TWI400001B - Single-wire signal control system and method thereof - Google Patents

Description

Single-wire signal control system and method thereof

The present invention relates to a signal control system and method thereof, and more particularly to a single-wire signal control system and method thereof.

The lighting fixtures or ceiling fans usually installed on the ceiling are controlled to open or close through the switches on the wall. For the wiring control circuit, please refer to the first figure, which is a schematic diagram of the wiring structure of the conventional load control architecture. As shown in the first figure, the switch SW is mounted on the wall at a height convenient for operation to control the switch of the load unit 1; and the load unit 1 is mounted on the ceiling. The switch SW and the load unit 1 are connected to each other by two electric wires L1 and L2 embedded in a pipe inside the wall, wherein the electric wire L1 is connected to the live line L of the alternating current power source to obtain electric power, and the electric wire L2 is connected to the load unit 1, The other end of the load unit 1 is connected to the ground line N of the AC power source. When the user turns on the switch SW, the loop of the load unit 1 is turned on, and thus the power is received and started.

However, the conventional architecture can only open or close the function of the load unit 1. If it is desired to further adjust the state of the load unit 1, such as dimming/darking the luminaire, it is necessary to increase the control line from the switch SW to the fire line L. And the ground line N, to achieve the mechanism of dimming. Since indoor wiring is mostly embedded in the wall, if additional wiring is added, it will face the problem of damaging the decoration and increasing the wiring complexity.

In addition to the above-mentioned way of adding wiring to dim, an addressable digital illumination interface (DALI, Digital Addressable Lighting) can also be used. Interface dimmable electronic ballast or TRIAC dimmer to control the dimming digital signal, however, it has a high cost.

In view of this, the present invention proposes to control the state of the load unit by detecting the waveform changes of the positive and negative half waves of the AC voltage under the conventional load control circuit, and can adjust the condition without increasing the control line. The mechanism by which the load unit is in use.

It is an object of the present invention to provide a single-wire signal control system and method thereof that can adjust the state of use of a load cell.

The invention discloses a single-wire signal control system for adjusting the usage state of a load unit. The single-wire signal control system includes a phase controller, a positive half-wave detection circuit, a negative half-wave detection circuit, a single-chip controller, and a converter. The phase controller is used to adjust the waveform and size of an AC voltage, wherein the AC voltage is a sine wave signal composed of a positive half wave and a negative half wave; the positive half wave detection circuit is coupled to the phase controller, To detect the width of the positive half wave of the AC voltage; the negative half wave detection circuit is coupled to the phase controller for detecting the width of the negative half wave of the AC voltage; the single chip controller is coupled to the positive half The wave detecting circuit and the negative half wave detecting circuit are configured to output a PWM signal according to the width of the positive half wave and the width of the negative half wave. Thereby, the load unit changes its use state according to the PWM signal. In addition, the load unit can directly send the digital signal of the adjustment load unit to change the usage state according to the width of the positive half wave and the negative half wave detected by the single chip controller.

In an embodiment of the invention, the single-wire signal control system further includes a low-pass filter for converting the PWM waveform of an input voltage Vin into a constant The output voltage Vdc is output to the load cell for operation.

In an embodiment of the invention, the phase controller includes a first switching element and a thyristor element (TRIAC). The first switching element is coupled to the alternating current voltage; the thyristor element is coupled to the alternating voltage and the first switching element; wherein, if the first switching element is turned off by an adjustment signal, the thyristor element is turned on to change the alternating current The width of the positive half or negative half of the voltage.

In an embodiment of the invention, the phase controller includes a second switching element, a third switching element, a second diode, a third diode, and a thyristor. The second switching element is coupled to the alternating current voltage; the third switching element is coupled to the second switching element; the second two-pole system is coupled to the second switching element; and the third two-pole system is coupled to the second diode The thyristor component is coupled to the AC voltage and the second switching component and the third switching component; wherein, if the second switching component is turned off by an up-regulation signal, the thyristor component is turned on to change the negative half-wave of the AC voltage Width; if the third switching element is turned off by a five-tone signal control, the thyristor element is turned on to change the width of the positive half wave of the alternating voltage.

