CN111225467A - Car light auto-change over device and vehicle that has it - Google Patents
Car light auto-change over device and vehicle that has it Download PDFInfo
- Publication number
- CN111225467A CN111225467A CN201811407561.8A CN201811407561A CN111225467A CN 111225467 A CN111225467 A CN 111225467A CN 201811407561 A CN201811407561 A CN 201811407561A CN 111225467 A CN111225467 A CN 111225467A
- Authority
- CN
- China
- Prior art keywords
- circuit
- lamp
- voltage
- signal
- controller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Landscapes
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
The invention discloses a car light switching device and a car with the same, wherein the car light switching device comprises: the detection circuit is used for detecting the working state of the first vehicle lamp and outputting a state signal representing the working state of the first vehicle lamp; the controller is used for outputting a control signal according to the state signal and is provided with a signal input end used for receiving the state signal and a signal output end used for outputting the control signal; and the control circuit is electrically connected with the controller and the second vehicle lamp and is used for receiving the control signal and controlling the working state of the second vehicle lamp according to the control signal. According to the vehicle lamp switching device provided by the embodiment of the invention, through the matching of the detection circuit, the controller and the control circuit, the circuit switching of the first vehicle lamp and the second vehicle lamp can be realized by using simple components, so that the working states of the first vehicle lamp and the second vehicle lamp are switched.
Description
Technical Field
The present invention relates to the field of lamp lighting, and more particularly, to a lamp switching device and a vehicle having the same.
Background
The automobile industry has different and past obvious changes since China entered the market economy era. Both the production and sales and the speed and variety of the products to be put on the market are accelerated, and the competition is increasingly severe. The light system on the automobile not only enables a driver to actually know the condition of the automobile, but also provides the necessary conditions for safe driving. The new generation of light source, LED, is not strange to many consumers, and has been further expanded to be applied to automobiles, and suitable LED products are selected according to different requirements of each application for efficiency.
An LED is a field-effect light source, which is a semiconductor device that directly converts electrical energy into light energy. The LEDs can be combined into an LED array in different modes such as series connection, parallel connection and the like so as to meet the requirement of the illumination intensity of the automobile. Aiming at the light emitting characteristics of the LED, the design of LED drive should meet the requirements of safety regulations of vehicle lamps, and in the aspect of vehicle lamp regulations, one of the regulations closely related to the LED is to meet the requirement of light distribution. In car light illumination is used, there is the phenomenon of backup light and dynamic indicator sharing light emitting area, if light simultaneously, can mix light surely, luminous flux can not reach the requirement, consequently, often will realize the illumination demand with the mode that different functions switched, and the different function switching mode of design is hardware switching mostly at present, and components and parts are more, and the structure is complicated, realizes the difficulty to the cost is higher.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
Therefore, the invention provides the car light switching device which is simple in structure, convenient to implement and low in cost.
The invention also provides a vehicle with the vehicle lamp switching device.
According to a first aspect embodiment of the present invention, a vehicle lamp switching device includes: a detection circuit for detecting an operating state of a first vehicle lamp and outputting a state signal indicative of the operating state of the first vehicle lamp; a controller for outputting a control signal in accordance with the status signal, the controller having a signal input for receiving the status signal and a signal output for outputting the control signal; and the control circuit is electrically connected with the controller and the second vehicle lamp and is used for receiving the control signal and controlling the working state of the second vehicle lamp according to the control signal.
According to the vehicle lamp switching device provided by the embodiment of the invention, through the matching of the detection circuit, the controller and the control circuit, the circuit switching of the first vehicle lamp and the second vehicle lamp can be realized by using simple components, so that the working states of the first vehicle lamp and the second vehicle lamp are switched.
According to one embodiment of the invention, the first vehicle light is a backup light and the second vehicle light is a turn signal.
According to an embodiment of the present invention, the lamp switching device further includes: the voltage stabilizing circuit is provided with a voltage input end and a voltage output end, the voltage output end is electrically connected with the controller to provide working voltage for the controller, and the voltage input end is connected with the circuit of the second car lamp to receive input voltage when the circuit of the second car lamp is powered on.
According to one embodiment of the invention, the detection circuit comprises: a first resistor having a first end connected to a driving circuit of the first lamp and a second end opposite to the first end; the second resistor is provided with a grounding end and a signal end which is electrically connected with the second end of the first resistor and the signal input end of the controller; and the voltage stabilizer is connected with the second resistor in parallel.
According to one embodiment of the invention, the control circuit comprises: the switch sub-circuit is electrically connected with the signal output end of the controller and controls the on-off state of the switch sub-circuit according to the control signal; and the control sub-circuit is electrically connected with the switch sub-circuit and conducts the working voltage of the second vehicle lamp when the switch sub-circuit is in an on state so as to enable the second vehicle lamp to work.
According to one embodiment of the invention, the switch sub-circuit comprises: the high-level conduction triode and the current-limiting resistor are connected, one end of the current-limiting resistor is connected with the high-level conduction triode, and the other end of the current-limiting resistor is connected with the signal output end of the controller.
According to one embodiment of the invention, the control sub-circuit comprises: one end of the two ends of the first divider resistor is connected with the high-level conduction triode; a second voltage dividing resistor having one of both ends electrically connected to the other of the both ends of the first voltage dividing resistor; and the grid electrode of the PMOS tube is connected with the other end of the two ends of the first voltage-dividing resistor, the drain electrode of the PMOS tube is connected with the other end of the two ends of the second voltage-dividing resistor, and the source electrode of the PMOS tube is connected with the anode of the second vehicle lamp.
A vehicle according to an embodiment of a second aspect of the invention includes the lamp switching device according to the above-described embodiment.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a block schematic diagram of a vehicle light switching device according to an embodiment of the present invention;
fig. 2 is a circuit diagram of a lamp switching device according to an embodiment of the present invention.
Reference numerals:
a lamp switching device 100; a first vehicle lamp 200; a second lamp 300;
a detection circuit 10; a controller 20; a signal input terminal 21; a signal output terminal 22; a control circuit 30; a stabilizing circuit 40.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The following specifically describes the vehicle light switching device 100 according to the embodiment of the present invention with reference to the drawings.
As shown in fig. 1 and 2, a vehicle lamp switching device 100 according to an embodiment of the present invention includes: detection circuit 10, controller 20 and control circuit 30.
Specifically, the detection circuit 10 is configured to detect an operating state of the first lamp 200 and output a state signal indicating the operating state of the first lamp 200, the controller 20 is configured to output a control signal according to the state signal, the controller 20 has a signal input terminal configured to receive the state signal and a signal output terminal configured to output the control signal, and the control circuit 30 is electrically connected to the controller 20 and the second lamp 300 and configured to receive the control signal and control the operating state of the second lamp 300 according to the control signal.
In other words, the lamp switching device 100 according to the embodiment of the present invention is mainly composed of three parts, i.e., the detection circuit 10, the controller 20 and the control circuit 30, wherein the detection circuit 10 is electrically connected to the first lamp 200, and the detection circuit 10 is capable of detecting the operating state of the first lamp 200 and sending out the operating state of the first lamp 200 in the form of a state signal. The controller 20 has a signal input terminal 21 and a signal output terminal 22, the signal input terminal 21 may be a pin 9 of the U2 part in fig. 2, the signal output terminal 22 may be a pin 6 of the U2 part in fig. 2, the signal input terminal 21 may receive a status signal sent by the detection circuit 10, the controller 20 may output a control signal according to the received status signal, and the signal output terminal 22 may output a control signal sent by the controller 20, where the controller 20 may be a single chip microcomputer. The control circuit 30 is electrically connected to the second lamp 300, and the control circuit 30 may receive a control signal from the controller 20 and control the operating state of the second lamp 300 according to the control signal.
Therefore, according to the lamp switching device 100 of the embodiment of the present invention, the detection circuit 10, the controller 20 and the control circuit 30 are matched, and the circuit switching between the first lamp 200 and the second lamp 300 can be realized by using simple components, so as to switch the working states of the first lamp 200 and the second lamp 300.
According to one embodiment of the present invention, the first vehicle light 200 is a backup light and the second vehicle light 300 is a turn signal. That is, according to the lamp switching device 100 of the embodiment of the present invention, switching between the backup lamp and the dynamic turn lamp can be conveniently achieved.
In some embodiments of the present invention, the lamp switching device 100 further includes: and the voltage stabilizing circuit 40, wherein the voltage stabilizing circuit 40 has a voltage input end and a voltage output end, the voltage output end is electrically connected with the controller 20 to provide the operating voltage for the controller 20, and the voltage input end is connected with the circuit of the second vehicle lamp 300 to receive the input voltage when the circuit of the second vehicle lamp 300 is electrified. Thus, by providing the voltage stabilizing circuit 40, the voltage stability of the entire circuit of the lamp switching device 100 can be improved.
As shown in fig. 2, the detection circuit 10 according to an embodiment of the present invention may include: the voltage regulator comprises a first resistor, a second resistor and a voltage stabilizer.
Specifically, the first resistor may be R69 in fig. 2, and the first resistor has a first end connected to the driving circuit of the first lamp 200 and a second end opposite to the first end. The second resistor may be R70 in fig. 2, and the second resistor has a ground terminal and a signal terminal for electrically connecting the second terminal of the first resistor and the signal input terminal of the controller 20. The voltage regulator may be TD2 in fig. 2, the voltage regulator being connected in parallel with the second resistor.
According to one embodiment of the present invention, the control circuit 30 includes: a switch sub-circuit and a control sub-circuit. The switch sub-circuit is electrically connected to a signal output terminal of the controller 20, and controls a switching state of the switch sub-circuit according to the control signal, and the control sub-circuit is electrically connected to the switch sub-circuit, and switches on a working voltage of the second lamp 300 when the switch sub-circuit is in an on state, so as to operate the second lamp 300.
In some embodiments of the invention, the switch sub-circuit comprises: the high level conducting triode and a current limiting resistor, one end of which is connected with the high level conducting triode, and the other end of which is connected with the signal output end of the controller 20.
In addition, the control sub-circuit includes: the PMOS transistor comprises a first voltage-dividing resistor, a second voltage-dividing resistor and a PMOS transistor. Specifically, one of the two ends of the first voltage-dividing resistor is connected to the high-level conducting transistor, one of the two ends of the second voltage-dividing resistor is electrically connected to the other of the two ends of the first voltage-dividing resistor, the gate of the PMOS transistor is connected to the other of the two ends of the first voltage-dividing resistor, the drain of the PMOS transistor is connected to the other of the two ends of the second voltage-dividing resistor, and the source of the PMOS transistor is connected to the anode of the second lamp 300.
In other words, the vehicle light switching device 100 according to the embodiment of the present invention can realize the switching between the backup light and the dynamic turn signal light by combining software and hardware, in practical applications, the priority of the backup light is higher than that of the dynamic turn signal light, when the dynamic turn signal light works, the MCU outputs a high level and a low level after detecting a signal of the backup light, and controls the PMOS transistor connected in series to the positive electrode of the turn signal light to turn off, thereby realizing the switching between the backup light and the dynamic turn signal light.
The dynamic steering lamp can be controlled by a voltage stabilizing chip and an MCU chip, a fault feedback signal of the dynamic steering lamp can be a low-level feedback signal, and the anode conduction of the dynamic steering lamp can be controlled by a PMOS (P-channel metal oxide semiconductor) tube. The positive pole input of the steering lamp is stabilized through the U1 voltage stabilizing chip to provide working voltage for the U2, when the steering lamp works normally, the triode Q9 does not work, and when the steering lamp works N-1, the Q9 is turned on, and fault feedback outputs low level. The drain electrode of the PMOS tube DQ1 is connected with the output of the anti-reverse diode, the source electrode is connected with the anode of the turn signal LED, and the grid electrode is controlled by the high-low level output by U2.
The operation of the lamp switching device 100 according to the present invention will be described in detail with reference to fig. 2.
Fig. 2 is an overall circuit diagram of the lamp switching device 100, wherein it should be noted that, in the present embodiment, the first lamp is a reversing lamp, and the second lamp is a dynamic steering lamp, and the circuits and connections of the resistors, diodes, capacitors, etc. in the circuit diagram shown in fig. 2 are understood and easily implemented by those skilled in the art except for the structures of the resistors, PMOS transistors, controllers, etc. mentioned in the above embodiments, and therefore, they are not described in detail.
When the vehicle lamp switching device 100 according to the embodiment of the invention works, the backup lamp is powered on, and the voltage is divided and limited by the R69 and the R70, so that the voltage output by the zener diode TD2 is 3.3V, and the high level is detected by the pin 9 of the U2. The dynamic steering lamp is powered on, the dynamic steering lamp is stabilized by U1 and is output to the single chip microcomputer 5V, the single chip microcomputer U2 normally works, the dynamic steering lamp is initialized, 9-pin voltage is detected after initialization is finished, if the voltage is high level, 6 pins of U2 output low level, the 6 pins are connected with the base electrode of a triode Q10 through a current limiting resistor R4, when the base electrode of the triode is low level, Q10 does not work, the voltage of a DQ1 grid drain electrode is about 0V, DQ1 is not opened, T-VIN + is not electrified, and an LED of the steering lamp is not lighted. If the reversing lamp is not powered on, the voltage of a pin 9 of the U1 is low level, a pin 6 outputs high level, at the moment, the Q10 works, a Q10 collector electrode is short-circuited to the ground, 13.5V passes through R2, R3 divides voltage, the voltage on R2 is equal to the voltage of a DQ1 grid drain electrode, about 11.5V, DQ1 is turned on, T-VIN + is electrified, an LED of a steering lamp works, and therefore switching of the reversing lamp and the dynamic steering lamp is achieved.
In summary, according to the lamp switching device 100 of the embodiment of the present invention, the detection circuit 10, the controller 20 and the control circuit 30 are used in cooperation, and the first lamp 200 and the second lamp 300 can be switched by using simple components, so as to switch the operating states of the first lamp 200 and the second lamp 300.
According to the vehicle of the embodiment of the present invention, including the lamp switching device 100 according to the above-mentioned embodiment, since the lamp switching device 100 according to the above-mentioned embodiment of the present invention has the above-mentioned technical effects, the vehicle according to the embodiment of the present invention also has the corresponding technical effects, that is, the circuit switching structure between the turn lamp and the backup lamp is simple, the implementation is convenient, the control manner is flexible, and the cost is low.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like 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 do not necessarily 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.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (8)
1. A vehicle lamp switching device characterized by comprising:
a detection circuit for detecting an operating state of a first vehicle lamp and outputting a state signal indicative of the operating state of the first vehicle lamp;
a controller for outputting a control signal in accordance with the status signal, the controller having a signal input for receiving the status signal and a signal output for outputting the control signal;
and the control circuit is electrically connected with the controller and the second vehicle lamp and is used for receiving the control signal and controlling the working state of the second vehicle lamp according to the control signal.
2. The vehicle light switching device according to claim 1, wherein the first vehicle light is a backup light, and the second vehicle light is a turn signal light.
3. The vehicular lamp switching device according to claim 1, further comprising:
the voltage stabilizing circuit is provided with a voltage input end and a voltage output end, the voltage output end is electrically connected with the controller to provide working voltage for the controller, and the voltage input end is connected with the circuit of the second vehicle lamp to receive input voltage when the circuit of the second vehicle lamp is powered on.
4. The vehicular lamp switching device according to any one of claims 1 to 3, wherein the detection circuit comprises:
a first resistor having a first end connected to a driving circuit of the first lamp and a second end opposite to the first end;
a second resistor having a ground terminal and a signal terminal for electrically connecting a second terminal of the first resistor and a signal input terminal of the controller;
and the voltage stabilizer is connected with the second resistor in parallel.
5. The vehicular lamp switching device according to any one of claims 1 to 3, wherein the control circuit comprises:
the switch sub-circuit is electrically connected with the signal output end of the controller and controls the on-off state of the switch sub-circuit according to the control signal;
and the control sub-circuit is electrically connected with the switch sub-circuit and conducts the working voltage of the second vehicle lamp to enable the second vehicle lamp to work when the switch sub-circuit is in an on state.
6. The vehicular lamp switching device according to claim 5, wherein the switch sub-circuit comprises: the high-level conduction triode and the current-limiting resistor are connected, one end of the current-limiting resistor is connected with the high-level conduction triode, and the other end of the current-limiting resistor is connected with the signal output end of the controller.
7. The lamp switching device according to claim 6, wherein the control sub-circuit comprises:
one end of two ends of the first divider resistor is connected with the high-level conduction triode;
a second voltage dividing resistor, one of two ends of which is electrically connected with the other of the two ends of the first voltage dividing resistor;
and the grid electrode of the PMOS tube is connected with the other end of the two ends of the first voltage-dividing resistor, the drain electrode of the PMOS tube is connected with the other end of the two ends of the second voltage-dividing resistor, and the source electrode of the PMOS tube is connected with the anode of the second vehicle lamp.
8. A vehicle characterized by comprising the lamp switching device according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811407561.8A CN111225467A (en) | 2018-11-23 | 2018-11-23 | Car light auto-change over device and vehicle that has it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811407561.8A CN111225467A (en) | 2018-11-23 | 2018-11-23 | Car light auto-change over device and vehicle that has it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111225467A true CN111225467A (en) | 2020-06-02 |
Family
ID=70828616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811407561.8A Pending CN111225467A (en) | 2018-11-23 | 2018-11-23 | Car light auto-change over device and vehicle that has it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111225467A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111818704A (en) * | 2020-06-04 | 2020-10-23 | 深圳市周立功单片机有限公司 | Programmable car lamp controller |
-
2018
- 2018-11-23 CN CN201811407561.8A patent/CN111225467A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111818704A (en) * | 2020-06-04 | 2020-10-23 | 深圳市周立功单片机有限公司 | Programmable car lamp controller |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5576892B2 (en) | LED lighting and disconnection detection control device | |
| US6917166B2 (en) | Vehicular lamp | |
| US10757780B2 (en) | Operating device having a test switch and status indicator | |
| US20140218953A1 (en) | Lighting device and method for operating a lighting device | |
| US7345433B2 (en) | Reversible polarity LED lamp module using current regulator and method therefor | |
| JP2011518069A (en) | Low loss input channel detector for DC power lighting system | |
| JP5576891B2 (en) | LED lighting and disconnection detection control device | |
| US9308821B2 (en) | Internal power supply control device having at least one lighting control device for a motor vehicle | |
| EP3233571B1 (en) | Two stage indicator dimming circuit controlled by pwm backlighting back feed and backlight control | |
| US7327165B2 (en) | Drive circuit of computer system for driving a mode indicator | |
| EP2881284B1 (en) | Direction-indication device | |
| CN111225467A (en) | Car light auto-change over device and vehicle that has it | |
| KR102323293B1 (en) | Automotive led lighting module | |
| CN108235506A (en) | For the constant current power driver circuit of vehicle lamp assembly | |
| CN209930548U (en) | Car light auto-change over device and vehicle that has it | |
| CN106658836A (en) | Single chip microcomputer control-based flowing steering lamp system | |
| CN207678034U (en) | Based on TLD2314EL dynamic steering circuits | |
| US10257917B2 (en) | Selective power supply device for incandescent lamp or light-emitting diode | |
| JP2011073509A (en) | On-vehicle lamp lighting control circuit | |
| JP2012245799A (en) | Drive control device | |
| CN209972295U (en) | Car light current increasing circuit and vehicle | |
| CN110312338B (en) | Automobile LED steering lamp system | |
| CN111845534A (en) | Car light current increasing circuit and vehicle | |
| US11871492B2 (en) | Light emitting element drive device and light emitting system | |
| CN213244409U (en) | Control circuit and car light |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |