A car led turn signal system
A technology of LED turn signals and turn signals, which is applied in the use, transportation and packaging of vehicle parts and semiconductor lights, can solve the problems of environmental protection, energy saving, high power, etc., and achieve the effect of power reduction and optimized circuit design
Active Publication Date: 2021-10-19
GUANGZHOU FORDA SIGNAL
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Problems solved by technology
The power consumed is relatively large, which does not meet the requirements of environmental protection and energy saving
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[0014] The present invention will be further described below in conjunction with the accompanying drawings of the description.
[0015] The invention is designed based on the standard of ISO 13207-1 "Characteristics of Light-Emitting Diode Light Bulb Bulbs Used in Road Vehicles for Bulb Compatibility Fault Detection".
[0016] Such as figure 1 As shown, an automotive LED turn signal system includes a pulse timing detection module, a pulse current detection module, a trailer detection system module, an MCU, a turn signal load, a linear drive circuit for driving the turn signal load, and a power supply for the MCU. constant current circuit.
[0017] Such as figure 1 As shown, 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 parallel with the resistor R34 after being connected in series with the resistor R35, the voltage regulator tube Z2 is connected in ...
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An automotive LED turn signal system, including a pulse timing detection module, a pulse current detection module, a trailer detection system module, an MCU, a turn signal load, a linear drive circuit for driving the turn signal load, and a constant current circuit for supplying power to the MCU . When the turn signal is powered on, the MCU detects the start of the ISO pulse timing port using analog-to-digital conversion to accurately detect the input voltage after passing through the relay; when it detects that the input voltage meets the requirements, the current pulse output control terminal will be based on the specific pulse timing. requirements, and generate pulses that meet the timing requirements; after the input voltage is sampled by the analog-to-digital conversion voltage, MCU U3 judges the input voltage according to the sampled start trailer detection signal, so as to start or shut down the trailer detection system. MCU U3 is used in the module of the trailer detection system The function of analog-to-digital conversion can accurately detect the working status of the turn signal LED.
Description
technical field [0001] The invention relates to a car lamp, in particular to a car LED turn signal system. Background technique [0002] Traditional vehicle turn signals use halogen bulbs as light sources, and the working power of the bulbs is between 16 and 21W. However, if you want to replace traditional halogen lights with LED vehicle turn signals, you must solve two main problems: (1) LED The power of the turn signal should match and be compatible with the models of the traditional halogen lamp version, which is in line with the normal detection of the vehicle. Because to achieve the same brightness requirements, the power required for LED lighting is lower than that required for halogen lighting. For example, the working power of a halogen lamp is 21W. To achieve the same brightness, LED lighting only needs about 3W. Therefore, it is necessary to match the model of the halogen lamp version without incompatibility detection. In addition, a circuit that consumes power (...
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IPC IPC(8): H05B45/30B60Q1/34H05B44/00
CPCB60Q1/34H05B45/00Y02B20/30Y02B20/40
Inventor 刘信国
Owner GUANGZHOU FORDA SIGNAL