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Car lamp turning on control strategy for inhibiting instantaneous surge current based on ambient temperature

A technology for ambient temperature and car light control, applied in emergency protection circuit devices for limiting overcurrent/overvoltage, energy-saving control technology, light circuit layout, etc. And other issues

Active Publication Date: 2015-03-04
AEROSPACE HI TECH HLDG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention can solve the problem that the current car light turn-on control method does not consider the use of ambient temperature, which leads to the limitation of car light turn-on, and provides a car light turn-on control strategy based on ambient temperature to suppress instantaneous surge current

Method used

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  • Car lamp turning on control strategy for inhibiting instantaneous surge current based on ambient temperature

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specific Embodiment approach 1

[0021] Specific implementation mode 1. Combination figure 1 To illustrate this specific implementation method, the control strategy for turning on the lights based on the ambient temperature to suppress the instantaneous surge current is realized by the following steps:

[0022] Step 1. Judging whether the status flag of the vehicle light control switch is turned on; if the judgment result is yes, then perform step 2; if the judgment result is no, then perform step 4;

[0023] Step 2. Determine the ambient temperature T of the headlights 1 Whether it is greater than 0°C; if the judgment result is yes, execute step 31; if the judgment result is no, execute step 32;

[0024] Step 31. Determine the time T when the previous headlight control switch was disconnected 2 Whether it is greater than 180s; if the judgment result is yes, then execute step 311; if the judgment result is no, then execute step 312;

[0025] Step 311: The car light control circuit sends a control signal to...

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Abstract

The invention provides a car lamp turning on control strategy for inhibiting instantaneous surge current based on ambient temperature, and relates to a car lamp turning on control method. Through the method, the problem of the existing car lamp turning on control method that as the ambient temperature is not considered, the turning on of the car lamp is limited is solved. The method comprises the steps of: according to the using ambient temperature, the interval between the former turning off and the current turning on time of the lamp filament, judging the resistance of the lamp filament; and by controlling conducting time of an FET (field effect transistor) power tube, controlling current of the car lamp, and reducing the instantaneous surge current, thereby controlling the turning on of the car lamp. The strategy is suitable for controlling the turning on of the car lamp.

Description

technical field [0001] The invention relates to a control method for turning on / off a vehicle light. Background technique [0002] The traditional on / off control of car lights is carried out through relays, but due to the complicated wiring and serious electromagnetic interference, the reliability of the system is reduced, and there are many problems in assembly and maintenance. [0003] At the same time, since the filament temperature has a linear relationship with the resistance value, the instantaneous surge current is different each time the lamp is turned on under different environments. If the instantaneous surge current is not suppressed, the lamp is easily damaged. [0004] The "Car Light Control Method and Car Light Control Circuit" with publication number CN101242693A discloses a method that can eliminate the peak circuit when the car light is turned on, but this method does not take into account the temperature of the use environment, which results in the normal ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B37/02H02H9/02
CPCY02B20/42Y02B20/40
Inventor 李宏梅王大伟刘金泽胡杨邓雷张秀颖冯钢
Owner AEROSPACE HI TECH HLDG GROUP
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