Data line fantasy lamp circuit structure

Abstract

The utility model discloses a data line fantasy color lamp circuit structure, a circuit board is provided with an LED lamp and a control circuit, the control circuit comprises a master control and power supply circuit and an LED light emitting circuit, and the master control and power supply circuit comprises a master control chip U2; the number of the LED lamps is at least three, and the LED lamps are connected in series. A V + pin of the main control chip U2 is connected with an input power supply VBUS, a P02 pin of the main control chip U2 is connected with a resistor R2, and a receiving end of the LED lamp is connected with the main control chip U2 through the resistor R2; a diode D2 is connected between a VVD pin and a GND pin of the main control chip U2; the LED light-emitting circuit adopts a voltage stabilizing chip U1 to carry out voltage stabilization on an input power supply VBUS and then outputs the voltage to each LED lamp. Therefore, the LED lamp can be controlled to display different light effects during charging, the data line is more attractive and fashionable during charging, and the light effect is better. The circuit is simpler and more reasonable, and elements such as the control chip can be effectively prevented from being damaged by static high voltage and current backflow.

Description

TECHNICAL FIELD

[0001] The utility model relates to data line device technical field especially relates to a kind of circuit structure mainly for practical data line rainbow running marquee light effect. BACKGROUND

[0002] At present, data line is the main tool for charging electronic equipment (such as smart phone etc.), and it is not very convenient to use data line in dark environment due to no light indication in tradition. Therefore, someone designs data line with light indication to solve the above problems, but the indicator light of the current data line with light indication is very small, and it is usually single, which is not helpful to improve the aesthetics of data line charging. Therefore, people have invented data line with breathing light and running marquee light effect, but the existing such data line still has the following problems: first, the number of breathing light is small, and the light effect is not good enough; second, running marquee light is generally set on wire, which has complex structure and high cost, and high failure rate; third, the control circuit of running marquee light is relatively complex, which will further increase the failure rate, such as main control chip being damaged due to high voltage static electricity, current backflow and other factors. SUMMARY

[0003] The utility model provides a kind of circuit structure more simply to the defects of prior art, light display effect is better, light can produce running marquee light effect when charging, it is more beautiful and fashionable, and not easy to damage data line rainbow light circuit structure.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme: a kind of data line rainbow light circuit structure is provided with LED lamp and control circuit on the circuit board of data line connector, the control circuit includes main control and power supply circuit and LED light emitting circuit, the main control and power supply circuit includes main control chip U2 and charging connector, and is characterized by: the LED lamp includes at least three, the color of each LED lamp can be same or different, and each LED lamp is connected in series;The V+ pin of main control chip U2 is connected with input power supply VBUS, the P02 pin of main control chip U2 is connected with resistance R2, and the receiving end of LED lamp is connected with main control chip U2 through resistance R2;Diode D2 is connected between the VVD pin and GND pin of main control chip U2, and diode D2 adopts ESD tube;LED light emitting circuit adopts voltage stabilizing chip U1 to output each LED lamp after voltage stabilizing input power supply VBUS.

[0005] Further, the DI pin of each LED lamp is connected with the DO pin of one LED lamp to form the structure of receiving data upward and sending data downward, the DI pin of the first LED lamp is connected with the P02 pin of main control chip U2 through resistance R2, and the DO pin of the last LED lamp is suspended.

[0006] Further, the input power supply VBUS is connected to the V+ pin of the main control chip U2 through the forward conduction of the diode D1 and the current limiting protection of the resistor R3 to provide a 5-20V voltage.

[0007] Further, the V+ pin of the main control chip U2 is connected with a transient suppression diode D3, the positive terminal of the transient suppression diode D3 is grounded, the transient suppression diode D3 is a TVS tube, and a capacitor C14 is connected across the transient suppression diode D3.

[0008] Further, the input power supply VBUS is input to the diode D1 through the ground voltage dividing circuit composed of the resistor R5 and the resistor R6, and the parallel point of the resistor R5 and the resistor R6 is connected to the P05 pin of the main control chip U2.

[0009] Further, the filter capacitors are connected across the steady voltage chip U1 and each LED lamp.

[0010] Preferably, the model of the main control chip U2 is EN10PM, and the model of the steady voltage chip U1 is PJ78M05SQ.

[0011] Preferably, 6-12 LED lamps are arranged on the circuit board, and the model of the LED lamp is 1615.

[0012] Further, the current limiting resistor R1 is arranged in front of the steady voltage chip U1, and the input power supply VBUS is input to the steady voltage chip U1 after being current limited by the resistor R1.

[0013] Preferably, each LED lamp is arranged in a circle or an ellipse on the circuit board.

