Signal processing device, signal processing device, vehicle and signal processing method

Abstract

The invention provides a signal processing device, a signal processing device, a vehicle and a signal processing method, including an isolation circuit, a voltage dividing circuit, a voltage stabilization circuit, a filter circuit, a coupling circuit and a control chip; the first end of the isolation circuit and the signal input end Electrically connected, the second end of the isolation circuit is electrically connected to the first end of the voltage divider circuit; the second end of the voltage divider circuit is electrically connected to the first node, and the third end of the voltage divider circuit is electrically connected to the second node; The first end of the circuit is electrically connected to the first node, the second end of the voltage stabilizing circuit is electrically connected to the second node; the first end of the filter circuit is electrically connected to the first node, and the second end of the filter circuit is electrically connected to the second node. connection; the first end of the coupling circuit is electrically connected to the first node, and the second end of the coupling circuit is electrically connected to the input end of the control chip. The invention helps to correctly judge the engine speed and crankshaft position information, and improves the possibility of normal operation of the vehicle.

Description

technical field [0001] The invention relates to the field of vehicles, in particular to a signal processing device, signal processing equipment, a vehicle and a signal processing method. Background technique [0002] In the electronic ignition control system of the vehicle engine, a crankshaft position (CKP-7X) sensor is usually installed on the right side of the engine block to sense the signal from the paired signal panel and transmit the engine speed and crankshaft position information to the ignition control module. The ignition control module Identify the correct ignition sequence, and then control the ignition coils to ignite according to the specified sequence. [0003] The signal disc is a special reluctance wheel processed on the crankshaft. There are seven cut grooves processed on the signal disc, of which six slots are evenly distributed at intervals of 60°, and the seventh slot is 10° before the sixth slot, such as figure 1 shown. The seventh slot is also calle...

AI Technical Summary

Problems solved by technology

The seventh slot is also called the synchronous slot, without the synchronous slot, the crankshaft position (CKP-7X) sensor can only transmit the engine speed signal to the ignition module, but cannot know the position information of the crankshaft

[0004] However, in practical applications, due to the aging and wear of the signal plate, other defective slots appear outside the seven slots, resulting in interference signals, resulting in abnormal signals received by the ignition module, unable to correctly judge the engine speed and crankshaft position information, resulting in abnormal ignition

Images