Bidirectional colored lights triggered by pulse signals from series and parallel power lines

Abstract

The present invention discloses a bidirectional colored light that is triggered by a power line pulse signal in series and parallel connection. The light string comprises a bidirectionally emitting power line pulse-triggered light string, a first controllable switch, a second controllable switch, a third controllable switch, and a fourth controllable switch. The bidirectionally emitting power line pulse-triggered light string includes a plurality of bidirectional light sources, each of which includes a power line pulse signal-triggered light module and a reverse light module. The power line pulse signal-triggered light module includes an LED colored light group and an LED driver for driving the LED colored light group according to a power line pulse signal applied to the power line. The present invention realizes a bidirectional colored light that is triggered by a power line pulse signal by controlling the second and fourth controllable switches, thereby simplifying the control circuit. Furthermore, a spectral range is obtained by using a forward current and a power line pulse signal-triggered operation, and another spectral range is added by reverse operation. Only two power lines are required to significantly increase the spectral range of the light source, the light string, and its control device.

Description

Technical Field

[0001] The invention relates to the field of LED colored lights, in particular to a bidirectional colored light whose operation is triggered by pulse signals of series-parallel power lines. Background Art

[0002] Currently, there are "arithmetic operation device and LED driver triggered by power line edge signal" and Chinese invention patent "color light device based on power line edge signal control" (Chinese invention patent ZL201410632645.7, Chinese invention patent ZL201410775449.5) on the market. Due to its high cost performance, this patented technology has achieved large-scale industrial application.

[0003] The Chinese invention patent "Bidirectionally luminous power line pulse signal triggered light source, light string, and control device thereof" (publication number CN114364096A) discloses a bidirectionally luminous power line pulse triggered control device, comprising a bidirectionally luminous power line pulse triggered light string, a first controllable switch, a second controllable switch, a third controllable switch, and a fourth controllable switch. FIG. 8 and the embodiments of the patent further disclose a controllable switch module suitable for series-parallel connection, which achieves cross-voltage control of voltages greater than 5V by controlling the NMOS in the controllable switch module.

[0004] To achieve cross-voltage control greater than 5V through additional NMOS control, it is necessary to control four groups of controllable switches separately. On the one hand, additional NMOS devices are needed, and on the other hand, the control ports of the corresponding controller circuit need to be increased, which increases the complexity of the circuit. Summary of the Invention

[0005] The purpose of the present invention is to provide a bidirectional colored lamp that triggers operation by series-parallel power line pulse signals. Only two groups of controllable switches need to be controlled to achieve control of four groups of controllable switches, thereby expanding the spectral range of the light source by allowing forward and reverse currents, and achieving color control by loading power line pulse signals on the power line.

[0006] A bidirectional colored light that triggers operation using a series-parallel power line pulse signal, characterized in that the bidirectional colored light comprises:

[0007] A bidirectionally luminous power line pulse-triggered light string, a first controllable switch, a second controllable switch, a third controllable switch, and a fourth controllable switch;

[0008] The bidirectional light-emitting power line pulse-triggered light string includes a plurality of bidirectional light sources, which are connected in parallel; or connected in parallel first and then in series; or connected in series first and then in parallel to a first port of the bidirectional light-emitting power line pulse-triggered light string and a second port of the bidirectional light-emitting power line pulse-triggered light string;

[0009] The bidirectional light source includes a light emitting module triggered by a power line pulse signal and a reverse light emitting module, wherein the light emitting module triggered by the power line pulse signal and the reverse light emitting module are connected in parallel to a first port of the bidirectional light source and a second port of the bidirectional light source;

[0010] The power line pulse signal triggered light emitting module includes an LED color light group and an LED driver for driving the LED color light group according to the power line pulse signal loaded by the power line;

[0011] When the first port level of the bidirectional luminous power line pulse-triggered light string is higher than the second port level of the bidirectional luminous power line pulse-triggered light string, the first port level of the bidirectional light source is higher than the second port level of the bidirectional light source, and the LED driver drives the LED colored light group according to the power line pulse signal loaded by the power line; when the first port level of the bidirectional luminous power line pulse-triggered light string is lower than the second port level of the bidirectional luminous power line pulse-triggered light string, the first port level of the bidirectional light source is lower than the second port level of the bidirectional light source, and the reverse light-emitting module works;

