CN110861575A - Tail lamp system - Google Patents
Tail lamp system Download PDFInfo
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- CN110861575A CN110861575A CN201911367830.7A CN201911367830A CN110861575A CN 110861575 A CN110861575 A CN 110861575A CN 201911367830 A CN201911367830 A CN 201911367830A CN 110861575 A CN110861575 A CN 110861575A
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- reversing
- steering
- signal
- circuit
- power supply
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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
- B60Q1/34—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 change of drive direction
- B60Q1/346—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 change of drive direction with automatic actuation
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
The application discloses tail lamp system, including tail lamp circuit and control system, the tail lamp circuit includes: the reversing lamp circuit comprises a white light LED luminotron with a plurality of double-core LED lamp beads; the steering lamp circuit comprises a plurality of yellow LED light emitting tubes with double-core LED lamp beads; the control system includes: when receiving a steering power supply signal, the steering control module outputs a steering conduction signal for controlling the conduction of a steering lamp circuit; when only receiving a reversing power supply signal and not receiving a steering power supply signal, the reversing control module outputs a reversing conducting signal for controlling the reversing lamp circuit to be conducted, and when receiving the reversing power supply signal and the steering power supply signal at the same time, prohibits the reversing control module from outputting the reversing conducting signal. Utilize two-core LED lamp pearl to realize reversing lamp circuit and turn signal lamp circuit in this application, and possess the control mode of the preferred reversing lamp of turn signal lamp, avoid the normal bright white light of reversing lamp to the visual interference of turn signal lamp, improved the visual identifiability of tail lamp system, help safe driving.
Description
Technical Field
The invention relates to the field of vehicle circuit control, in particular to a tail lamp system.
Background
In the prior art, the control of fork truck tail lamp includes back light control and indicator light control, because two kinds of control independent operation usually, in case the back light signal triggers simultaneously with signals such as turn to, the white light that the back light is normally lighted produces visual interference to the luminous indicator signal of intermittent type nature to unable accurate to the external transmission turns to information, has the driving hidden danger.
Therefore, how to provide a solution to the above technical problems is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention is directed to a tail lamp system for eliminating visual interference of a turn signal from a backup lamp. The specific scheme is as follows:
a tail light system comprising a tail light circuit and a control system, wherein:
the tail light circuit includes:
the reversing lamp circuit comprises a white light LED luminotron with a plurality of double-core LED lamp beads;
the steering lamp circuit comprises a plurality of yellow LED light emitting tubes of the double-core LED lamp beads;
the control system includes:
when receiving a steering power supply signal, the steering control module outputs a steering conduction signal for controlling the conduction of the steering lamp circuit;
when receiving the power signal of backing a car and not receiving the power signal of turning to, output control the switching on signal of backing a car that the circuit of the back light switches on, when receiving the power signal of backing a car and turning to the power signal simultaneously, forbid outputting the control module of backing a car of the signal of switching on of backing a car.
Preferably, the reverse control module includes:
the reversing light circuit comprises a reversing power supply circuit, an input end, a first output end and a second output end, wherein the reversing power supply signal is received by the input end, the first output end is connected with the first end of the reversing light circuit, the second output end is connected with the second end of the reversing light circuit, and the reversing power supply circuit comprises an enabling unit for controlling the on-off of the reversing light circuit;
when only the first input end receives the reversing power supply signal and the second input end does not receive the steering power supply signal, the reversing conducting signal is output to the enabling end of the enabling unit, and when the first input end receives the reversing power supply signal and the second input end receives the steering power supply signal, the reversing control circuit forbids to output the reversing conducting signal to the enabling end.
