CN220518134U - Headlamp controller, control system and automobile - Google Patents
Headlamp controller, control system and automobile Download PDFInfo
- Publication number
- CN220518134U CN220518134U CN202322034087.1U CN202322034087U CN220518134U CN 220518134 U CN220518134 U CN 220518134U CN 202322034087 U CN202322034087 U CN 202322034087U CN 220518134 U CN220518134 U CN 220518134U
- Authority
- CN
- China
- Prior art keywords
- module
- microcontroller
- headlight
- led driving
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001514 detection method Methods 0.000 claims description 41
- 230000005611 electricity Effects 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 5
- 230000005856 abnormality Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Landscapes
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
The utility model provides a headlamp controller, a control system and an automobile, wherein the headlamp controller comprises a microcontroller, a power management module, an LED driving module and a microcontroller power supply module; the power management module is used for connecting an external power supply; one end of the LED driving module is connected with the power management module, and the other end of the LED driving module is used for being connected with the light source plate; the first end of the microcontroller is connected with the signal input end of the vehicle body control module, the second end of the microcontroller is connected with the power management module through the microcontroller power supply module, the third end of the microcontroller is connected with the LED driving module, and the LED driving module is controlled to be turned on or turned off according to a control signal input by the signal input end. The utility model adopts a parallel mode that the headlight is powered from an external power supply, avoids the maximum power limit of each function of the headlight, avoids the limitation of insufficient driving power of the LED driving module on the design of the headlight, ensures the use safety of the headlight controller and improves the light design flexibility of the headlight.
Description
Technical Field
The utility model belongs to the technical field of headlamp control, and particularly relates to a headlamp controller, a control system and an automobile.
Background
In the existing market, a headlight of an automobile is mostly directly driven by a vehicle body control module (English full name: body control module, BCM for short), a dipped headlight (English full name: low beam, LB for short), a High beam (English full name: high beam, HB for short), a steering lamp (English full name: turn signs, turn for short), a daytime running lamp (English full name: daytime running lights, DRL for short) and a Position lamp (English full name: position lights, PL for short) as shown in fig. 2.
In the prior art, a vehicle body control module detects the working state of each function of a headlight by detecting the driving current on each function power hard wire, and judges failure (open circuit and short circuit) when the current is abnormal. In such a design, each function of the headlight must be directly driven by the vehicle body control module, and if the headlight is changed to use a storage battery power taking scheme, each function of the headlight cannot be detected by the vehicle body control module when the headlight fails. In addition, the maximum power of each function of the headlight is limited and cannot exceed the driving capability of the vehicle body control module, the vehicle body control module is damaged due to the exceeding of the driving capability, the design of the headlight is restricted by the driving capability of the vehicle body control module, and the headlight is often required to be reduced in performance or the mode of reducing the modeling lighting area so as to control the power of each function within the driving capability of the vehicle body control module.
Disclosure of Invention
The utility model provides a headlamp controller which aims at solving the problem that the maximum power of each function of the existing headlamp is limited and cannot exceed the driving capability of a vehicle body control module.
A headlight controller comprises a microcontroller, a power management module, an LED driving module and a microcontroller power supply module;
the power management module is used for connecting an external power supply;
one end of the LED driving module is connected with the power management module, and the other end of the LED driving module is used for being connected with a light source plate;
the first end of the microcontroller is connected with the signal input end of the vehicle body control module, the second end of the microcontroller is connected with the power management module through the microcontroller power supply module, the third end of the microcontroller is connected with the LED driving module, and the microcontroller is used for controlling the LED driving module to be switched on or switched off according to a control signal input by the signal input end.
Preferably, the microcontroller power module comprises a low dropout linear regulator;
one end of the low dropout linear voltage regulator is connected with the microcontroller, and the other end of the low dropout linear voltage regulator is connected with the power management module.
Preferably, the headlamp controller further comprises a load module;
one end of the load module is connected with the signal input end and the microcontroller, and the other end of the load module is grounded.
Preferably, the load module comprises a load detection switch and a load detection resistor;
one end of the load detection switch is connected with the signal input end and the microcontroller, and the other end of the load detection switch is grounded through the load detection resistor.
