CN110312338B - Automobile LED steering lamp system - Google Patents
Automobile LED steering lamp system Download PDFInfo
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- CN110312338B CN110312338B CN201811300477.6A CN201811300477A CN110312338B CN 110312338 B CN110312338 B CN 110312338B CN 201811300477 A CN201811300477 A CN 201811300477A CN 110312338 B CN110312338 B CN 110312338B
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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
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
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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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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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)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model provides an automobile LED indicator light system, includes pulse time sequence detection module, pulse current detection module, trailer detecting system module, MCU, indicator load, is used for driving the linear drive circuit of indicator load and is used for the constant current circuit to the MCU power supply. When the steering lamp is powered on, the MCU detects and starts an ISO pulse time sequence port, and the input voltage passing through the relay is accurately detected by adopting analog-to-digital conversion; when the input voltage is detected to meet the requirement, the current pulse output control end can generate a pulse meeting the time sequence requirement according to the specific pulse time sequence requirement; after the input voltage is sampled by analog-to-digital conversion voltage, the MCU U3 judges the size of the input voltage according to a sampled start trailer detection signal, so that the operating state of a steering lamp LED is accurately detected by utilizing the analog-to-digital conversion function of the MCU U3 in a start or stop trailer detection system module.
Description
Technical Field
The invention relates to a car lamp, in particular to an LED steering lamp system of a car.
Background
The traditional vehicle steering lamp adopts a halogen lamp bulb as a light source, the working power of the bulb is approximately 16-21W, the LED vehicle steering lamp is used for replacing the traditional halogen lamp, and two main problems are solved: (1) the power of the LED steering lamp is matched with and compatible with the vehicle model of the traditional halogen lamp version, and the vehicle-mounted normal detection is met. Because the power required by the LED illumination is lower than that required by the halogen lamp illumination to achieve the same brightness requirement, if the power of the halogen lamp is 21W, the LED illumination only needs about 3W to achieve the same brightness. So that the model of the halogen version is matched without incompatible detection situations. Additional power consuming circuitry (a steering lamp dummy load) is added to match the power detected on board the vehicle. (2) Energy conservation and environmental protection are promoted in vehicle-mounted lighting at present, and if an LED steering lamp lighting + steering lamp dummy load circuit is used, the total consumed power of the whole LED lighting is basically the same as the consumed power of the traditional halogen lamp lighting. The consumed power is large, and the requirements of environmental protection and energy saving are not met. Sufficient heat dissipation is required due to the large ratio of power consumed by the down-lamp dummy load.
Disclosure of Invention
The invention aims to solve the technical problem of providing an automobile LED steering lamp system, which can enable the LED steering lamp to replace the traditional halogen lamp steering lamp, so that the vehicle-mounted system can not generate incompatible situation, and the power consumed by the LED steering lamp system is reduced.
