阅读说明：本技术 一种一体化多通道车灯控制装置 (Integrated multi-channel car lamp control device ) 是由 梁新 于 2021-09-24 设计创作，主要内容包括：本发明提供一种一体化多通道车灯控制装置,包括：降压模块,降压模块的输入端连接控制模块的输出端,降压模块的输出端连接控制模块的输入端；第一滤波模块,第一滤波模块的输入端连接输入电源,第一滤波模块的输出端连接控制模块的输入端；第二滤波模块,第二滤波模块的输入端连接通讯端,第二滤波模块的输出端连接控制模块的输入端；控制模块上设有多个通道接口,用于连接车灯电路,将降压模块、控制模块、第一滤波模块和第二滤波模块集成一体化为控制装置并通过控制装置连接车灯电路对车灯进行控制。有益效果是本控制装置将降压电路、滤波电路、控制芯片集成一体化,直接接入车灯电路就能使用,无需增加辅助电路,并能够减少电路板面积。(The invention provides an integrated multi-channel car lamp control device, which comprises: the input end of the voltage reduction module is connected with the output end of the control module, and the output end of the voltage reduction module is connected with the input end of the control module; the input end of the first filtering module is connected with the input power supply, and the output end of the first filtering module is connected with the input end of the control module; the input end of the second filtering module is connected with the communication end, and the output end of the second filtering module is connected with the input end of the control module; the control module is provided with a plurality of channel interfaces and is used for being connected with a car lamp circuit, integrating the voltage reduction module, the control module, the first filtering module and the second filtering module into a control device and connecting the car lamp circuit through the control device to control a car lamp. The control device has the advantages that the voltage reduction circuit, the filter circuit and the control chip are integrated into a whole, the control device can be used by directly connecting the voltage reduction circuit, the filter circuit and the control chip into a car lamp circuit, auxiliary circuits are not required to be added, and the area of a circuit board can be reduced.)

1. The utility model provides an integration multichannel car light controlling means which characterized in that, controlling means sets up on a circuit board, includes:

the input end of the voltage reduction module is connected with the output end of a control module, and the output end of the voltage reduction module is connected with the input end of the control module;

the input end of the first filtering module is connected with an input power supply, and the output end of the first filtering module is connected with the input end of the control module;

the input end of the second filtering module is connected with the communication end, and the output end of the second filtering module is connected with the input end of the control module;

the control module is provided with a plurality of channel interfaces and used for connecting an external car lamp circuit, and the voltage reduction module, the control module, the first filtering module and the second filtering module are integrated into a whole to form the control device and the control device is connected with the car lamp circuit to control the car lamp.

2. The integrated multi-channel vehicular lamp control device of claim 1, wherein the voltage reduction module comprises:

one end of the first resistor is connected with the nineteenth pin of the control module and is used as the output end of the voltage reduction module;

one end of the first capacitor is connected with the other end of the first resistor, and the other end of the first capacitor is grounded;

the freewheeling diode is connected with the first resistor and the first capacitor in parallel, the negative electrode of the freewheeling diode is connected with one end of the first resistor, and the positive electrode of the freewheeling diode is connected with the other end of the first resistor;

and one end of the power inductor is connected with the negative electrode of the freewheeling diode, and the other end of the power inductor is connected with the twenty-first pin of the control module and is used as the input end of the voltage reduction module.

3. The integrated multi-channel vehicular lamp control device of claim 2, wherein the voltage reduction module further comprises:

one end of the second capacitor is connected with the other end of the power inductor, and the other end of the second capacitor is connected with the anode of the freewheeling diode;

the third capacitor is connected in parallel with two ends of the second capacitor, one end of the third capacitor is connected with the other end of the power inductor, and the other end of the third capacitor is connected with the anode of the freewheeling diode;

and the fourth capacitor is connected in parallel with two ends of the third capacitor, one end of the fourth capacitor is connected with the other end of the power inductor, and the other end of the fourth capacitor is connected with the anode of the freewheeling diode.

