阅读说明：本技术 一种具有故障诊断诊断功能的rgb氛围灯电路 (RGB atmosphere lamp circuit with fault diagnosis and diagnosis functions ) 是由 葛双军 汪胜凯 苏琳杰 王璐坤 葛双红 于 2021-08-24 设计创作，主要内容包括：本发明公开了一种具有故障诊断诊断功能的RGB氛围灯电路,包括控制检测单元、恒流驱动单元、温度诊断单元和高亮度RGB灯,控制检测单元与恒流驱动单元相接,用于驱动控制恒流驱动单元,控制检测单元的输入端与温度诊断单元相接,用于温度诊断的信息,恒流驱动单元的输出端与温度诊断单元相接。本具有故障诊断诊断功能的RGB氛围灯电路,单通道电流最高可达150mA电流,Red、Green,Blue三通道总电流最高可到450mA,填补车内内饰氛围灯行业目前高亮度氛围灯应用的空白；通过全面的诊断系统,解决了高亮度RGB电路的诊断问题,为高亮度RGB氛围灯产业化发展扫清了障碍。(The invention discloses an RGB atmosphere lamp circuit with a fault diagnosis function, which comprises a control detection unit, a constant current driving unit, a temperature diagnosis unit and a high-brightness RGB lamp, wherein the control detection unit is connected with the constant current driving unit and used for driving and controlling the constant current driving unit, the input end of the control detection unit is connected with the temperature diagnosis unit and used for temperature diagnosis information, and the output end of the constant current driving unit is connected with the temperature diagnosis unit. According to the RGB atmosphere lamp circuit with the fault diagnosis function, the single-channel current can reach 150mA at most, the total current of Red, Green and Blue channels can reach 450mA at most, and the blank of the current high-brightness atmosphere lamp in the interior trim atmosphere lamp industry is filled; the diagnosis problem of the high-brightness RGB circuit is solved through a comprehensive diagnosis system, and obstacles are cleared for the industrial development of the high-brightness RGB atmosphere lamp.)

1. The RGB atmosphere lamp circuit with the fault diagnosis function is characterized by comprising a control detection unit (1), a constant current driving unit (2), a temperature diagnosis unit (3) and a high-brightness RGB lamp (4), wherein the control detection unit (1) is connected with the constant current driving unit (2) and used for driving and controlling the constant current driving unit (2), the input end of the control detection unit (1) is connected with the temperature diagnosis unit (3) and used for temperature diagnosis information, the output end of the constant current driving unit (2) is connected with the temperature diagnosis unit (3) and outputs a constant current to the temperature diagnosis unit (3), and the output end of the temperature diagnosis unit (3) is connected with the high-brightness RGB lamp (4).

2. The RGB ambient light circuit with fault diagnosis and diagnosis functions, according to claim 1, is characterized in that: the control detection unit (1) carries out interactive communication with the outside and reports the diagnosis state at the same time, outputs PWM signals for controlling RGB color and brightness, and simultaneously realizes diagnosis of the output PWM control signals according to the constant current driving unit (2), and diagnosis detection processing is carried out in the control detection unit (1);

in the control detection unit (1), a pin 1 and a pin 2 of a chip U1 are connected with a parallel point of an interface J2, a resistor R12 and a resistor R13, a resistor R12 and a resistor R13 are connected with a constant current driving unit (2), a pin 3 of a chip U1 is connected with a parallel point of a resistor R11 and a collector of a triode Q1, a pin 27 of a chip U1 is connected with a pin 3 of an interface J2, a pin 28 of a chip U1 is connected with a parallel point of a bidirectional voltage stabilizing diode D2, a capacitor C2 and a pin 2 of the interface J2, the other end of the capacitor C2 is connected with a series capacitor C2, the other end of the bidirectional voltage stabilizing diode D2 is connected with a pin 4 of the interface J2, the other end of the bidirectional voltage stabilizing diode D2 is connected with a port 1 of the interface J2 in parallel with an anode of the diode D2, a cathode of the diode D2 is connected with a pin 16, the capacitor C2 and a parallel point of the capacitor C2 and the drive unit (2), the constant current driving unit (R2) is connected with a series capacitor R366 and the constant current driving unit (2), the pins 21, 22 and 23 are connected to the temperature diagnosis unit (3).

