CN116160947A - Automobile tail lamp system and control method thereof - Google Patents
Automobile tail lamp system and control method thereof Download PDFInfo
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- CN116160947A CN116160947A CN202111410290.3A CN202111410290A CN116160947A CN 116160947 A CN116160947 A CN 116160947A CN 202111410290 A CN202111410290 A CN 202111410290A CN 116160947 A CN116160947 A CN 116160947A
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- switch
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- position lamp
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/30—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating rear of vehicle, e.g. by means of reflecting surfaces
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Abstract
The invention provides a car tail lamp system and a control method thereof, wherein the car tail lamp system comprises: a first position light disposed at a rear portion of the vehicle body at a non-trunk lid position and a second position light disposed on the trunk lid, the automobile tail light system further comprising: the switch unit is arranged in the trunk and is in different switch states when the trunk cover is opened and closed; the first switch state detection circuit is connected with the switch unit and used for acquiring the switch state of the switch unit; and the first LED driving circuit is connected with the first switch state detection circuit and is used for adjusting the brightness of the LED lamp beads in the first position lamp according to the switch state of the switch unit. After the technical scheme is adopted, the brightness adjusting process of the position lamp can be simplified, the response speed is improved, and the cost is saved.
Description
Technical Field
The invention relates to the technical field of car lamps, in particular to a car tail lamp system and a control method thereof.
Background
In the prior art, a tail lamp is usually arranged at the left side and the right side of the tail part of a vehicle, which are close to the trunk cover (a fixed side), and a tail lamp is also arranged at the left side and the right side of the trunk cover (a movable side). The position light function is contained in both the fixed side and the movable side tail lights.
For a vehicle tail lamp, it is generally required that the fixed side position lamp alone can meet the regulation requirement, and that the fixed side and the movable side position lamp together can meet the regulation requirement. Therefore, when only the position lamp on the fixed side is individually lighted (for example, when the trunk is turned on), the position lamp on the fixed side is in a state of higher brightness; when the fixed side and mobile side position lights are simultaneously lit (such as when the trunk is closed), the fixed side position lights are in a lower brightness state.
The existing technical proposal is that the trunk of the automobile and the tail lamp of the automobile are not directly connected. The trunk transmits an open or closed status signal to the vehicle BCM (Body Control Module, body control system) which recognizes and processes it. And then the BCM sends a relevant signal to the automobile tail lamp so as to adjust the brightness of the fixed side position lamp. This solution has the intermediate link BCM, creating many extra processes, wiring harnesses, equipment and costs.
Disclosure of Invention
In order to overcome the above technical drawbacks, an object of the present invention is to provide a tail lamp system for an automobile and a control method thereof, which can directly adjust the brightness of a position lamp according to the on or off state of a trunk.
The invention discloses a car tail lamp system, which comprises: a first position light disposed at a rear portion of the vehicle body at a non-trunk lid position and a second position light disposed on the trunk lid, the automobile tail light system further comprising:
the switch unit is arranged in the trunk and is in different switch states when the trunk cover is opened and closed;
the first switch state detection circuit is arranged at the first position lamp and connected with the switch unit and used for acquiring the switch state of the switch unit;
the first LED driving circuit is arranged at the first position lamp and connected with the first switch state detection circuit and is used for adjusting the brightness of the LED lamp beads in the first position lamp according to the switch state of the switch unit.
Preferably, the switch unit comprises a micro switch fixedly arranged in the trunk and a trigger part arranged on the trunk cover;
when the trunk cover is closed, the trigger part triggers the switch, and the micro switch is closed;
when the trunk lid is opened, the trigger part is separated from the switch, and the micro switch is opened.
Preferably, the first switch state detection circuit comprises a signal filtering circuit and an MCU,
the signal filtering circuit is used for filtering the analog signal input into the first switch state detection circuit;
the MCU is used for converting the analog signals into digital signals, identifying the digital signals and sending control instructions for adjusting the brightness of the LED lamp beads in the first position lamp to the first LED driving circuit according to the identification result.
Preferably, the first LED driving circuit is connected with the LED lamp beads in the second position lamp, and is used for adjusting the brightness of the LED lamp beads in the first position lamp according to the on-off state of the switch unit.
