CN112677875A - Daytime driving lamp control system and method and vehicle - Google Patents
Daytime driving lamp control system and method and vehicle Download PDFInfo
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Abstract
The invention discloses a control system, a control method and a vehicle of daytime running lights, belonging to the technical field of vehicle lights.A power supply and various vehicle light signals of the vehicle are transmitted to a controller of the daytime running lights through a combination instrument, and the controller of the daytime running lights controls the daytime running lights to be turned ON or off through defined logic operation under the ON gear state of the vehicle, so that the control system is suitable for modifying the daytime running lights of large vehicles without using CAN buses; the system comprises a signal acquisition unit, a signal processing unit and a signal processing unit, wherein the signal acquisition unit is configured to acquire a plurality of high and low level signals from a vehicle body; a central processing unit configured to acquire a plurality of discrete signals from the signal acquisition unit and acquire a control target amount for controlling the daytime running light; and a signal output control unit connected to the daytime running light, configured to acquire a control target amount of the daytime running light from the central processing unit, and output a control level to the daytime running light.
Description
Technical Field
The invention belongs to the technical field of car lamps, and particularly relates to a daytime running lamp control system and method and a vehicle.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The daytime running light is also called daytime running light and daytime running light, is originated from factors of road conditions of various forests such as Europe, North America and the like and foggy climate, and is a light which is started in daytime and is successively proposed in Europe and North America to avoid traffic accidents. To meet this demand, each automobile manufacturer turns on a headlight as a daytime running light to clarify the position and the traveling direction of the vehicle, thereby improving traffic safety. At the beginning, foreign automobile manufacturers adopt a scheme of starting the dipped headlight when the automobile is started in the daytime to realize the daytime running light function. However, in China, the installation of daytime running lamps is not a mandatory requirement, and if the daytime running lamps exist, the daytime running of the automobile must be started; if there is no daytime running light, it does not need to be turned on.
With the improvement of the global environmental protection importance degree, the environmental protection department correspondingly proposes the following issues: when the headlamp is turned on, the energy consumption is large, the exhaust emission is increased, and automobile manufacturers are required to adopt other modes to realize the daytime running lamp function. According to data statistics, the traffic accidents can be reduced by 12.4% by turning on the daytime running light.
The inventor finds that the control mode of the daytime running light of the passenger car applying the CAN bus system CAN meet the requirements of national standards and European Union standards at present. However, in a passenger car not applying the CAN bus system, the control mode of the daytime running lamp is difficult to realize, and at present, many large passenger train types do not use the CAN bus system but require the installation of the daytime running lamp.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a control system, a control method and a vehicle for daytime running lights.
In order to achieve the purpose, the invention is realized by the following technical scheme:
in a first aspect, the present invention provides a daytime running light control system, including:
the signal acquisition unit is configured to acquire a plurality of high-low level signals from the vehicle body;
a central processing unit configured to acquire a plurality of discrete signals from the signal acquisition unit and acquire a control target amount for controlling the daytime running light;
and a signal output control unit connected to the daytime running light, configured to acquire a control target amount of the daytime running light from the central processing unit, and output a control level to the daytime running light.
In a second aspect, the present invention further provides a daytime running light control method, where, using the daytime running light control system according to the first aspect, the acquired high and low level signals include an ON-shift signal, a left steering signal, a right steering signal, a high beam signal, a low beam signal, and a fog signal, including the following steps:
when the ON gear level signal is detected, the daytime running lamp is immediately started, and when the ON gear level signal is not detected, the daytime running lamp is closed;
when a low beam signal is detected, the daytime running lamp is turned off, and when the low beam signal is not detected, the daytime running lamp is turned on in a delayed manner;
when a high beam signal is detected, the daytime running lamp is turned off, and when the high beam signal is not detected, the daytime running lamp is turned on in a delayed manner;
when a front fog light signal is detected, the daytime running light is turned off, and when the front fog light signal is not detected, the daytime running light is immediately turned on;
when the turning is detected, the turning-side daytime running light is turned off, and when the turning signal is not detected, the turning-side daytime running light is immediately turned on.
The technical scheme of the invention has the following beneficial effects:
1) the invention transmits the power supply of the vehicle and various vehicle lamp signals to the daytime running lamp controller through the combination instrument, and the daytime running lamp controller controls the daytime running lamp to be turned ON or off through defined logical operation in the ON state of the vehicle.