In order to solve the technical problems, the technical scheme of the invention is as follows: an automobile LED steering lamp system comprises a pulse time sequence detection module, a pulse current detection module, a trailer detection system module, an MCU (microprogrammed control unit), a steering lamp load, a linear driving circuit for driving the steering lamp load and a constant current circuit for supplying power to the MCU; the Trailer detection system module comprises a resistor R30, a resistor R35, a resistor R28, a resistor R34 and a voltage stabilizing tube Z2, wherein the resistor R30 is connected with a resistor R35 in series and then connected with a resistor R34 in parallel, the voltage stabilizing tube Z2 is connected with the resistor R34 in parallel, the resistor R28 is arranged between a resistor R30 and a resistor R34, the resistor R30 and the resistor R28 are respectively connected with a voltage input end D1, a pulse timing port pin ISO _ Chect of the MCU U3 is connected between the resistor R28 and the resistor R34, and a Trailer detection pin Trailer detecting pin Trailer of the MCU U3 is connected between the resistor R30 and the resistor R35; the pulse current detection module comprises a triode Q6, an MOS tube Q5 and a voltage-stabilizing source U2, a DI _ pulse pin of the MCU U3 is connected with a base electrode of the triode Q6 through a resistor R27, an emitter electrode of the triode Q6 is grounded, a collector electrode of the triode Q6 is connected with a grid electrode of the MOS tube Q5 through the resistor R22, a source electrode of the MOS tube Q5 is connected with a power supply DI +, and a drain electrode of the MOS tube Q5 is connected with an input end of the voltage-stabilizing source U2; one end of the series group of the resistor R16 and the resistor R17 is connected with the input end of the voltage stabilizing source U2, and the other end is grounded; one end of the series group of the resistor R18 and the resistor R23 is connected with the input end of the voltage stabilizing source U2, and the other end is grounded; one end of the series group of the resistor R19 and the resistor R29 is connected with the input end of the voltage stabilizing source U2, and the other end is grounded; one end of a parallel group consisting of a resistor R20 and a resistor R21 is connected with the output end of a voltage stabilizing source U2, the other end of the parallel group consisting of the resistor R20 and a resistor R21 is connected with the adjusting end of a voltage stabilizing source U2, a series group consisting of a resistor R25 and a resistor R32, and a series group consisting of the resistor R26 and a resistor R36 are respectively connected with the adjusting end of the voltage stabilizing source U2; the pulse timing detection module comprises an MOS tube TR1, an MOS tube TR2 and a triode Q7, wherein a pin Trailer _ pulse of the MCU U3 is connected with a base electrode of the triode Q7 through a resistor RK3, an emitter electrode of the triode Q7 is grounded, a collector electrode of the triode Q7 is connected with a power supply DI + through a resistor RK2 and a resistor RK1, a gate electrode of the MOS tube TR2 is connected between a resistor RK1 and a resistor RK2, a source electrode of the MOS tube TR2 is connected with the power supply DI +, a drain electrode of the MOS tube TR2 is connected with a gate electrode of the MOS tube TR1, a source electrode of the MOS tube TR1 is connected with the power supply DI + through a resistor R1, and a drain electrode of the MOS tube TR1 is grounded through a resistor R8; the series group consisting of the resistor R10 and the resistor R12 is connected in parallel with the turn signal load, and the fault detection pin LED _ Short _ Detect of the MCU U3 is connected between the resistor R10 and the resistor R12.
As an improvement, the linear driving circuit comprises an MOS transistor Q1, a voltage regulator source U1 and a triode Q3, a pin DI _ open of the MCU U3 is connected with a base of the triode Q3 through a resistor R11, an emitter of the triode Q3 is grounded, a collector of the triode Q3 is connected with a gate of the MOS transistor through the resistor R9, a voltage input terminal DI is connected with a source of the MOS transistor Q1 through a diode D1, a drain of the MOS transistor Q1 is connected with an input terminal of the voltage regulator source U1, and an output terminal of the voltage regulator source U1 is connected with a turn light load.
The constant current circuit comprises a triode Q4, a triode Q8, a voltage regulator tube Z1, a diode D3, a capacitor E1, a capacitor E2, a capacitor E3, a capacitor E4 and a capacitor C1, wherein the output end of a diode D1 is respectively connected with the collector of the triode Q4 and the collector of the triode Q8, the base of the triode Q4 is connected with the collector of the triode Q8, the emitter of the triode Q4 is connected with the voltage regulator tube Z1 through a resistor R14, the emitter of the triode Q8 is connected with a voltage regulator tube Z1, the voltage regulator tube Z1, the capacitor E1, the capacitor E2, the capacitor E3, the capacitor E4 and the capacitor C1 are connected in parallel, the diode D3 is arranged between the voltage regulator tube Z1 and the capacitor E1, and the positive electrode of the capacitor C1 is connected with a vdd pin of the MCU U3.