A control system comprising the headlamp controller, a vehicle body control module and a light source plate;
the vehicle body control module is connected with the microcontroller through the signal input end, and the microcontroller controls the light source plate to work through the LED driving module. .
Preferably, the vehicle body control module is connected with the microcontroller through at least one power hard wire.
Preferably, at least one of the power hard wires comprises a low beam hard wire, a high beam hard wire, a daytime running light hard wire and a position light hard wire;
the light source panel includes a low beam, a high beam, a daytime running light, and a position light.
An automobile comprising a battery and the control system;
the storage battery is connected with the power management module.
The utility model relates to a headlight controller, which comprises a microcontroller (Micro Controller Unit, abbreviated as MCU), a power management module, an LED driving module and a microcontroller power supply module, wherein one end of the LED driving module is connected with the power management module, the other end of the driving module is used for connecting a light source plate, a power supply loop is formed between the power management module and the light source plate, the power management module is used for connecting an external power supply, and the light source plate is driven to work through the LED driving module; the first end of microcontroller links to each other with automobile body control module's signal input part, and microcontroller's second end passes through microcontroller power module and links to each other with power management module, and microcontroller's third end links to each other with LED drive module, according to automobile body control module's signal input part input control signal, control LED drive module switches on or breaks off, sets up like this and adopts the headlight to get the parallel mode of electricity from external power supply, avoids the maximum power restriction of each function of headlight, avoids the design of the headlight of the not enough restriction headlight of LED drive module drive power, ensures that the headlight controller is safe in utilization, improves the light design flexibility of headlight.
Drawings
FIG. 1 is a circuit diagram of a headlamp controller of the present utility model;
fig. 2 is a circuit diagram of a prior art headlamp controller.
Wherein, 1, a microcontroller; 2. a power management module; 3. an LED driving module; 4. a microcontroller power supply module; 5. a light source board; 6. a load module; 61. a load detection switch; 62. a load detection resistor; 7. a vehicle body control module; 8. power hard wire.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships that are based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The embodiment of the utility model provides a headlamp controller, referring to fig. 1, which comprises a microcontroller 1, a power management module 2, an LED driving module 3 and a microcontroller power supply module 4; the power management module 2 is used for connecting an external power supply; one end of the LED driving module 3 is connected with the power management module 2, and the other end of the LED driving module 3 is used for being connected with the light source plate 5; the first end of the microcontroller 1 is connected with the signal input end of the vehicle body control module 7, the second end of the microcontroller 1 is connected with the power management module 2 through the microcontroller power supply module 4, the third end of the microcontroller 1 is connected with the LED driving module 3, and the LED driving module 3 is controlled to be turned on or off according to a control signal input by the signal input end.
In the prior art, one end of a Liquid Crystal Module (LCM) in a headlight controller is connected with a light source board 5, the other end is connected with a power supply and a control element (i.e. a car body control module 7), and the headlight controller is directly controlled by the control element to display the required functional light on the light source board 5, so that the maximum power of each function of the headlight is limited by the driving power of the car body control module 7, the design requirement of the headlight cannot be met, and the maximum power of each function of the headlight exceeds the driving power limit value of the car body control module 7, thereby causing the damage of the car body control module 7.
In the example, the headlamp controller comprises a microcontroller 1 (Micro Controller Unit, abbreviated as MCU), a power management module 2, an LED driving module 3 and a microcontroller power supply module 4, wherein one end of the LED driving module 3 is connected with the power management module 2, the other end of the LED driving module 3 is used for being connected with a light source plate 5, a power supply loop is formed between the power management module 2 and the light source plate 5, the power management module 2 is used for being connected with an external power supply, and the light source plate 5 is driven to work through the LED driving module 3; the first end of microcontroller 1 links to each other with the signal input part of automobile body control module 7, and microcontroller 1's second end links to each other with power management module 2 through microcontroller power module 4, and microcontroller 1's third end links to each other with LED drive module 3, and according to the control signal of automobile body control module 7 signal input part input, LED drive module 3 is switched on or off, sets up like this and adopts the parallel mode that the headlight got the electricity from external power supply, avoids the maximum power restriction of each function of headlight, avoids the design of the headlight of the restriction of LED drive module drive power shortage, ensures that headlight controller safety in utilization, improves the light design flexibility of headlight.