2) In the invention, the related detection signals ON the vehicle body are all converted and output to the central processing unit, the collected signals are used for the central processing unit to carry out logical operation, in the process, the related signals ON the vehicle body become the basis for determining whether the daytime running lamp is started or not, and the daytime running lamp is related to the ON gear signal, the left steering signal, the right steering signal, the high beam signal, the low beam signal and the fog lamp signal ON the vehicle body, so that the inconvenience caused by manually starting the daytime running lamp is avoided, and the daytime running lamp system in the embodiment can be in accordance with related regulations.
3) In the invention, the daytime running light is started in two modes of immediate starting and delayed starting, the delayed starting is associated with the actions of a high beam and a low beam, the high beam and the low beam are not used in the daytime, the low beam and the high beam are generally switched for switching the low beam or the high beam when the low beam and the high beam execute the closing action, and the low beam and the high beam can be conveniently switched after 2s of time delay.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
Figure 1 is a schematic diagram of a system configuration of the present invention according to one or more embodiments,
figure 2 is a schematic diagram of a control module connection according to one or more embodiments of the present invention,
figure 3 is a schematic diagram of a power management unit according to one or more embodiments of the invention,
figure 4 is a schematic diagram of a signal conversion circuit according to one or more embodiments of the present invention,
figure 5 is a schematic diagram of a single chip microcomputer KEAZN8 of the present invention according to one or more embodiments,
FIG. 6 is a schematic diagram of a signal output module according to one or more embodiments of the invention.
The spacing or dimensions between each other are exaggerated to show the location of the various parts, and the illustration is for illustrative purposes only.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, unless the invention expressly state otherwise, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
for convenience of description, the words "up", "down", "left" and "right" in the present invention, if any, merely indicate correspondence with the directions of up, down, left and right of the drawings themselves, and do not limit the structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.
Term interpretation section: the terms "mounted," "connected," "fixed," and the like in the present invention are to be understood in a broad sense, and for example, the terms "mounted," "connected," and "fixed" may be fixed, detachable, or integrated; the two components can be connected mechanically or electrically, directly or indirectly through an intermediate medium, or connected internally or in an interaction relationship, and the terms used in the present invention should be understood as having specific meanings to those skilled in the art.
As described in the background art, aiming at the defects in the prior art, the invention aims to provide a daytime running light control system, a method and a vehicle, wherein a combination instrument is used for forwarding a power supply of the vehicle and various vehicle light signals to a daytime running light controller, and the daytime running light controller controls the daytime running light to be turned ON or off through defined logic operation in an ON-gear state of the vehicle, so that the daytime running light control system is suitable for modifying a large vehicle which does not use a CAN bus into a daytime running light.
Example 1
Referring to fig. 1, the present embodiment discloses a daytime running light control system, which includes a central processing unit, a power management unit, a signal acquisition unit, and a signal output control unit. The signal acquisition unit is configured to acquire an ON gear signal, a left-right steering signal, a high beam signal, a low beam signal and a fog lamp signal of a current vehicle, the power management unit is connected with a vehicle power supply and respectively supplies power to the central processing unit, the signal acquisition unit and the signal output control unit, the central processing unit is configured to acquire control target quantities for controlling left and right daytime running lamps through the ON gear signal, the left steering signal, the right steering signal, the high beam signal, the low beam signal and the fog lamp signal of the current vehicle acquired by the signal acquisition unit, and the signal output control unit is configured to acquire the control target quantities for controlling the left and right daytime running lamps from the central processing unit and output control levels; the signal output control unit is connected with the left and right daytime running lamps.
It should be noted that the control target in the present embodiment is a daytime running light, and the data to be acquired in the present embodiment are an ON-range signal, a left turn signal, a right turn signal, a high beam signal, a low beam signal, and a fog signal.
More specifically, referring to fig. 3, the power management unit includes a 7805 three-terminal voltage regulator integrated circuit, a filter capacitor and a filter circuit formed by diodes, which are connected to each other, and the power management unit is connected to the vehicle power supply and obtains power from the vehicle power supply, and respectively supplies power to the central processing unit, the signal acquisition unit and the signal output control unit.