Preferably, the reverse power supply circuit includes:
the enabling unit is a first switch tube of which the control end receives the reversing conducting signal;
the cathode is simultaneously used as an input end and a first output end of the reversing power supply circuit, and the anode is connected with the first end of the first switch tube;
the first end of the first inductor is used as the second output end of the reversing power supply circuit, and the second end of the first inductor is connected with the anode of the first diode;
the first resistor is connected with the second end of the first switch tube at the first end and grounded at the second end;
the control circuit that backs a car includes:
the power supply end is used as a first input end and an output end of the reversing control circuit to output the reversing conducting signal;
and the control end is used as a second input end of the reversing control circuit, the first end of the reversing control circuit is connected with the enabling end of the logic control unit, and the second end of the reversing control circuit is grounded.
Preferably, the turn signal lamp circuit comprises a plurality of turn signal lamp units connected in parallel, and each turn signal lamp unit comprises a plurality of yellow light LED luminous tubes connected in series; the steering control module includes:
the input end of the steering control circuit receives the steering power supply signal, and the output end of the steering control circuit outputs the steering conducting signal;
the input end of the steering power supply circuit receives the steering power supply signal, and the first output end of the steering power supply circuit is connected with the first end of the steering lamp circuit;
and the control end receives the steering conduction signal, the first end of the third switching tube is connected with the second end of the steering lamp circuit, and the second end of the third switching tube is connected with the second output end of the steering power supply circuit.
Preferably, the turn signal lamp circuit comprises a plurality of turn signal lamp units, and each turn signal lamp unit comprises a plurality of serially connected yellow light LED luminous tubes;
the steering control module includes:
the steering control circuit is used for receiving the steering power supply signal at the input end and sequentially outputting the steering conducting signals with preset duration at a plurality of output ends;
the input end of the steering power supply circuit receives the steering power supply signal, and the first output end of the steering power supply circuit is connected with the first ends of all the steering lamp units;
the control end receives the corresponding steering conduction signal, the first end is connected with the corresponding second end of the steering lamp unit, and the second end is connected with the plurality of steering switch tubes of the second output end of the steering power supply circuit.
Preferably, the reversing control circuit further comprises a voltage maintaining unit connected with the control end of the second switch tube.
Preferably, the voltage maintaining unit specifically includes:
the first end of the third resistor is used as a second input end of the reversing control circuit, and the second end of the third resistor is connected with the control end of the second switch tube;
the first end of the fourth resistor is connected with the second end of the third resistor, and the second end of the fourth resistor is grounded;
and the voltage stabilizing diode and the voltage stabilizing capacitor are connected with the fourth resistor in parallel.
Preferably, the reversing lamp circuit comprises a plurality of reversing lamp units connected in parallel, and each reversing lamp unit comprises a plurality of white light LED luminotrons connected in series.
Preferably, the control system further includes:
the first filtering module is used for outputting an original steering power supply signal when receiving the original steering power supply signal;
and the second filtering module is used for outputting the reversing power supply signal when receiving the original reversing power supply signal.
The application discloses tail lamp system, including tail lamp circuit and control system, wherein: the tail light circuit includes: the reversing lamp circuit comprises a white light LED luminotron with a plurality of double-core LED lamp beads; the steering lamp circuit comprises a plurality of yellow LED light emitting tubes of the double-core LED lamp beads; the control system includes: when receiving a steering power supply signal, the steering control module outputs a steering conduction signal for controlling the conduction of the steering lamp circuit; when receiving the power signal of backing a car and not receiving the power signal of turning to, output control the switching on signal of backing a car that the circuit of the back light switches on, when receiving the power signal of backing a car and turning to the power signal simultaneously, forbid outputting the control module of backing a car of the signal of switching on of backing a car. Utilize two core LED lamp pearls to realize reversing lamp circuit and turn signal lamp circuit in this application, and possess the control mode of the preferred reversing lamp of turn signal lamp, trigger the tail lamp system simultaneously when turning power signal and reversing power signal, only the turn signal lamp circuit is switched on, the reversing lamp circuit does not switch on, avoids the normally bright white light of reversing lamp to the visual interference of turn signal lamp, has improved the visual identifiability of tail lamp system, helps safe driving.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic diagram of a rear light system according to an embodiment of the present invention;
FIG. 2a is a structural diagram of a tail lamp circuit according to an embodiment of the present invention;
FIG. 2b is a structural diagram of a tail lamp circuit according to an embodiment of the present invention;
FIG. 3 is a structural distribution diagram of a reverse control module according to an embodiment of the present invention;
FIG. 4 is a block diagram of a steering control module according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of another embodiment of a reverse control module according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The vehicle control field, especially fork truck control field, including the back light control in the tail lamp control and turn signal lamp control, how to avoid the vision interference of back light to the turn signal lamp, eliminate the driving hidden danger, is the problem that technical staff in the field need solve. This application selects two core LED lamp pearls as the component part of tail lamp circuit to synthesize the power signal that backs a car in the control module that backs a car and turn to the power signal and send the turn-on signal that backs a car again, make the indicator be prior to the back light, the vision interference of back light can not appear, helps safe driving.