The invention also discloses a single-wire signal control method for adjusting the usage state of a load unit. The control method is firstly, adjusting a waveform and a magnitude of an alternating voltage, wherein the alternating voltage is a sine wave signal composed of a positive half wave and a negative half wave; and then detecting a positive half wave and a negative half wave Width; finally, the usage state of the load unit is adjusted according to the result of the above detection.

According to the foregoing technical solution, the present invention utilizes the waveform change of the positive and negative half waves of the AC voltage to detect the voltage, and then supplies the adjusted voltage to the load unit as a control signal or directly sends the digital signal of the adjustment load unit. It can adjust the usage status of the load unit.

The above summary and the following detailed description and drawings are intended to enable The manner, means and efficacy of the present invention for achieving the intended purpose are further described. Other objects and advantages of the present invention will be described in the following description and drawings. The accompanying drawings are for the purpose of illustration and description only

The single-wire signal control system and method thereof according to the present invention are adjusted according to the waveform change of the detected AC voltage, thereby providing the adjusted voltage to the load unit to operate, so that the control circuit is not additionally configured. In this case, the use status of the load unit can be adjusted.

The main technical feature of the present invention is to add a phase control circuit to generate different positive and negative half-waves of the alternating current in the control circuit architecture of the original load unit. The following only proposes the necessary system architecture and its actions. Those skilled in the art are aware that, except for the components mentioned below, the control circuit of the load unit and its wiring manner naturally include other necessary components, and therefore should not be limited to those disclosed in the embodiment.

First, please refer to the second figure, which is a wiring diagram of a specific embodiment of the load control architecture disclosed in the present invention. As shown in the second figure, the adjustment control unit 3 is mounted at a height on the wall for easy operation, for controlling the use state of the load unit 2; and the load unit 2 is mounted on the ceiling. The adjustment control unit 3 and the load unit 2 are connected to each other by two electric wires L1, L2 embedded in a pipe inside the wall, wherein the electric wire L1 is connected to the live line L of the alternating current power source to obtain electric power.

The load unit 2 is a lamp or a fan; and the aspect of the adjustment control unit 3 is referred to the third figure. Adjust the control sheet as shown in the third figure In the element 3, a switch button 31, an up button 33 and a down button 35 are provided to provide a user to press the button to control the brightness or the rotational speed of the load unit 2. In another embodiment of the present invention, only one adjustment button (not shown) may be provided in the adjustment control unit 3, and the brightness or the rotation speed of the load unit 2 is linearly adjusted by continuously pressing the adjustment button. Moreover, in addition to using a button to adjust the brightness or the rotational speed of the load unit, it may be designed to be adjusted in other ways, and the implementation manner thereof should not be limited to the disclosure of the embodiment.

The load control architecture mainly includes a single-wire signal control system 4 for controlling the brightness of the load unit 2 (hereinafter, for example, a luminaire), and one end of the single-wire signal control system 4 is connected to the ground line N of the AC power source. The other end is connected to the electric wire L2 and the load unit 2, and the brightness of the load unit 2 is controlled according to the adjustment signal transmitted from the adjustment control unit 3 on the electric wire L2.

In order to better understand the operation of the internal circuit, the following describes the control situation in which a single adjustment button is provided and a double button such as the up button 33 and the down button 35 are provided. Please refer to FIG. 4A, which is a circuit diagram of a specific embodiment of the single-wire signal control system disclosed in the present invention. Please refer to the second and third figures for the related system architecture. As shown in FIG. 4A, the single-wire signal control system 4 is coupled to the load unit 2, and includes a phase controller 41, a positive half-wave detecting circuit 42, a single-chip controller 44, and a low-pass filter 46. And a buzzer 47.