4. The integrated multi-channel vehicular lamp control device of claim 1, wherein the first filtering module comprises:

one end of the first magnetic bead is connected with the input power supply and serves as an input end of the first filtering module, and the other end of the first magnetic bead is connected with a fifteenth pin of the control module and serves as an output end of the first filtering module;

one end of the fifth capacitor is connected with one end of the first magnetic bead;

one end of the sixth capacitor is connected with the other end of the fifth capacitor, and the other end of the sixth capacitor is connected with the other end of the first magnetic bead.

5. The integrated multi-channel vehicular lamp control device of claim 1, wherein the second filtering module comprises:

one end of the second magnetic bead is connected with the communication end and serves as an input end of the second filtering module, and the other end of the second magnetic bead is connected with a seventeenth pin of the control module and serves as an output end of the second filtering module;

one end of the seventh capacitor is connected with one end of the second magnetic bead;

and one end of the eighth capacitor is connected with the other end of the seventh capacitor, and the other end of the eighth capacitor is connected with one end of the second magnetic bead.

6. The integrated multi-channel vehicle lamp control device according to claim 1, wherein the control module is further connected to a parallel capacitor bank, one end of the parallel capacitor bank is connected to the eighteenth pin of the control module, the other end of the parallel capacitor bank is grounded, and the parallel capacitor bank comprises a ninth capacitor and a tenth capacitor.

7. The integrated multi-channel car lamp control device according to claim 1, wherein the control module is further connected with an eleventh capacitor and a second resistor which are connected in series, one end of the eleventh capacitor is connected with a twenty-fourth pin of the control module, one end of the second resistor is connected with the other end of the eleventh capacitor, and the other end of the second resistor is connected with a twenty-third pin of the control module.

8. The integrated multi-channel car lamp control device as claimed in claim 1, wherein the control module is further connected with a twelfth capacitor, one end of the twelfth capacitor is connected with the third pin of the control module, and the other end of the twelfth capacitor is grounded.

9. The integrated multi-channel car light control device as claimed in claim 1, wherein the control module is further connected to a thirteenth capacitor, one end of the thirteenth capacitor is connected to the fourth pin of the control module, and the other end of the thirteenth capacitor is grounded.

10. The integrated multi-channel vehicular lamp control device according to claim 1, wherein the second capacitor and the third capacitor are bootstrap capacitors.

Technical Field

The invention relates to the technical field of vehicle lamp control, in particular to an integrated multi-channel vehicle lamp control device.

Background

With the rapid development of the integrated chip, a large amount of integrated chips are applied in various fields, the integrated chips are gradually adopted in the application field of the car lamp, the control effect of the integrated chips on the car lamp is high, and the control principle is simple, so that the integrated chips are applied in a large amount.

However, the current integrated chip is pursuing higher performance more and more, just to realize its own function, but often neglects circuit optimization, needs to add a complex auxiliary filter circuit at the periphery of the integrated chip to solve the problem, and increases difficulty for spatial arrangement of the circuit board.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides an integrated multi-channel car lamp control device, which is arranged on a circuit board and comprises:

the input end of the voltage reduction module is connected with the output end of a control module, and the output end of the voltage reduction module is connected with the input end of the control module;

the input end of the first filtering module is connected with an input power supply, and the output end of the first filtering module is connected with the input end of the control module;

the input end of the second filtering module is connected with the communication end, and the output end of the second filtering module is connected with the input end of the control module;

the control module is provided with a plurality of channel interfaces and used for connecting an external car lamp circuit, and the voltage reduction module, the control module, the first filtering module and the second filtering module are integrated into a whole to form the control device and the control device is connected with the car lamp circuit to control the car lamp.

Preferably, the voltage reduction module includes:

one end of the first resistor is connected with the nineteenth pin of the control module and is used as the output end of the voltage reduction module;

one end of the first capacitor is connected with the other end of the first resistor, and the other end of the first capacitor is grounded;

the freewheeling diode is connected with the first resistor and the first capacitor in parallel, the negative electrode of the freewheeling diode is connected with one end of the first resistor, and the positive electrode of the freewheeling diode is connected with the other end of the first resistor;

and one end of the power inductor is connected with the negative electrode of the freewheeling diode, and the other end of the power inductor is connected with the twenty-first pin of the control module and is used as the input end of the voltage reduction module.

