TWM616471U - Driving device with memory function - Google Patents

Abstract

Driving device with memory function includes a conversion circuit, a control circuit, a switching circuit, a voltage divider circuit, and a memory. The conversion circuit is configured to receive a power supply voltage so as to provide a conversion voltage. The control circuit is configured to provide a first control voltage, a second control voltage, or a third control voltage according to the converted voltage. The switching circuit is configured to determine a conduction state of a first output terminal and a second output terminal according to the first driving signal, the second control voltage, or the third control voltage. The voltage divider circuit is configured to provide a memory signal according to the converted voltage. The memory is configured to store the conductive state. If the voltage of the memory signal is greater than a preset voltage, the control circuit is configured to control the switching circuit to maintain the conductive state of the first output terminal and the second output terminal.

Description

Drive device with memory function

This case is related to lighting devices, and particularly to driving devices with memory functions that can be applied to light-emitting diodes.

People will use white light with different color temperatures in different places to create different atmospheres. However, the color cycle setting of general lighting devices is rigid and needs to be manually switched each time. For example, the color arrangement of the lighting device is white/cool white/warm white. When warm white is required, the switch needs to be switched twice, which is very troublesome.

The new content aims to provide a simplified summary of the content of the disclosure so that readers have a basic understanding of the content of the disclosure. This new content is not a complete overview of the present disclosure, and its intention is not to point out the important/key elements of the embodiments of the present case or to define the scope of the present case.

One of the technical aspects of this case relates to a drive device with memory function. The driving device with memory function includes a conversion circuit, a control circuit, a switching circuit, a first output terminal, a second output terminal, a voltage divider circuit and a memory. The conversion circuit is used for receiving the power supply voltage to provide a conversion voltage. The control circuit is used for providing the first control voltage, the second control voltage or the third control voltage according to the conversion voltage. The switching circuit is used for determining the conduction state of the first output terminal and the second output terminal according to the first control voltage, the second control voltage or the third control voltage. The voltage divider circuit is used to provide a memory signal according to the converted voltage. The memory is used to memorize the conduction state. If the voltage of the received memory signal is greater than the preset voltage, the control circuit is used to control the switching circuit to maintain the conduction state of the first output terminal and the second output terminal.

Therefore, according to the technical content of this case, the driving device with memory function shown in the embodiment of this case can be adapted to memorize the color temperature or brightness state of the luminous body before turning off, and it is not necessary to repeatedly switch the switch to reach the state before turning off.

After referring to the following implementation modes, those with ordinary knowledge in the technical field of this case can easily understand the basic spirit and other new goals of this case, as well as the technical means and implementation patterns adopted in this case.

In order to make the description of the present disclosure more detailed and complete, the following provides an illustrative description for the implementation of the case and specific embodiments; this is not the only way to implement or use the specific embodiments of the case. The implementation manners cover the characteristics of a number of specific embodiments and the method steps and sequences used to construct and operate these specific embodiments. However, other specific embodiments can also be used to achieve the same or equal functions and sequence of steps.

Unless otherwise defined in this specification, the scientific and technical terms used here have the same meaning as understood and used by those with ordinary knowledge in the technical field to which this case belongs. In addition, without conflict with the context, the singular nouns used in this specification cover the plural nouns; and the plural nouns used also cover the singular nouns.

In addition, the "coupling" or "connection" used in this text can refer to two or more components directly making physical or electrical contact with each other, or indirectly making physical or electrical contact with each other, and can also refer to two or more components. Interoperability or action of two components.

In this article, the term "circuit" generally refers to an object that is connected in a certain manner by one or more transistors and/or one or more active and passive components to process signals.

In the specification and the scope of the patent application, certain words are used to refer to specific elements. However, those with ordinary knowledge in the technical field should understand that the same element may be called by different terms. The specification and the scope of patent application do not use the difference in names as a way of distinguishing components, but the difference in function of the components as the basis for distinguishing. The "including" mentioned in the specification and the scope of the patent application is an open term, so it should be interpreted as "including but not limited to".

FIG. 1 is a schematic diagram of a driving device with a memory function according to an embodiment of the present invention. As shown in the figure, the driving device 100 with a memory function includes a conversion circuit 110, a control circuit 120, a switching circuit 130, a first output terminal 140, a second output terminal 150, a voltage divider circuit 160, and a memory 170. In terms of connection, the control circuit 120 is coupled to the conversion circuit 110, the switching circuit 130 is coupled to the control circuit 120, the first output terminal 140 is coupled to the control circuit 120 through the switching circuit 130, and the second output terminal 150 is coupled to the switching circuit 130. It is coupled to the control circuit 120. In addition, the control circuit 120 includes a voltage divider circuit 160 and a memory 170.