[0012] The second controllable switch and the fourth controllable switch are controlled by a control circuit;

[0013] The input end of the first controllable switch is connected to a DC power supply, the output end of the first controllable switch is connected to the first port of the bidirectional luminous power line pulse-triggered light string, and the control end of the first controllable switch is connected to the output end of the first voltage divider module; the first voltage divider module includes a first voltage divider resistor and a second voltage divider resistor, one end of the first voltage divider resistor is connected to the input end of the first controllable switch, the other end of the first voltage divider resistor serves as the output of the first voltage divider module and is connected to one end of the second voltage divider resistor, and the other end of the second voltage divider resistor is connected to the output end of the fourth controllable switch;

[0014] The output end of the second controllable switch is connected to the first port of the bidirectional luminous power line pulse-triggered light string, the input end of the second controllable switch is connected to the ground, and the control end of the second controllable switch is connected to the control circuit;

[0015] The input end of the third controllable switch is connected to the DC power supply, the output end of the third controllable switch is connected to the second port of the bidirectional luminous power line pulse-triggered light string, and the control end of the third controllable switch is connected to the output end of the second voltage divider module; the second voltage divider module includes a third voltage divider resistor and a fourth voltage divider resistor, one end of the third voltage divider resistor is connected to the input end of the third controllable switch, the other end of the third voltage divider resistor serves as the output of the second voltage divider module and is connected to one end of the fourth voltage divider resistor, and the other end of the fourth voltage divider resistor is connected to the output end of the second controllable switch;

[0016] The output end of the fourth controllable switch is connected to the second port of the bidirectional luminous power line pulse triggered light string, the input end of the fourth controllable switch is connected to the ground, and the control end of the fourth controllable switch is connected to the control circuit.

[0017] When the several bidirectional light sources of the bidirectional luminous power line pulse triggered light string are connected in parallel, the first ports of the several bidirectional light sources are electrically connected to the first port of the bidirectional luminous power line pulse triggered light string by a wire, and the second ports of the several bidirectional light sources are electrically connected to the second port of the bidirectional luminous power line pulse triggered light string by a wire.

[0018] When the several bidirectional light sources of the bidirectional power line pulse triggered light string are connected in series first and then in parallel, the several bidirectional light sources connected in series constitute a series group; the first port of the first bidirectional light source in the series group is electrically connected to the first port of the bidirectional power line pulse triggered light string, the second port of the previous bidirectional light source between the adjacent ones in the series group is electrically connected to the first port of the next bidirectional light source, and the second port of the last bidirectional light source in the series group is electrically connected to the second port of the bidirectional power line pulse triggered light string.

[0019] When the several bidirectional light sources of the bidirectional luminous power line pulse triggered light string are connected in parallel first and then in series, the several bidirectional light sources connected in parallel constitute a parallel group, and the several parallel groups are connected in series; the first ports of the several bidirectional light sources in the parallel group are electrically connected together to constitute the first common port of the parallel group, and the second ports of the several bidirectional light sources in the parallel group are electrically connected together to constitute the second common port of the parallel group; the first common port of the first parallel group is connected to the first port of the bidirectional luminous power line pulse triggered light string, and the second common port of the previous parallel group between adjacent parallel groups is electrically connected to the first common port of the next parallel group, and the second common port of the last parallel group is electrically connected to the second port of the bidirectional luminous power line pulse triggered light string.

[0020] Preferably, the first controllable switch is a first PMOS transistor, the source of the first PMOS transistor serves as the input terminal of the first controllable switch, the drain of the first PMOS transistor serves as the output terminal of the first controllable switch, and the gate of the first PMOS transistor serves as the control terminal of the first controllable switch;

[0021] The third controllable switch is a third PMOS transistor, the source of the third PMOS transistor serves as the input end of the third controllable switch, the drain of the third PMOS transistor serves as the output end of the third controllable switch, and the gate of the third PMOS transistor serves as the control end of the third controllable switch;

[0022] When the control circuit controls the fourth controllable switch to be turned off, the voltage level at the output end of the first voltage divider module is equal to the voltage level at the source of the first PMOS transistor, and the first PMOS transistor is turned off; when the control circuit controls the fourth controllable switch to be turned on, the voltage level at the output end of the first voltage divider module is less than the voltage level at the source of the first PMOS transistor, and the first PMOS transistor is turned on;

[0023] When the control circuit controls the second controllable switch to be turned off, the output voltage level of the second voltage divider module is equal to the source voltage level of the third PMOS tube, and the third PMOS tube is turned off; when the control circuit controls the second controllable switch to be turned on, the output voltage level of the second voltage divider module is less than the source voltage level of the third PMOS tube, and the third PMOS tube is turned on.