In one embodiment, referring to FIG. 1, the microcontroller power module 4 comprises a low dropout linear regulator; one end of the low dropout linear voltage regulator is connected with the microcontroller 1, and the other end of the low dropout linear voltage regulator is connected with the power management module 2.
As an example, the microcontroller power supply module 4 includes a low dropout linear regulator (Low dropout regulator, abbreviated as LDO) having a step-down voltage stabilizing function, and in the safe input range of the low dropout linear regulator, the low dropout linear regulator can receive a large input change, and the output change after step-down voltage stabilization is small, so that the circuit output is ensured to be stable, and the headlight controller is prevented from being abnormally damaged due to the output change.
In one embodiment, referring to fig. 1, the headlamp controller further comprises a load module 6; one end of the load module 6 is connected with the signal input end and the microcontroller 1, and the other end of the load module 6 is grounded.
As an example, a load module 6 is added to the microcontroller 1 of the headlamp controller, one end of the load module 6 is connected to the signal input end and the microcontroller 1, and the other end of the load module 6 is grounded and used for detecting whether each function of the headlamp works normally. Taking a daytime running light in each function of the headlight as an example, when the daytime running light function is abnormal such as open circuit, short circuit and the like, the microcontroller 1 can control the circuit of the load module 6 to be powered off, the control element can detect that the current in the circuit is abnormally small, and the abnormal working of the daytime running light function is defined; when the daytime running light functions normally, the microcontroller 1 controls the circuits of the load module 6 to be energized, and the control element can detect the current in the circuits of the load module 6, which is defined as the normal operation of the daytime running light.
In one embodiment, referring to fig. 1, the load module 6 includes a load detection switch 61 and a load detection resistor 62; one end of the load detection switch 61 is connected to the signal input terminal and the microcontroller 1, and the other end of the load detection switch 61 is grounded through the load detection resistor 62.
As an example, the load module 6 includes a load detection switch 61 and a load detection resistor 62, when in use, one end of the load detection switch 61 is connected with the signal input end and the microcontroller 1, the other end of the load detection switch 61 is grounded through the load detection resistor 62, taking a daytime running light in each function of the headlight as an example, when an abnormality such as open circuit, short circuit, etc. occurs in the daytime running light function, the microcontroller 1 controls the load detection switch 61 to be turned off, the load detection resistor 62 is turned off, the control element can detect that the current abnormality in the circuit becomes small, and defines that the daytime running light function is abnormal; when the daytime running light functions normally, the microcontroller 1 controls the load detection switch 61 to be closed, the load detection resistor 62 is electrified, and the control element can detect the current in the load detection resistor 62, so that the daytime running light is defined as working normally.
The embodiment of the utility model provides a control system, referring to FIG. 1, comprising a headlight controller, a vehicle body control module 7 and a light source plate 5; the vehicle body control module 7 is connected with the microcontroller 1 through a signal input end, and the microcontroller 1 controls the light source board 5 to work through the LED driving module 3.
As an example, the control system includes a headlamp controller, a body control module 7, and a light source panel 5; one end of the LED driving module 3 is connected with the power management module 2, the other end of the LED driving module 3 is used for being connected with the light source plate 5, a power supply loop is formed between the power management module 2 and the light source plate 5, the power management module 2 is used for being connected with an external power supply, and the light source plate 5 is driven to work through the LED driving module 3; the first end of microcontroller 1 links to each other with the signal input part of automobile body control module 7, and microcontroller 1's second end links to each other with power management module 2 through microcontroller power module 4, and microcontroller 1's third end links to each other with LED drive module 3, according to the control signal of signal input part input, controls LED drive module 3 and switches on or off, sets up the parallel mode that adopts the headlight to get the electricity from external power supply like this, avoids the maximum power restriction of each function of headlight, avoids the design of the not enough restriction headlight of LED drive module drive power, ensures that the headlight controller is safe in utilization, improves the light design flexibility of headlight.
In one embodiment, referring to fig. 1, the body control module 7 is connected to the microcontroller 1 via at least one power hard wire 8.
