Integrated detector and detection method for computer boards

Abstract

The invention relates to the electronic circuit field and discloses an integrated computer board detector. The detector communicates with host computer software, the host computer software stores signal coding data and plug coding data, the detector comprises a signal simulation system, a load simulation system and a plug simulation system, wherein the signal simulation system comprises a signal acquiring module, a signal processing module and a signal output module, the load simulation system comprises a load simulation module, a calculation module and a fault determining module, the plug simulation system comprises a data acquiring module, a matching module and a prompting module, moreover, an integrated computer board detection method is further disclosed. The integrated computer board detector integrates functions of signal simulation of various sensors, load selection simulation and power source integration, improves maintenance feasibility of the computer board to a maximum degree, further improves maintenance efficiency and versatility of the computer board and reduces maintenance cost for maintainers.

Description

technical field [0001] The invention relates to the field of electronic circuits, in particular to a computer board comprehensive tester and a test method. Background technique [0002] In the field of gasoline and diesel engine computer boards or excavator computer boards, there are various types of models, so the combinations of crankshaft signals and camshaft signals are also various. Only when the crankshaft signals and camshaft signals output by the computer board are correct and synchronized, the engine Therefore, it is necessary to simulate the synchronous crankshaft signal and camshaft signal. In the prior art, it is difficult to obtain the correct and synchronous crankshaft and camshaft timing signals, which makes the signal obtained by the engine computer board incorrect. Or the accuracy is poor, causing the engine computer board to fail to inject fuel and thus unable to dynamically query the fault. [0003] At the same time, it is difficult to find suitable loads...

AI Technical Summary

Problems solved by technology

[0002] In the field of gasoline and diesel engine computer boards or excavator computer boards, there are various types of models, so the combinations of crankshaft signals and camshaft signals are also various. Only when the crankshaft signals and camshaft signals output by the computer board are correct and synchronized, the engine Therefore, it is necessary to simulate the synchronous crankshaft signal and camshaft signal. In the prior art, it is difficult to obtain the correct and synchronous crankshaft and camshaft timing signals, which makes the signal obtained by the engine computer board incorrect. Or the accuracy is poor, causing the engine computer board to fail to inject fuel and thus unable to dynamically query the fault

[0003] At the same time, it is difficult to find suitable loads that can simulate various electrical components during the computer board inspection process, such as fuel injectors, proportional solenoid valves, stepper motors, etc., and it is even more difficult to integrate various load simulations together It is more difficult to determine the diagnosis location and diagnosis type of fault diagnosis. Therefore, how to carry out realistic load simulation and integrate it has become an urgent problem to be solved

[0004] In addition, due to the hundreds or even thousands of computer board plug shapes, the existing computer board testers have poor maintenance versatility. It is often necessary to provide a tester with a corresponding socket according to the computer board plug style during use, so one computer board tester The instrument can only be suitable for one computer board, the utilization rate is low and the use is cumbersome, and the cost is high, and the detection process causes unnecessary waste of resources

[0005] In order to solve the above technical problems, it is necessary to develop a comprehensive detector for computer boards, which can improve the authenticity and accuracy of sensor signal simulation, perform realistic load simulation and integrate them together, and can solve the problem of traditional detection The technical problem of poor versatility in the maintenance of the instrument, thereby improving the feasibility, maintenance efficiency and versatility of computer board maintenance, and reducing maintenance costs for maintenance engineers