Preferably, the voltage reduction module further includes:

one end of the second capacitor is connected with the other end of the power inductor, and the other end of the second capacitor is connected with the anode of the freewheeling diode;

the third capacitor is connected in parallel with two ends of the second capacitor, one end of the third capacitor is connected with the other end of the power inductor, and the other end of the third capacitor is connected with the anode of the freewheeling diode;

and the fourth capacitor is connected in parallel with two ends of the third capacitor, one end of the fourth capacitor is connected with the other end of the power inductor, and the other end of the fourth capacitor is connected with the anode of the freewheeling diode.

Preferably, the first filtering module includes:

one end of the first magnetic bead is connected with the input power supply and serves as an input end of the first filtering module, and the other end of the first magnetic bead is connected with a fifteenth pin of the control module and serves as an output end of the first filtering module;

one end of the fifth capacitor is connected with one end of the first magnetic bead;

one end of the sixth capacitor is connected with the other end of the fifth capacitor, and the other end of the sixth capacitor is connected with the other end of the first magnetic bead.

Preferably, the second filtering module includes:

one end of the second magnetic bead is connected with the communication end and serves as an input end of the second filtering module, and the other end of the second magnetic bead is connected with a seventeenth pin of the control module and serves as an output end of the second filtering module;

one end of the seventh capacitor is connected with one end of the second magnetic bead;

and one end of the eighth capacitor is connected with the other end of the seventh capacitor, and the other end of the eighth capacitor is connected with one end of the second magnetic bead.

Preferably, the control module is further connected with a parallel capacitor bank, one end of the parallel capacitor bank is connected with the eighteenth pin of the control module, the other end of the parallel capacitor bank is grounded, and the parallel capacitor bank comprises a ninth capacitor and a tenth capacitor.

Preferably, the control module is further connected with an eleventh capacitor and a second resistor which are connected in series, one end of the eleventh capacitor is connected with a twenty-fourth pin of the control module, one end of the second resistor is connected with the other end of the eleventh capacitor, and the other end of the second resistor is connected with a twenty-third pin of the control module.

Preferably, the control module is further connected to a twelfth capacitor, one end of the twelfth capacitor is connected to the third pin of the control module, and the other end of the twelfth capacitor is grounded.

Preferably, the control module is further connected to a thirteenth capacitor, one end of the thirteenth capacitor is connected to the fourth pin of the control module, and the other end of the thirteenth capacitor is grounded.

Preferably, the second capacitor and the third capacitor are bootstrap capacitors.

The technical scheme has the following advantages or beneficial effects: the control device integrates the voltage reduction circuit, the filter circuit and the control chip, can be used by directly connecting the circuit of the car lamp, does not need to increase an auxiliary circuit, and can reduce the area of the circuit board.

Drawings

FIG. 1 is a schematic circuit diagram of the present apparatus in accordance with the preferred embodiment of the present invention;

fig. 2 is a schematic diagram of the installation of the device in accordance with the preferred embodiment of the present invention.

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments. The present invention is not limited to the embodiment, and other embodiments may be included in the scope of the present invention as long as the gist of the present invention is satisfied.

In the preferred embodiment of the present invention, based on the above problems in the prior art, there is provided an integrated multi-channel vehicular lamp control device disposed on a circuit board 1, as shown in fig. 1 and 2, comprising:

the input end of the voltage reduction module 2 is connected with the output end of a control module 3, and the output end of the voltage reduction module 2 is connected with the input end of the control module 3;

the input end of the first filtering module 4 is connected with the input power supply, and the output end of the first filtering module 4 is connected with the input end of the control module 3;

the input end of the second filtering module 5 is connected with the communication end, and the output end of the second filtering module 5 is connected with the input end of the control module 3;

the control module 3 is provided with a plurality of channel interfaces for connecting an external car lamp circuit, integrates the voltage reduction module 2, the control module 3, the first filter module 4 and the second filter module 5 into a control device, and is connected with the car lamp circuit through the control device to control the car lamp.

Specifically, in this embodiment, in car light application, traditional car light control strategy is by the singlechip, step-down chip, the communication chip, constant current chip and filter circuit constitute, wherein each function chip interconnect, the circuit is complicated and complicated between the chip, the circuit design degree of difficulty is high, make mistakes easily, and electromagnetic compatibility test (EMC) performance is than poor, therefore, the function of traditional control strategy is comparatively single limitation, all need redesign scheme when leading to carrying out new project each time, the work of reforming of compatible test of electricity survey also need go on repeatedly, manpower and materials consumption is huge, and because car light structure limitation itself, circuit board wiring space is little, choose four plywood or more circuit boards for use usually, lead to the cost increase in a large number, extension development time.