As an example, the vehicle body control module 7 is connected with the microcontroller 1 through at least one power hard wire 8, the vehicle body control module 7 detects the working state of each function of the headlight by detecting the driving current on the power hard wire 8, and the load detection switch 61 and the load detection resistor 62 are additionally arranged on the power hard wire 8, so that the driving capability of the vehicle body control module 7 can be improved, and when the design of the headlight needs to increase the power of each function of the headlight, the vehicle body control module 7 can still detect whether each function of the headlight works normally or not by detecting the current on the corresponding hard wire; the power of each function of the headlight is not limited by the driving capability of the vehicle body control module 7 any more, so that the power of each function of the headlight can be designed based on the requirements of modeling and performance; meanwhile, the vehicle body control module 7 is not required to be affected by functions of the front headlight, and the whole vehicle is more facilitated to be platform.
In one embodiment, referring to fig. 1, the at least one power hard line 8 comprises a low beam hard line, a high beam hard line, a daytime running light hard line, and a position light hard line; the light source board 5 includes a low beam lamp, a high beam lamp, a daytime running lamp and a position lamp.
As an example, one power hard-wire 8 corresponds to one function light, and at least one power hard-wire 8 includes a low beam hard-wire, a high beam hard-wire, a daytime running light hard-wire, and a position light hard-wire; the light source board 5 comprises a dipped headlight lamp tube (LB LED), a high beam lamp tube (HB LED), a daytime running light lamp tube (DRL LED) and a position lamp tube (PL LED), a load detection switch 61 and a load detection resistor 62 are additionally arranged on a corresponding power hard wire 8, and whether the corresponding functions of the front headlight work normally can be detected through the vehicle body control module 7.
The embodiment of the utility model provides an automobile, referring to FIG. 1, comprising a storage battery and a control system; the battery is connected to the power management module 2.
As an example, the vehicle body control module 7 is connected with the microcontroller 1, one end of the LED driving module 3 is connected with the power management module 2, the other end of the LED driving module 3 is used for connecting the light source board 5, so that a power supply loop is formed between the power management module 2 and the light source board 5, the power management module 2 is connected with the storage battery, and the light source board 5 is driven to work through the LED driving module 3; the first end of microcontroller 1 links to each other with the signal input part of automobile body control module 7, and microcontroller 1's second end links to each other with power management module 2 through microcontroller power module 4, and microcontroller 1's third end links to each other with LED drive module 3, according to the control signal of signal input part input, controls LED drive module 3 and switches on or off, sets up the parallel mode that adopts the headlight to get the electricity from external power supply like this, avoids the maximum power restriction of each function of headlight, avoids the design of the not enough restriction headlight of LED drive module drive power, ensures that the headlight controller is safe in utilization, improves the light design flexibility of headlight. The vehicle body control module 7 can send out signals through the corresponding power hard wire 8, the headlight controller takes electricity from a storage battery (for example, KL 30), the vehicle body control module 7 detects the working state of each function of the headlight by detecting the driving current on each function power hard wire 8, and the headlight control module judges failure (open circuit and short circuit) when the current is abnormal.
In this example, one end of the load detection switch 61 is connected to the signal input end and the microcontroller 1, the other end of the load detection switch 61 is grounded through the load detection resistor 62, taking daytime running lights in each function of the headlight as an example, when an abnormality such as open circuit or short circuit occurs in the daytime running lights, the microcontroller 1 controls the load detection switch 61 to be turned off, the load detection resistor 62 is powered off, the vehicle body control module 7 can detect that the current abnormality in the circuit becomes small, and the daytime running lights are defined to work abnormally; when the daytime running light functions normally, the microcontroller 1 controls the load detection switch 61 to be closed, the load detection resistor 62 is electrified, and the vehicle body control module 7 can detect the current in the load detection resistor 62, so that the daytime running light is defined to work normally.