In a single button embodiment, the phase controller 41 includes a first switching element SW1, a thyristor element TRIAC, a variable resistor Vr, and a capacitor C. The first switching element SW1 is coupled to the AC voltage Vac transmitted by the ground line N. The user controls the first switching element SW1 to be turned on or not by pressing an adjustment button, wherein the AC voltage Vac is composed of a plurality of Positive half wave and The plurality of negative half waves constitute one sinusoidal signal. When the first switching element SW1 is turned on, the positive and negative half waves of the alternating voltage Vac are equal width. The thyristor element TRIAC is coupled to the AC voltage Vac and the first switching element SW1, and the variable resistor Vr is used to control the magnitude of the AC voltage Vac. When the first switching element SW1 is turned off by the adjustment signal control, the current is controlled by the conduction gate fluid element TRIAC to change the width of the positive half wave or the negative half wave of the alternating voltage Vac.

Please also refer to the fifth A-C diagram, which is a waveform diagram of one embodiment of the AC voltage Vac disclosed in the present invention. As shown in Figure 5A, when the normal adjustment button is not pressed, the positive and negative half waves of the AC voltage Vac are the same width; when the adjustment signal is generated and the TRIAC fluid element is turned on, the positive half or negative half of the AC voltage Vac The wave will form a unequal width as shown in the fifth B and C diagrams. In the fifth diagram B, when the input up-conversion signal is indicated, the positive half-wave will maintain the sine wave, and the negative half-wave will have the truncated portion; In the fifth C picture, when the input down signal is input, the negative half wave will maintain the sine wave, and the positive half wave will have the cut off part.

The positive half-wave detecting circuit 42 is coupled to the phase controller 41 for detecting the width of the positive half wave (or negative half wave) of the AC voltage Vac. The single-chip controller 44 is coupled to the positive half-wave detecting circuit 42 for outputting a PWM signal S1 according to the width of the positive half-wave, wherein the PWM signal S1 changes the width of the waveform with the positive half-wave. The converter 45 is coupled to the single-chip controller 44, which receives and controls the PWM signal S1, and converts an input voltage Vin into a DC voltage Vdc, wherein if the width of the positive half-wave is greater than the width of the negative half-wave, The generated DC voltage Vdc is higher; otherwise, the generated DC voltage Vdc is lower. The low-pass filter 46 is coupled between the single-chip controller 44 and the load unit 2 for converting a PWM waveform representing an input voltage Vin into a DC voltage Vdc and outputting it to the load unit 2 for operation, wherein the DC voltage Vdc The level is based on the waveform of the PWM signal S1 The on-period varies in size, and the higher the period of the PWM waveform, the higher the voltage of the DC voltage Vdc, and vice versa, whereby the load unit 2 is brightened or dimmed according to the magnitude of the DC voltage Vdc.

The buzzer 47 is coupled to the single chip controller 44 for issuing an audible warning when the state of the load unit 2 is adjusted to the limit, such as maximum/minimum brightness or fastest/slowest wind speed.

In a specific embodiment of the present invention, the single-wire signal control system 4 further includes a rectifier (not shown) coupled to the phase controller 41 for rectifying the AC voltage Vac to generate an input voltage Vin. The input voltage Vin may also be provided by an external voltage source, and should not be limited to those disclosed in this embodiment.

In addition to adjusting the magnitude of the DC voltage Vdc in accordance with the PWM signal S1, the single-wire signal control system 4 can also be designed as shown in FIG. 4B. Compared to the fourth A-picture, the present embodiment is based on the single-chip controller 44. The width and magnitude of the waveform determined by the positive half-wave detecting circuit 42 outputs an adjustment signal S2, and the operating voltage value of the load unit 2 is changed by the adjustment signal S2 to perform brightness adjustment or dimming control.