Referring to fig. 1, an embodiment of the present invention discloses a tail lamp system, including a tail lamp circuit 1 and a control system 2, wherein:
the tail light circuit 1 includes:
a turn signal lamp circuit 11 of a yellow light LED luminous tube comprising a plurality of double-core LED lamp beads;
a reversing lamp circuit 12 of a white light LED luminotron comprising a plurality of double-core LED lamp beads;
the control system 2 includes:
a steering control module 21 for outputting a steering conduction signal TS for controlling the conduction of the steering lamp circuit 11 when receiving the steering power supply signal VT;
and the reversing control module 22 is used for outputting a reversing conducting signal BS for controlling the reversing lamp circuit 12 to be conducted when only the reversing power supply signal VB is received and the steering power supply signal VT is not received, and forbidding outputting the reversing conducting signal BS when the reversing power supply signal VB and the steering power supply signal VT are received simultaneously.
Further, the reverse control module 22 includes:
the reversing power supply circuit 221 comprises an input end for receiving a reversing power supply signal VB, a first output end connected with a first end of the reversing light circuit 12, a second output end connected with a second end of the reversing light circuit 12 and an enabling unit for controlling the on-off of the reversing light circuit 12;
and the reversing control circuit 222 is used for outputting a reversing conducting signal BS to the enabling end of the enabling unit when only the first input end receives the reversing power supply signal VB and the second input end does not receive the steering power supply signal VT, and forbidding outputting the reversing conducting signal BS to the enabling end when the first input end receives the reversing power supply signal VB and the second input end receives the steering power supply signal VT.
It is understood that the reverse control circuit 222 outputs a reverse conducting signal BS to the enabling terminal of the enabling unit of the reverse power circuit 221 according to the setting scenario, so that the reverse lamp circuit 12 connected to the reverse power circuit 221 is conducted and emits white light. The setting scenario is also: when only the reversing power supply signal VB is received and the steering power supply signal VT is not received, outputting a reversing conducting signal BS; when the reverse power supply signal VB and the steering power supply signal VT are received at the same time, the steering conducting signal TS is forbidden to be output.
Similarly, the steering control module 21 includes: the steering control circuit 211 has an input end receiving the steering power signal VT and an output end outputting the steering conduction signal TS, the steering power circuit 212 has an input end receiving the steering power signal VT and two output ends connected to the steering lamp circuit 11 through the switch tube unit 213, the switch tube unit 213 is controlled by the steering conduction signal TS, and when the switch tube unit 213 receives the steering conduction signal TS, the switch tube unit 213 controls the steering lamp circuit 11 connected to the steering power circuit 212 to be conducted and emit yellow light.
Further, the control system 2 may further include:
when receiving the original steering power supply signal VT, the first filtering module outputs the steering power supply signal VT;
and when the original reversing power supply signal VB is received, the second filtering module outputs the reversing power supply signal VB.
It can be understood that the first filtering module and the second filtering module have similar structures and can be implemented by a series-parallel structure of the RLC, and detailed description of the circuit is omitted. In addition, a diode can be added to the input end or the output end of the first filtering module or the second filtering module to protect the circuit.