More specifically, referring to fig. 4, the signal input module includes 6 signal conversion circuits with the same function, the signal conversion circuits are independent from each other, in this embodiment, the 6 signal conversion circuits with the same function are respectively named as a first signal conversion circuit, a second signal conversion circuit, a third signal conversion circuit, a fourth signal conversion circuit, a fifth signal conversion circuit and a sixth signal conversion circuit, the first signal conversion circuit is configured to receive an ON-gear signal, the second signal conversion circuit is configured to receive a left-turn signal, the third signal conversion circuit is configured to receive a right-turn signal, the fourth signal conversion circuit is configured to receive a high beam signal, the fifth signal conversion circuit is configured to receive a low beam signal, and the sixth signal conversion circuit is configured to receive a fog signal. And the ON gear signal, the left turn light steering signal, the right turn light steering signal, the dipped headlight signal and the fog light signal are all level signals.
The signal conversion circuit is a voltage conversion circuit and converts the level signal into a signal range which can be accepted by the central processing unit. More specifically, because the amplitude of the horizontal signal output by the combination instrument is large (0V-24V), and exceeds the signal voltage that the control module can bear, the signal conversion circuit is used for converting the six level signals into TTL level signals (0V-5V) that the central processing unit can process and receive.
More specifically, referring to fig. 2 and 5, the central processing unit in this embodiment employs a ciscarl Kinetis EA series KEAZN8 chip, which is a highly scalable 32-bit ARM-Cortex-M0+ MCU series oriented to general automobile applications, and the series is optimized for cost-sensitive applications and can provide low pin count options and extremely low power consumption. The Kinetis EA series MCU relies on 2.7-5.5V power supply working environment and focuses on outstanding EMC/ESD robustness, is well suited for various applications including automotive body applications, is a door entry level body controller or gateway module, window/skylight controller, burglar alarm or seat/mirror controller, excellent choice for ambient lighting. The Kinetis EA series MCUs share similar peripherals and provide several pin counts and memory options, allowing developers to easily migrate to MCUs that utilize more memory or peripheral integration advantages. This scalability allows developers to standardize on the Kinetis EA family MCU for their end product platform, thereby maximizing the use of hardware and software.
In this embodiment, a chip of the Freescale Kinetis EA series KEAZN8 is used to perform logic operations.
More specifically, an ADC acquisition pin ADCO _ SE3-SE7 of the central processing unit receives a level signal acquired by the signal input module, executes logic operation according to program setting, and controls pins of the single chip microcomputer MCU _11 and the MCU _12 to output according to a calculation result, so that the left and right daytime running lamps are controlled to be turned on and off.
The specific control logic is as follows: when an ON level signal is detected, the pin of the daytime running lamp is immediately output (without time delay), and when the ON level signal is not detected, the pin of the daytime running lamp is output and closed; when a low beam signal is detected, the output of the daytime running light is turned off, and when the low beam signal is not detected, the output of the daytime running light is delayed for 2 seconds; when a high beam signal is detected, the output of the daytime running lamp is closed, and when the high beam signal is not detected, the daytime running lamp is delayed for 2 seconds and is output; when a front fog light signal is detected, the output of the daytime running light is turned off, and when the front fog light signal is not detected, the daytime running light is immediately output; when the turning is detected, the turning-side daytime running light output is turned off, and when the turning signal is not detected, the turning-side daytime running light output is immediately made.
More specifically, referring to fig. 6, the signal output module includes an intelligent high-side power switch tube of a model BTS443P, a diode of a model Q8MMBT4401, 1 resistor with a resistance value of 1K, a 10K resistor, and a capacitor of a model 104, which are connected to form an amplifying circuit, and the specific connection is as shown in fig. 6, wherein a pin 2 of the intelligent high-side power switch tube of the BTS443P is connected to the diode Q8MMBT4401, a resistor with a resistance value of 1K Ω is arranged on a connection path between the intelligent high-side power switch tube and the diode, the capacitor of the model 104 is connected between a ground terminal and an output terminal of the diode, and the resistor of the model 10K Ω is connected to the output terminal of the diode.
The signal output module acquires a result (TTL) after the logic operation of the central processing unit is finished, so that the MOSFET field effect transistor is driven to be conducted, and the left and right daytime running lamps are controlled to be turned on or turned off by controlling the on-off state of the MOSFET field effect transistor.