In the embodiment, the headlight controller takes electricity from the storage battery, and meanwhile, the load detection switch 61 and the load detection resistor 62 are additionally arranged, so that the power of each function of the headlight is not limited by the driving capability of the vehicle body control module 7 any more, and the power of each function of the headlight can be designed based on the requirements of modeling and performance; meanwhile, the vehicle body control module 7 is not required to be affected by functions of the front headlight, and the whole vehicle is more facilitated to be platform.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (8)
1. The headlamp controller is characterized by comprising a microcontroller, a power management module, an LED driving module and a microcontroller power supply module;
the power management module is used for connecting an external power supply;
one end of the LED driving module is connected with the power management module, and the other end of the LED driving module is used for being connected with a light source plate;
the first end of the microcontroller is connected with the signal input end of the vehicle body control module, the second end of the microcontroller is connected with the power management module through the microcontroller power supply module, the third end of the microcontroller is connected with the LED driving module, and the microcontroller is used for controlling the LED driving module to be switched on or switched off according to a control signal input by the signal input end.
2. The headlamp controller of claim 1 wherein the microcontroller power module comprises a low dropout linear regulator;
one end of the low dropout linear voltage regulator is connected with the microcontroller, and the other end of the low dropout linear voltage regulator is connected with the power management module.
3. The headlamp controller of claim 1 wherein the headlamp controller further comprises a load module;
one end of the load module is connected with the signal input end and the microcontroller, and the other end of the load module is grounded.
4. A headlamp controller according to claim 3, wherein the load module comprises a load detection switch and a load detection resistor;
one end of the load detection switch is connected with the signal input end and the microcontroller, and the other end of the load detection switch is grounded through the load detection resistor.
5. A control system comprising the headlamp controller of any of claims 1-4, a body control module, and a light source panel;
the vehicle body control module is connected with the microcontroller through the signal input end, and the microcontroller controls the light source plate to work through the LED driving module.
6. The control system of claim 5, wherein the body control module is coupled to the microcontroller via at least one power hard wire.
7. The control system of claim 6, wherein at least one of the power hard wires comprises a low beam hard wire, a high beam hard wire, a daytime running light hard wire, and a position light hard wire;
the light source panel includes a low beam, a high beam, a daytime running light, and a position light.
8. An automobile comprising a battery and the control system of any one of claims 5-7;
the storage battery is connected with the power management module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322034087.1U CN220518134U (en) | 2023-07-31 | 2023-07-31 | Headlamp controller, control system and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322034087.1U CN220518134U (en) | 2023-07-31 | 2023-07-31 | Headlamp controller, control system and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220518134U true CN220518134U (en) | 2024-02-23 |
Family
ID=89923275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322034087.1U Active CN220518134U (en) | 2023-07-31 | 2023-07-31 | Headlamp controller, control system and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220518134U (en) |
-
2023
- 2023-07-31 CN CN202322034087.1U patent/CN220518134U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209949004U (en) | Motor drive system, motor driver and electric automobile | |
| CN112498227A (en) | Automobile dynamic lamp control system and automobile | |
| CN220518134U (en) | Headlamp controller, control system and automobile | |
| CN219960886U (en) | Car light circuit | |
| KR100473653B1 (en) | Automatic control circuit for controling lamp | |
| US6803749B2 (en) | Power supply system and process including sub-switching element control | |
| CN111381527B (en) | Vehicle load control circuit and method | |
| CN216300786U (en) | Discharge circuit of motor controller | |
| CN205395905U (en) | Car car light intelligent control module | |
| CN209748871U (en) | controller of daytime running light based on CAN communication module | |
| JP2013109939A (en) | Semiconductor light source lighting circuit | |
| CN111916954A (en) | OBD universal joint | |
| CN114982379A (en) | Lighting circuit and direction indicator lamp for vehicle | |
| CN218228811U (en) | Car headlamp control system and car | |
| CN219697951U (en) | Control system for automobile LOGO lamp, automobile lamp and automobile with automobile LOGO lamp | |
| CN114207348A (en) | Light source module | |
| CN215097427U (en) | Power supply system for trailer | |
| CN213780333U (en) | Automobile lamp detection circuit | |
| CN216374810U (en) | Direction light controller | |
| CN215204643U (en) | Car light control system and car | |
| CN218103580U (en) | Low-cost automobile lamp control circuit | |
| CN219893480U (en) | Car light control system, car light and car thereof | |
| CN211653498U (en) | Control circuit of double-circuit DC-DC start-stop voltage stabilizer for vehicle | |
| CN116321588A (en) | Headlight control system and method for intelligently adjusting LED input voltage through PID | |
| CN211308387U (en) | Vehicle lamp control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |