Universal automobile gauge signal converter and conversion method thereof

A technology for signal converters and automotive instrumentation, applied in vehicle components, transportation and packaging, etc., can solve problems such as engine tachometer and speedometer indication errors, speedometer display errors, and difficulty in reaching economical speeds, etc., to achieve universality , Guarantee the effect of versatility

Active Publication Date: 2013-03-13
SHANDONG ACAD OF SCI INST OF AUTOMATION
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, vehicle modification is becoming more and more common. Engine, gearbox and tire modification will cause errors in the indication of the engine tachometer and speedometer. The inconsistent number of speed pulses before and after the engine modification will cause errors in the display of the tachometer, resu

Method used

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  • Universal automobile gauge signal converter and conversion method thereof
  • Universal automobile gauge signal converter and conversion method thereof

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[0045] The present invention will be further described below in conjunction with the drawings and embodiments.

[0046] figure 1 Among them, the signal converter mainly includes five parts: MCU with data FLASH inside, pulse acquisition circuit with adjustable filter frequency, pulse output circuit, RS232 serial communication circuit, LED indicator circuit, RS232 serial communication to realize parameter configuration, LED Indicate whether the converter has downloaded the parameters, the hardware structure of the converter is as figure 1 Shown. The pulse collection circuit with adjustable filter frequency collects the speed pulse signal of the engine speed sensor and the speed pulse signal of the vehicle speed sensor respectively. After processing by the MCU, the pulse output circuit outputs the speed pulse signal and the speed pulse signal to the tachometer and speedometer on the dashboard; At the same time, the MCU communicates with the PC through the communication serial port; ...

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Abstract

The invention relates to a universal automobile gauge signal converter and an automobile gauge signal conversion method. The converter acquires and calculates the rotating speed and the vehicle speed pulse of a transformed engine, and calculates and outputs the rotating speed pulse and the vehicle speed pulse that are matched with an original automobile gauge, so that the original automobile gauge can continue to accurately display the information of the rotating speed and the vehicle speed of the engine in real time. The converter comprises an MCU (microprogrammed control unit) internally provided with a data FLASH, a pulse acquisition circuit with adjustable filter frequency, a pulse output circuit and a communication serial port, wherein the pulse acquisition circuit with the adjustable filter frequency respectively acquires a rotating speed pulse signal of an engine rotating speed sensor and a vehicle speed pulse signal of a vehicle speed sensor, the MCU processes the signals and outputs the rotating speed pulse signal and the vehicle speed pulse signal through a pulse output circuit to a rotating speed gauge and a vehicle speed gauge of an instrument panel, meanwhile, the MCU further communicates with a PC machine through the communication serial port, wherein the pulse acquisition circuit is internally provided with an RC (remote control) low-pass filter circuit, and the RC low-pass filter circuit adopts a digital potentiometer with a fixed capacitance and an adjustable resistance.

Description

technical field [0001] The invention belongs to the technical field of automobile electronics, and more specifically relates to a general automobile instrument signal converter and a conversion method thereof. Background technique [0002] In the car dashboard, the engine tachometer and the speedometer are two very important gauges. The tachometer collects the pulse of the engine speed sensor to indicate the current engine speed and reflects the working condition of the engine. The speedometer collects the pulse of the speed sensor to indicate the current speed of the vehicle. and its changes. Both the speed sensor and the vehicle speed sensor have a key parameter called the number of pulses, which means that when the engine or the wheel rotates one revolution, several square wave pulses are output. N) square wave pulses. The tachometer calculates the current speed based on the collected pulse frequency of the engine speed sensor and the number of pulses of the speed senso...

Claims

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Application Information

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IPC IPC(8): B60K35/00
Inventor 马建辉王知学刘源杨王岗
Owner SHANDONG ACAD OF SCI INST OF AUTOMATION
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