In order to provide a driving device with a memory function that memorizes the color temperature state of the light-emitting body before it is turned off, the present application provides a driving device 100 with a memory function as shown in FIG. 1, and the related operations are described in detail below.

In one embodiment, the conversion circuit 110 is used to receive the power supply voltage Vin to provide a conversion voltage. The control circuit 120 is used for providing the first control voltage, the second control voltage or the third control voltage according to the conversion voltage. The switching circuit 130 is used for determining the conduction state of the first output terminal 140 and the second output terminal 150 according to the first control voltage, the second control voltage or the third control voltage. The voltage divider circuit 160 is used to provide a memory signal according to the converted voltage. The memory 170 is used to memorize the conduction state. If the voltage of the received memory signal is greater than the preset voltage, the control circuit 120 is used to control the switching circuit 130 so that the first output terminal 140 and the second output terminal 150 maintain the conduction of the previous use state.

In order to make the above-mentioned operation of the driving device 100 with memory function easy to understand, please refer to FIGS. 1 to 4 together. FIG. 2 is a schematic diagram of a driving device with memory function according to an embodiment of the present invention. FIG. 3 is a detailed circuit diagram of the conversion circuit of the driving device with memory function shown in FIG. 2 according to an embodiment of the present case. FIG. 4 is a detailed circuit diagram of a control circuit and a switching circuit of a driving device with a memory function shown in FIG. 2 according to an embodiment of the present case.

As shown in FIG. 3, the conversion circuit 110 is used to receive the power supply voltage Vin to provide a conversion voltage. As shown in FIG. 4, the control circuit 120 is used to provide the first control voltage V1, the second control voltage V2, or the third control voltage V3 according to the conversion voltage. It should be noted that the above-mentioned third control voltage V3 is the combined output of the first control voltage V1 and the second control voltage V2 at the same time.

Please continue to refer to FIG. 4, the switching circuit 130 is used to determine the conduction state of the first output terminal 140 and the second output terminal 150 according to the first control voltage V1, the second control voltage V2 or the third control voltage V3. For example, when the microcontroller U4 of the switching circuit 130 receives the first control voltage V1, the output terminal O1 of the microcontroller U4 is turned on to switch to the path of the first output terminal 140, so that the first luminous body L1 is turned on And glow. When the microcontroller U4 of the switching circuit 130 receives the second control voltage V2, the output terminal O2 of the microcontroller U4 is turned on to switch to the path of the second output terminal 150, so that the second luminous body L2 is turned on and emits light. When the microcontroller U4 of the switching circuit 130 receives the third control voltage V3, the output terminal O1 and the output terminal O2 of the microcontroller U4 are turned on at the same time, and the paths of the first output terminal 140 and the second output terminal 150 are simultaneously turned on. The first luminous body L1 and the second luminous body L2 are simultaneously turned on and emit light.

In addition, the first luminous body L1 can be turned on to emit yellow light, and the second luminous body L2 can be turned on to emit white light. If the first luminous body L1 and the second luminous body L2 are both turned on, they can simultaneously emit yellow light and white light.

Then, the voltage divider circuit 160 is used to provide a memory signal according to the converted voltage. The memory 170 is used to memorize the conduction state. If the voltage of the memory signal is greater than the preset voltage, the control circuit 120 is used to control the switching circuit 130 so that the first output terminal 140 and the second output terminal 150 maintain the conduction state of the previous use . For example, after receiving the converted voltage, the voltage divider circuit 160 divides the memory signal through internal resistors. The memory 170 receives the memory signal. If the preset voltage is 5V, when the voltage of the memory signal is greater than 5V, the memory 170 stores the conduction state of the first output terminal 140 and/or the second output terminal 150 at this time.

Please refer to FIGS. 1 to 4 together. In one embodiment, the voltage divider circuit 160 is coupled to the conversion circuit 110. The voltage divider circuit 160 receives the converted voltage and transmits at least The two resistors divide the converted voltage to generate a memory signal.