3. The RGB ambient light circuit with fault diagnosis and diagnosis functions, according to claim 1, is characterized in that: the constant current driving unit (2) outputs constant current according to the PWM signal input by the control detection unit (1), and directly drives the high-brightness RGB lamp (4) through the temperature diagnosis unit (3), and the constant current driving unit (2) is used for diagnosing the short circuit from the PWM input to the ground, outputting the constant current open circuit, internal temperature and power supply low voltage, and outputting the related diagnosis to the control detection unit (1);

a pin 9 of a chip U2 in the constant current driving unit (2) is connected with a base electrode of a triode Q1, a pin 11 of a chip U2 is connected with a resistor R9 and a resistor R10 in series and a pin 10 in parallel and is respectively connected with a temperature diagnosis unit (3) and a high-brightness RGB lamp (4), a pin 13 of a chip U2 is connected with a resistor R7 and a resistor R8 in series and is connected with the temperature diagnosis unit (3) and the high-brightness RGB lamp (4), and a pin 15 of the chip U2 is connected with a pin 14 of a resistor R5 and a resistor R6 in series and is connected with the temperature diagnosis unit (3) and the high-brightness RGB lamp (4).

4. The RGB ambient light circuit with fault diagnosis and diagnosis functions, according to claim 1, is characterized in that: the temperature diagnosis unit (3) is connected to the detection end by tapping a precise high-power low-resistance resistor at the constant current end for RGB, and realizes real-time temperature detection according to different voltage values of the high-brightness RGB lamp (4) in different temperature states and according to temperature and voltage performance parameters of three different channel lamps of the RGB atmosphere lamp;

a capacitor C7 of the temperature diagnosis unit (3) is connected with a parallel point of a resistor R6, a pin 14 of a chip U2, a pin 21 of a chip U1 and a pin 6 of the high-brightness RGB lamp (4), a capacitor C8 is connected with a parallel point of a resistor R8, a pin 12 of a chip U2, a pin 22 of a chip U1 and a pin 7 of the high-brightness RGB lamp (4), and a capacitor C9 is connected with a resistor R10, a pin 10 of a chip U2, a pin 23 of a chip U1 and a pin 9 of the high-brightness RGB lamp (4) in parallel.

5. The RGB ambient light circuit with fault diagnosis and diagnosis functions, according to claim 1, is characterized in that: the high-brightness RGB lamp (4) feeds the respective temperature states of Red, Green and Blue channels back to the control detection unit (1) in a voltage mode, the control detection unit (1) diagnoses the temperature of the Red, Green and Blue lamps of the high-brightness RGB lamp (4) at present by detecting different voltage values, control compensation is realized according to different temperatures, and 150mA current is output by pins 6, 7 and 9 of the high-brightness RGB lamp (4).

Technical Field

The invention relates to a high-brightness RGB atmosphere lamp circuit, in particular to an RGB atmosphere lamp circuit with a fault diagnosis function.

Background

The requirements of the automotive interior backlight and the atmosphere lamp thereof on color and brightness consistency are high, so the difficulty of the application of the RGB automotive atmosphere lamp is concentrated on the aspect of controlling the color consistency. The color consistency of the RGB automobile atmosphere lamp based on temperature detection feedback is discussed.

The RGB atmosphere lamp comprises 3 chips, namely a red chip, a green chip and a blue chip, and the color and the brightness of the RGB atmosphere lamp can be adjusted through duty ratios of currents flowing through the red chip, the green chip and the blue chip. In addition, the RGB atmosphere lamp also comprises a memory in the RGB atmosphere lamp.

However, the RGB atmosphere lamp has many faults, and how to quickly troubleshoot the RGB atmosphere lamp is a problem to be solved in the prior art.

Disclosure of Invention

The present invention is directed to an RGB atmosphere lamp circuit having a fault diagnosis function, which has advantages to solve the problems of the background art mentioned above.

In order to achieve the purpose, the invention provides the following technical scheme: an RGB atmosphere lamp circuit with a fault diagnosis function comprises a control detection unit 1, a constant current driving unit 2, a temperature diagnosis unit 3 and a high-brightness RGB lamp 4, wherein the control detection unit 1 is connected with the constant current driving unit 2 and used for driving and controlling the constant current driving unit 2, the input end of the control detection unit 1 is connected with the temperature diagnosis unit 3 and used for temperature diagnosis information, the output end of the constant current driving unit 2 is connected with the temperature diagnosis unit 3 and outputs a constant current to the temperature diagnosis unit 3, and the output end of the temperature diagnosis unit 3 is connected with the high-brightness RGB lamp 4.