The double-core LED lamp bead is an LED lamp bead integrally packaged by two LED chips, the size of the double-core LED lamp bead is small, the light-emitting effect of the reversing lamp can be achieved, the light-emitting effect of the steering lamp can also be achieved, and the double-core LED lamp bead has the advantages that the inner circuit is crowded, and the arrangement space is small.
Each double-core LED lamp bead is provided with four control pins, wherein the pins 1 and 2 control the yellow LED luminotron, and the pins 3 and 4 control the white LED luminotron. Of course, besides the yellow light LED as the turn signal and the white light LED as the backup light, other colors of lamp beads can be selected, which is not limited herein, as long as the backup light and the turn signal are different in color. The connection relation of the plurality of specific double-core LED lamp beads can comprise series connection, parallel connection, series-parallel connection with a capacitor and a resistor and the like, specific needs are selected according to different application scenes, and corresponding lamp beads can be selected from the fixed double-core LED lamp beads to be not connected, so that the effects of adjusting related brightness, avoiding fault light emitting tubes or balancing load power are achieved. A common tail light circuit 1 can be as shown in fig. 2a or fig. 2 b:
the reversing light circuit comprises 4 groups of double-core LED lamp beads which are respectively connected in series in fig. 2a, each group comprises three double-core LED lamp beads, the physical positions of a white light LED luminotron and a yellow light LED luminotron in each double-core LED lamp bead in the drawing are unchanged, the first end of the reversing light circuit 11 in the drawing is VT +, each group of the reversing light units corresponds to different second ends VT 1-VT 4-, the first end of the reversing light circuit 12 is VB, and the second end of the reversing light circuit 12 is VB-.
It can be understood that, fig. 2a includes that there are two connection modes, where the reversing lamp circuit 12 includes a plurality of reversing lamp units connected in parallel, each reversing lamp unit includes a plurality of white LED light-emitting tubes connected in series, the turn lamp circuit 11 includes a plurality of turn lamp units, each turn lamp unit includes a plurality of yellow LED light-emitting tubes connected in series, and the plurality of turn lamp units can be connected in parallel or connected to different signal terminals respectively to realize light emission at different times.
Fig. 2b shares 11 twin-core LED lamp beads (LED47, LED48, LED52-LED59, LED64), and the wiring manner is as shown in fig. 2b, wherein a resistor connected in the circuit serves as a branch load, and a capacitor is connected in the circuit to protect the lamp beads.
Utilize two-core LED lamp pearl to realize reversing lamp circuit and indicator circuit in this application, and possess the control mode of the preferred reversing lamp of indicator, trigger the tail lamp system simultaneously when turning to power signal VT and reversing power signal VB, only the indicator circuit is switched on, the indicator circuit does not switch on, the white light of avoiding reversing lamp to often light is to the visual interference of indicator signal, the visual discernability nature of tail lamp system has been improved, help safe driving.
The embodiment of the invention discloses a specific tail lamp system, and compared with the previous embodiment, the technical scheme is further explained and optimized by the embodiment.
Specifically, referring to fig. 3, the reverse power circuit 221 includes:
specifically, the control end receives an enabling unit of a first switch tube Q1 of a reverse conducting signal BS;
a first diode D1 having a cathode serving as an input terminal and a first output terminal VB of the reverse power circuit 221, and an anode connected to a first terminal of the first switch tube Q1;
a first inductor L1 with a first terminal serving as a second output terminal VB-of the reverse power supply circuit 221 and a second terminal connected with the anode of the first diode;
a first resistor R1 with a first end connected with the second end of the first switch tube Q1 and a second end grounded;
the reverse control circuit 222 includes:
a logic control unit U1 with a power supply end as a first input end and an output end of the reverse control circuit 222 for outputting a reverse conducting signal BS;
the second switch tube Q2 has a control terminal as a second input terminal of the reverse control circuit 222, a first terminal connected to the enable terminal of the logic control unit U1, and a second terminal connected to ground.
