value.

The present invention determines the duration t1 described above, so that there is no problem with the prior art; the present invention can improve the ability to judge and interpret illuminating signals to improve accuracy.

The effect of the present invention is to easily generate a luminescence signal to drive the illuminating diode to perform illuminating changes; therefore, the cost of the illuminating signal generating circuit can be saved.

The invention may be embodied in various other modifications and changes without departing from the spirit and scope of the inventions. It is intended to fall within the scope of the appended claims.

Claims (12)

A light emitting diode system having a light emitting signal carried on a power line, comprising: a light emitting diode light string; a switching unit comprising a power input end, a power output end and a controlled end, the power output The terminal is electrically connected to the LED string; and a control unit is electrically connected to the switch unit, wherein the control unit controls a conduction ratio of the switch unit to change the voltage of the power output. Generating a illuminating signal; the illuminating diode string receives the illuminating signal for illuminating change; when the control unit reduces the conduction rate of the switching unit to change the voltage of the power output to generate the illuminating signal, the switch The conduction rate of the unit is not zero. An illuminating diode system having a illuminating signal carried on a power line as described in claim 1, wherein the control unit is electrically connected to the controlled terminal and provides a control voltage to the controlled terminal to determine the conduction rate. The light-emitting diode system having the illuminating signal and the illuminating signal is carried on the power line, as described in claim 1, further comprising: a control terminal Zener diode electrically connected to the control unit The control terminal Zener diode system is used for supplying power to the control unit; the control terminal Zener diode, the switch unit and the LED light string are connected in series. The light-emitting diode system having the illuminating signal and the illuminating signal is carried on the power line, as described in claim 1, further comprising: a voltage dividing resistor circuit electrically connected to the switching unit and the control unit, wherein The control unit utilizes the voltage dividing resistor circuit to generate a control voltage to determine the conduction rate. The light-emitting diode system having the illuminating signal and the illuminating signal is carried on the power line, wherein the voltage dividing resistor circuit comprises: a first voltage dividing resistor, the first voltage dividing resistor is electrically connected to the switch. a unit and the control unit; and a second voltage dividing resistor electrically connected to the switch unit, the control unit and the first voltage dividing resistor. An illuminating diode system having a illuminating signal carried on a power line according to claim 1, wherein the illuminating signal comprises a plurality of pulse waves corresponding to a predetermined voltage value, each pulse wave comprising a duration; The LED string receives the illuminating signal to perform illuminating changes using the pulse waves. An illuminating diode system having a illuminating signal carried on a power line according to claim 1, wherein the illuminating signal comprises a plurality of pulse waves, each pulse wave comprising a duration; the illuminating diode string The illuminating signal is received to utilize the duration for illuminating changes. The illuminating diode system having the illuminating signal and the illuminating signal carried on the power line, further comprising: a first resistor electrically connected to the control unit; a first capacitor, the first a capacitor is electrically connected to the control unit; a Zener diode, the Zener diode is electrically connected to the switch unit; a second capacitor is electrically connected to the control unit; a capacitor, the third capacitor is electrically connected to the control unit; an input resistor, the input resistor is electrically connected to the first resistor; and an input capacitor is electrically connected to the first resistor . The illuminating diode system having the illuminating signal on the power line, as described in claim 1, further comprising: a control terminal capacitor electrically connected to the control unit; a first transistor, the first transistor is electrically connected to the control unit; and an output resistor, the output resistor is electrically connected to the first transistor and the switch unit. The illuminating diode system having the illuminating signal on the power line, as described in claim 3, further comprising: an AC to DC converter electrically connected to the control unit, wherein the ac exchange The DC-DC converter, the control terminal Zener diode, the switching unit and the LED light string are connected in series. The illuminating diode system having the illuminating signal on the power line, as described in claim 1, further comprising: a first connector electrically connected to the control unit and the illuminating diode a light string; and a second connector electrically connected to the first connector. The illuminating diode system having the illuminating signal carried on the power line according to the first aspect of the patent application, wherein the switching unit is a P-type MOS field effect transistor or an N-type MOS field effect transistor.