[0014] The utility model discloses a plurality of LED lamps are arranged on the connector of the data line, and a special circuit is equipped to control the LED lamp to show different light effects (fantasy color gallop) when charging, which not only makes the data line more beautiful and fashionable when charging and has better light effect, but also has simpler and more reasonable circuit structure, and the ESD tube arranged in the main control circuit can effectively prevent the main control chip and other elements from being damaged by static high voltage, and the voltage dividing resistor arranged in the main control chip can effectively prevent the main control chip from being damaged by the reverse flow of current, thereby improving the reliability of the circuit. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the main control and power supply circuit principle diagram of the utility model;

[0016] Figure 2 It is the LED light emitting module circuit principle diagram of the utility model;

[0017] Figure 3 It is the arrangement schematic view of the LED on the connector of the data line.

[0018] Figure 3 In the figure, 1 is a circuit board, and 2 is an LED lamp. DETAILED DESCRIPTION

[0019] In this embodiment, referring to Figure 1 , Figure 2 and Figure 3 , the data line fantasy lamp circuit structure is provided with the LED lamp 2 and a control circuit on the circuit board 1 of the data line joint, the control circuit includes a main control and power supply circuit and an LED light emitting circuit, the main control and power supply circuit includes a main control chip U2 and a charging joint; the LED lamp includes 10 (at least three), namely LED1-LED10, the colors of each LED lamp are different, and the LED lamps are connected in series; the V+ pin of the main control chip U2 is connected with an input power supply VBUS, the P02 pin of the main control chip U2 is connected with a resistor R2, and the receiving end of the LED lamp is connected with the main control chip U2 through the resistor R2; a diode D2 is connected between the VVD pin and the GND pin of the main control chip U2, and the diode D2 is an ESD tube; the LED light emitting circuit adopts a voltage stabilizing chip U1 to output to each LED lamp after voltage stabilization of the input power supply VBUS.

[0020] The DI pin of each LED lamp is connected with the DO pin of an LED lamp above to form a structure of receiving data upward and sending data downward, the DI pin of the first LED lamp is connected with the P02 pin of the main control chip U2 through the resistor R2, and the DO pin of the last LED lamp is suspended.

[0021] The input power supply VBUS provides 5-20V voltage for the V+ pin of the main control chip U2 after the diode D1 is forward conducted and the resistor R3 is current limiting protection.

[0022] The V+ pin of the main control chip U2 is connected with a transient suppression diode D3, the positive terminal of the transient suppression diode D3 is grounded, the transient suppression diode D3 is a TVS tube, and a capacitor C14 is connected across the transient suppression diode D3 for filtering.

[0023] The input power supply VBUS is input to the diode D1 after passing through a grounding voltage division circuit composed of the resistor R5 and the resistor R6, and the parallel point of the resistor R5 and the resistor R6 is connected with the P05 pin of the main control chip U2.

[0024] The filter capacitors are connected across the voltage stabilizing chip U1 and each LED lamp.

[0025] The model of the main control chip U2 is EN10PM, the model of the voltage stabilizing chip U1 is PJ78M05SQ, and the model of the LED lamp 2 is 1615.

[0026] A current limiting resistor R1 is arranged in front of the voltage stabilizing chip U1, and the input power supply VBUS is input to the voltage stabilizing chip U1 after current limiting by the resistor R1.

[0027] Each LED lamp is arranged in a circle or ellipse on the circuit board, and can also be arranged in other shapes, such as a triangle, a square, a star, etc.

[0028] Working principle:

[0029] 1. Main control power supply

[0030] The charging line is connected to the charging head, and J1 is connected to the setting. The charging head starts to supply power VBUS to the charging line J2. The input power VBUS provides a 5-20V voltage to the 4th pin of the main control chip U2 after being forwardly conducted by the diode D1 and being current-limited by the resistor R3. When a surge phenomenon occurs in the circuit, the power terminal VCC is connected to the ground terminal GNDA through the transient voltage suppression diode D3 (TVS). The transient voltage suppression diode D3 (TVS) can instantaneously withstand an excessively high voltage, and changes from high impedance to low impedance to clamp the voltage to a normal level, effectively protecting the main control chip U2 and other components from damage caused by surge pulses. The 7th pin of the main control chip outputs a 5.0V voltage. The one end of the capacitor C14 and the one end of the capacitor C18 are respectively connected to the input power and the output power, and the other end of the capacitor C14 and the other end of the capacitor C18 are respectively connected to the ground, which plays a power filtering role. The diode D2 is an ESD tube, which can effectively protect the main control chip U2 and other components from damage caused by high static voltage.