Preferably, the automobile tail lamp system further comprises:
the second switch state detection circuit is arranged at the second position lamp and is connected with the switch unit and used for acquiring the switch state of the switch unit;
the second LED driving circuit is arranged at the second position lamp and connected with the second switch state detection circuit and is used for adjusting the brightness of the LED lamp beads in the second position lamp according to the switch state of the switch unit.
The invention also discloses a control method of the tail lamp system, which is based on the tail lamp system, and comprises the following steps:
acquiring a switching state of a switching unit through a first switching state detection circuit;
and adjusting the brightness of the LED lamp beads in the first position lamp according to the switching state of the switching unit, wherein when the trunk cover is closed, the LED lamp beads in the first position lamp are controlled to be at first brightness, and when the trunk cover is opened, the LED lamp beads in the first position lamp are controlled to be at second brightness, and the first brightness is smaller than the second brightness.
Preferably, the step of acquiring the switching state of the switching unit by the first switching state detection circuit includes:
filtering the analog signal input into the first switch state detection circuit;
converting the analog signal into a digital signal;
and identifying the digital signal to acquire the switching state of the switching unit.
Preferably, the step of adjusting the brightness of the LED beads in the first position lamp according to the switching state of the switching unit includes:
according to the switching state of the switching unit, a control instruction for adjusting the brightness of the LED lamp beads in the first position lamp is sent to the first LED driving circuit;
and the first LED driving circuit adjusts the current or voltage at the LED lamp bead in the first position lamp according to the control instruction, so that the brightness of the LED lamp bead in the first position lamp is changed.
Preferably, the control method further includes:
and adjusting the brightness of the LED lamp beads in the second position lamp according to the switching state of the switching unit, wherein when the trunk cover is closed, the LED lamp beads in the second position lamp are controlled to be in a first brightness, and when the trunk cover is closed, the LED lamp beads in the second position lamp are controlled to be in a third brightness or a closing state, and the first brightness is larger than the third brightness.
After the technical scheme is adopted, compared with the prior art, the LED position lamp has the beneficial effects that the brightness of the position lamp can be directly regulated according to the state of the trunk through the arrangement of the switch unit, the switch state detection circuit and the LED driving circuit without passing through the BCM, so that the brightness regulation process of the position lamp is simplified, the wire harness is reduced, the response speed is improved, and the cost is saved.
Drawings
FIG. 1 is a schematic diagram of a tail light system of an automobile according to an embodiment of the present invention;
fig. 2 and fig. 3 are schematic diagrams of connection relation between the first switch state detection circuit and the micro switch, wherein the micro switch is in an open state in fig. 2, and the micro switch is in a closed state in fig. 3;
FIG. 4 is a schematic diagram of a first switch state detection circuit and its input/output;
fig. 5 is a schematic structural diagram of a tail light system of an automobile according to another embodiment of the present invention.
Detailed Description
Advantages of the invention are further illustrated in the following description, taken in conjunction with the accompanying drawings and detailed description.
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.
It should be understood that although the terms first, second, third, etc. may be used in this disclosure to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "at … …" or "responsive to a determination", depending on the context.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention 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 therefore should not be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and defined, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, mechanical or electrical, or may be in communication with each other between two elements, directly or indirectly through intermediaries, as would be understood by those skilled in the art, in view of the specific meaning of the terms described above.
In the following description, suffixes such as "module", "component", or "unit" for representing elements are used only for facilitating the description of the present invention, and are not of specific significance per se. Thus, "module" and "component" may be used in combination.
Referring to fig. 1, a schematic structure of a tail lamp system of an automobile according to an embodiment of the present invention includes a first position lamp provided at a rear portion of a vehicle body at a position other than a trunk lid and a second position lamp provided at the trunk lid. Specifically, the first position lamp may be located in a first tail lamp unit at a position other than a trunk lid at the rear of the vehicle body, and the first tail lamp unit is fixed in position and may include only the first position lamp, or may include other functional lamps such as a turn signal lamp, a brake lamp, a reversing lamp, and the like. The second position light may be located in a second tail light unit on the trunk lid, the second tail light unit being positionally changed with opening and closing of the trunk lid: when the trunk cover is closed, the first tail lamp unit and the second tail lamp unit are arranged side by side; when the trunk lid is opened, the second tail lamp unit is moved to a position away from the first tail lamp unit. The second tail lamp unit may include only the second position lamp, or may include other functional lamps such as a turn signal lamp, a brake lamp, and a reversing lamp.
