Vehicle digital instrument based on single-chip microcomputer design

Abstract

The invention discloses a vehicle digital instrument based on single-chip microcomputer design. The vehicle digital instrument comprises a mainboard, a single-chip microcomputer arranged in the middle of the top surface of the mainboard, a signal acquisition module arranged on one side of the single-chip microcomputer, a liquid crystal display module arranged on the upper side of the single-chip microcomputer, a keyboard input module arranged on one side of the bottom of the liquid crystal display module, and a power supply module arranged on one side of the mainboard; a complex programmable logic device module is arranged on one side, far away from the signal acquisition module, of the single-chip microcomputer on the top surface of the mainboard; an inter-module interface is formed in the edge of the top surface of the mainboard; according to the invention, through the arrangement of the single-chip microcomputer, the signal acquisition module, the liquid crystal display module, the keyboard input module, the power supply module, the complex programmable logic device module and the inter-module interface, the design of the single-chip microcomputer application system becomes simple and rapid through a peripheral chip and an interface circuit; the service life of the single-chip microcomputer is further prolonged through marketing of the novel single-chip microcomputer and support of high-level languages such as C, the cost performance of the single-chip microcomputer is very high through long-term and stable development of the single-chip microcomputer, and production cost is greatly saved.

Description

technical field [0001] The invention relates to the field of digital instruments for vehicles, in particular to a digital instrument for vehicles designed based on a single-chip microcomputer. Background technique [0002] The single-chip microcomputer system is an integrated circuit chip, which uses VLSI technology to combine the central processing unit CPU with data processing capabilities, random access memory RAM, read-only memory ROM, various I / O ports and interrupt systems, timers / counters A small but complete microcomputer system composed of integrated functions (may also include display drive circuit, pulse width modulation circuit, analog multiplexer, A / D converter, etc.) on a silicon chip, in the field of industrial control widely used. [0003] Vehicle instrumentation is an important interface and interface for information exchange between the driver and the car, and is an important guarantee for safe driving of the vehicle. With the wide application of electroni...

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Problems solved by technology

[0004] However, at present, the digitization level of domestic vehicle instruments is not high, and most of the instruments are still analog, and most of the analog instrument heads are large in size and large in number, which makes the display system crowded and affects the appearance; some other analog instruments are faulty. The rate is high, which increases the economic burden of the user and reduces the safety factor of the vehicle.

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