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2024年5月18日发(作者：)

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Ultrasonic ranging system design

Publication title: Sensor Review. Bradford: .

ABSTRACT: Ultrasonic ranging technology has wide using worth in many fields,

such as the industrial locale, vehicle navigation and sonar engineering. Now it has been

used in level measurement, self-guided autonomous vehicles, fieldwork robots

automotive navigation, air and underwater target detection, identification, location and so

on. So there is an important practicing meaning to learn the ranging theory and ways

deeply. To improve the precision of the ultrasonic ranging system in hand, satisfy the

request of the engineering personnel for the ranging precision, the bound and the usage, a

portable ultrasonic ranging system based on the single chip processor was developed.

Keywords: Ultrasound, Ranging System, Single Chip Processor

1. Introductive

With the development of science and technology, the improvement of people’s

standard of living, speeding up the development and construction of the city. Urban

drainage system have greatly developed their situation is construction improving.

However, due to historical reasons many unpredictable factors in the synthesis of her

time, the city drainage system. In particular drainage system often lags behind urban

construction. Therefore, there are often good building excavation has been building

facilities to upgrade the drainage system phenomenon. It brought to the city sewage, and

it is clear to the city sewage and drainage culvert in the sewage treatment system.

Comfort is very important to people’s lives. Mobile robots designed to clear the drainage

culvert and the automatic control system Free sewage culvert clear guarantee robots, the

robot is designed to clear the culvert sewage to the core. Control system is the core

component of the development of ultrasonic range finder. Therefore, it is very important

to design a good ultrasonic range finder.

2. A principle of ultrasonic distance measurement

The application of AT89C51:

SCM is a major piece of computer components are integrated into the chip micro-

computer. It is a multi-interface and counting on the micro-controller integration, and

intelligence products are widely used in industrial automation. and MCS-51

microcontroller is a typical and representative.

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Microcontrollers are used in a multitude of commercial applications such as

modems, motor-control systems, air conditioner control systems, automotive engine and

among others. The high processing speed and enhanced peripheral set of these

microcontrollers make them suitable for such high-speed event-based applications.

However, these critical application domains also require that these microcontrollers are

highly reliable. The high reliability and low market risks can be ensured by a robust

testing process and a proper tools environment for the validation of these

microcontrollers both at the component and at the system level. Intel Plaform

Engineering department developed an object-oriented multi-threaded test environment for

the validation of its AT89C51 automotive microcontrollers. The goals of this

environment was not only to provide a robust testing environment for the AT89C51

automotive microcontrollers, but to develop an environment which can be easily

extended and reused for the validation of several other future microcontrollers. The

environment was developed in conjunction with Microsoft Foundation Classes

(AT89C51).

1.1 Features

* Compatible with MCS-51 Products

* 2Kbytes of Reprogrammable Flash Memory

Endurance: 1,000Write/Erase Cycles

* 2.7V to 6V Operating Range

* Fully Static operation: 0Hz to 24MHz

* Two-level program memory lock

* 128x8-bit internal RAM

* 15programmable I/O lines

* Two 16-bit timer/counters

* Six interrupt sources

*Programmable serial UART channel

* Direct LED drive output

* On-chip analog comparator

* Low power idle and power down modes

1.2 Description

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