The automobile tail lamp system further comprises a switch unit, a first switch state detection circuit and a first LED driving circuit.
The switch unit is arranged in the trunk, wherein the trunk can refer to the inside of the trunk, and can also refer to the joint of the trunk cover and the vehicle body, and the switch unit is in different switch states when the trunk cover is opened and closed. In this embodiment, the switch unit includes a micro switch fixedly disposed in the trunk and a trigger portion disposed on the trunk lid, where the trigger portion may be an independent trigger member fixed on the trunk lid or may be a protruding portion on the trunk lid. When the trunk cover is closed, the trigger part triggers the switch, and the micro switch is closed; when the trunk lid is opened, the trigger part is separated from the switch, and the micro switch is opened. Thus, the switch state of the microswitch can be used to characterize the switch state of the trunk lid. The switch unit can also be realized by other types of switches which are not micro-switches, such as a proximity switch and the like, and can be flexibly selected according to the needs of the person skilled in the art.
The first switch state detection circuit is connected with the switch unit and used for acquiring the switch state of the switch unit. Specifically, referring to fig. 2 and 3, in the present embodiment, the first switch state detection circuit is connected to the micro switch through the trunk micro switch wiring and the ground wire: when the micro switch is opened, the wiring is disconnected from the ground wire, and the circuit is not conducted; when the micro switch is closed, the wiring is connected with the ground wire, and the circuit is conducted, so that the first switch state detection circuit can judge the switch state of the micro switch according to the first switch state detection circuit.
Referring to fig. 4, the first switch state detection circuit includes a signal filtering circuit and an MCU, different analog signals are input into the first switch state detection circuit based on the switch state of the micro switch, and the signal filtering circuit is used for filtering the analog signals input into the first switch state detection circuit; the MCU is used for converting the analog signal into a digital signal, identifying the digital signal to identify the switching state of the micro switch (namely the switching state of the trunk cover), and sending a control instruction for adjusting the brightness of the LED lamp beads in the first position lamp to the first LED driving circuit according to the identification result. Specifically, when the micro switch is in a closed state (i.e. when the trunk cover is closed), the MCU sends a control instruction to the first LED driving circuit to control the LED lamp beads in the first position lamp to be at a first brightness; when the micro switch is in an open state (namely when the trunk cover is opened), the MCU sends a control instruction to the first LED driving circuit to control the LED lamp beads in the first position lamp to be in a second brightness, and the first brightness is smaller than the second brightness. That is, the first position lamp is set to a higher brightness state when the trunk lid is opened, and the first position lamp is set to a lower brightness state when the trunk lid is closed. The brightness adjustment is performed when the position lamp is turned on, and when the position lamp itself is not turned on, the opening and closing of the trunk lid does not trigger the position lamp to be turned on.
The first LED driving circuit is configured to adjust the brightness of the LED lamp bead in the first position lamp according to the on-off state of the switch unit (i.e., according to a control instruction from the first on-off state detecting circuit), where the first driving circuit may be a constant voltage driving circuit or a constant current driving circuit, and change the brightness of the LED lamp bead in the first position lamp by adjusting the current or the voltage at the LED lamp bead in the first position lamp. Preferably, the first switch state detection circuit and the first LED driving circuit may be provided at a first position lamp, that is, in a first tail lamp unit provided at a rear non-trunk lid position of the vehicle body.
Further, in this embodiment, the first LED driving circuit is connected to the LED lamp beads in the second position lamp, and is configured to adjust the brightness of the LED lamp beads in the second position lamp according to the on-off state of the switch unit (i.e., according to the control instruction from the first on-off state detecting circuit). When the trunk is opened, the regulation does not have special requirements on the brightness of the second position lamp on the trunk, so when the trunk lid is closed, the LED lamp beads in the second position lamp are controlled to be at the same first brightness as the first position lamp, when the trunk lid is opened, the LED lamp beads in the second position lamp are controlled to be at the third brightness or in a closed state, and the first brightness is larger than the third brightness, namely, the brightness of the second position lamp is regulated to be lower when the trunk lid is opened, or the second position lamp is turned off, so that electric energy is saved.
