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Vehicle instrument fuel alarm fluctuation processing method

A technology of automobile instruments and processing methods, which is applied in the direction of instruments, engine components, and engine lubrication, etc., can solve the problems of fuel alarm lamp cycle alarm and report, fuel alarm false alarm, etc., and achieve the effect of eliminating the fluctuation of fuel measurement value

Inactive Publication Date: 2013-01-16
CHANGCHUN QILI ELECTRONICS TECH
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Problems solved by technology

[0006] In addition, fuel alarms may cause false alarms under many conditions, especially when the fuel is near the alarm point, the phenomenon of cyclical alarming and de-alarming of the fuel alarm light often occurs

Method used

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  • Vehicle instrument fuel alarm fluctuation processing method
  • Vehicle instrument fuel alarm fluctuation processing method

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Embodiment Construction

[0025] Below in conjunction with embodiment, this method is described in more detail.

[0026] In the process of sampling measurement and filtering calculation of the fuel remaining, the algorithms used in the filtering calculation are limiting filtering method, median value filtering method, arithmetic mean filtering method, recursive averaging filtering method, median value averaging filtering method, limiting One or a combination of amplitude average filtering method, first-order lag filtering method, weighted average filtering method, debounce filtering method and limiting debounce filtering method. The specific algorithms of these filtering calculations and their advantages are as follows:

[0027] (1) Limiting filter method (also known as program judgment filter method)

[0028] Based on empirical judgment, determine the maximum deviation value allowed for two samplings (set to A), and judge each time a new value is detected: if the difference between this value and the...

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Abstract

The invention provides a full-digital vehicle combined instrument fuel alarm fluctuation processing method based on software processing. By using different filtering schemes, signal output fluctuation influence caused by different running states of a vehicle on a fuel sensor is reduced; and accurate measurement and judgment for low-liquid-level alarm of vehicle fuel can be accurately controlled by anti-fluctuation control over a fuel meter driving motor. By the method, fluctuation of a pointer of a fuel meter can be effectively prevented; and a mis-alarm phenomenon caused by cyclic alarm of a fuel alarm lamp is avoided.

Description

technical field [0001] The invention designs a signal processing method of an automobile full-digital instrumentation, and in particular relates to a method for processing a fuel alarm fluctuation of an automobile instrumentation. Background technique [0002] The real-time performance of the acquisition and processing of various signals is greatly improved after the full digitization of automobile instruments. However, since the acquisition of automobile fuel gauges is mainly realized by automobile fuel sensors, its main function is to dynamically measure the remaining fuel. At present, a pendulum-type float structure is mostly used] with the change of the fuel level, and different resistance output is switched on the thick film resistor to realize the sampling and measurement of the remaining fuel. Since the output signal of the sensor with this structure is mainly through the displacement of the sliding contact piece to switch the resistance values ​​corresponding to diff...

Claims

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Application Information

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IPC IPC(8): G01F23/00G01F23/30
Inventor 宋连彬李国奎于庆伟陈晓春
Owner CHANGCHUN QILI ELECTRONICS TECH
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