CN214728477U - Steering lamp and control system thereof - Google Patents
Steering lamp and control system thereof Download PDFInfo
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- CN214728477U CN214728477U CN202120434465.3U CN202120434465U CN214728477U CN 214728477 U CN214728477 U CN 214728477U CN 202120434465 U CN202120434465 U CN 202120434465U CN 214728477 U CN214728477 U CN 214728477U
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Abstract
The utility model provides a indicator and control system thereof, wherein, this indicator's control system includes: the steering lamp driving circuit comprises a driving circuit, a load circuit corresponding to the steering lamp and a short-circuit protection circuit, wherein the driving circuit is used for controlling the load circuit to work according to a driving control signal; the short-circuit protection circuit is respectively connected with the drive circuit and the load circuit and is used for carrying out short-circuit protection on the drive circuit when the load circuit is in short circuit. According to the utility model discloses a control system of indicator, the drive circuit that can prevent the indicator effectively is burnt out because of the load circuit short circuit to control system's security has been improved greatly.
Description
Technical Field
The utility model relates to the technical field of vehicles, concretely relates to control system and a indicator of indicator.
Background
In the related art, in a control system of a turn signal lamp (for example, a vehicle turn signal lamp), once a load is short-circuited, a control circuit of the turn signal lamp is burned, and safety is low.
SUMMERY OF THE UTILITY MODEL
The utility model provides a solve above-mentioned technical problem, provide a indicator and control system thereof, can prevent effectively that the drive circuit of indicator from being burnt out because of the load circuit short circuit to control system's security has been improved greatly.
The utility model adopts the technical scheme as follows:
a control system for a turn signal, the control system comprising: the steering lamp driving circuit comprises a driving circuit, a load circuit corresponding to the steering lamp and a short-circuit protection circuit, wherein the driving circuit is used for controlling the load circuit to work according to a driving control signal; the short-circuit protection circuit is respectively connected with the drive circuit and the load circuit, and is used for carrying out short-circuit protection on the drive circuit when the load circuit is in short circuit.
The drive circuit includes: the emitting electrode of the first triode is grounded; the driving circuit comprises a first resistor and a second resistor which are connected in series, wherein one end of the first resistor is respectively connected with a base electrode of the first triode and one end of the second resistor, the other end of the second resistor is grounded, and the other end of the first resistor is also connected with an output end of the driving control signal; one end of the third resistor is connected with the collector of the first triode; a base electrode of the second triode is connected with the other end of the third resistor, and an emitting electrode of the second triode is connected with a power supply; and one end of the fourth resistor is connected with the base electrode of the second triode, and the other end of the fourth resistor is connected with the emitting electrode of the second triode.
The first triode is an NPN triode, and the second triode is a PNP triode.
The short-circuit protection circuit includes: and one end of the fuse is connected with the collector of the second triode, and the other end of the fuse is connected with the load circuit.
The short-circuit protection circuit includes: one end of the fifth resistor is connected with the other end of the fuse; one end of the sixth resistor is connected with the other end of the fifth resistor, and the other end of the sixth resistor is grounded; and the cathode of the voltage-stabilizing tube is connected with the other end of the fifth resistor, and the anode of the voltage-stabilizing tube is grounded.
The load circuit includes: one end of the seventh resistor is connected with the other end of the fuse; the anode of the first diode is connected with the other end of the seventh resistor; and the anode of the second diode is connected with the cathode of the first diode, and the cathode of the second diode is grounded.
A steering lamp comprises the steering lamp control system.
The utility model has the advantages that:
the utility model discloses can prevent effectively that the drive circuit of indicator is burnt out because of the load circuit short circuit to control system's security has been improved greatly.
Drawings
Fig. 1 is a block diagram schematically illustrating a control system of a turn signal according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a control system of a turn signal lamp according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a control system of a turn signal lamp according to another embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Fig. 1 is a block diagram of a control system for a turn signal according to an embodiment of the present invention.
As shown in fig. 1, a control system for a turn signal lamp according to an embodiment of the present invention may include a driving circuit 100, a load circuit 200 corresponding to the turn signal lamp, and a short-circuit protection circuit 300. The driving circuit 100 is configured to control the load circuit 200 to operate according to a driving control signal; the short-circuit protection circuit 300 is connected to the driver circuit 100 and the load circuit 200, respectively, and the short-circuit protection circuit 300 is used for short-circuit protection of the driver circuit 100 when the load circuit 200 is short-circuited.