Example 2
In an exemplary embodiment of the present invention, the present embodiment discloses a control method of a daytime running light, which uses the control system of the daytime running light described in embodiment 1, and includes the following steps:
when the ON gear level signal is detected, the daytime running lamp is immediately started, and when the ON gear level signal is not detected, the daytime running lamp is closed;
when a low beam signal is detected, the daytime running lamp is turned off, and when the low beam signal is not detected, the daytime running lamp is turned on after being delayed for 2 seconds;
when a high beam signal is detected, the daytime running lamp is turned off, and when the high beam signal is not detected, the daytime running lamp is turned on after 2 seconds of delay;
when a front fog light signal is detected, the daytime running light is turned off, and when the front fog light signal is not detected, the daytime running light is immediately turned on;
when the turning is detected, the turning-side daytime running light is turned off, and when the turning signal is not detected, the turning-side daytime running light is immediately turned on.
Example 3
In an exemplary embodiment of the present invention, the present embodiment discloses a vehicle body including the daytime running light control system according to embodiment 1.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A daytime running light control system, characterized by comprising:
the signal acquisition unit is configured to acquire a plurality of high-low level signals from the vehicle body;
a central processing unit configured to acquire a plurality of discrete signals from the signal acquisition unit and acquire a control target amount for controlling the daytime running light;
and a signal output control unit connected to the daytime running light, configured to acquire a control target amount of the daytime running light from the central processing unit, and output a control level to the daytime running light.
2. The daytime running light control system according to claim 1, wherein the signal acquisition unit comprises a plurality of signal conversion circuits, the signal input end of each signal conversion circuit is respectively connected with a part of the vehicle body outputting high and low level signals, and the signal output end of each signal conversion circuit is respectively connected with the central processing unit.
3. The daytime running light control system according to claim 1 or 2, wherein the plurality of high and low level signals from the vehicle body include an ON-range signal, a left turn signal, a right turn signal, a high beam signal, a low beam signal, and a fog light signal.
4. The daytime running light control system according to claim 2, wherein the signal conversion circuit is a voltage conversion circuit.
5. The daytime running light control system according to claim 1, wherein the central processing unit is an MCU, and the signal acquisition unit is connected to a plurality of pins of the MCU.
6. The daytime running light control system according to claim 1, wherein the signal output control unit includes an amplification circuit.
7. The daytime running light control system according to claim 1, further comprising a power management unit, wherein the power management unit is connected to the vehicle power supply and takes power from the vehicle power supply, and the power management unit is connected to the central processing unit, the signal acquisition unit and the signal output control unit for supplying power.
8. A vehicle body characterized by comprising the daytime running light control system according to any one of claims 1 to 6.
9. A daytime running light control method, characterized in that, using the daytime running light control system according to claim 1, the acquired high and low level signals include an ON-range signal, a left turn signal, a right turn signal, a high beam signal, a low beam signal, and a fog signal, comprising the steps of:
when the ON gear level signal is detected, the daytime running lamp is immediately started, and when the ON gear level signal is not detected, the daytime running lamp is closed;
when a low beam signal is detected, the daytime running lamp is turned off, and when the low beam signal is not detected, the daytime running lamp is turned on in a delayed manner;
when a high beam signal is detected, the daytime running lamp is turned off, and when the high beam signal is not detected, the daytime running lamp is turned on in a delayed manner;
when a front fog light signal is detected, the daytime running light is turned off, and when the front fog light signal is not detected, the daytime running light is immediately turned on;
when the turning is detected, the turning-side daytime running light is turned off, and when the turning signal is not detected, the turning-side daytime running light is immediately turned on.
10. The daytime running light control method according to claim 8, wherein the delay time of the daytime running light delayed turning on is 2 seconds.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011603983.XA CN112677875A (en) | 2020-12-29 | 2020-12-29 | Daytime driving lamp control system and method and vehicle |
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| CN202011603983.XA CN112677875A (en) | 2020-12-29 | 2020-12-29 | Daytime driving lamp control system and method and vehicle |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204037424U (en) * | 2014-06-24 | 2014-12-24 | 东风商用车有限公司 | Driving lamp control setup between a kind of automobile daytime |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204037424U (en) * | 2014-06-24 | 2014-12-24 | 东风商用车有限公司 | Driving lamp control setup between a kind of automobile daytime |
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Address after: 252000 No.261 Huanghe Road, economic development zone, Liaocheng City, Shandong Province Applicant after: Zhongtong bus Limited by Share Ltd. Address before: 252000 No.261 Huanghe Road, economic development zone, Liaocheng City, Shandong Province Applicant before: ZHONGTONG BUS HOLDING Co.,Ltd. |
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