Referring to fig. 5, in another embodiment, the first LED driving circuit is not connected to the LED lamp bead in the second position lamp, and the automobile tail lamp system further includes a second switch state detecting circuit and a second LED driving circuit, where the second switch state detecting circuit is connected to the switch unit, and is configured to obtain a switch state of the switch unit; the second LED driving circuit is connected with the second switch state detection circuit and used for adjusting the brightness of the LED lamp beads in the second position lamp according to the switch state of the switch unit, specifically, the second switch state detection circuit and the second LED driving circuit are used for controlling the LED lamp beads in the second position lamp to be in the same first brightness as the first position lamp when the trunk cover is closed, and controlling the LED lamp beads in the second position lamp to be in the third brightness or in the closed state when the trunk cover is opened, and the first brightness is larger than the third brightness. The circuit structures of the second switch state detection circuit and the second LED driving circuit are substantially the same as those of the first switch state detection circuit and the first LED driving circuit, and will not be described herein again. Preferably, the first switch state detection circuit and the first LED driving circuit may be provided at a first position lamp, that is, in a first tail lamp unit provided at a non-trunk lid position at a rear portion of the vehicle body; the second switch state detection circuit and the second LED driving circuit may be disposed at a second position lamp, that is, in a second tail lamp unit disposed on the trunk lid.
The invention also provides a control method for the tail lamp system, which comprises the following steps:
s1, a first switch state detection circuit acquires the switch state of a switch unit.
The method specifically comprises the following steps: filtering the analog signal input into the first switch state detection circuit, converting the analog signal into a digital signal, identifying the digital signal to obtain the switch state of the switch unit, and sending a control instruction for adjusting the brightness of the LED lamp beads in the first position lamp according to the switch state of the switch unit;
s2: and adjusting the brightness of the LED lamp beads in the first position lamp according to the switching state of the switching unit.
Specifically, a first switch state detection circuit sends a control instruction for adjusting the brightness of LED lamp beads in a first position lamp to a first LED driving circuit according to the switch state of a switch unit; and the first LED driving circuit adjusts the current or voltage at the LED lamp bead in the first position lamp according to the control instruction, so that the brightness of the LED lamp bead in the first position lamp is changed. When the trunk lid is closed (when the switch unit is in a closed state), the LED lamp beads in the first position lamp are controlled to be at first brightness, and when the trunk lid is opened (when the switch unit is in an open state), the LED lamp beads in the first position lamp are controlled to be at second brightness, wherein the first brightness is smaller than the second brightness.
Preferably, the control method further includes:
s2': and adjusting the brightness of the LED lamp beads in the second position lamp according to the switching state of the switching unit, wherein when the trunk lid is closed, the LED lamp beads in the second position lamp are controlled to be in the same first brightness as the first position lamp, and when the trunk lid is closed, the LED lamp beads in the second position lamp are controlled to be in a third brightness or a closing state, and the first brightness is larger than the third brightness. In the embodiment of fig. 1, a first switch state detection circuit sends a control instruction for adjusting the brightness of the LED lamp beads in the second position lamp to the first LED driving circuit according to the switch state of the switch unit; the first LED driving circuit adjusts the current or voltage of the LED lamp beads in the second position lamp according to the control instruction, so that the brightness (the brightness is reduced or the brightness is turned off) of the LED lamp beads in the second position lamp is changed. In the embodiment of fig. 5, the second switch state detection circuit sends a control instruction for adjusting the brightness of the LED lamp bead in the second position lamp to the second LED driving circuit according to the switch state of the switch unit; and the second LED driving circuit adjusts the current or voltage at the LED lamp beads in the second position lamp according to the control instruction, so that the brightness (the brightness is reduced or the brightness is turned off) of the LED lamp beads in the second position lamp is changed.
Through the tail lamp system and the tail lamp method, the brightness of the first position lamp (and the second position lamp) can be directly regulated according to the switch state of the trunk cover without passing through the BCM, so that the design is effectively simplified, the wire harness, equipment and cost are reduced, and the response speed is improved.
It should be noted that the embodiments of the present invention are preferred and not limited in any way, and any person skilled in the art may make use of the above-disclosed technical content to change or modify the same into equivalent effective embodiments without departing from the technical scope of the present invention, and any modification or equivalent change and modification of the above-described embodiments according to the technical substance of the present invention still falls within the scope of the technical scope of the present invention.