Further, the control detection unit 1 carries out interactive communication with the outside and reports the diagnosis state, outputs PWM signals for controlling RGB color and brightness, and simultaneously realizes diagnosis of the output PWM control signals according to the constant current driving unit 2, and diagnosis detection processing is carried out in the control detection unit 1;

in the control detection unit 1, a pin 1 and a pin 2 of a chip U1 are connected with a parallel point of an interface J2, a resistor R12 and a resistor R13, a resistor R12 and a resistor R13 are connected with a constant current driving unit 2, a pin 3 of a chip U1 is connected with a parallel point of a resistor R11 and a collector of a triode Q1, a pin 27 of a chip U1 is connected with an end pin 3 of an interface J2, a pin 28 of a chip U1 is connected with a parallel point of a bidirectional voltage stabilizing diode D2, a capacitor C2 and an end pin 2 of the interface J2, a series capacitor C2 at the other end of the capacitor C2 is connected with an end pin 4 of the interface J2 in parallel, the other end of the bidirectional voltage stabilizing diode D2 is connected with the port 1 of the interface J2 in parallel with an anode of the diode D2, a cathode of the diode D2 is connected with a pin 16, a parallel point of the capacitor C2 and a ground pin 366 of the constant current driving unit 2 and the constant current driving unit 366, pins 21, 22 and 23 are connected to the temperature diagnostic unit 3.

Further, the constant current driving unit 2 outputs a constant current according to the PWM signal input by the control detection unit 1, and directly drives the high brightness RGB lamp 4 through the temperature diagnosis unit 3, and the constant current driving unit 2 is used for PWM input to ground short circuit diagnosis, output constant current drive to ground short circuit diagnosis, output constant current open circuit diagnosis, internal temperature diagnosis, power supply low voltage diagnosis, and output related diagnosis states to the control detection unit 1;

the pin 9 of the chip U2 in the constant current driving unit 2 is connected with the base of the triode Q1, the pin 11 series resistor R9 and the resistor R10 of the chip U2 are connected with the pin 10 in parallel and are respectively connected with the temperature diagnosis unit 3 and the high-brightness RGB lamp 4, the pin 13 series resistor R7 and the resistor R8 of the chip U2 are connected with the temperature diagnosis unit 3 and the high-brightness RGB lamp 4, and the pin 15 and the pin 14 series resistor R5 and the resistor R6 of the chip U2 are connected with the temperature diagnosis unit 3 and the high-brightness RGB lamp 4.

Furthermore, the temperature diagnosis unit 3 is connected to the detection end by tapping a precise high-power low-resistance resistor at the constant current end for RGB, and realizes real-time temperature detection according to different voltage values of the high-brightness RGB lamp 4 in different temperature states and according to temperature and voltage performance parameters of three different channel lamps of the RGB atmosphere lamp;

the capacitor C7 of the temperature diagnosis unit 3 is connected to a parallel point where the resistor R6, the pin 14 of the chip U2, the pin 21 of the chip U1 and the pin 6 of the high-luminance RGB lamp 4 are connected in parallel, the capacitor C8 is connected to a parallel point where the resistor R8, the pin 12 of the chip U2, the pin 22 of the chip U1 and the pin 7 of the high-luminance RGB lamp 4 are connected in parallel, and the capacitor C9 is connected to the resistor R10, the pin 10 of the chip U2, the pin 23 of the chip U1 and the pin 9 of the high-luminance RGB lamp 4 are connected in parallel.

Further, the high-brightness RGB lamp 4 feeds back the respective temperature states of Red, Green and Blue channels to the control detection unit 1 in a voltage form, the control detection unit 1 diagnoses the temperature of the Red, Green and Blue lamps of the high-brightness RGB lamp 4 by detecting different voltage values, meanwhile, the control compensation is realized according to different temperatures, and pins 6, 7 and 9 of the high-brightness RGB lamp 4 all output 150mA current.

Compared with the prior art, the invention has the beneficial effects that:

this RGB atmosphere lamp circuit with failure diagnosis diagnostic function, the temperature diagnosis unit is through exporting the accurate high power low resistance access detection end of shunting for RGB constant current end, according to the different voltage value under the different temperature state of high brightness RGB lamp, and realize temperature real-time detection according to the temperature voltage performance parameter of the three different passageway lamps of RGB atmosphere lamp, the respective temperature state of Red, Green, Blue three passageway is fed back to control detecting element with the voltage form to high brightness RGB lamp, control detecting element diagnoses the temperature of the current Red of high brightness RGB lamp, Green, Blue three lamp through detecting different voltage value, realize control compensation according to different temperatures simultaneously.