Preferably, for traditional control strategy, control module 3 adopts a high integrated chip, the chip model is IND83204CS01, this chip is single chip computer, step-down, adjust luminance, communication function collection is as an organic whole, effectively avoided different chips to need to carry out the problem of parameter matching, also reduced the risk of chip function failure because of parameter matching problem appears, stability is improved, Pulse Width Modulation (PWM) signal passes through the channel interface and directly inputs the execution and adjusts luminance order in control module 3, and this controlling means electromagnetic compatibility test is good, but wide application in the circuit of whole car rear lamp.

Preferably, the circuit board part of the control module 3 is a four-layer board, and the voltage reduction module 2, the first filtering module 4, the second filtering module 5 and other parts all adopt two-layer boards, so that the use of the four-layer board in the circuit board is reduced, and the cost is reduced while the area of the circuit board is effectively reduced.

Preferably, be equipped with the shield cover in the circuit board for each component in the protection circuit board, the circuit board edge leaves the pad, conveniently welds, and because controlling means is integrated as a whole, not only make the circuit board walk the line simplification, the overall arrangement is optimized, and improved the electromagnetic compatibility performance, can satisfy the experimental requirement of each parking lot to the electromagnetic compatibility test, when carrying out the project test, can directly use controlling means in the circuit, can greatly save valuable development time such as circuit board cloth board, electromagnetic compatibility rectification optimization.

In a preferred embodiment of the present invention, the voltage reduction module 2 includes:

one end of the first resistor R1 is connected with the nineteenth pin of the control module 3 and serves as the output end of the voltage reduction module 2;

one end of the first capacitor C1 is connected with the other end of the first resistor R1, and the other end of the first capacitor C1 is grounded;

a freewheeling diode D1 connected in parallel with the first resistor R1 and the first capacitor C1, wherein the negative electrode of the freewheeling diode D1 is connected with one end of the first resistor R1, and the positive electrode of the freewheeling diode D1 is connected with the other end of the first resistor R1;

and one end of the power inductor L1 is connected with the negative electrode of the freewheeling diode D1, and the other end of the power inductor L1 is connected with the twenty-first pin of the control module 3 and serves as the input end of the voltage reduction module 2.

In a preferred embodiment of the present invention, the voltage reducing module 2 further includes:

one end of a second capacitor C2, one end of a second capacitor C2 is connected with the other end of the power inductor L1, and the other end of the second capacitor C2 is connected with the anode of a freewheeling diode D1;

a third capacitor C3 connected in parallel to two ends of the second capacitor C2, wherein one end of the third capacitor C3 is connected to the other end of the power inductor L1, and the other end of the third capacitor C3 is connected to the anode of the freewheeling diode D1;

and a fourth capacitor C4 connected in parallel to two ends of the third capacitor C3, wherein one end of the fourth capacitor C4 is connected to the other end of the power inductor L1, and the other end of the fourth capacitor C4 is connected to the anode of the freewheeling diode D1.

Specifically, in this embodiment, the power inductor L1, the freewheeling diode D1, the second capacitor C2, and the third capacitor C3 form a step-down circuit, and the voltage at the input end of the step-down module 2 is stepped down and then output.

In a preferred embodiment of the present invention, the first filtering module 4 includes:

one end of the first magnetic bead L2 is connected to the input power supply and serves as an input end of the first filtering module 4, and the other end of the first magnetic bead L2 is connected to a fifteenth pin of the control module 3 and serves as an output end of the first filtering module 4;

one end of the fifth capacitor C5 is connected to one end of the first magnetic bead L2;

one end of a sixth capacitor C6, one end of a sixth capacitor C6 is connected to the other end of the fifth capacitor C5, and the other end of the sixth capacitor C6 is connected to the other end of the first magnetic bead L2.

Specifically, in this embodiment, the first magnetic bead L2, the fifth capacitor C5, and the sixth capacitor C6 form a pi-type filter circuit, and the first filter module 4 performs filtering processing on the voltage of the input power source and outputs the voltage to the control module 3.