Specifically, in the present embodiment, the first diode D1 is a schottky diode, and the logic control unit U1 corresponding to the above-mentioned setting situation is provided in the present embodiment, and the power terminal pin label VIN, the enable terminal pin label PWMD, the output terminal label GATE, and the labels and connection relations of other pins are processed according to a conventional method. Meanwhile, the first switch Q1 and the second switch Q2 are usually selected from controllable switches such as a triode, a MOS transistor, etc., and the first terminal and the second terminal of the switch refer to ports through which the main current flows in and out.
In this embodiment, when the steering power signal VT is low, once the reversing power signal VB is high, the second switch tube Q2 is turned on, and the potential of the PWMD pin of the logic control unit U1 is pulled down, so that the logic control unit U1 outputs the reversing conducting signal BS with high level to the first switch tube Q1, the first switch tube Q1 is turned on, and the reversing light circuit 12 is turned on to emit light; when the steering power signal VT is at a high level, the logic control unit U1 prohibits outputting the reverse conducting signal BS no matter what the state of the reverse power signal VB is, the first switch tube Q1 is always turned off, and the backup lamp circuit 12 does not emit light, thereby ensuring that the priority of the steering lamp circuit 11 is higher than that of the backup lamp circuit 12.
The embodiment of the invention discloses a specific tail lamp system, and compared with the previous embodiment, the technical scheme is further explained and optimized by the embodiment.
Specifically, the turn signal lamp circuit 11 comprises a plurality of turn signal lamp units connected in parallel, and each turn signal lamp unit comprises a plurality of yellow light LED light-emitting tubes connected in series;
the steering control module 21 now includes:
a steering control circuit 211 with an input end receiving a steering power supply signal VT and an output end outputting a steering conduction signal TS;
a steering power supply circuit 212 having an input terminal receiving a steering power supply signal VT and a first output terminal connected to the first terminal of the steering lamp circuit 11;
and a third switching tube Q3 having a control end receiving the turn-on signal TS, a first end connected to the second end of the turn signal circuit 11, and a second end connected to the second output end of the turn power supply circuit 212.
It is to be understood that the third switch Q3 is the switch tube unit 213 in the first embodiment.
It can be understood that all the turn signal lamp units are connected in parallel, corresponding to the ports VT 1-VT 4-in fig. 2a, and are combined into one port, so that the third switch tube Q3 controls all the yellow LED light-emitting tubes in the entire turn signal lamp circuit 11 to emit light uniformly.
However, considering that the lighting effect of the turn signal circuit 11 is usually flowing water flickering, that is, multiple sets of turn signal units are turned on and kept on sequentially at a preset frequency for a certain time, and the lighting time is controlled by a relay, for example, 4 sets of turn signal units are turned on and kept on sequentially at intervals of 80ms, and a period lighting time is set to be 450ms, then the turn signal unit of the first set keeps lighting for 450ms, the turn signal unit of the second set keeps lighting for 370ms, the turn signal unit of the third set keeps lighting for 290ms, and the turn signal unit of the fourth set keeps lighting for 210 ms. The above is merely an example, and in order to describe the control of the tail lamp system, there is a need for independent control of the light emission of the winker unit in the winker circuit 11. Therefore, the turn signal lamp circuit 11 includes a plurality of turn signal lamp units each including a plurality of yellow LED light emitting tubes connected in series;
the steering control module 21 now includes:
a steering control circuit 211, the input end of which receives a steering power supply signal VT and the output ends of which sequentially output steering conduction signals TS with preset duration;
a steering power supply circuit 212, the input end of which receives a steering power supply signal VT, and the first output end VT + of which is connected with the first ends of all the steering lamp units;
a plurality of steering switch tubes, the control end of which receives the corresponding steering conduction signal TS, the first end of which is connected with the second end of the corresponding steering lamp unit, and the second end of which is connected with the second output end VT-of the steering power supply circuit 212.
