CN209824087U

CN209824087U - Single IO port control circuit of two LED lamps with different colors

Info

Publication number: CN209824087U
Application number: CN201920191625.9U
Authority: CN
Inventors: 林建琰
Original assignee: Xiamen Xingzhuo Technology Co Ltd
Current assignee: Xiamen Xingzhuo Technology Co Ltd
Priority date: 2019-02-12
Filing date: 2019-02-12
Publication date: 2019-12-20
Anticipated expiration: 2029-02-12

Abstract

The utility model provides a single IO mouth control circuit of two different colours LED lamps, including singlechip IC, first colour LED lamp, second colour LED lamp, resistance R2 and resistance R3, the negative pole of first colour LED lamp with the positive pole of second colour LED lamp is connected to node one, the positive pole of first colour LED lamp with the negative pole connected node two of second colour LED lamp, an IO mouth among the singlechip IC is connected node one, and supply voltage passes through resistance R2 and resistance R3 partial pressure, the partial pressure node is connected node two. The utility model discloses a control that an IO mouth of multiplexing singlechip IC reaches two kinds of different colours LED lamps realizes multiple bright lamp mode, convenient operation, low cost.

Description

Single IO port control circuit of two LED lamps with different colors

Technical Field

The utility model relates to a control circuit structure of LED lamp through two different colours of IO mouth control.

Background

The price of the same parameter in the same factory of the single chip microcomputer in the current market is higher, for example, the price of the commonly used SOP16 package is more expensive than that of SOP 8. When the application of the actual singlechip is selected, one more I/O control is required when one more function is required, but the singlechip does not have redundant I/O. If the singlechip with more pins is replaced at the moment, the cost is increased to a great extent undoubtedly, and the operation process is still troublesome.

Disclosure of Invention

The to-be-solved technical problem of the utility model lies in providing a single IO mouth control circuit of two different colours LED lamps to reach the control of two kinds of different colours LED lamps through multiplexing an IO mouth, realize multiple bright lamp mode.

The utility model discloses a realize like this: the utility model provides a single IO mouth control circuit of two different colours LED lamps, includes singlechip IC, first colour LED lamp, second colour LED lamp, resistance R2 and resistance R3, the negative pole of first colour LED lamp with the positive pole of second colour LED lamp is connected to node one, the positive pole of first colour LED lamp with the negative pole connected node two of second colour LED lamp, an IO mouth in the singlechip IC is connected node one, and supply voltage passes through resistance R2 and resistance R3 partial pressure, the partial pressure nodal connection node two.

And the IO port outputs a low level and a high impedance state of 1HZ frequency.

High level and high impedance state of the 1HZ frequency.

The IO port outputs high and low levels with frequency more than or equal to 100HZ, the duration is 0.5S, and then the high impedance state of 0.5S is output.

The utility model has the advantages that: one I/O can be reused to control the LED lamps with two colors so as to realize the functions of lighting multiple lamps, the I/O ports are reduced, the pin positions of the single chip microcomputer are reduced, the space occupation of a PCB is reduced, and the cost is reduced; in addition, because more pins are not required to be replaced, the singlechip with larger encapsulation is selected, and the trouble of replacement operation is also reduced.

Drawings

The invention will be further described with reference to the following examples with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of the control circuit of the present invention.

Fig. 2 is a waveform diagram of a cycle of the control circuit of the present invention in a control mode.

Detailed Description

Please refer to fig. 1, the utility model discloses a single IO mouth control circuit of two different colours LED lamps, including singlechip IC, first colour LED lamp 1, second colour LED lamp 2, resistance R2 and resistance R3, the negative pole of first colour LED lamp 1 with the positive pole of second colour LED lamp 2 is connected to node one (fig. 1 is marked as A), the positive pole of first colour LED lamp 1 with the negative pole of second colour LED lamp 2 is connected node two (fig. 1 is marked as B), an IO mouth in the singlechip IC is connected node one, and supply voltage passes through resistance R2 and resistance R3 partial pressure, the partial pressure node is connected node two.

If first colour LED lamp 1 is the red light, when second colour LED lamp 2 is the green light, the utility model discloses a control circuit has following six kinds of control mode: 1. the red light flashes singly, 2 flashes singly in the green light, 3 flashes simultaneously in the red and the green, 4 flashes alternately in the red and the green, 5 flashes normally in the red, and 6 flashes normally in the green.