For the control of the double button such as the up button 33 and the down button 35, please refer to the fourth C diagram, which is a circuit diagram of another embodiment of the single-wire signal control system disclosed in the present invention. As shown in the fourth C diagram, the circuit architecture is a variant of the fourth A diagram, and the design of the phase controller 41 is slightly different. The phase controller 41 in this embodiment includes a second switching element SW2, a third switching element SW3, a second diode D2, a third diode D3, a thyristor element TRIAC, and a variable resistor. Vr and a capacitor C. The second switching element SW2 is coupled to the AC voltage Vac; the third switching element SW3 is connected in series to the second switching element SW2; the second diode D2 is coupled The second switching element SW2 is connected to the second diode D2 in series. The thyristor element TRIAC is coupled to the AC voltage Vac and the second switching element SW2 and the third switching element SW3, and the variable resistor Vr is used to control the magnitude of the AC voltage Vac. When the up button 33 and the down button 35 are not pressed, the second switch element SW2 and the third switch element SW3 are all turned on, so that the positive and negative half waves of the AC voltage Vac are equal width. When the up-key button 33 is pressed and the second switching element SW2 is controlled to be turned off, current will flow through the turned-on third diode D3 and the thyristor element TRIAC, thereby cutting off the negative half-wave of the partial AC voltage Vac; When the down button 35 is pressed and the third switching element SW3 is controlled to be turned off, current flows through the turned-on second diode D2 and the thyristor element TRIAC, thereby cutting off the positive half-wave of the partial AC voltage Vac.

The positive half-wave detecting circuit 42 and the negative half-wave detecting circuit 43 are respectively configured to detect the width of the positive and negative half waves of the AC voltage Vac; the single-chip controller 44 is configured to use the width of the positive half wave and the negative half wave. The width outputs a PWM signal S1, wherein the PWM signal S1 changes the width of the waveform with positive and negative half waves. The low-pass filter 46 is configured to convert the PWM waveform representing an input voltage Vin into a DC voltage Vdc and output it to the load unit 2 for operation. The level of the DC voltage Vdc changes according to the ON period of the waveform of the PWM signal S1. The larger the period of the PWM waveform, the higher the voltage of the DC voltage Vdc, and vice versa, whereby the load unit 2 is brightened or dimmed according to the magnitude of the DC voltage Vdc.

Similarly, under the double-key control, in addition to adjusting the magnitude of the DC voltage Vdc according to the PWM signal S1, the single-wire signal control system 4 can also be designed as shown in the fourth D-picture, compared to the fourth B-picture. For example, the single-chip controller 44 outputs an up-regulation signal S3 or a sub-signal S4 according to the width and size of the waveform determined by the positive half-wave detecting circuit 42 and the negative half-wave detecting circuit 43. The modulating number S3 controls the increase of the operating voltage value of the load unit 2, and the down-regulation signal S4 controls the lowering of the operating voltage value of the load unit 2 for the control of brightening or dimming.

Finally, please refer to the sixth figure, which is a flow chart of the steps of a specific embodiment of the single-wire signal control method disclosed in the present invention. Please refer to the third and fourth A~B diagrams for the related system architecture. As shown in the sixth figure, the single-line signal control method includes the following steps: First, the user issues a command to adjust the load unit 2 by pressing the up button 33 or the down button 35, thereby causing the phase controller 41 to The control AC voltage Vac adjusts the voltage waveform and the size according to the adjustment signal, thereby changing the widths of the positive and negative half waves of the AC voltage Vac (step S603); then, the positive and negative half-wave detecting circuits 42 and 43 respectively detect the AC The width of the positive and negative half waves of the voltage Vac (step S605); after that, the single-chip controller 44 determines whether the widths of the positive and negative half waves are the same (step S607); if so, it means that the adjustment button is not pressed, and thus Changing the state of the load unit 2; otherwise, performing an adjustment procedure, that is, determining whether the width of the positive half wave is greater than the width of the negative half wave (step S609); if the determination of step S609 is YES, indicating that the user is pressing the up key 33 To generate an up signal S3, the up signal S3 is sent to the load unit 2 (step S610) to boost the DC voltage Vdc to brighten the load unit 2 (step S611); otherwise, the user system is indicated. Pressing the down button 35 to generate the next signal S4, the down signal S4 is sent to the load unit 2 (step S612) to step down the DC voltage Vdc to dim the load unit 2 (step S613); and during the adjustment process, It is judged whether the load unit 2 has been adjusted to the brightest/darkest state (step S615); if so, the control buzzer 47 emits an audible prompt (step Step S617); otherwise, continue to receive the adjustment signal.