Pins 6, 7 and 9 of the high-brightness RGB lamp all output 150mA currents, the high-brightness RGB lamp with fault diagnosis is realized by controlling the detection unit, the constant current driving unit and the temperature diagnosis unit, the single-channel current can reach 150mA current at most, the Red, Green and Blue three-channel total current can reach 450mA at most, and the blank of the current high-brightness atmosphere lamp in the interior trim atmosphere lamp industry is filled; the problems of temperature drift and color difference lamps are effectively solved while high brightness is realized; the high-brightness RGB lamp can still realize stable color and brightness under the condition that the temperature of the high-brightness RGB lamp is 100 ℃, the color drift phenomenon caused by overhigh heating temperature of the RGB atmosphere lamp body is effectively solved, the diagnosis problem of a high-brightness RGB circuit is solved through a comprehensive diagnosis system, and obstacles are cleared for the industrial development of the high-brightness RGB atmosphere lamp.

Drawings

FIG. 1 is a block diagram of the present invention;

fig. 2 is a circuit schematic of the present invention.

In the figure: 1. a control detection unit; 2. a constant current driving unit; 3. a temperature diagnosis unit; 4. high brightness RGB lamps.

Detailed Description

The technical scheme in the embodiment of the invention will be made clear below by combining the attached drawings in the embodiment of the invention; fully described, it is to be understood that the described embodiments are merely exemplary of some, but not all, embodiments of the invention and that all other embodiments, which can be derived by one of ordinary skill in the art based on the described embodiments without inventive faculty, are within the scope of the invention.

Referring to fig. 1, an RGB atmosphere lamp circuit with a fault diagnosis function includes a control detection unit 1, a constant current driving unit 2, a temperature diagnosis unit 3, and a high-luminance RGB lamp 4, where the control detection unit 1 is connected to the constant current driving unit 2 for driving and controlling the constant current driving unit 2, an input end of the control detection unit 1 is connected to the temperature diagnosis unit 3 for temperature diagnosis information, an output end of the constant current driving unit 2 is connected to the temperature diagnosis unit 3 for outputting a constant current to the temperature diagnosis unit 3, and an output end of the temperature diagnosis unit 3 is connected to the high-luminance RGB lamp 4.

Referring to fig. 2, the control detection unit 1 performs interactive communication with the outside, reports a diagnosis state, outputs PWM signals for controlling RGB colors and brightness, and diagnoses the output PWM control signals according to the constant current driving unit 2, wherein the diagnosis detection process is performed in the control detection unit 1;

the constant current driving unit 2 outputs a constant current according to the PWM signal input by the control detection unit 1, and directly drives the high brightness RGB lamp 4 through the temperature diagnosis unit 3, and the constant current driving unit 2 is used for PWM input to ground short circuit diagnosis, output constant current drive to ground short circuit diagnosis, output constant current open circuit diagnosis, internal temperature diagnosis, power supply low voltage diagnosis related diagnosis, and output related diagnosis states to the control detection unit 1. The diagnosis implementation method of the PWM comprises the steps of detecting PWM states in real time through a timer, wherein the PWM states comprise PWM related diagnoses such as cycle jump, high and low level states and the like;

the temperature diagnosis unit 3 is connected to the detection end by tapping a precise high-power low-resistance resistor at the constant current end for outputting to the RGB, realizes real-time temperature detection according to different voltage values of the high-brightness RGB lamp 4 in different temperature states and according to temperature and voltage performance parameters of three different channel lamps of the RGB atmosphere lamp

The high-brightness RGB lamp 4 feeds the respective temperature states of the Red channel, the Green channel and the Blue channel back to the control detection unit 1 in a voltage mode, the control detection unit 1 diagnoses the temperature of the Red channel, the Green channel and the Blue channel of the high-brightness RGB lamp 4 by detecting different voltage values, and meanwhile, control compensation is achieved according to different temperatures.

In the control detection unit 1, a pin 1 and a pin 2 of a chip U1 are connected with a parallel point of an interface J2, a resistor R12 and a resistor R13, a resistor R12 and a resistor R13 are connected with a constant current driving unit 2, a pin 3 of a chip U1 is connected with a parallel point of a resistor R11 and a collector of a triode Q1, a pin 27 of a chip U1 is connected with a pin 3 of an interface J2, a pin 28 of a chip U1 is connected with a parallel point of a bidirectional voltage stabilizing diode D2, a capacitor C2 and a pin 2 of the interface J2, the other end of the bidirectional voltage stabilizing diode D2 is connected with a pin 4 of the interface J2 in series, the other end of the bidirectional voltage stabilizing diode D2 is connected with a port 1 of the interface J2 in parallel with an anode of the diode D2, a cathode of the diode D2 is connected with a pin 16, a parallel point of the capacitor C2 and the driving unit J362 in series, the other end of the capacitor C2 and the constant current driving unit 2 are connected with a ground, the constant current driving unit R366 and the constant current driving unit 2 in series, pins 21, 22 and 23 are connected to the temperature diagnostic unit 3.