[0024] Preferably, when the control circuit controls the second controllable switch to be turned off and the control circuit controls the fourth controllable switch to be turned on, the LED driver drives the LED colored light group according to the power line pulse signal loaded on the power line.

[0025] When the control circuit controls the fourth controllable switch to be turned off and the control circuit controls the second controllable switch to be turned on, the reverse light-emitting module works.

[0026] Preferably, the control circuit controls the second controllable switch to be cut off, and the control circuit controls the fourth controllable switch to switch between the on state and the off state, generates a power line pulse signal loaded on the power line and loads it on the power line, and the LED driver drives the LED colored light group according to the power line pulse signal loaded on the power line.

[0027] As another embodiment, when the control circuit controls the second controllable switch to be turned off and the control circuit controls the fourth controllable switch to be turned on, the LED driver drives the LED colored light group according to a power line pulse signal applied to the power line, and the power line pulse signal is applied by an additional circuit. The additional circuit sets the low level of the power line pulse signal to a third level that is higher than the level of the second port of the bidirectional light source and lower than the level of the first port of the bidirectional light source.

[0028] The first power line pulse signal triggered light emitting module and the reverse light emitting module can be packaged together, can be welded together through other carriers, or can be connected together through wires of several lengths.

[0029] It should be understood that the reverse light-emitting module can operate in a constant state mode or a controlled variable state mode.

[0030] The LED driver includes: a reverse current blocking module, a power line pulse signal triggering operation module;

[0031] When the level of the first port of the bidirectional light source is higher than that of the second port of the bidirectional light source, the first power line pulse signal triggers the light-emitting module to drive the LED colored light group according to the power line pulse signal loaded on the first port of the bidirectional light source, or the second port of the bidirectional light source, or the combination of the first port of the bidirectional light source and the second port of the bidirectional light source.

[0032] The power line pulse signal can be active when it is a high pulse, active when it is a low pulse, or a combination of the high and low pulses. Preferably, the low level of the power line pulse signal is the level of the second port of the bidirectional light source. In another embodiment, the low level of the power line pulse signal is a third level that is higher than the level of the second port of the bidirectional light source and lower than the level of the first port of the bidirectional light source.

[0033] The input end of the reverse current blocking module is connected to the first port of the bidirectional light source, the output end of the reverse current blocking module is connected to the power line pulse signal triggering operation module, the ground of the power line pulse signal triggering operation module is connected to the second port of the bidirectional light source, and the power line pulse signal triggering operation module drives the LED colored light group according to the operation result.

[0034] Preferably, a pull-down resistor is connected between the output end of the reverse current prevention module and the ground of the power line pulse signal triggering operation module.

[0035] Preferably, the LED colored light group can be connected to a common anode, and the cathodes of the LEDs in the LED colored light group are respectively connected to the output end of the power line pulse signal triggering operation module; the common anode of the LED colored light group can be connected to the output end of the reverse current blocking module, or the common anode of the LED colored light group can also be connected to the input end of the reverse current blocking module. As another embodiment, the LED colored light group can be connected to a common cathode, and the anodes of the LEDs in the LED colored light group are respectively connected to the output end of the power line pulse signal triggering operation module, and the common cathode of the LED colored light group is connected to the second port of the bidirectional light source.

[0036] Preferably, the power line pulse signal triggers the calculation module to perform calculations triggered by the pulse signal, and the calculation results drive the LED light array. It should be understood that the calculation can be understood as a change in the internal state of the calculation module triggered by the power line pulse signal; further, the calculation can be an arithmetic operation, a logical operation, or a combination of arithmetic and logical operations. Preferably, the power line pulse signal triggers the calculation module to perform a pulse counting operation triggered by the pulse signal. In another embodiment, the power line pulse signal triggers the calculation module to perform encoding and decoding operations triggered by the pulse signal, with the high and low level widths of the pulse corresponding to the encoded information. Furthermore, the high and low level widths of the pulse corresponding to the encoded information should be understood as: high levels of different lengths, low levels of different lengths, or a combination of high and low levels of different lengths represent different logical encoding information. Preferably, a high pulse of less than 100 μs in length corresponds to a logical 0, and a high pulse of greater than or equal to 100 μs in length corresponds to a logical 1. In another embodiment, the power line pulse signal triggers the calculation module to perform modulation and demodulation operations based on current or voltage frequency, and drives the LED light array based on the modulation and demodulation results. Furthermore, it should be understood that the pulse signal triggering the operation can be triggered by a single pulse signal or by a combination of several pulse signals.