In this embodiment, the load unit 2 is taken as an example for the luminaire. If the fan is taken as an example, the adjustment state is the action of turning fast/slowing the wind speed, and the relevant details are the same as the above process, and thus the Be redundant.

By the above examples, when the single-wire signal control system and method thereof of the present invention are known, the phase controller is used to adjust the waveforms of the positive and negative half waves of the AC voltage, and by detecting the positive and negative half waves. To determine the boost or buck, and then provide the adjusted voltage to the load cell to control its state (shading or speed), so that no additional configuration control lines can be used to adjust the efficiency of the load cell.

However, the above description is only for the purpose of illustration and description of the embodiments of the present invention, and is not intended to limit the scope of the invention. Variations or modifications that may be readily conceived within the scope of the invention may be covered by the scope of the invention as defined in the following.

Conventional knowledge

1‧‧‧Load unit

L1, L2‧‧‧ wires

L‧‧‧FireWire

N‧‧‧ ground

SW‧‧ switch

this invention

2‧‧‧Load unit

L1, L2‧‧‧ wires

L‧‧‧FireWire

N‧‧‧ ground

3‧‧‧Adjustment control unit

31‧‧‧Switch button

33‧‧‧Up button

35‧‧‧Lower button

4‧‧‧Single-line signal control system

41‧‧‧ phase controller

SW1‧‧‧First switching element

TRIAC‧‧‧ thyristor components

Vr‧‧‧Variable resistor

C‧‧‧ capacitor

Vac‧‧‧AC voltage

S1‧‧‧PWM signal

Vin‧‧‧Input voltage

Vdc‧‧‧ DC voltage

42‧‧‧ positive half-wave detection circuit

43‧‧‧Negative half-wave detection circuit

44‧‧‧Single chip controller

46‧‧‧Low-pass filter

47‧‧‧ buzzer

SW2‧‧‧Second switching element

SW3‧‧‧ third switching element

D2‧‧‧ second diode

D3‧‧‧ third diode

S1‧‧‧PWM signal

S2‧‧‧ adjustment signal

S3‧‧‧Upgrade signal

S4‧‧‧down signal

S603~S617‧‧‧ each step process

The first diagram is a wiring diagram of a conventional load control architecture; the second diagram is a wiring diagram of a specific embodiment of the load control architecture disclosed in the present invention; the third diagram is the adjustment control unit disclosed in the present invention. A schematic diagram of a specific embodiment of the present invention; a fourth embodiment is a circuit architecture diagram of a specific embodiment of the single-wire signal control system disclosed in the present invention; and a fourth diagram B is a re-examination of the single-wire signal control system disclosed in the present invention. A circuit architecture diagram of a specific embodiment of the present invention; a fourth circuit diagram is a circuit diagram of another embodiment of the single-wire signal control system disclosed in the present invention; and a fourth diagram is a single-line signal control system disclosed by the present invention. A circuit diagram of another embodiment of the present invention; FIG. 5A is a waveform diagram of one embodiment of the alternating voltage disclosed in the present invention; and FIG. 5B is another specific embodiment of the alternating voltage disclosed in the present invention. The waveform diagram of the embodiment; the fifth C diagram is a waveform diagram of another embodiment of the AC voltage disclosed in the present invention; and the sixth diagram is a specific embodiment of the single-line signal control method disclosed in the present invention. Step flow chart.

