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Breakthrough in sealing test of automobile controller

With the popularization of automobile and the improvement of automobile technology, people have higher and higher requirements for automobile safety. As the "brain of automobile", the reliability and safety of automobile controller is very important. Especially in the special weather (such as precipitation and wet weather), the normal and stable operation can ensure the normal function of related vehicle electronic equipment. One or more connectors are generally arranged on the shell of the existing vehicle controller to cooperate with the connector of the transmission line, so as to realize the connection between the on-board electronic equipment and other electronic devices. As the "bridge" of communication with the outside world, the waterproof and sealing design of connector is the most important.

Therefore, it is very necessary to detect the tightness of automobile controller, and Harris technology has also conducted in-depth research on the tightness detection of automobile controller. Now, an intelligent tightness detector has been developed and put into production line. The following is the detection case:

1、 Testing difficulties of automobile controller

The test is an ordinary car controller, its shell is completely closed state. It is a polygonal body with irregular shape. There are three protruding connectors on the head. There are two protruding semicircles on the left and right sides of the car controller. There are two protruding small squares facing upward. There are two concave strips on the bottom of the square. Such a shape is unfavorable to the sealing detection of tooling, and it is easy to produce the deviation of detection results due to air leakage.

2、 How to detect the seal of automobile controller

In the face of this situation, Harris specially uses a mold to hold this type of automobile controller, so that the mold can form a surrounded state for the automobile controller, and a closed detection space will be formed after the upper and lower molds are closed. It is beneficial to realize the indirect detection of the automobile controller, and the mold can also protect the automobile controller from damage in the detection, realize the non-destructive detection, and reduce the cost of the enterprise.


Automobile controller sealing tester

At this time, after the tooling connected with the mold is started, a certain volume of gas is injected into the mold through the air source. When the air pressure is detected, the air supply is automatically cut off and the pressure is stabilized. The airtightness detection system of Harris technology will monitor the air pressure in the mold to determine the tightness by the leakage.

3、 Display and parameter table of automobile controller sealing tester


Automobile controller sealing tester

1. High sensitivity pressure sensing and regulating unit, combined with advanced differential pressure software algorithm, the minimum resolution can reach 0.1pA, which has won the national patent.

2. The patented technology of "IVT pneumatic sealing valve island" independently developed by Harris greatly improves the test accuracy, ensures the stability of the instrument, and greatly improves the inflation speed.

3. Multiple test functions: the instrument integrates two positive and negative pressure forms and eight test methods: two pressure forms and five test methods can be written into more than 20 test functions.

4. It has more than 200 groups of subroutines. Each group of subroutines can be programmed independently, selected and combined to meet various complex test requirements.

5. Full touch large screen intelligent operating system, graphical UI design based on detection process, simple and clear operation interface, easy to teach and learn.

6. A variety of pressure regulating components and ranges are available. Wide range of air pressure (- 80kPa & amp; mdash; 1MPa) optional. Selecting electronic pressure regulating valve can realize multi group pressure sequence test.

7. Multiple communication interfaces: built in RS232 serial port, RJ45 network port, USB communication interface, LTP external I / O control port, supporting a variety of communication protocols.

8. Bar code scanning function and printer can be purchased to facilitate product data management and quality traceability. Up to 200000 historical records of the instrument can be exported to the computer in batches.

9. The standard volume identification function can automatically identify the volume of the sample to be tested, and measure and judge the leakage rate in the way of volume.

10. Ultra high stability, and ease of use, after a rigorous test of the market.

11. A variety of accessories are available, including inflatable bypass, quick connector and standard leak. At the same time, the instrument supports third-party calibration and can issue calibration report.


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