[0037] Preferably, the reverse current preventing module can be a single device or a combination of multiple devices. The reverse current preventing module can be a resistor, which limits the reverse current to a range of less than 500 mA.

[0038] Preferably, the reverse current blocking module is a unidirectional conductive module, which is turned on when the input terminal level of the reverse current blocking module is higher than the output terminal of the reverse current blocking module, and is cut off when the input terminal level of the reverse current blocking module is lower than the output terminal of the reverse current blocking module.

[0039] Preferably, the unidirectional conductive module is a diode, the anode of the diode is connected to the first port of the bidirectional light source, and the cathode is connected to the power line pulse signal triggering operation module; or the unidirectional conductive module is an equivalent diode formed by an NPN transistor, the collector and base of the NPN transistor are connected to the first port of the bidirectional light source, and the emitter is connected to the power line pulse signal triggering operation module; or the unidirectional conductive module is an equivalent diode formed by a PNP transistor, the collector and base of the PNP transistor are connected to the power line pulse signal triggering operation module, and the emitter is connected to the first port of the bidirectional light source.

[0040] Preferably, the reverse current blocking module and the power line pulse signal triggering operation module are integrated into the same integrated circuit. By integrating the reverse current blocking module and the power line pulse signal triggering operation module into the same integrated circuit, the need for additional components to prevent reverse current from damaging the power line pulse signal triggering operation module during packaging is avoided, the complexity of the packaging die bonding and wiring processes is reduced, packaging efficiency is improved, the probability of packaging errors is reduced, and the cost of the lamp beads is reduced.

[0041] As another implementation manner, the reverse current preventing module and the power line pulse signal triggering operation module are implemented by different independent modules.

[0042] Preferably, the reverse light-emitting module is composed of a plurality of LEDs. Furthermore, the plurality of LEDs may be one or more. The plurality of LEDs may be connected in parallel, first in parallel and then in series, or first in series and then in parallel. Preferably, the reverse light-emitting module may be a warm white color.

[0043] In another embodiment, the reverse light-emitting module is a light-emitting module triggered by a second power line pulse signal. When the voltage level at the first port of the bidirectional light source is lower than that at the second port of the bidirectional light source, the light-emitting module triggered by the second power line pulse signal drives the LED colored light group of the light-emitting module according to the power line pulse signal applied to the power line. Preferably, the light-emitting module triggered by the second power line pulse signal has the same structure as the light-emitting module triggered by the first power line pulse signal.

[0044] Preferably, the LED colored light group of the light emitting module triggered by the second power line pulse signal is of a different color from the LED colored light group of the light emitting module triggered by the first power line pulse signal. Preferably, the LED colored light group of the light emitting module triggered by the second power line pulse signal is warm white, golden light, or cool white.

[0045] Preferably, the power line pulse signal triggering operation module includes:

[0046] The pulse triggering operation unit is used to trigger the operation according to the pulse signal input from the power line and output the operation result;

[0047] The charging unit is used to provide a power supply level for the pulse triggering operation unit according to the pulse signal input from the power line. It charges when the pulse signal is at a high level and discharges when the pulse signal is at a low level.

[0048] The initialization unit is used to initialize the pulse triggering operation unit according to the power supply level.

[0049] The various functional units in the computing device triggered by the power line pulse signal of the present invention can be integrated into a computing chip.

[0050] In the present invention, the pulse trigger operation unit can be initialized to any number and set as needed, usually to "zero" (ie, cleared).

[0051] When the power line pulse signal is at a high level, the charging unit is charged. When the level provided by the charging unit reaches a high level, the pulse triggers the operation unit and the initialization unit to power on successfully.

[0052] The pulse triggering operation unit performs a counting operation, an arithmetic operation, a logical operation or a shift operation, or performs an operation composed of a counting operation, an arithmetic operation, a logical operation, a shift operation and the like.