As a refinement, the capacitor E1, the capacitor E2, the capacitor E3 and the capacitor E4 are electrolytic capacitors.
Compared with the prior art, the invention has the following beneficial effects:
by optimizing the circuit design, the LED steering lamp can replace the traditional halogen lamp steering lamp, so that the vehicle-mounted system cannot generate incompatible condition, and the power consumed by the LED steering lamp system is reduced.
Drawings
Fig. 1 is a schematic diagram of the circuit of the present invention.
FIG. 2 is a standard timing diagram of the pulse timing detection module.
Fig. 3 is a graph of the range of the input pulse current magnitude curve.
Fig. 4 is a schematic diagram of a trailer detection system module.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
The invention is designed based on the standard of ISO 13207-1 bulb compatibility fault detection LED lamp bulb characteristics for road vehicles.
As shown in fig. 1, an automotive LED turn light system includes a pulse timing detection module, a pulse current detection module, a trailer detection system module, an MCU, a turn light load, a linear driving circuit for driving the turn light load, and a constant current circuit for supplying power to the MCU.
As shown in fig. 1, the Trailer detection system module includes a resistor R30, a resistor R35, a resistor R28, a resistor R34, and a voltage regulator tube Z2, the resistor R30 is connected in series with the resistor R35 and then connected in parallel with the resistor R34, the voltage regulator tube Z2 is connected in parallel with the resistor R34, the resistor R28 is disposed between the resistor R30 and the resistor R34, the resistor R30 and the resistor R28 are respectively connected with a voltage input terminal D1, a pulse timing port pin ISO _ check of the MCU U3 is connected between the resistor R28 and the resistor R34, and a Trailer detection pin Trailer of the MCU 3 is connected between the resistor R30 and the resistor R35. As shown in fig. 4, when the input voltage of the turn signal is less than 10V, the set analog bulb resistor is connected to the circuit, and when the input voltage is greater than 10V, the analog bulb resistor is disconnected from the circuit.
As shown in fig. 1, the pulse timing detection module includes a MOS transistor TR1, a MOS transistor TR2, and a transistor Q7, a pin Trailer _ pulse of the MCU U3 is connected to a base of the transistor Q7 through a resistor RK3, an emitter of the transistor Q7 is grounded, a collector of the transistor Q7 is connected to a power supply DI + through a resistor RK2 and a resistor RK1, a gate of the MOS transistor TR2 is connected between a resistor RK1 and the resistor RK2, a source of the MOS transistor TR2 is connected to the power supply DI +, a drain of the MOS transistor TR2 is connected to a gate of the MOS transistor TR1, a source of the MOS transistor TR1 is connected to the power supply DI + through a resistor R1, and a drain of the MOS transistor TR1 is grounded through a resistor R8; the series group consisting of the resistor R10 and the resistor R12 is connected in parallel with the turn signal load, and the fault detection pin LED _ Short _ Detect of the MCU U3 is connected between the resistor R10 and the resistor R12. As shown in fig. 2, the turn signal lamp is in the working state of the relay, and through the design of the circuit, within the working time of one cycle of the relay, the set pulse sequence is reached:
t1 is 100ms (the pulse generation timing is to be generated within the first 100ms from the start of the relay Ton); t3 ═ 95ms (the pulse generation timing must be generated 95ms before the start of the relay Ton, and cannot be less than this time);
t2 is 120ms (120 ms is the time from the start of relay Ton to the end of the pulse generation sequence);
t4 is 125ms (the time from the start of the relay Ton to the end of the pulse generation sequence is 125ms, which cannot be longer than this time);
T5-T2-T1-20 ms (the time at which the pulse timing is generated).