[0031] 2. LED lamp power supply and communication

[0032] The input power VBUS is current-limited by the resistor R1, and then is output to each LED lamp by the voltage stabilizing chip U1. The one end of the capacitor C1 and the one end of the capacitor C2 are respectively connected to the input power and the output power, and the other end of the capacitor C1 and the other end of the capacitor C2 are respectively connected to the ground, which plays a power filtering role. The capacitors C3-C12 are filter capacitors of each LED lamp. The LED1-LED10 receive data upward through the 4th pin of each LED lamp and send data downward through the 1st pin of each LED lamp. The LED1 receives 10 groups of data sent by the 1st pin of the main control chip U2, and sends 9 groups of data downward. The LED2 receives 9 groups of data sent by the LED1, and sends 8 groups of data downward, and so on. The LED10 receives 1 group of data sent by the LED9, forming a complete communication process.

[0033] 3. Main control detection voltage and control communication

[0034] The power supply is divided by the resistors R5 and R6, and the 4th pin of the main control chip U2 detects the divided voltage of the resistors R5 and R6. As the power supply voltage rises, the divided voltage also rises. According to the changed divided voltage, the 1st pin of the main control chip U2 outputs different 10 groups of communication data to drive the LED1-LED10 to display the corresponding state. The resistor R2 is connected to the 1st pin of the main control chip U2 and the 4th pin of the LED1. Since the IO voltage of the main control chip U2 and the LED1 is not consistent, the resistor R2 can effectively prevent the problem of current backflow causing chip damage.

[0035] As a display mode, the data line access equipment starts the colorful galloping mode after being charged: 5V is red, orange, white, blue, green cycle galloping, the cycle is 2S. 7V above is red, orange, white, blue, green cycle galloping, the cycle is 1S.

[0036] The utility model has been described in detail above, the above-mentioned, only for the preferred embodiment of the utility model, when cannot limit the utility model implementation range, namely all equal changes and modifications made according to the scope of the present application should still belong to the utility model coverage.

Claims

1. A data line fantasy lamp circuit structure, LED lamp and control circuit are arranged on the circuit board of data line joint, the control circuit includes main control and power supply circuit and LED light emitting circuit, the main control and power supply circuit includes main control chip U2 and charging joint, characterized in that: The LED lamp comprises at least three LED lamps connected in series; a V+ pin of a main control chip U2 is connected with an input power supply VBUS; a P02 pin of the main control chip U2 is connected with a resistor R2; a receiving end of the LED lamp is connected with the main control chip U2 through the resistor R2; a VVD pin and a GND pin of the main control chip U2 are connected with a diode D2, and the diode D2 is an ESD diode; a LED light emitting circuit adopts a voltage stabilizing chip U1 to stabilize the input power supply VBUS and then output to each LED lamp. ​ 2. The data line neon lamp circuit structure according to claim 1, characterized in that: A DI pin of each LED lamp is connected with a DO pin of an upper LED lamp to form a structure of receiving data upward and sending data downward; a DI pin of a first LED lamp is connected with a P02 pin of the main control chip U2 through a resistor R2; and a DO pin of a last LED lamp is left floating.

3. The data line neon lamp circuit structure according to claim 1, characterized in that: The input power supply VBUS is connected with a diode D1 in a forward direction, and then is connected with a resistor R3 for current limiting protection, and then provides a 5-20V voltage for a V+ pin of the main control chip U2.

4. The data line neon lamp circuit structure according to claim 3, characterized in that: The V+ pin of the main control chip U2 is connected with a transient voltage suppression diode D3, a positive terminal of the transient voltage suppression diode D3 is connected with ground, the transient voltage suppression diode D3 is a TVS diode, and a capacitor C14 is connected across the transient voltage suppression diode D3.

5. The data line neon lamp circuit structure according to claim 3, characterized in that: The input power supply VBUS is input to the diode D1 through a grounding voltage dividing circuit composed of a resistor R5 and a resistor R6, and a parallel point of the resistor R5 and the resistor R6 is connected with a P05 pin of the main control chip U2.

6. The data line neon lamp circuit structure according to claim 1, characterized in that: A filter capacitor is connected across the voltage stabilizing chip U1 and each LED lamp.

7. The data line neon lamp circuit structure according to any one of claims 1-6, characterized in that: The main control chip U2 is an EN10PM, and the voltage stabilizing chip U1 is a PJ78M05SQ.

8. The data line neon lamp circuit structure according to claim 7, characterized in that: Six to twelve LED lamps are arranged on the circuit board, and the LED lamp is a 1615.

9. The data line neon lamp circuit structure according to claim 7, characterized in that: A current limiting resistor R1 is arranged in front of the voltage stabilizing chip U1, and the input power supply VBUS is input to the voltage stabilizing chip U1 after current limiting through the resistor R1.

10. The data line neon lamp circuit structure according to claim 8, characterized in that: Each LED lamp is arranged around a circle or an ellipse on the circuit board.

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