FCT test system based on resistance simulation

Abstract

The invention discloses an FCT test system based on resistance simulation. The FCT test system includes a test device. The test device includes a box body. A box cover of the box body is provided witha mounting base for installing an ECU control box, and the box body is also provided with a probe mechanism connected with an interface of the ECU control box and a dotting mechanism capable of dotting the ECU control box. The FCT test system further includes a control system, and the control system includes a control unit, a power supply unit and four resistors for simulating automobile back door signal resistance. According to the FCT test system, an automobile back door ECU can be tested, a test result has small deviation, the false detection rate is low, product design functions can be completely detected, the product quality is guaranteed, the automation level is high, the test efficiency is high, and the labor cost is reduced. In addition, compared with an actual vehicle test, the FCT test is low in cost and easy to operate and implement, and in the mass production phase of the vehicle back door ECU, the ECU performance of the back door of each vehicle can be tested.

Description

technical field [0001] The invention relates to the technical field of FCT testing, in particular to an FCT testing system based on resistance simulation, which is suitable for testing vehicle back door ECUs. Background technique [0002] FCT refers to a test method that provides a simulated operating environment (such as load, etc.) for the product under test to make it work in various design states, thereby obtaining parameters of various states to verify the function of the product under test. In short, it is to load the appropriate stimulus on the product under test, and measure whether the output response meets the design requirements. It is usually used for functional testing of electronic circuit board products. [0003] ECU is an electronic control unit, which is widely used in the automotive field. The ECU includes a casing and internal components, and its internal components are mainly composed of circuit boards and coils. The electronic control unit (hereinafte...

AI Technical Summary

Problems solved by technology

[0004] In order to meet consumers' higher requirements for opening or closing the back door (such as smart unlocking, remote unlocking, anti-pinch, kick unlocking, etc.), it is necessary to design a more powerful and stable ECU, and the ECU has good performance. Badness is directly related to the realization of the performance of the back door, so repeated debugging is required in the development to finally realize the expected control function, that is, the test of the vehicle back door ECU is required, and the test of the existing technology, Most of them are real vehicle tests, which are very rare, and the cost is also very high.

And in general, it is not suitable to install the ECU directly in the actual system for testing, because the ECU realized for the first time will have many defects such as software and hardware. Initial debugging, on the other hand, serious defects of ECU will also lead to system damage, resulting in unnecessary losses

[0005] In addition, the prior art test content is less, and there is no FCT device for testing the vehicle back door ECU. Although the point test fixture can realize the function test, its structure is simple, the test result has large deviation, the false test rate is high, and the design function of the product cannot be fully tested.

There are potential risks to product quality

And the level of automation is low, the test efficiency is low, and the labor cost is high

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