The main function of automotive radar is to measure distance. It uses ultrasonic waves to detect obstacles and the environment around the vehicle, and informs the driver of the surrounding conditions of the vehicle through sound or more intuitive pictures. It solves the trouble caused by the driver looking up and down when parking, reversing and starting the vehicle, and improves the driving safety factor.

Radars are generally placed outside the vehicle, such as on the front and rear bumpers and on the roof. When encountering sprinklers or rainy and snowy weather, the radar, especially the radar housing, needs to be airtight.

Today this article will share aboutAir tightness detection of radar housingcase.

It mainly detects the waterproof and breathable membrane on the radar housing. It is used to balance the internal and external air pressure when the vehicle is driving and has waterproof performance.

Testing equipment: HW true water seriesAir tightness detector

Solution: Design the mold and tooling according to the shape of the automotive radar housing and customer needs.

Using the indirect test method, the shell is placed into the mold. After pressing the start button, the mold fixes the shell in the designated position. The instrument enters the test program and first uses -5Kpa pressure to pump the test part for 2 seconds to detect leaks in the automotive radar waterproof and breathable film.

Then add water and pressurize the test site. The water addition time is 3S, the pressure is 10KPA, the upper leakage limit is 50pa, the pressurization time is 8S, the pressure is stabilized for 8S, and the test is 5S. If the leakage value does not exceed 100pa, it means that the air permeability and waterproofness of the automotive radar waterproof breathable membrane are in good condition, and the test results will also show OK.

familiarWaterproof testingAnyone who works knows that accuracy is the key to successful inspection.The technicians of Hirays Technology took this into consideration during research and development. The Hirays HW true water tester not only has high sensitivity and accuracy, but also can quantify the leaked data.At the same time, the alarm function is implemented for qualified and unqualified products, which can eliminate the possibility of manual misjudgment and misdetection.

Hiraysi Technology is the first in China to launch real water leak detection equipment, and has been unanimously recognized by customers.The HW true water tester improves the current shortcomings of manual confirmation and makes automated testing, judgment and production of products with waterproof and breathable membranes possible, improving efficiency for our customers while ensuring product quality.