[0053] Preferably, the pulse triggering operation unit is a pulse counting unit, which is used to count the pulses of the pulse signal input from the power line and output the counting result.

[0054] The pulse counting unit includes a plurality of triggers, and outputs the counting results through the output ends of the triggers.

[0055] Preferably, the trigger is a D trigger.

[0056] Preferably, the pulse counting unit comprises a plurality of D flip-flops connected in series, and outputs the counting result at the output end of the D flip-flop, wherein:

[0057] The clock signal input terminal of the first D flip-flop is connected to the power line, and the clock signal input terminal of the latter D flip-flop of two adjacent D flip-flops is connected to the inverting output terminal of the former D flip-flop;

[0058] The reset terminal of each D flip-flop is connected to the initialization unit, and the inverting output terminal of each D flip-flop is connected to the trigger terminal.

[0059] It should be understood that it is permissible to add a resistor to limit current between each port of the controllable switch and the corresponding connection port, and to add a capacitor to each end of the controllable switch.

[0060] Preferably, the second controllable switch and the fourth controllable switch are NMOS devices.

[0061] The present invention achieves a bidirectional colored light that is triggered and driven by a power line pulse signal by controlling the second and fourth controllable switches. Compared to the prior art, the present invention simplifies the control circuit. By using forward current and triggering the operation using the power line pulse signal to obtain one spectral range, and then adding another spectral range through reverse current, the present invention significantly increases the spectral range of the light source, light string, and its control device, requiring only two power lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 A bidirectional colored light with a series-parallel power line pulse triggering operation provided by the embodiment;

[0063] Figure 2 is a bidirectional luminous light source in the embodiment;

[0064] Figure 3 It is the power line pulse signal triggering operation module in the embodiment. DETAILED DESCRIPTION

[0065] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0066] like Figure 1 As shown, the bidirectional colored lights provided by the embodiment of the present invention with power line pulse triggering operation in series and parallel connection include a power line pulse triggering light string 11 for bidirectional lighting, a first controllable switch 12, a second controllable switch 13, a third controllable switch 14 and a fourth controllable switch 15;

[0067] The bidirectional power line pulse triggered light string 11 includes three bidirectional light sources 111, 112, and 113. The three bidirectional light sources 111, 112, and 113 are connected in parallel to the first port 16 and the second port 17 of the bidirectional power line pulse triggered light string.

[0068] The second controllable switch 13 and the fourth controllable switch 15 are controlled by a single chip microcomputer;

[0069] The first controllable switch 12 is a PMOS, the second controllable switch 13 is an NMOS, the third controllable switch 14 is a PMOS, and the fourth controllable switch 15 is an NMOS.

[0070] The input end of the first controllable switch 12 is connected to the DC power supply 18, the output end of the first controllable switch 12 is connected to the first port 16 of the bidirectional luminous power line pulse trigger light string 11, and the control end of the first controllable switch 12 is connected to the output end of the first voltage divider module 19; wherein the first voltage divider module 19 includes a first voltage divider resistor 191 (10K ohm) and a second voltage divider resistor 192 (10K ohm). One end of the first voltage divider resistor 191 is connected to the input end of the first controllable switch 12, and the other end of the first voltage divider resistor 191 serves as the output of the first voltage divider module 19 and is connected to one end of the second voltage divider resistor 192. The other end of the second voltage divider resistor 192 is connected to the output end of the fourth controllable switch 15;

[0071] The output end of the second controllable switch 13 is connected to the first port 16 of the bidirectional luminous power line pulse trigger light string 11, the input end of the second controllable switch 13 is connected to the ground 20, and the control end of the second controllable switch 13 is connected to the control circuit (single chip microcomputer);

[0072] The input end of the third controllable switch 14 is connected to the DC power supply 18, the output end of the third controllable switch 14 is connected to the second port 17 of the bidirectional luminous power line pulse trigger light string 11, and the control end of the third controllable switch 14 is connected to the output end of the second voltage divider module 201; wherein the second voltage divider module 201 includes a third voltage divider resistor 2011 (10K ohms) and a fourth voltage divider resistor 2012 (10K ohms). One end of the third voltage divider resistor 2011 is connected to the input end of the third controllable switch 14, and the other end of the third voltage divider resistor 2011 serves as the output of the second voltage divider module 201 and is connected to one end of the fourth voltage divider resistor 2012. The other end of the fourth voltage divider resistor 2012 is connected to the output end of the second controllable switch 13;

[0073] The output end of the fourth controllable switch 15 is connected to the second port 17 of the bidirectional luminous power line pulse trigger light string 11, the input end of the fourth controllable switch 15 is connected to the ground 20, and the control end of the fourth controllable switch 15 is connected to the control circuit (single chip microcomputer).

