Functional circuit tester (FCT)

Abstract

The invention discloses a functional circuit tester(FCT), which comprises a control box, a moving plate and a needle plate; the moving plate is located at the upper part of the control box, and the needle plate is arranged along the length direction of the control box and is perpendicular to the upper surface of the control box; the needle plate is provided with a probe corresponding to an interface of tan ECU box one by one; the moving plate and the needle plate are located at two opposite sides of the upper surface of the control box; the direction of the needle plate in opposite to the moving plate is defined as the front part, and the moving plate is provided with a moving driving mechanism for driving it to move forwards and backwards; the upper part of the moving plate is provided with a carrier plate, and left and right sides of the carrier plate are provided with lifting driving mechanisms for driving the carrier plate to ascend or descend; the upper part of the carrier plate is provided with left and right positioning blocks matched to left and right sides of the ECU box; two positioning blocks are closed to or far from each other through a clamping mechanism so as to clamp or loosen the ECU box. The FCT tester is stable in structure and high in defecting efficiency; the tester can detect the ECU boxes with different sizes, and carriers are not required to replace so that the detecting cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of testing, in particular to an FCT tester. Background technique [0002] FCT (Functional Test) refers to providing a simulated operating environment (stimulus and load) for the electronic control unit to be tested to make it work in various design states, so as to obtain the parameters of each state to verify the function of the electronic control board Good and bad ways to test. Simply put, it is to load the appropriate excitation on the electronic control board and measure whether the response of the output terminal meets the requirements. [0003] At present, the test of the microcomputer controller for automobiles, that is, "ECU (Electronic Control Unit)" usually fixes the ECU box on the carrier board, uses springs to make the needle board with probes on one side of the ECU box, and manually pushes the needle board during the test. , so that the probe is in contact with the ECU interface for testing, ...

AI Technical Summary

Problems solved by technology

[0003] At present, the test of the microcomputer controller for automobiles, that is, "ECU (Electronic Control Unit)" usually fixes the ECU box on the carrier board, uses springs to make the needle board with probes on one side of the ECU box, and manually pushes the needle board during the test. , so that the probe is in contact with the ECU interface for testing, which greatly increases the labor intensity, takes time and effort, and reduces the detection efficiency

[0004] A kind of FCT needle point test fixture of Chinese patent application No. 201110386323.5, including the bottom box, needle plate, carrier plate, top plate and downward pressure device arranged in sequence from bottom to top, although the test efficiency is improved and the operation is simple, labor-saving and stable. Good, but for products with different sizes and specifications, it is necessary to replace the module composed of the carrier plate and the top plate, which is not only time-consuming and laborious, but also increases the cost

Images