A pin 9 of a chip U2 in the constant current driving unit 2 is connected with a base electrode of a triode Q1, an SLM of the pin 9 is a fault diagnosis reading interface and is in open circuit and short circuit, a pin 11 series resistor R9 and a resistor R10 of a chip U2 are connected with a pin 10 in parallel and are respectively connected with the temperature diagnosis unit 3 and the high-brightness RGB lamp 4, a pin 13 series resistor R7 and a resistor R8 of a chip U2 are connected with the temperature diagnosis unit 3 and the high-brightness RGB lamp 4, and a pin 15 and a pin 14 series resistor R5 and a resistor R6 of the chip U2 are connected with the temperature diagnosis unit 3 and the high-brightness RGB lamp 4.

The capacitor C7 of the temperature diagnosis unit 3 is connected to a parallel point where the resistor R6, the pin 14 of the chip U2, the pin 21 of the chip U1 and the pin 6 of the high-luminance RGB lamp 4 are connected in parallel, the capacitor C8 is connected to a parallel point where the resistor R8, the pin 12 of the chip U2, the pin 22 of the chip U1 and the pin 7 of the high-luminance RGB lamp 4 are connected in parallel, and the capacitor C9 is connected to the resistor R10, the pin 10 of the chip U2, the pin 23 of the chip U1 and the pin 9 of the high-luminance RGB lamp 4 are connected in parallel.

Pins 6, 7 and 9 of the high-brightness RGB lamp 4 all output 150mA current, the high-brightness RGB lamp 4 with fault diagnosis is realized by controlling the detection unit 1, the constant current driving unit 2 and the temperature diagnosis unit 3, the single-channel current can reach 150mA current at most, and the total current of Red, Green and Blue channels can reach 450mA at most.

The blank of the application of the high-brightness atmosphere lamp in the interior trim atmosphere lamp industry at present is filled; the problems of temperature drift and color difference lamps are effectively solved while high brightness is realized; the high-brightness RGB lamp 4 can still realize stable color and brightness under the condition of 100 ℃, and the phenomenon of color drift caused by overhigh heating temperature of the RGB atmosphere lamp body is effectively solved.

The interior trim lamp of the vehicle is pushed to be developed from monochrome low brightness, RGB low brightness to RGB high brightness. The method brings great convenience to troubleshooting of the high-brightness RGB atmosphere lamp, solves the diagnosis problem of the high-brightness RGB circuit through a comprehensive diagnosis system, and clears obstacles for industrial development of the high-brightness RGB atmosphere lamp.

In summary, in the RGB atmosphere lamp circuit with the fault diagnosis function of the present invention, the temperature diagnosis unit 3 is connected to the detection terminal by tapping the precise high-power low-resistance resistor at the RGB constant-current terminal, and according to different voltage values of the high-brightness RGB lamp 4 in different temperature states, and according to temperature and voltage performance parameters of three different channel lamps of the RGB atmosphere lamp, real-time temperature detection is realized, the high-brightness RGB lamp 4 feeds back the respective temperature states of Red, Green, and Blue channels to the control detection unit 1 in a voltage form, the control detection unit 1 diagnoses the temperatures of the Red, Green, and Blue lamps of the high-brightness RGB lamp 4 by detecting different voltage values, and simultaneously, control compensation is realized according to different temperatures.

Pins 6, 7 and 9 of the high-brightness RGB lamp 4 all output 150mA currents, the high-brightness RGB lamp 4 with fault diagnosis is realized by controlling the detection unit 1, the constant current driving unit 2 and the temperature diagnosis unit 3, the single-channel current can reach 150mA current at most, the total current of Red, Green and Blue channels can reach 450mA at most, and the blank of the current application of the high-brightness atmosphere lamp in the interior trim atmosphere lamp industry is filled; the problems of temperature drift and color difference lamps are effectively solved while high brightness is realized; the high-brightness RGB lamp 4 can still realize stable color and brightness under the condition of 100 ℃ high, the color drift phenomenon caused by overhigh heating temperature of the RGB atmosphere lamp body is effectively solved, the diagnosis problem of a high-brightness RGB circuit is solved through a comprehensive diagnosis system, and obstacles are cleared for the industrial development of the high-brightness RGB atmosphere lamp.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.