As shown in fig. 1, the IO port of the single chip IC takes the multiplexing PIN6 and the supply voltage as 5V as an example, and the following details describe the above six control modes:

(1) red light single flashing, realization mode: and the PIN6 of the singlechip IC outputs a low level and a high resistance state of 1HZ frequency. When the output of the singlechip is at a low level of 0.5HZ, the voltage of the red light is 5R 3/(R2+ R3), the red light is turned on by adjusting the resistance values of R2 and R3, and the green light is turned off because the direction is opposite to that of the red light. Then 0.5HZ high impedance state is output, at this moment, the first node is equivalent to disconnection, and the red light and the green light are simultaneously extinguished. When the frequency of 1HZ is signaled from PIN6 all the way to the point where the red light flashes at a frequency of 1 HZ.

(2) Green light single flashing, implementation: the single chip microcomputer IC PIN6 only needs to output high level and high resistance state of 1HZ frequency. When the output of the single chip microcomputer is at a high level of 0.5HZ, the voltage of the green lamp is 5-5R 3/(R2+ R3), the green lamp is turned on by adjusting the resistance values of R2 and R3, and the red lamp is turned off in the opposite direction of the green lamp. Then 0.5HZ high impedance state is output, at this moment, the first node is equivalent to disconnection, and the red light and the green light are simultaneously extinguished. When the frequency of 1HZ is signaled from PIN6 all the way to the green light, the single flash at the frequency of 1HZ is reached.

(3) Red and green flash simultaneously, the realization method is as follows: the single chip microcomputer IC PIN6 outputs high and low levels with frequency more than or equal to 100HZ, the duration is 0.5S, and then the high impedance state of 0.5S is output. As shown in fig. 2, in one period, when the PIN6 outputs high and low levels with frequency of 100HZ and duration of 0.5S, the red light and the green light are alternately flashed electronically, but due to inertia of human eyes (human eyes theoretically see flashing lights with frequency over 100HZ, and the phenomenon is seen as normal bright), the human eyes see normal bright with frequency of 0.5S; the next high impedance state of 0.5S, red and green lights are off simultaneously. Thereby realizing the simultaneous flashing of red and green.

(4) Red and green alternately flashes, and the implementation mode is as follows: the single chip microcomputer IC PIN6 only needs to output high and low levels of 1HZ frequency. And (3) integrating the control modes (1) and (2) to output 0.5HZ high-level green light and 0.5HZ low-level red light.

(5) The red light is normally on, and the implementation mode is as follows: the singlechip IC PIN6 can output low level continuously.

(6) The green light is always on, and the implementation mode is as follows: the singlechip IC PIN6 can output high level continuously.

Therefore, the LED lamps with two colors are controlled through one IO port of the multiplexing single chip microcomputer IC, six control modes can be realized, and the LED lamp control system is convenient, flexible and low in cost.

Although specific embodiments of the present invention have been described, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the claims appended hereto.

Claims

1. The utility model provides a single IO mouth control circuit of two different colours LED lamps which characterized in that: including singlechip IC, first colour LED lamp, second colour LED lamp, resistance R2 and resistance R3, the negative pole of first colour LED lamp with the positive pole of second colour LED lamp is connected to node one, the positive pole of first colour LED lamp with node two is connected to the negative pole of second colour LED lamp, and an IO mouth in the singlechip IC is connected node one, and supply voltage passes through resistance R2 and resistance R3 partial pressure, the partial pressure node is connected node two.

2. The single IO port control circuit of two different color LED lamps of claim 1, wherein: and the IO port outputs a low level and a high impedance state of 1HZ frequency.

3. The single IO port control circuit for two LED lamps of different colors according to claim 2, wherein: high level and high impedance state of the 1HZ frequency.

4. The single IO port control circuit of two different color LED lamps of claim 1, wherein: the IO port outputs high and low levels with frequency more than or equal to 100HZ, the duration is 0.5S, and then the high impedance state of 0.5S is output.

5. The single IO port control circuit of two different color LED lamps of claim 1, wherein: and the IO port outputs high and low levels of 1HZ frequency.

6. The single IO port control circuit of two different color LED lamps of claim 1, wherein: and the IO port continuously outputs low level.

7. The single IO port control circuit of two different color LED lamps of claim 1, wherein: and the IO port continuously outputs high level.