As shown in fig. 1, the pulse current detection module includes a transistor Q6, a MOS transistor Q5, and a voltage regulator U2, a pin DI _ pulse of the MCU U3 is connected to a base of the transistor Q6 through a resistor R27, an emitter of the transistor Q6 is grounded, a collector of the transistor Q6 is connected to a gate of the MOS transistor Q5 through a resistor R22, a source of the MOS transistor Q5 is connected to a power supply DI +, and a drain of the MOS transistor Q5 is connected to an input terminal of the voltage regulator U2; one end of the series group of the resistor R16 and the resistor R17 is connected with the input end of the voltage stabilizing source U2, and the other end is grounded; one end of the series group of the resistor R18 and the resistor R23 is connected with the input end of the voltage stabilizing source U2, and the other end is grounded; one end of the series group of the resistor R19 and the resistor R29 is connected with the input end of the voltage stabilizing source U2, and the other end is grounded; one end of a parallel group consisting of a resistor R20 and a resistor R21 is connected with the output end of a voltage stabilizing source U2, the other end of the parallel group consisting of the resistor R20 and a resistor R21 is connected with the adjusting end of a voltage stabilizing source U2, a series group consisting of a resistor R25 and a resistor R32, and a series group consisting of the resistor R26 and a resistor R36 are respectively connected with the adjusting end of the voltage stabilizing source U2. As shown in FIG. 3, the input pulse current of the turn signal lamp is required to be within the curve range from the input voltage of 9-16V; if the pulse current is beyond the curve range, the vehicle is incompatible.
As shown in fig. 1, the linear driving circuit includes a MOS transistor Q1, a regulator U1, and a transistor Q3, a pin DI _ open of the MCU U3 is connected to a base of the transistor Q3 through a resistor R11, an emitter of the transistor Q3 is grounded, a collector of the transistor Q3 is connected to a gate of the MOS transistor through the resistor R9, a voltage input terminal DI is connected to a source of the MOS transistor Q1 through a diode D1, a drain of the MOS transistor Q1 is connected to an input terminal of the regulator U1, and an output terminal of the regulator U1 is connected to a turn signal load. Therefore, the driving circuit must be a linear driving circuit, so as to ensure that the input current of the turn signal lamp is linearly increased along with the increase of the input voltage.
As shown in fig. 1, the constant current circuit includes a transistor Q4, a transistor Q8, a regulator tube Z1, a diode D3, a capacitor E1, a capacitor E2, a capacitor E3, a capacitor E4, and a capacitor C1, an output terminal of the diode D1 is connected to a collector of the transistor Q4 and a collector of the transistor Q8, a base of the transistor Q4 is connected to a collector of the transistor Q8, an emitter of the transistor Q4 is connected to the regulator tube Z1 through a resistor R14, an emitter of the transistor Q8 is connected to the regulator tube Z1, the regulator tube Z1, the capacitor E1, the capacitor E2, the capacitor E3, the capacitor E4, and the capacitor C1 are connected in parallel, the diode D3 is disposed between the regulator tube Z1 and the capacitor E1, and an anode of the capacitor C1 is connected to a vdd pin of the MCU U3. Because the pulse timing detection module performs the cycle work through the non-disconnection and disconnection states of the relay, the power supply terminal VCC of the MCU U3(PIC16F676) must keep the continuous power-on state within the time of the disconnection state of the relay, and the capacitors E1-E4 are electrolytic capacitors with relatively large capacitance values. The MCU system is required to be kept in a low power consumption state, meanwhile, a power supply system of the MCU is required to ensure that the constant current of the power supply current is unchanged when the input voltage of the steering lamp changes, and therefore the power supply system of the MCU system is controlled in a back-to-back linear constant current mode. The constant current control of the current is carried out through a triode Q4, a triode Q8 and a resistor R14, and a diode D1 → a triode Q4 → a triode Q8 → a resistor R14 → U3 enables the input current of the power supply end of the MCU to be constant.
