CN103163525A - Reversing radar based on single chip microcomputer control - Google Patents
Reversing radar based on single chip microcomputer control Download PDFInfo
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- CN103163525A CN103163525A CN 201110424367 CN201110424367A CN103163525A CN 103163525 A CN103163525 A CN 103163525A CN 201110424367 CN201110424367 CN 201110424367 CN 201110424367 A CN201110424367 A CN 201110424367A CN 103163525 A CN103163525 A CN 103163525A
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Abstract
The invention relates to the fields of ultrasonic detection and single chip microcomputer control, and a method which is based on the ultrasonic distance measurement technology and uses a single chip microcomputer to calculate and judge to achieve car distance display in car backing process and short-distance alarm is designed. The method has the advantages of being capable of improving safety degree of car backing, strong in transportability, easy to transplant to other equipment and devices, convenient to use, and suitable for anyone to use.
Description
One, technical field
The present invention relates to ultrasound examination, the technical fields such as Single-chip Controlling have designed a kind ofly based on ultrasonic measuring distance technology, use that single-chip microcomputer calculates and the spacing of judgement when realizing reversing shows, the method for short-distance alarm.
Two, background technology
Ultrasonic measuring distance technology is to utilize the aerial velocity of propagation of ultrasound wave to be known quantity, measures sound wave and run into the time that barrier reflects after emission, calculates launching site to the actual range of barrier according to the mistiming that transmits and receives.Ultrasonic ranging principle and Principles of Radar are similar.
Single-chip microcomputer (Microcontroller Unit) is widely used a kind of microcontroller, the 89C51 single-chip microcomputer that adopts in the design is a kind of use 8 single-chip microcomputers frequently especially, and it has economic and practical for realizing the simple function of controlling, durable electricity-saving, the characteristics of good stability.
Three, summary of the invention
According to above-mentioned situation, the invention provides a kind ofly based on ultrasonic measuring distance technology, use that single-chip microcomputer calculates and the spacing of judgement when realizing reversing shows, the method for short-distance alarm.
Its concrete technical scheme is such:
(1) single-chip microcomputer sends information to sending module, makes sending module send ultrasonic signal; Make again receiver module accept hyperacoustic return signal.
(2) single-chip microcomputer is measured calculating to the return signal that obtains, and according to corresponding result, LED and hummer is controlled.
(3) when recording distance less than 3 meters, the distance of real-time range of a signal barrier, and nearest probe is indicated with corresponding LED lamp; When distance during less than 0.4 meter, pilot lamp flicker buzzer warning.
The advantage of the method is: 1. system controls automatically.2. guarantee reversing safety.3. guarantee according to the precision of measuring.
Description of drawings
Fig. 1 is the circuit of control module.
Fig. 2 is hardware system module composition frame chart.
Fig. 3 is the process flow diagram of software.
Embodiment:
The present invention will be further described below in conjunction with accompanying drawing and instantiation:
(1) single-chip microcomputer enables the ultrasound wave sending module, makes this module send ultrasound wave, enables simultaneously receiver module, makes the continuous scanning of receiving port of single-chip microcomputer whether the signal input be arranged.
(2) after receiver module is received signal, single-chip microcomputer is processed calculating to the data of receiving, obtains the distance of barrier, and finds out apart from the position of the nearest sensor of barrier, this label is passed to the principal function of single-chip microcomputer.
(3) principal function judges according to the data that receive, and according to the distance threshold that sets, controls LED lamp or hummer effect.
Claims (2)
1. one kind based on monolithic processor controlled radar for backing car, it is characterized in that:
(1) use ultrasonic measuring distance technology, the distance of surveying apart from barrier is set after car.
(2) when recording distance less than 3 meters, the distance of real-time range of a signal barrier, and nearest probe is indicated with corresponding LED lamp; When distance during less than 0.4 meter, pilot lamp flicker, buzzer warning.
(3) Single-chip Controlling sending module and receiver module send or acknowledge(ment) signal, adjust the distance and measure calculating, control LED lamp and hummer.
2. streamline flow-dividing control method according to claim 1 is characterized in that: in described step (2) ultrasonic sensor have three, respectively in three of the left, middle and right of car direction.Take MA40B8R/S as ultrasonic sensor, divide as signal generator with 555 timers in sending module in described step (3); Accepting needs in module signal is taked the amplification measure, and its signal gating partly adopts 74LS353; Singlechip controller adopts AT89C51.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110424367 CN103163525A (en) | 2011-12-16 | 2011-12-16 | Reversing radar based on single chip microcomputer control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110424367 CN103163525A (en) | 2011-12-16 | 2011-12-16 | Reversing radar based on single chip microcomputer control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103163525A true CN103163525A (en) | 2013-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110424367 Pending CN103163525A (en) | 2011-12-16 | 2011-12-16 | Reversing radar based on single chip microcomputer control |
Country Status (1)
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| CN (1) | CN103163525A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545051A (en) * | 2015-12-11 | 2016-05-04 | 成都翰兴科技有限公司 | High-sensitivity flashing light type underground parking reversing auxiliary system |
| CN105578676A (en) * | 2014-11-05 | 2016-05-11 | 意法半导体(R&D)有限公司 | Lighting system including time of flight ranging system |
| CN107545783A (en) * | 2017-07-14 | 2018-01-05 | 太仓诚泽网络科技有限公司 | A kind of highway barrier system for prompting |
-
2011
- 2011-12-16 CN CN 201110424367 patent/CN103163525A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105578676A (en) * | 2014-11-05 | 2016-05-11 | 意法半导体(R&D)有限公司 | Lighting system including time of flight ranging system |
| CN105578676B (en) * | 2014-11-05 | 2019-03-29 | 意法半导体(R&D)有限公司 | Lighting system including time-of-flight ranging systems |
| CN105545051A (en) * | 2015-12-11 | 2016-05-04 | 成都翰兴科技有限公司 | High-sensitivity flashing light type underground parking reversing auxiliary system |
| CN107545783A (en) * | 2017-07-14 | 2018-01-05 | 太仓诚泽网络科技有限公司 | A kind of highway barrier system for prompting |
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Legal Events
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| PB01 | Publication | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130619 |