[0074] In this embodiment, the second controllable switch 13 is turned off, the third controllable switch 14 is controlled by the second controllable switch 13 to work in the cut-off state, and the control circuit controls the conduction and cut-off of the fourth controllable switch 15 to control the power line pulse signal in the bidirectionally luminous power line pulse triggering lamp string 11 to trigger the light-emitting module; the fourth controllable switch 15 is turned off, the first controllable switch 12 is controlled by the fourth controllable switch 15 to work in the cut-off state, and the second controllable switch 13 is controlled by the control circuit to work in the conduction state, and the bidirectionally luminous power line pulse triggering lamp string 11 reverse light-emitting module works.

[0075] In this embodiment, the bidirectional light sources 111, 112, and 113 are as follows: Figure 2 Shown, including:

[0076] The power line pulse signal triggers the light emitting module 21 and the reverse light emitting module 22, which are connected in parallel to the first port 23 and the second port 24 of the bidirectional light source.

[0077] The power line pulse signal triggered light emitting module 21 includes an LED color light group 211 and an LED driver 212 for driving the LED color light group 211 according to the power line pulse signal loaded on the power line;

[0078] When the electrical level of the first port 23 of the bidirectional light source is higher than that of the second port 24 of the bidirectional light source, the LED driver 212 drives the LED colored light group 211 according to the power line pulse signal loaded by the power line; when the electrical level of the first port 23 of the bidirectional light source is lower than that of the second port 24 of the bidirectional light source, the reverse light-emitting module 22 works.

[0079] The LED driver 212 includes: a reverse current blocking module 2121, a power line pulse signal triggering operation module 2122;

[0080] The input end of the reverse current blocking module 2121 is connected to the first port 23 of the bidirectional light source, and the output end of the reverse current blocking module 2121 is connected to the power line pulse signal triggering operation module 2122, which drives the LED colored light group 211 according to the operation result.

[0081] In this embodiment, the LED colored light group 211 is connected with a common anode. The LED colored light group 211 includes a red light-emitting diode 2111, a green light-emitting diode 2112 and a blue light-emitting diode 2113. The cathodes of the red light-emitting diode 2111, the green light-emitting diode 2112 and the blue light-emitting diode 2113 are respectively connected to the output end of the power line pulse signal triggering operation module 2122, and the red light-emitting diode 2111, the green light-emitting diode 2112 and the blue light-emitting diode 2113 have a common anode connected to the output end of the reverse current blocking module 2121.

[0082] In this embodiment, the reverse current blocking module 2121 is a diode, the anode of the diode is connected to the first port 23 of the bidirectional light source, and the cathode of the diode is connected to the power line pulse signal triggering operation module 2122 .

[0083] In this embodiment, if Figure 3 As shown, the power line pulse signal trigger operation module 3 (2122) includes: a pulse trigger operation unit 31, which is used to trigger the operation according to the pulse signal input from the power line and output the operation result; a charging unit 32, which is used to provide a power supply level for the pulse trigger operation unit according to the pulse signal input from the power line, charging when the pulse signal is at a high level and discharging when the pulse signal is at a low level; an initialization unit 33, which is used to initialize the pulse trigger operation unit according to the power supply level.

[0084] The power line pulse signal triggers the calculation module 3 (2122) of this embodiment to perform pulse counting calculation triggered by the pulse signal, and drives the colored light group 211 according to the calculation result.

[0085] In this embodiment, the reverse current preventing module 2121 and the power line pulse signal triggering operation module 2122 are integrated into the same integrated circuit.

[0086] In this embodiment, the reverse light-emitting module 22 is a warm white light-emitting diode, the anode of which is connected to the second port 24 of the bidirectional light source, and the cathode of which is connected to the first port 23 of the bidirectional light source.

[0087] The present invention achieves bidirectional colored lights driven by power line pulse signals by controlling the second and fourth controllable switches. Compared to existing technologies, this invention simplifies the control circuitry. By using forward current and triggering calculations based on power line pulse signals to obtain one spectral range, and then adding another spectral range through reverse current, the present invention significantly increases the spectral range of the light source, light string, and its control device, using only two power lines.

