A light intensity test device, system and application thereof capable of withstanding high electromagnetic radiation field

Abstract

The invention provides a light intensity testing device, system and application thereof which can withstand high electromagnetic radiation field. The light intensity testing device that can withstand high electromagnetic radiation field provided by the present invention includes an optical probe and a light detection circuit, and the light detection circuit includes a photosensitive module, a voltage divider module, a power supply module, a switch module and a test module, wherein the photosensitive module, The voltage divider module, the power supply module and the switch module are connected in series to form a circuit; the test module is connected in parallel at both ends of the voltage divider module; the photosensitive module of the light detection circuit is connected to the optical probe through an optical fiber. The light intensity test device and system provided by the present invention that can withstand high electromagnetic radiation fields can directly output voltage detection values, which is convenient for testers to monitor and record. The strong test device can easily capture the measurable light and has high sensitivity.

Description

technical field [0001] The invention relates to the field of EMC compatibility testing, in particular to a light intensity testing device, system and application thereof capable of withstanding high electromagnetic radiation fields. Background technique [0002] With the widespread application of LED lights in automobiles, it has developed towards the direction of electronics, electric control and electric integration. Each electronic device and electronic control system must adapt to each other without affecting the performance of the vehicle's electromagnetic compatibility (EMC). On the other hand, it must have a certain degree of immunity to work reliably. Therefore, the EMC performance of automobile headlights has affected the safety and reliability of the vehicle and has become an important safety indicator. Traditional filament lamps are purely resistive loads. They are used under DC low voltage, have no disturbance, and have strong immunity, so there is no EMC proble...

AI Technical Summary

Problems solved by technology

The current of LED lights is very small, and the immunity is poor, especially the transient interference and narrow-band interference unique to automobiles, which have a greater impact on it, so its immunity has become an important research topic.

[0003] At this stage, the EMC test standards for automobiles in my country still mainly refer to international standards and European and American standards. The main body of the test is still the electronic devices in automobile components. There is no separate test standard for car lights, and the selection and assessment items for test methods and technical index requirements It can no longer meet the needs of the development of LED car lights, and the EMC testing of LED car lights also lacks independent research, and the EMC testing technology still needs to be perfected and improved

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