In a preferred embodiment of the present invention, the second filtering module 5 includes:

one end of the second magnetic bead L3 is connected to the communication terminal and serves as an input terminal of the second filtering module 5, and the other end of the second magnetic bead L3 is connected to the seventeenth pin of the control module 3 and serves as an output terminal of the second filtering module 5;

one end of the seventh capacitor C7 is connected to one end of the second magnetic bead L3;

one end of an eighth capacitor C8, one end of an eighth capacitor C8 is connected to the other end of the seventh capacitor C7, and the other end of the eighth capacitor C8 is connected to one end of the second magnetic bead L3.

Specifically, in this embodiment, the second magnetic bead L3, the seventh capacitor C7, and the eighth capacitor C8 form a pi-type filter circuit, and the second filter module 5 performs filtering processing on the communication signal at the communication end and outputs the filtered signal to the control module 3.

In the preferred embodiment of the present invention, the control module 3 is further connected to a parallel capacitor set, one end of the parallel capacitor set is connected to the eighteenth pin of the control module 3, the other end of the parallel capacitor set is grounded, and the parallel capacitor set includes a ninth capacitor C9 and a tenth capacitor C10.

In the preferred embodiment of the present invention, the control module 3 is further connected to an eleventh capacitor C11 and a second resistor R2, which are connected in series, one end of the eleventh capacitor C11 is connected to the twenty-fourth pin of the control module 3, one end of the second resistor R2 is connected to the other end of the eleventh capacitor C11, and the other end of the second resistor R2 is connected to the twenty-third pin of the control module 3.

In the preferred embodiment of the present invention, the control module 3 is further connected to a twelfth capacitor C12, one end of the twelfth capacitor C12 is connected to the third pin of the control module 3, and the other end of the twelfth capacitor C12 is grounded.

Specifically, in this embodiment, the twelfth capacitor C12 is used to filter the voltage of 3.3 volts received by the control module 3.

In the preferred embodiment of the present invention, the control module 3 is further connected to a thirteenth capacitor C13, one end of the thirteenth capacitor C13 is connected to the fourth pin of the control module 3, and the other end of the thirteenth capacitor C13 is grounded.

Specifically, in the present embodiment, the voltage of 1.5 volts accessed by the control module 3 is filtered through the thirteenth capacitor C13.

In the preferred embodiment of the present invention, the second capacitor C2 and the third capacitor C3 are bootstrap capacitors.

Specifically, in this embodiment, the bootstrap capacitor utilizes the characteristic that the two ends of the capacitor cannot change suddenly, when a certain voltage is maintained at the two ends of the capacitor, the voltage at the negative end of the capacitor is increased, the voltage at the positive end is still maintained at the original voltage difference at the negative end, the voltage equal to the voltage at the positive end is lifted by the negative end, the bootstrap capacitor is actually a positive feedback capacitor and is used for raising the power supply voltage, and in the circuit, the second capacitor C2 and the third capacitor C3 form a bootstrap circuit.

Specifically, in the present embodiment, in an actual chip application, the sixteenth pin, the twenty-second pin, and the forty-ninth pin of the control module 3 are grounded, the twenty-fifth pin, the twenty-sixth pin, the twenty-seventh pin, the twenty-eighth pin, the twenty-ninth pin, the thirty-fourth pin, the thirty-fifth pin, the thirty-second pin, the thirty-third pin, the thirty-fourth pin, and the thirty-fifth pin of the control module 3, the thirty-sixth pin, the thirty-seventh pin, the thirty-eighth pin, the thirty-ninth pin, the forty-fourth pin, the forty-first pin, the forty-second pin, the forty-third pin, the forty-fourth pin, the forty-fifth pin, the forty-sixth pin, the forty-seventh pin and the forty-eighth pin can be used for connecting external car lamp circuits, and the control module 3 is programmed to adaptively control the connected car lamps.

Preferably, in the subsequent development of the control module 3, an operator may develop corresponding functions for the fifth pin, the sixth pin, the seventh pin, the eighth pin, the ninth pin, the tenth pin, the eleventh pin and the twelfth pin of the control module 3, or connect an external function chip.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.