Claims

1. A bidirectional colored light that triggers operation with a series-parallel power line pulse signal, characterized in that: The two-way colored light comprises: A bidirectionally luminous power line pulse-triggered light string, a first controllable switch, a second controllable switch, a third controllable switch, and a fourth controllable switch; The bidirectional light-emitting power line pulse-triggered light string includes a plurality of bidirectional light sources, which are connected in parallel; or connected in parallel first and then in series; or connected in series first and then in parallel to a first port of the bidirectional light-emitting power line pulse-triggered light string and a second port of the bidirectional light-emitting power line pulse-triggered light string; The bidirectional light source includes a light emitting module triggered by a power line pulse signal and a reverse light emitting module, wherein the light emitting module triggered by the power line pulse signal and the reverse light emitting module are connected in parallel to a first port of the bidirectional light source and a second port of the bidirectional light source; The power line pulse signal triggered light emitting module includes an LED color light group and an LED driver for driving the LED color light group according to the power line pulse signal loaded by the power line; When the first port level of the bidirectional luminous power line pulse-triggered light string is higher than the second port level of the bidirectional luminous power line pulse-triggered light string, the first port level of the bidirectional light source is higher than the second port level of the bidirectional light source, and the LED driver drives the LED colored light group according to the power line pulse signal loaded by the power line; when the first port level of the bidirectional luminous power line pulse-triggered light string is lower than the second port level of the bidirectional luminous power line pulse-triggered light string, the first port level of the bidirectional light source is lower than the second port level of the bidirectional light source, and the reverse light-emitting module works; The second controllable switch and the fourth controllable switch are controlled by a control circuit; The input end of the first controllable switch is connected to a DC power supply, the output end of the first controllable switch is connected to the first port of the bidirectional luminous power line pulse-triggered light string, and the control end of the first controllable switch is connected to the output end of the first voltage divider module; the first voltage divider module includes a first voltage divider resistor and a second voltage divider resistor, one end of the first voltage divider resistor is connected to the input end of the first controllable switch, the other end of the first voltage divider resistor serves as the output of the first voltage divider module and is connected to one end of the second voltage divider resistor, and the other end of the second voltage divider resistor is connected to the output end of the fourth controllable switch; The output end of the second controllable switch is connected to the first port of the bidirectional luminous power line pulse-triggered light string, the input end of the second controllable switch is connected to the ground, and the control end of the second controllable switch is connected to the control circuit; The input end of the third controllable switch is connected to the DC power supply, the output end of the third controllable switch is connected to the second port of the bidirectional luminous power line pulse-triggered light string, and the control end of the third controllable switch is connected to the output end of the second voltage divider module; the second voltage divider module includes a third voltage divider resistor and a fourth voltage divider resistor, one end of the third voltage divider resistor is connected to the input end of the third controllable switch, the other end of the third voltage divider resistor serves as the output of the second voltage divider module and is connected to one end of the fourth voltage divider resistor, and the other end of the fourth voltage divider resistor is connected to the output end of the second controllable switch; The output end of the fourth controllable switch is connected to the second port of the bidirectional luminous power line pulse triggered light string, the input end of the fourth controllable switch is connected to the ground, and the control end of the fourth controllable switch is connected to the control circuit; The first controllable switch is a first PMOS transistor, the source of the first PMOS transistor serves as the input terminal of the first controllable switch, the drain of the first PMOS transistor serves as the output terminal of the first controllable switch, and the gate of the first PMOS transistor serves as the control terminal of the first controllable switch; The third controllable switch is a third PMOS transistor, the source of the third PMOS transistor serves as the input end of the third controllable switch, the drain of the third PMOS transistor serves as the output end of the third controllable switch, and the gate of the third PMOS transistor serves as the control end of the third controllable switch; When the control circuit controls the fourth controllable switch to be turned off, the voltage level at the output end of the first voltage divider module is equal to the voltage level at the source of the first PMOS transistor, and the first PMOS transistor is turned off; when the control circuit controls the fourth controllable switch to be turned on, the voltage level at the output end of the first voltage divider module is less than the voltage level at the source of the first PMOS transistor, and the first PMOS transistor is turned on; When the control circuit controls the second controllable switch to be turned off, the output voltage of the second voltage divider module is equal to the source voltage of the third PMOS tube, and the third PMOS tube is turned off; when the control circuit controls the second controllable switch to be turned on, the output voltage of the second voltage divider module is lower than the source voltage of the third PMOS tube, and the third PMOS tube is turned on; The control circuit controls the second controllable switch to be cut off, and the control circuit controls the fourth controllable switch to switch between the on state and the off state, generates a power line pulse signal loaded on the power line and loads it on the power line, and the LED driver drives the LED colored light group according to the power line pulse signal loaded on the power line.