In another embodiment, the at least two resistors of the voltage divider circuit 160 include a first resistor R26 and a second resistor R30. The first resistor R26 is coupled to the conversion circuit 110, and the first resistor R26 is used to receive the converted voltage. The second resistor R30 and the first resistor R26 are coupled to the node G. The first resistor R26 and the second resistor R30 divide the converted voltage together to generate a memory signal from the node G. For example, if the conversion voltage is 10V and the first resistor R26 and the second resistor R30 are both 100K ohms, the memory signal divided by the resistors is 5V.

In another embodiment, the control circuit 120 includes a detection terminal CLK, which is coupled to the memory 170, and the control circuit 120 detects the memory signal stored in the memory 170 through the detection terminal CLK to determine whether to provide the first The control voltage V1, the second control voltage V2, or the third control voltage V3.

Please refer to FIGS. 1 to 4 together. In one embodiment, the number of times the control circuit 120 receives the converted voltage is 3n+1, 3n+2, or 3n+3, where n is an integer greater than or equal to 0.

When the number of times that the control circuit 120 receives the converted voltage is 3n+1 times, the control circuit provides the first control voltage control voltage V1. When the number of times the control circuit 120 receives the converted voltage is 3n+2 times, the control circuit 120 provides the second control voltage control voltage V2. For example, when the number of times the control circuit 120 receives the switching voltage is 1, 4, 7,..., etc., the control circuit 120 provides the first control voltage control voltage V1, and when the number of times the control circuit 120 receives the switching voltage is 2 , 5, 8... etc., the control circuit 120 provides the second control voltage V2.

When the switching circuit 130 receives the first control voltage V1, the switching circuit 130 turns on the first output terminal 140. When the switching circuit 130 receives the second control voltage V2, the switching circuit 130 turns on the second output terminal 150.

When the number of times the control circuit 120 receives the converted voltage is 3n+3 times, the control circuit 120 provides the third control voltage V3. For example, when the number of times the control circuit 120 receives the converted voltage is 3, 6, 9,..., etc., the control circuit 120 provides the third control voltage V3. In addition, the third control voltage V3 is the combined output of the first control voltage V1 and the second control voltage V2 at the same time.

When the switching circuit 130 receives the third control voltage V3, the switching circuit 130 conducts the first output terminal 140 and the second output terminal 150.

Please refer to FIGS. 1 to 4 together. In one embodiment, the control circuit 120 includes a microcontroller U3, which is coupled to the memory 170, and the first voltage output terminal of the microcontroller U3 The GD1 and the second voltage output terminal GD2 provide the first control voltage V1, the second control voltage V2 or the third control voltage V3 according to the converted voltage.

When the number of times that the microcontroller U3 receives the switching voltage is 3n+1 times, the first voltage output terminal GD1 provides the first control voltage V1. When the number of times the microcontroller U3 receives the switching voltage is 3n+2 times, the second voltage output terminal GD2 provides the second control voltage V2. For example, when the number of times that the microcontroller U3 receives the converted voltage is 1, 4, 7,..., etc., the first voltage output terminal GD1 provides the first control voltage V1, and when the microcontroller U3 receives the converted voltage When the number of times is 2, 5, 8... etc., the second voltage output terminal GD2 provides the second control voltage V2.

When the number of times the microcontroller U3 receives the switching voltage is 3n+3 times, the first voltage output terminal GD1 provides the first control voltage V1, and the second voltage output terminal GD2 provides the second control voltage V2. For example, when the number of times the microcontroller U3 receives the converted voltage is 3, 6, 9... etc., the first voltage output terminal GD1 provides the first control voltage V1, and the second voltage output terminal GD2 provides the second Control voltage V2. In addition, when the first voltage output terminal GD1 and the second voltage output terminal GD2 of the microcontroller U3 simultaneously output the first control voltage V1 and the second control voltage V2, it represents that the microcontroller U3 outputs the first control voltage V1 and the second control voltage V1. The combination of the two control voltages V2, that is, the microcontroller U3 outputs the third control voltage V3.

It can be seen from the above implementation of this case that the application of this case has the following advantages. The control circuit 100 shown in the embodiment of the present case can be adapted to memorize the color temperature or brightness state of the light-emitting body before turning off, and it is not necessary to repeatedly switch the switch to reach the state before turning off.

After referring to the following implementation modes, those with ordinary knowledge in the technical field of this case can easily understand the basic spirit and other new goals of this case, as well as the technical means and implementation patterns adopted in this case.