At this time, the number of the turn-on signals TS and the number of the turn-on switch tubes output by the turn control circuit 211 are both the same as the number of the turn signal units, as shown in fig. 4, and fig. 4 takes 4 sets of turn signal units as an example, so that the number of the turn-on signals TS and the number of the turn switch tubes are both 4, and the figure can be connected to each port in the tail lamp circuit 1 in fig. 2 a.
It is to be understood that the plurality of steering switch tubes are also referred to as the switch tube unit 213 in the first embodiment. At this time, the switching element in the switching tube unit 213 is usually selected from a controllable switching tube such as a triode, a MOS tube, etc., and the first end and the second end of the switching tube refer to ports through which the main current flows in and out.
It is understood that the steering switch tube and the steering lamp unit are connected between the first output VT + and the second output VT-of the steering power circuit 212, and the specific connection sequence, except for the connection manner indicated in fig. 2a and fig. 4, the current may also pass through the steering switch tube, the steering lamp unit, and the second output VT-of the steering power circuit 212 from the first output VT + of the steering power circuit 212.
The steering control circuit 211 is mainly implemented by a single chip microcomputer, so that the steering control circuit 211 comprises a single chip microcomputer power supply circuit 2110 and a single chip microcomputer U2, and the steering power supply circuit 212 mainly comprises a control chip U3 and related additional circuits.
Further, as shown in fig. 5, in order to keep the back light circuit 12 in a non-light-emitting state during the flashing of the running water of the turn signal or in the case where the turn power signal VT is interrupted, the back control circuit 222 further includes a voltage maintaining unit 223 connected to the control terminal of the second switching tube K2.
The voltage maintaining unit 223 specifically includes:
a third resistor R3, the first end of which is used as the second input end of the reverse control circuit 222, and the second end of which is connected with the control end of the second switch tube Q2;
a fourth resistor R4 having a first end connected to the second end of the third resistor R3 and a second end grounded;
a voltage stabilizing diode DT connected with the fourth resistor R4 in parallel and a voltage stabilizing capacitor C.
It can be understood that the voltage maintaining unit 223 charges the voltage stabilizing capacitor C when the steering power signal VT appears, and when the steering power signal VT disappears, that is, the port is at a low level, the voltage stabilizing capacitor C continues to maintain the conduction of the second switching tube Q2 until the power in the voltage stabilizing capacitor C is exhausted, and the backup lamp circuit 12 is not conducted.
It is understood that fig. 5 is only an example, and other circuit structures capable of implementing the voltage maintaining unit 223 may be applied to the present embodiment in addition to the structure of fig. 5.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The taillight system provided by the present invention is described in detail above, and the principle and the implementation of the present invention are explained in the present document by applying specific examples, and the description of the above examples is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (9)
1. A tail light system comprising a tail light circuit and a control system, wherein:
the tail light circuit includes:
the reversing lamp circuit comprises a white light LED luminotron with a plurality of double-core LED lamp beads;
the steering lamp circuit comprises a plurality of yellow LED light emitting tubes of the double-core LED lamp beads;
the control system includes:
when receiving a steering power supply signal, the steering control module outputs a steering conduction signal for controlling the conduction of the steering lamp circuit;
when receiving the power signal of backing a car and not receiving the power signal of turning to, output control the switching on signal of backing a car that the circuit of the back light switches on, when receiving the power signal of backing a car and turning to the power signal simultaneously, forbid outputting the control module of backing a car of the signal of switching on of backing a car.
2. The tail light system of claim 1, wherein the reverse control module comprises:
the reversing light circuit comprises a reversing power supply circuit, an input end, a first output end and a second output end, wherein the reversing power supply signal is received by the input end, the first output end is connected with the first end of the reversing light circuit, the second output end is connected with the second end of the reversing light circuit, and the reversing power supply circuit comprises an enabling unit for controlling the on-off of the reversing light circuit;
when only the first input end receives the reversing power supply signal and the second input end does not receive the steering power supply signal, the reversing conducting signal is output to the enabling end of the enabling unit, and when the first input end receives the reversing power supply signal and the second input end receives the steering power supply signal, the reversing control circuit forbids to output the reversing conducting signal to the enabling end.
