New energy internal volume, ECU integration, test interface challenges Tengfang Zhongke TFC
ECU (Electronic Control Unit), as the brain center of the car, controls the vehicle engine, airbag, anti-lock braking system, etc. In addition to the ECU located in the engine, other locations of the car are also equipped with separate ECUs. There are about hundreds of ECUs in a car.
However, with the development of the automotive industry, ECU tends to be integrated, the delivery cycle of the whole vehicle is gradually shortened, and the production becomes complex and must be efficient. In addition to PCB board loading, silk screen printing, patch, reflow soldering and optical testing in the front section, the rear section also needs complex testing systems, such as ICT online testing, PIN pin inspection, aging testing and functional testing.
With the shortening of vehicle delivery time, high efficiency has become one of the important factors in integrated ECU production. In order to improve efficiency, PXI/PXIe test instruments are widely used in these test systems, which we also call virtual test.
The integration of test equipment poses a new challenge to the test interface.
01 How to guarantee the test effect and equipment life?
02 How to make the test reliable and easy to switch?
03 How to ensure the versatility of the interface and save equipment costs?
According to these requirements, Tengfang Zhongke can provide targeted connection solutions to meet the special needs of ECU testing.
ICT Testing
In the ICT test section, the electrical performance of the components on the board and the connection of the circuit network need to be tested. In view of this feature, the test fixture needs to be placed on the desktop to facilitate the fixing and replacement of PCB boards. At the same time, the test fixture needs to be simple and easy to switch for ECU switching.
At this time, recommend use the VH series of Tengfang Zhongke:
▌Aging test link
In the aging test link, in order to shorten the test time, the aging test cabinet needs to meet a large number of ECU tests at the same time, and must also meet the rapid switching of signal acquisition schemes for different ECUs.
This time recommend use V series:
▌ Functional Testing
In the functional test, different ECU test items are completely different, and the interface needs to meet the characteristics of easy plugging and rich signal types at the same time. At this time, V series is recommend adopted:
▌ Interface Advantage
After adopting the common interface, let's look at the advantages.
The board signal is centralized to the common platform through the cable customized by Tengfang. Only the connector needs to be locked during the first installation, and there is no need to plug and unplug the PXI board at the back. The test life can reach 20000 times.
Each time the test is switched, the connecting rod is pulled down or pushed up by 90 ° to complete the connection/disconnection. The labor-saving connecting rod mechanism is used to easily complete the insertion and removal. Compared with the traditional connection, it saves at least 90% of the time and greatly improves the test efficiency.
● Massive signals, rich types
1) The combination of pinholes of aluminum alloy frame modules is adopted, and the signal contacts are concentrated on the modules in a rectangular arrangement. One module can support up to 9600 signal channels and massive signals.
2) In addition, there are many types of test signals, such as radio frequency, optical fiber, high power, thermocouple, ordinary signal, etc. At this time, hybrid modules can be selected, such
Ordinary signal high power
Common signal coaxial
Ordinary signal micropower
Up to 14 combinations.
The receiver can be equipped with a dust cover. When not in use, it can be covered with a cover, which is dustproof, waterproof and antistatic, effectively reducing the probability of pinhole damage and improving the service life of the product.
At this point, the summary is as follows: upgrading a common and massive connection interface plays an important role in the industrial upgrading of ECU testing. So do you think this universal massive interface is suitable for other industries?
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