Particularly, in the embodiment of the present invention, when the load circuit 200 corresponding to the turn signal lamp is driven by the driving circuit 100 to operate the turn signal lamp, the short-circuit protection circuit 300 can protect the driving circuit 100 from short-circuit, so as to prevent the driving circuit of the turn signal lamp from being burnt out due to the short-circuit of the load circuit, thereby greatly improving the safety of the control system.
According to an embodiment of the present invention, as shown in fig. 2, the driving circuit 100 includes: a first triode Q1, wherein the emitter of the first triode Q1 is grounded; the driving circuit comprises a first resistor R1 and a second resistor R2 which are connected in series, wherein one end of the first resistor R1 is respectively connected with the base of a first triode Q1 and one end of a second resistor R2, the other end of the second resistor R2 is grounded, and the other end of the first resistor R1 is also connected with the output end OUT-L of a driving control signal; one end of a third resistor R3, one end of a third resistor R3 is connected with the collector of the first triode Q1; a base electrode of the second triode Q2 is connected with the other end of the third resistor R3, and an emitting electrode of the second triode Q2 is connected with a power supply VCC; and one end of a fourth resistor R4, one end of a fourth resistor R4 is connected with the base electrode of the second triode Q2, and the other end of the fourth resistor R4 is connected with the emitting electrode of the second triode Q2.
The first transistor Q1 is an NPN transistor, and the second transistor Q2 is a PNP transistor.
According to an embodiment of the present invention, as shown in fig. 2, the short-circuit protection circuit 300 includes: and a fuse F1, wherein one end of the fuse F1 is connected with the collector of the second triode Q2, and the other end of the fuse F1 is connected with the load circuit 200.
According to an embodiment of the present invention, as shown in fig. 2, the load circuit 200 includes: one end of a seventh resistor R7 and one end of a seventh resistor R7 are connected with the other end of the fuse F1; a first diode D1, an anode of which is connected to the other end of the seventh resistor R7, a first diode D1; and the anode of the second diode D2 and the anode of the second diode D2 are connected with the cathode of the first diode D1, and the cathode of the second diode D2 is grounded.
Specifically, in practical applications, as shown in fig. 2, if the load circuit 200 corresponding to the turn signal is directly driven by the driving circuit 100 to control the operation of the load circuit 200, wherein the output terminal OUT-L of the driving control signal inputs a high level, the first transistor Q1 is turned on, the second transistor Q2 is turned on, and the power supply VCC supplies power to the first diode D1 and the second diode D2 through the second transistor Q2 and the seventh resistor R7, at this time, the first diode D1 and the second diode D2 start to operate to implement the function of the turn signal (or double flash). When the load circuit 200 is short-circuited, once the output terminal OUT-L of the driving control signal is normally high, the voltage and the current are continuously applied to the second transistor Q2, so that the second transistor Q2 is burned OUT, and even a fire is caused.
Therefore, in an embodiment of the present invention, a fuse F1 (self-recovery fuse) may be added between the driving circuit 100 and the load circuit 200. As shown in fig. 2, when the load circuit 200 is short-circuited, voltage and current are continuously applied to the second transistor Q2, so that the second transistor Q2 is short-term overloaded, but the current exceeds the trip current of the fuse F1, so that the fuse F1 is immediately opened before the second transistor Q2 is burnt out, so that the second transistor Q2 is protected. The current of the second triode Q2 can be controlled by properly adjusting the resistances of the third resistor R3 and the fourth resistor R4, and then the proper fuse F1 can be selected.
Therefore, when the load circuit 200 is short-circuited and before the second triode Q2 is burnt, the fuse F1 is immediately disconnected, so that the occurrence of faults or fire accidents is effectively avoided, and the safety is greatly improved. After the circuit fault is cleared, the fuse F1 recovers in a short time, thereby ensuring that the circuit can still operate properly.
According to an embodiment of the present invention, as shown in fig. 3, the short-circuit protection circuit 300 includes: one end of a fifth resistor R5, one end of a fifth resistor R5 is connected with the other end of the fuse F1; one end of a sixth resistor R6, one end of a sixth resistor R6 is connected with the other end of the fifth resistor R5, and the other end of the sixth resistor R6 is grounded; and the cathode of a voltage-regulator tube VD1 and the cathode of a voltage-regulator tube VD1 are connected with the other end of the fifth resistor R5, and the anode of the voltage-regulator tube VD1 is grounded.