3. The tail light system of claim 2, wherein the reverse power circuit comprises:
the enabling unit is a first switch tube of which the control end receives the reversing conducting signal;
the cathode is simultaneously used as an input end and a first output end of the reversing power supply circuit, and the anode is connected with the first end of the first switch tube;
the first end of the first inductor is used as the second output end of the reversing power supply circuit, and the second end of the first inductor is connected with the anode of the first diode;
the first resistor is connected with the second end of the first switch tube at the first end and grounded at the second end;
the control circuit that backs a car includes:
the power supply end is used as a first input end and an output end of the reversing control circuit to output the reversing conducting signal;
and the control end is used as a second input end of the reversing control circuit, the first end of the reversing control circuit is connected with the enabling end of the logic control unit, and the second end of the reversing control circuit is grounded.
4. The tail light system of claim 3, wherein the turn signal light circuit comprises a plurality of turn signal light units connected in parallel, each turn signal light unit comprising a plurality of the yellow LED light emitting tubes connected in series; the steering control module includes:
the input end of the steering control circuit receives the steering power supply signal, and the output end of the steering control circuit outputs the steering conducting signal;
the input end of the steering power supply circuit receives the steering power supply signal, and the first output end of the steering power supply circuit is connected with the first end of the steering lamp circuit;
and the control end receives the steering conduction signal, the first end of the third switching tube is connected with the second end of the steering lamp circuit, and the second end of the third switching tube is connected with the second output end of the steering power supply circuit.
5. The tail light system of claim 3, wherein the turn signal light circuit comprises a plurality of turn signal light units, each of which comprises a plurality of the yellow LED light emitting tubes connected in series;
the steering control module includes:
the steering control circuit is used for receiving the steering power supply signal at the input end and sequentially outputting the steering conducting signals with preset duration at a plurality of output ends;
the input end of the steering power supply circuit receives the steering power supply signal, and the first output end of the steering power supply circuit is connected with the first ends of all the steering lamp units;
the control end receives the corresponding steering conduction signal, the first end is connected with the corresponding second end of the steering lamp unit, and the second end is connected with the plurality of steering switch tubes of the second output end of the steering power supply circuit.
6. The tail light system of claim 5, wherein the reverse control circuit further comprises a voltage maintaining unit connected to the control terminal of the second switch tube.
7. The taillight system as claimed in claim 6, wherein the voltage maintaining unit specifically comprises:
the first end of the third resistor is used as a second input end of the reversing control circuit, and the second end of the third resistor is connected with the control end of the second switch tube;
the first end of the fourth resistor is connected with the second end of the third resistor, and the second end of the fourth resistor is grounded;
and the voltage stabilizing diode and the voltage stabilizing capacitor are connected with the fourth resistor in parallel.
8. The tail light system as set forth in any one of claims 1 to 7,
the reversing lamp circuit comprises a plurality of reversing lamp units which are connected in parallel, and each reversing lamp unit comprises a plurality of white light LED luminotrons which are connected in series.
9. The tail light system of claim 8, wherein the control system further comprises:
the first filtering module is used for outputting an original steering power supply signal when receiving the original steering power supply signal;
and the second filtering module is used for outputting the reversing power supply signal when receiving the original reversing power supply signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911367830.7A CN110861575A (en) | 2019-12-26 | 2019-12-26 | Tail lamp system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911367830.7A CN110861575A (en) | 2019-12-26 | 2019-12-26 | Tail lamp system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110861575A true CN110861575A (en) | 2020-03-06 |
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ID=69659352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911367830.7A Pending CN110861575A (en) | 2019-12-26 | 2019-12-26 | Tail lamp system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110861575A (en) |
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2019
- 2019-12-26 CN CN201911367830.7A patent/CN110861575A/en active Pending
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