Vin: power supply voltage 100: Drive device with memory function 110: Conversion circuit 120: control circuit 130: switching circuit 140: The first output 150: second output 160: Voltage divider circuit 170: memory L1: The first luminous body L2: second luminous body Vc: Conversion voltage V1: the first control voltage V2: second control voltage U4: Microcontroller O1, O2: output terminal R26: the first resistor R30: second resistor G: node CLK: detection terminal GD1: the first voltage output terminal GD2: second voltage output

In order to make the above and other objectives, features, advantages and embodiments of this case more comprehensible, the description of the attached drawings is as follows: FIG. 1 is a schematic diagram of a driving device with a memory function according to an embodiment of the present invention. FIG. 2 is a schematic diagram of a driving device with a memory function according to an embodiment of the present invention. FIG. 3 is a detailed circuit diagram of the conversion circuit of the driving device with memory function shown in FIG. 2 according to an embodiment of the present case. FIG. 4 is a detailed circuit diagram of a control circuit and a switching circuit of a driving device with a memory function shown in FIG. 2 according to an embodiment of the present case.

Vin: power supply voltage

100: Drive device with memory function

110: Conversion circuit

120: control circuit

130: switching circuit

140: The first output

150: second output

160: Voltage divider circuit

170: memory

L1: The first luminous body

L2: second luminous body

Claims (10)

Drive device with memory function, including: A conversion circuit for receiving a power supply voltage and providing a conversion voltage; A control circuit for providing a first control voltage, a second control voltage or a third control voltage according to the conversion voltage; A switching circuit for determining a conduction state of a first output terminal and a second output terminal according to the first control voltage, the second control voltage or the third control voltage; A voltage divider circuit for providing a memory signal according to the converted voltage; and A memory for storing the conduction state, and if a voltage of the memory signal is greater than a preset voltage, the control circuit is used for controlling the switching circuit so that the first output terminal and the second output terminal maintain the conduction state. The driving device according to claim 1, wherein the voltage divider circuit is coupled to the conversion circuit, and the voltage divider circuit is configured to receive the converted voltage and use at least two resistors of the voltage divider circuit to convert the voltage The voltage division is performed to generate the memory signal. The driving device according to claim 2, wherein the at least two resistors of the voltage divider circuit include: A first resistor, coupled to the conversion circuit, and used for receiving the conversion voltage; A second resistor is coupled to the first resistor at a node, wherein the first resistor and the second resistor divide the conversion voltage together to generate the memory signal from the node. The driving device according to claim 3, wherein the control circuit includes: A detection terminal is coupled to the memory, wherein the control circuit detects the memory signal stored in the memory through the detection terminal to determine whether to provide the first control voltage, the second control voltage or the first control voltage Three control voltage. The driving device according to claim 4, wherein the number of times the control circuit receives the conversion voltage is 3n+1, 3n+2, or 3n+3, where n is an integer greater than or equal to 0. The driving device according to claim 5, wherein when the number of times that the control circuit receives the conversion voltage is 3n+1 times, the control circuit provides the first control voltage; wherein when the control circuit receives the conversion voltage When the number of times is 3n+2 times, the control circuit provides the second control voltage; wherein when the switching circuit receives the first control voltage, the switching circuit turns on the first output terminal; wherein when the switching circuit receives the second control voltage When the voltage is controlled, the switching circuit turns on the second output terminal. The driving device according to claim 6, wherein when the number of times the control circuit receives the switching voltage is 3n+3 times, the control circuit provides the third control voltage; wherein when the switching circuit receives the third control voltage When the voltage is applied, the switching circuit conducts the first output terminal and the second output terminal. The driving device according to claim 5, wherein the control circuit includes: A microcontroller coupled to the memory, wherein a first voltage output terminal and a second voltage output terminal of the microcontroller provide the first control voltage, the second control voltage, or the The third control voltage. The driving device according to claim 8, wherein when the number of times that the microcontroller receives the conversion voltage is 3n+1 times, the first voltage output terminal provides the first control voltage; wherein when the microcontroller When the number of times of receiving the converted voltage is 3n+2 times, the second voltage output terminal provides the second control voltage. The driving device according to claim 9, wherein when the number of times that the microcontroller receives the conversion voltage is 3n+3 times, the first voltage output terminal provides the first control voltage, and the second voltage outputs Terminal provides the second control voltage.

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