Particularly, based on the control system of indicator lamp of above-mentioned embodiment, when load circuit 200 takes place the short circuit, in order to let the user obtain the circuit short circuit in time to in time carry out troubleshooting, the utility model discloses an embodiment has add by fifth resistance R5, sixth resistance R6 and stabilivolt VD1 in short-circuit protection circuit 300.
Specifically, whether the load circuit 200 is short-circuited can be determined by detecting the voltage detected at the terminal IN-DLJC. When the load circuit 200 is not short-circuited, if the output end OUT-L of the driving control signal inputs a high level, the fuse F1 will not trip, and therefore, the detection end IN-DLJC detects the high level; when the load circuit 200 is short-circuited, if the output terminal OUT-L of the driving control signal inputs a high level, the fuse F1 is tripped, and thus the detection terminal IN-DLJC detects a low level. Therefore, when the detection terminal IN-DLJC detects a low level, it indicates that the load circuit 200 is short-circuited, and at the moment, the input of the output terminal OUT-L of the drive control signal can be timely disconnected, and a short-circuit fault is reported.
In conclusion, according to the utility model discloses the control system of indicator controls load circuit work according to drive control signal through drive circuit to when load circuit short circuit, carry out short-circuit protection to drive circuit through short-circuit protection circuit. Therefore, the driving circuit of the steering lamp can be effectively prevented from being burnt due to the short circuit of the load circuit, and the safety of the control system is greatly improved.
Corresponding to above-mentioned embodiment, the embodiment of the utility model provides a turn signal lamp has still been provided.
According to the utility model discloses turn to lamp, the drive circuit that can prevent turn to lamp effectively is burnt out because of the load circuit short circuit to control system's security has been improved greatly.
In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. The meaning of "plurality" is two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present invention includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, each functional unit in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (7)
1. A control system for a turn signal, comprising: a driving circuit, a load circuit corresponding to the steering lamp and a short-circuit protection circuit, wherein,
the driving circuit is used for controlling the load circuit to work according to the driving control signal;
the short-circuit protection circuit is respectively connected with the drive circuit and the load circuit, and is used for carrying out short-circuit protection on the drive circuit when the load circuit is in short circuit.
2. The control system of a turn signal lamp according to claim 1, wherein the driving circuit comprises:
the emitting electrode of the first triode is grounded;
the driving circuit comprises a first resistor and a second resistor which are connected in series, wherein one end of the first resistor is respectively connected with a base electrode of the first triode and one end of the second resistor, the other end of the second resistor is grounded, and the other end of the first resistor is also connected with an output end of the driving control signal;
one end of the third resistor is connected with the collector of the first triode;
a base electrode of the second triode is connected with the other end of the third resistor, and an emitting electrode of the second triode is connected with a power supply;
and one end of the fourth resistor is connected with the base electrode of the second triode, and the other end of the fourth resistor is connected with the emitting electrode of the second triode.
3. The control system of turn signal lamps of claim 2,
the first triode is an NPN triode, and the second triode is a PNP triode.
4. The control system of a turn signal lamp according to claim 3, wherein the short circuit protection circuit comprises:
and one end of the fuse is connected with the collector of the second triode, and the other end of the fuse is connected with the load circuit.
5. The control system of a turn signal lamp according to claim 4, wherein the short circuit protection circuit comprises:
one end of the fifth resistor is connected with the other end of the fuse;
one end of the sixth resistor is connected with the other end of the fifth resistor, and the other end of the sixth resistor is grounded;
and the cathode of the voltage-stabilizing tube is connected with the other end of the fifth resistor, and the anode of the voltage-stabilizing tube is grounded.
6. The control system of a turn signal lamp according to any one of claims 4 or 5, wherein the load circuit comprises:
one end of the seventh resistor is connected with the other end of the fuse;
the anode of the first diode is connected with the other end of the seventh resistor;
and the anode of the second diode is connected with the cathode of the first diode, and the cathode of the second diode is grounded.
7. A turn signal lamp characterized by comprising a control system of the turn signal lamp according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120434465.3U CN214728477U (en) | 2021-02-26 | 2021-02-26 | Steering lamp and control system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120434465.3U CN214728477U (en) | 2021-02-26 | 2021-02-26 | Steering lamp and control system thereof |
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| Publication Number | Publication Date |
|---|---|
| CN214728477U true CN214728477U (en) | 2021-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120434465.3U Active CN214728477U (en) | 2021-02-26 | 2021-02-26 | Steering lamp and control system thereof |
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|---|---|
| CN (1) | CN214728477U (en) |
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- 2021-02-26 CN CN202120434465.3U patent/CN214728477U/en active Active
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