2‧‧‧Load unit

4‧‧‧Single-line signal control system

41‧‧‧ phase controller

SW1‧‧‧First switching element

TRIAC‧‧‧ thyristor components

Vr‧‧‧Variable resistor

C‧‧‧ capacitor

Vac‧‧‧AC voltage

S1‧‧‧PWM signal

Vin‧‧‧Input voltage

Vdc‧‧‧ DC voltage

42‧‧‧ positive half-wave detection circuit

44‧‧‧Single chip controller

46‧‧‧Low-pass filter

47‧‧‧ buzzer

S1‧‧‧PWM signal

Claims (14)

A single-wire signal control system for adjusting a usage state of a load unit includes: a phase controller for adjusting an AC voltage, wherein the AC voltage is a plurality of positive voltages The half wave and the plurality of negative half waves form a sine wave signal; a positive half wave detecting circuit is coupled to the phase controller for detecting the width of the positive half wave of the alternating voltage; and a single The chip controller is coupled between the positive half wave detecting circuit and the load unit for outputting an adjustment signal according to the width of the positive half wave; wherein the load unit changes its use according to the adjustment signal status. The single-wire signal control system of claim 1, further comprising: a low-pass filter coupled between the single-chip controller and the load unit; wherein the single-chip controller is The width of the positive half wave outputs a PWM signal, and the low pass filter converts an input voltage into a DC voltage according to the PWM signal, and the load unit changes its use state according to the magnitude of the DC voltage. The single-wire signal control system of claim 1, further comprising: a negative half-wave detection circuit coupled to the phase controller for detecting the negative half-wave of the alternating voltage Width; wherein the single chip controller outputs the adjustment signal according to the width of the positive half wave and the width of the negative half wave. The single-wire signal control system as described in claim 2, further comprising: a negative half-wave detecting circuit coupled to the phase controller for detecting the negative half-wave of the alternating voltage Width; wherein the single chip controller outputs the PWM signal according to the width of the positive half wave and the width of the negative half wave. The single-wire signal control system of claim 1, further comprising a buzzer coupled to the single-chip controller for sounding to indicate the usage status of the load unit. The single-wire signal control system of claim 1, wherein the phase controller comprises: a first switching component coupled to the alternating voltage; and a thyristor component (TRIAC) coupled And the first switching element; wherein, if the first switching element is turned off by the adjustment signal, turning on the thyristor element to change the positive half wave or the negative half wave of the alternating voltage width. The single-wire signal control system of claim 3, wherein the phase controller comprises: a second switching component coupled to the alternating voltage; and a third switching component connected in series a second switching element coupled to the second switching element; a third diode connected in series to the second diode; and a thyristor coupled to the An alternating voltage and the second switching element and the third switching element; And if the second switching element is turned off by the adjustment signal, turning on the thyristor element to change a width of the negative half wave of the AC voltage; if the third switching element is controlled by the adjustment signal, disconnecting And turning on the thyristor element to change the width of the positive half wave of the alternating voltage. The single-wire signal control system of claim 2, wherein the input voltage is rectified by the alternating voltage, or is an external voltage source. The single-wire signal control system of claim 1, wherein the load unit is a light fixture, and a user inputs the adjustment signal to adjust the brightness of the light fixture. The single-wire signal control system of claim 1, wherein the load unit is a fan, and a user inputs the adjustment signal to adjust the voltage to adjust the rotation speed of the fan. A single-wire signal control method for adjusting a usage state of a load unit, the control method comprising the steps of: adjusting a magnitude of an alternating voltage, wherein the alternating voltage is a plurality of positive half waves and a plurality of negative half waves Forming a sine wave signal; detecting the positive half wave and the width of the negative half wave; and performing an adjustment procedure to adjust the usage state of the load unit according to the result of the detecting. The single-wire signal control method of claim 11, wherein before the step of adjusting the magnitude of the alternating voltage, the method further comprises the step of receiving an adjustment signal, wherein the alternating voltage is adjusted according to the adjustment signal. For the single-wire signal control method described in claim 11, if the load unit is a light fixture, the adjustment procedure includes the following steps: determining whether the positive half wave is greater than the width of the negative half wave; If the above determination is yes, then boost to brighten the fixture; and otherwise, step down to dim the fixture. According to the single-line signal control method described in claim 11, if the load unit is a fan, the adjustment procedure includes the following steps: determining whether the positive half wave is greater than the width of the negative half wave; Yes, then boost to speed up the fan; and, otherwise, step down to slow down the fan.