2. The bidirectional colored light with serial-parallel power line pulse signal triggering operation as claimed in claim 1, characterized in that: The LED driver comprises: Reverse current prevention module, power line pulse signal triggering operation module; The input end of the reverse current blocking module is connected to the first port of the bidirectional light source, and the output end of the reverse current blocking module is connected to the power line pulse signal triggering operation module, and the power line pulse signal triggering operation module drives the LED colored light group according to the operation result.

3. The bidirectional colored light with serial-parallel power line pulse signal triggering operation as claimed in claim 2, characterized in that: The reverse current blocking module is a unidirectional conductive module. It is turned on when the input terminal level of the reverse current blocking module is higher than the output terminal of the reverse current blocking module, and is turned off when the input terminal level of the reverse current blocking module is lower than the output terminal of the reverse current blocking module.

4. The bidirectional colored light with serial-parallel power line pulse signal triggering operation as claimed in claim 3, characterized in that: The unidirectional conductive module is a diode, the anode of the diode is connected to the first port of the bidirectional light source, and the cathode is connected to the power line pulse signal triggering operation module; or the unidirectional conductive module is an equivalent diode formed by an NPN transistor, the collector and base of the NPN transistor are connected to the first port of the bidirectional light source, and the emitter is connected to the power line pulse signal triggering operation module; or the unidirectional conductive module is an equivalent diode formed by a PNP transistor, the collector and base of the PNP transistor are connected to the power line pulse signal triggering operation module, and the emitter is connected to the first port of the bidirectional light source.

5. The bidirectional colored light with serial-parallel power line pulse signal triggering operation as claimed in claim 4, characterized in that: The reverse current preventing module and the power line pulse signal triggering operation module are integrated into the same integrated circuit.

6. The bidirectional colored light with serial-parallel power line pulse signal triggering operation as claimed in claim 5, characterized in that: The low level of the power line pulse signal received by the bidirectional light source is the second port level of the bidirectional light source.

7. The bidirectional colored light with series-parallel power line pulse signal triggering operation as claimed in claim 5, characterized in that: The low level of the power line pulse signal received by the bidirectional light source is a third level that is higher than a level of the second port of the bidirectional light source and lower than a level of the first port of the bidirectional light source.

8. The bidirectional colored light with series-parallel power line pulse signal triggering operation as claimed in claim 5, characterized in that: The power line pulse signal of the bidirectional light source triggers the calculation module to perform calculations triggered by the pulse signal, and drives the colored light group according to the calculation results.

9. The bidirectional colored lamp with series-parallel power line pulse signal triggering operation as claimed in claim 8, characterized in that: The operation is an arithmetic operation, a logical operation, or a combination of an arithmetic operation and a logical operation.

10. The bidirectional colored lamp with series-parallel power line pulse signal triggering operation as claimed in claim 5, characterized in that: The power line pulse signal of the bidirectional light source triggers the operation module to perform encoding and decoding operations triggered by the pulse signal, and the high and low level widths of the pulse correspond to the encoding information.

11. The bidirectional colored lamp with series-parallel power line pulse signal triggering operation as claimed in claim 10, characterized in that: High levels of different lengths, or low levels of different lengths, or a combination of high levels of different lengths and low levels of different lengths represent different logical coding information.

12. The bidirectional colored lamp with series-parallel power line pulse signal triggering operation as claimed in claim 5, characterized in that: The power line pulse signal triggering operation module of the bidirectional light source is triggered by the pulse signal to perform modulation and demodulation operation based on current or voltage frequency, and drives the LED colored light group according to the modulation and demodulation operation result.

13. The bidirectional colored light with serial-parallel power line pulse signal triggering operation as claimed in claim 1, characterized in that: The reverse light-emitting module is composed of a plurality of LEDs.

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