Knock Sensor Load Simulator

Abstract

The invention discloses a knock sensor load simulator. The knock sensor load simulator comprises a power source module, a processor module, a knock sensor simulation output module and a signal processing module; the knock sensor simulation output module outputs knock signals according to control signals outputted by the processor module; the load simulator has three working modes; in the simple working mode of the load simulator, the knock signals are obtained from a preset knock frequency waveform outputted by the processor module; in the system working mode of the load simulator, the knock signals are obtained from calculation performed by the processor module according to received engine signals; and in the failure mode of the load simulator, the processor module controls the knock signals which would be outputted by a knock sensor under a fault condition and are outputted by the knock sensor simulation output module in a simulated manner. With the knock sensor load simulator of the invention adopted, the working states of the knock sensor in an actual vehicle condition can be simulated effectively under a non-actual vehicle condition, and relative real load can be provided for the internal circuit of a product in an automobile electronic product test, and the working state of a controller can be effectively monitored in the early stage of development.

Description

technical field [0001] The invention relates to the field of automotive electronic product testing, in particular to a knock sensor load simulator. Background technique [0002] In the development process of modern automotive electronics, the reliability of the entire electronic product needs to be tested in detail, and for special loads such as knock sensors, it is impossible or difficult to provide a real test environment in the traditional test process, so the traditional test cannot Covering the reliability verification of such driving or load circuits directly leads to the failure to expose the possible risks or defects in the product design. Once serious consequences such as recalls are caused, the losses are immeasurable. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a knock sensor load simulator, which can simulate the work of the knock sensor during the testing process of the automotive electronic cont...

AI Technical Summary

Problems solved by technology

[0002] In the development process of modern automotive electronics, the reliability of the entire electronic product needs to be tested in detail. For special loads such as knock sensors, it is impossible or difficult to provide a real test environment in the traditional test process, so the traditional test cannot Covering the reliability verification of such driving or load circuits directly leads to the failure to expose the possible risks or defects in the product design. Once serious consequences such as recalls are caused, the losses are immeasurable

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