The principle of the invention is as follows:
when the steering lamp is powered on, detecting and starting an ISO pulse time sequence port (ISO _ Chect), and accurately detecting the input voltage after passing through the relay by adopting analog-to-digital conversion; when the input voltage is detected to meet the requirement, the current pulse output control terminal (DI _ pulse) generates a pulse meeting the timing requirement according to the specific pulse timing requirement.
After the input voltage is subjected to analog-to-digital conversion voltage sampling, according to a sampled Trailer starting detection signal (Trailer), the MCU U3 judges the size of the input voltage, so that the operating state of a steering lamp LED is accurately detected by utilizing the analog-to-digital conversion function of the MCU U3 in a Trailer starting or stopping detection system module.
LED open circuit state: because the LED1 and the LED6 are in series connection, when the LED1 is open, the voltage detected by the AD1 analog-to-digital conversion end is 0V, and when the LED6 is open, the voltage detected by the AD1 is 6V, so that whether the turn signal lamp is in a fault open-circuit state or not can be accurately detected.
LED short circuit state: the fault detection of the steering lamp is carried out on an analog-to-digital conversion end (LED _ Short _ Detect) in a Short-circuit state, when the voltage at the two ends of the steering lamp LED is in a Short-circuit state, the voltage of the detection port can change, and whether the fault Short-circuit state of the steering lamp exists or not can be accurately detected through analog-to-digital conversion.
Claims (4)
1. An automobile LED steering lamp system is characterized in that: the device comprises a pulse time sequence detection module, a pulse current detection module, a trailer detection system module, an MCU U3, a steering lamp load, a linear driving circuit for driving the steering lamp load and a constant current circuit for supplying power to the MCU; the trailer detection system module comprises a resistor R30, a resistor R35, a resistor R28, a resistor R34 and a voltage-regulator tube Z2, wherein the resistor R30 is connected in series with the resistor R35 and then connected in parallel with the resistor R34, the voltage-regulator tube Z2 is connected in parallel with the resistor R34, the resistor R28 is arranged between the resistor R30 and the resistor R34, the resistor R30 and the resistor R28 are respectively connected with a voltage input end D1, a pulse timing port pin of the MCU U3 is connected between the resistor R28 and the resistor R34, and a trailer detection pin of the MCU U3 is connected between the resistor R30 and the resistor R35; the pulse current detection module comprises a triode Q6, an MOS tube Q5 and a voltage-stabilizing source U2, a pulse control pin of the MCU U3 is connected with a base electrode of the triode Q6 through a resistor R27, an emitting electrode of the triode Q6 is grounded, a collector electrode of the triode Q6 is connected with a grid electrode of the MOS tube Q5 through the resistor R22, a source electrode of the MOS tube Q5 is connected with a power supply DI +, and a drain electrode of the MOS tube Q5 is connected with an input end of the voltage-stabilizing source U2; one end of the series group of the resistor R16 and the resistor R17 is connected with the input end of the voltage stabilizing source U2, and the other end is grounded; one end of the series group of the resistor R18 and the resistor R23 is connected with the input end of the voltage stabilizing source U2, and the other end is grounded; one end of the series group of the resistor R19 and the resistor R29 is connected with the input end of the voltage stabilizing source U2, and the other end is grounded; one end of a parallel group consisting of a resistor R20 and a resistor R21 is connected with the output end of a voltage stabilizing source U2, the other end of the parallel group consisting of the resistor R20 and a resistor R21 is connected with the adjusting end of a voltage stabilizing source U2, a series group consisting of a resistor R25 and a resistor R32, and a series group consisting of the resistor R26 and a resistor R36 are respectively connected with the adjusting end of the voltage stabilizing source U2; the pulse timing detection module comprises an MOS tube TR1, an MOS tube TR2 and a triode Q7, a trailer function control pin of the MCU U3 is connected with a base electrode of the triode Q7 through a resistor RK3, an emitter electrode of the triode Q7 is grounded, a collector electrode of the triode Q7 is connected with a power supply DI + through a resistor RK2 and a resistor RK1, a grid electrode of the MOS tube TR2 is connected between a resistor RK1 and the resistor RK2, a source electrode of the MOS tube TR2 is connected with the power supply DI +, a drain electrode of the MOS tube TR2 is connected with a grid electrode of the MOS tube TR1, a source electrode of the MOS tube TR1 is connected with the power supply DI + through a resistor R1, and a drain electrode of the MOS tube TR1 is grounded through a resistor R8; the series group consisting of the resistor R10 and the resistor R12 is connected with the turn signal lamp load in parallel, and the fault detection pin of the MCU U3 is connected between the resistor R10 and the resistor R12.
