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Vehicle failure diagnostic apparatus

A technology of automobile fault and diagnostic instrument, which is applied in the direction of electrical testing/monitoring, etc., can solve problems such as inaccurate diagnosis and slow detection speed, and achieve the effects of portability, low power consumption, and high precision

Inactive Publication Date: 2011-05-18
王学生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The number of car maintenance and fault diagnosis is also increasing. At present, my country's car maintenance still relies on manual inspection and repair. The defect of manual maintenance is that not only the detection speed is slow, but also the diagnosis is often inaccurate

Method used

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  • Vehicle failure diagnostic apparatus
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Embodiment Construction

[0010] Below in conjunction with accompanying drawing, present embodiment is described further:

[0011] Depend on Figure 1-Figure 2 It can be seen that C8051F020 processor peripheral expansion circuit module, keyboard, liquid crystal display module, external memory module, CAN, LIN, communication module and PC serial communication module, power supply circuit, system reset circuit.

[0012] The CPU selected is C8051F020 single-chip microcomputer, which adopts the CIP-51 microprocessor core fully compatible with the MCS-51 instruction set, and the peak value can reach 2MIPS. And it integrates almost all analog and digital peripherals and other functional parts (including PGA, ADC, DAC, voltage comparator, voltage reference, temperature sensor, SMBus / I2C, UART) required by single-chip data acquisition or control system in one chip , SPI, timers, programmable counters, timer arrays, internal oscillators, watchdog timers and power monitors, etc. CIP-51 implements pipeline opera...

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PUM

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Abstract

The invention provides a singlechip vehicle failure diagnostic apparatus which is mainly characterized in that a C8051F020 singlechip is selected as a CPU, a CIP-51 microprocessor core completely compatible with an MCS-51 command set is adopted in the CPU, and the peak valve reaches 2MIPS (Million Instructions Per Second). Meanwhile, nearly all analog and digital peripheries and other function parts including a PGA (Professional Graphics Adapter), an ADC (Analog to Digital Converter), a DAC (Digital to Analog Converter), a voltage comparer, a voltage inference, a temperature sensor, an SMBus / I2C, an UART (Universal Asynchronous Receiver Transmitter), an SPI (Serial Peripheral Interface), a timer, a programmable counter and a timer array required by a singlechip data acquisition or control system are integrated in one chip. The invention has the advantages of being capable of realizing that parameters of different electric control systems are measured, reading failure codes of a vehicle-mounted computer, and testing an executer, and has the characteristics of low power consumption, high accuracy, convenience of carrying, and the like.

Description

technical field [0001] The invention relates to the detection field of automobile faults, in particular to an automobile fault diagnosis instrument. Background technique [0002] With the rapid development of my country's automobile industry, the number of automobiles is increasing day by day. The number of car maintenance and fault diagnosis is also increasing. At present, my country's car maintenance still relies on manual inspection and repair. The defect of manual maintenance is that not only the detection speed is slow, but also the diagnosis is often inaccurate. Contents of the invention [0003] The object of the present invention is to solve the problems existing in the above-mentioned technologies, and the present invention provides a single-chip automobile fault diagnosis instrument used in conjunction with the automobile fault self-diagnosis system. [0004] The purpose of the present invention is achieved in this way: by single-chip processor, peripheral expa...

Claims

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Application Information

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IPC IPC(8): G05B23/02
Inventor 王学生
Owner 王学生
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