Claims (9)
1. An automotive taillight system, the taillight system comprising: a first position light disposed at a rear portion of the vehicle body at a non-trunk lid position and a second position light disposed on the trunk lid, characterized in that the automobile tail light system further comprises:
the switch unit is arranged in the trunk and is in different switch states when the trunk cover is opened and closed;
the first switch state detection circuit is arranged at the first position lamp and connected with the switch unit and used for acquiring the switch state of the switch unit;
the first LED driving circuit is arranged at the first position lamp and connected with the first switch state detection circuit and is used for adjusting the brightness of the LED lamp beads in the first position lamp according to the switch state of the switch unit.
2. A tail light system for a vehicle as set forth in claim 1, wherein,
the switch unit comprises a micro switch fixedly arranged in the trunk and a trigger part arranged on the trunk cover;
when the trunk cover is closed, the trigger part triggers the switch, and the micro switch is closed;
when the trunk lid is opened, the trigger part is separated from the switch, and the micro switch is opened.
3. A tail light system for a vehicle as set forth in claim 1, wherein,
the first switch state detection circuit comprises a signal filtering circuit and an MCU,
the signal filtering circuit is used for filtering the analog signal input into the first switch state detection circuit;
the MCU is used for converting the analog signals into digital signals, identifying the digital signals and sending control instructions for adjusting the brightness of the LED lamp beads in the first position lamp to the first LED driving circuit according to the identification result.
4. A tail light system for a vehicle as set forth in claim 1, wherein,
the first LED driving circuit is connected with the LED lamp beads in the second position lamp and is used for adjusting the brightness of the LED lamp beads in the first position lamp according to the switching state of the switching unit.
5. The automotive taillight system of claim 1, further comprising:
the second switch state detection circuit is arranged at the second position lamp and is connected with the switch unit and used for acquiring the switch state of the switch unit;
the second LED driving circuit is arranged at the second position lamp and connected with the second switch state detection circuit and is used for adjusting the brightness of the LED lamp beads in the second position lamp according to the switch state of the switch unit.
6. A control method of a tail light system, characterized in that the control method is based on an automotive tail light system as claimed in any one of claims 1-5, the control method comprising:
the first switch state detection circuit acquires the switch state of the switch unit;
and adjusting the brightness of the LED lamp beads in the first position lamp according to the switching state of the switching unit, wherein when the trunk cover is closed, the LED lamp beads in the first position lamp are controlled to be at first brightness, and when the trunk cover is opened, the LED lamp beads in the first position lamp are controlled to be at second brightness, and the first brightness is smaller than the second brightness.
7. The control method according to claim 6, wherein,
the step of acquiring the switching state of the switching unit by the first switching state detection circuit includes:
filtering the analog signal input into the first switch state detection circuit;
converting the analog signal into a digital signal;
and identifying the digital signal to acquire the switching state of the switching unit.
8. The control method according to claim 7, wherein,
the step of adjusting the brightness of the LED lamp beads in the first position lamp according to the switching state of the switching unit comprises the following steps:
according to the switching state of the switching unit, a control instruction for adjusting the brightness of the LED lamp beads in the first position lamp is sent to the first LED driving circuit;
and the first LED driving circuit adjusts the current or voltage at the LED lamp bead in the first position lamp according to the control instruction, so that the brightness of the LED lamp bead in the first position lamp is changed.
9. The control method according to claim 6, wherein,
the control method further includes:
and adjusting the brightness of the LED lamp beads in the second position lamp according to the switching state of the switching unit, wherein when the trunk cover is closed, the LED lamp beads in the second position lamp are controlled to be in a first brightness, and when the trunk cover is closed, the LED lamp beads in the second position lamp are controlled to be in a third brightness or a closing state, and the first brightness is larger than the third brightness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111410290.3A CN116160947A (en) | 2021-11-25 | 2021-11-25 | Automobile tail lamp system and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111410290.3A CN116160947A (en) | 2021-11-25 | 2021-11-25 | Automobile tail lamp system and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116160947A true CN116160947A (en) | 2023-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111410290.3A Pending CN116160947A (en) | 2021-11-25 | 2021-11-25 | Automobile tail lamp system and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116160947A (en) |
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2021
- 2021-11-25 CN CN202111410290.3A patent/CN116160947A/en active Pending
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