2. The automotive LED turn light system of claim 1, wherein: the linear driving circuit comprises an MOS tube Q1, a voltage-stabilizing source U1 and a triode Q3, an LED switch control pin of the MCU U3 is connected with a base electrode of the triode Q3 through a resistor R11, an emitting electrode of the triode Q3 is grounded, a collector electrode of the triode Q3 is connected with a grid electrode of the MOS tube through the resistor R9, a voltage input end DI is connected with a source electrode of the MOS tube Q1 through a diode D1, a drain electrode of the MOS tube Q1 is connected with an input end of the voltage-stabilizing source U1, and an output end of the voltage-stabilizing source U1 is connected with a steering lamp load.
3. The automotive LED turn light system of claim 1, wherein: the constant current circuit comprises a triode Q4, a triode Q8, a voltage regulator tube Z1, a diode D3, a capacitor E1, a capacitor E2, a capacitor E3, a capacitor E4 and a capacitor C1, wherein the output end of the diode D1 is respectively connected with the collector of the triode Q4 and the collector of the triode Q8, the base of the triode Q4 is connected with the collector of the triode Q8, the emitter of the triode Q4 is connected with the voltage regulator tube Z1 through a resistor R14, the emitter of the triode Q8 is connected with the voltage regulator tube Z1, the voltage regulator tube Z1, the capacitor E1, the capacitor E2, the capacitor E3, the capacitor E4 and the capacitor C1 are mutually connected in parallel, the diode D3 is arranged between the voltage regulator tube Z1 and the capacitor E1, and the anode of the capacitor C1 is connected with a power supply pin of the MCU U3.
4. The automotive LED turn light system of claim 3, wherein: the capacitor E1, the capacitor E2, the capacitor E3 and the capacitor E4 are electrolytic capacitors.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811300477.6A CN110312338B (en) | 2018-11-02 | 2018-11-02 | Automobile LED steering lamp system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811300477.6A CN110312338B (en) | 2018-11-02 | 2018-11-02 | Automobile LED steering lamp system |
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| CN110312338A CN110312338A (en) | 2019-10-08 |
| CN110312338B true CN110312338B (en) | 2021-10-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102016107237A1 (en) * | 2016-04-19 | 2017-10-19 | Helbako Gmbh | Method for diagnosing the functionality of bulbs |
| CN107466274A (en) * | 2015-03-16 | 2017-12-12 | 标致雪铁龙汽车股份有限公司 | diagnostic device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201662612U (en) * | 2010-02-03 | 2010-12-01 | 上海康耐司信号设备有限公司 | Dummy load system for automotive LED turn signal lamps |
| CN206510824U (en) * | 2016-12-30 | 2017-09-22 | 上海小糸车灯有限公司 | It is a kind of to control turn signal to produce the device that sequential lights effect |
| CN207070401U (en) * | 2017-06-30 | 2018-03-02 | 台州市椒光照明有限公司 | A kind of induction type Width funtion LED lamp drive circuit |
-
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107466274A (en) * | 2015-03-16 | 2017-12-12 | 标致雪铁龙汽车股份有限公司 | diagnostic device |
| DE102016107237A1 (en) * | 2016-04-19 | 2017-10-19 | Helbako Gmbh | Method for diagnosing the functionality of bulbs |
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