CN101302738B - Rut testing instrument and testing method thereof - Google Patents
Rut testing instrument and testing method thereof Download PDFInfo
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- CN101302738B CN101302738B CN200810064863XA CN200810064863A CN101302738B CN 101302738 B CN101302738 B CN 101302738B CN 200810064863X A CN200810064863X A CN 200810064863XA CN 200810064863 A CN200810064863 A CN 200810064863A CN 101302738 B CN101302738 B CN 101302738B
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Abstract
The invention provides a rut detecting device and a detecting method thereof, and the rut detecting device comprises a distance sensor part, a signal conditioning circuit part, an analog signal digitizing circuit part, a main control circuit part, a speed matching circuit part, a communication circuit part and a computer part; the distance sensor part consists of at least one sensor used for measuring distance; the signal conditioning circuit part consists of a signal switching circuit and a pre-amplifier gain circuit; the analog signal digitizing circuit part consists of an analog-to-digital converter; the main control circuit part consists of a microprocessor circuit part; the communication circuit part consists of communication devices; the speed matching circuit part consists of a speed detecting circuit and a distance triggering circuit; the computer part consists of a computer containing a processor and a storage and having the functions of displaying, calculating and storing. The rut detecting device improves the speed and the precision of rut detecting.
Description
(1) technical field
The present invention relates to the rut detection technique, be specifically related to a kind of detecting instrument and detection method thereof of automatic detection highway rut.
Along with the fast development of China's communications and transportation, accurately and timely detecting highway distress becomes outstanding problem day by day.Rut has a strong impact on travel safety and transport economic specific property as one of main disease form of China's asphalt pavement of highway.Rut detects and estimates is one of important evidence of determining the maintenance scheme, also is that road pavement is carried out the requisite technology contents of long term monitoring.The present rut of China detects most manual modes that adopt, and as testing tool, adopts the artificial mode of directly measuring with ruler, and means fall behind, and is extremely incompatible with the operating environment of modern road traffic.Simultaneously, because detection means falls behind, detection efficiency is low, can not monitor the disease evolution effectively, makes and can't formulate cost-effective maintenance program, to reduce maintenance cost.
A kind of detection that the object of the present invention is to provide fast, equipment cost is low and measuring accuracy height, service-strong rut testing instrument.The present invention also aims to provide the rut detection method that a kind of detection speed is fast, order of accuarcy is high.
(3) summary of the invention
Product structure of the present invention is: it comprises range sensor part, signal conditioning circuit part, analog signal digital circuit part, main control circuit part, speeds match circuit part, communicating circuit part and computing machine part, and described range sensor part is made up of the sensor of at least one measuring distance; Described signal conditioning circuit is made up of signal switching circuit and preamplifier gain amplifying circuit; Described analog signal digital circuit part is made up of analogue-to-digital converters; Described main control circuit part is made up of microprocessor circuit part; Described communicating circuit part is made up of communication device; Described speeds match circuit part is formed by velocity checking circuits with apart from trigger circuit; Described computing machine partly is made up of the computing machine with demonstration, computing and store function that contains processor and storer;
The sensor of described measuring distance is connected with the signal switching circuit of signal conditioning circuit; Signal switching circuit is connected with main control circuit part with the preamplifier gain amplifying circuit; The preamplifier gain amplifying circuit is connected with the analogue-to-digital converters of described analog signal digital circuit part; Analogue-to-digital converters are connected with governor circuit; The velocity checking circuits of described speeds match circuit part be connected apart from trigger circuit; Be connected with governor circuit apart from trigger circuit; Described governor circuit is respectively with signal switching circuit, analogue-to-digital converters, be connected apart from the communication device of trigger circuit, communicating circuit part.
Detection technique of the present invention may further comprise the steps:
A. at first with the sensor employing linear pattern form of range sensor measuring distance partly, divide to be listed in the top, road surface, and vertically move along highway;
B. the sensor of the measuring distance of range sensor part obtains separately the distance signal with the road surface respectively;
C. distance signal carries out signal condition by the preamplifier gain amplifying circuit behind the signal switching circuit gating of signal conditioning circuit;
D. the velocity checking circuits of speeds match circuit part obtains speed data, produce trigger pip apart from trigger circuit according to speed data and give governor circuit, governor circuit switches to the sensor of measuring distance respectively according to the signal switching circuit of trigger pip control signal modulate circuit, the signal of controlling then after the analog signal digital circuit part will be nursed one's health is converted into range data, and is transferred to main control circuit part;
E. governor circuit partly is transferred to the computing machine part with the range data of the sensor acquisition of all measuring distances by communicating circuit, and computing machine partly carries out storage, the demonstration of data.
The present invention has improved the detection speed and the order of accuarcy of rut.Present domestic rut measuring method is still continued to use the method for 3 meters ruler manual measurements, efficiency of measurement is low, and it is bigger that measurement result is influenced by surveying instrument and survey crew subjectivity, simultaneously, because the highway in China mileage is long, use manual measurement to be difficult to realize highway generaI investigation and data base administration.External rut is measured and is adopted 3 point measurements or 5 point measurements.For example, the U.S. had once carried out an investigation to the present rut acquisition method that uses of 50 interstate highway departments and Puerto Rico, totally 51 departments, 39 departments respond, wherein 20 states are with 3 sensor rut instrument, 19 methods that adopt other have 2 states to adopt the manual measurement method in the middle of these 19 states, the rut data are not gathered in 2 states.
(4) description of drawings
Fig. 1 is a circuit block diagram of the present invention;
Fig. 2 is the workflow diagram of instrument of the present invention.
(5) embodiment
The present invention will be further described below in conjunction with specific embodiments and the drawings:
Embodiment 1:
In conjunction with Fig. 1, present embodiment highway rut testing instrument comprises: range sensor part 1, signal conditioning circuit part 2, analog signal digital circuit part 3, main control circuit part 4, speeds match circuit part 5, communicating circuit part 6 and computing machine part 7.This instrument is installed on the automobile.
Signal conditioning circuit 2 is made up of signal switching circuit 21 and preamplifier gain amplifying circuit 22; Wherein signal switching circuit 21 is made up of cd74hc4051 analog switch chip, and preamplifier gain amplifying circuit 22 is made up of with the operational amplifier chip the ad620 instrument.
Analog signal digital 3 circuit parts are made up of analogue-to-digital converters ad9288 chip;
Main control circuit part 4 is made up of microprocessor MCS-51 single-chip microcomputer;
Speeds match circuit part 5 is formed by velocity checking circuits 51 with apart from trigger circuit 52; Velocity checking circuits 51 detects the speed of running car, produces trigger pip apart from trigger circuit 52 according to speed data, is made of fpga chip EP1C6Q240 chip.
Communicating circuit part 6 is made up of RS-232 communication device MAX232 chip;
17 infrared distance sensors of range sensor part are connected with the signal switching circuit of signal conditioning circuit; Signal switching circuit is connected with main control circuit part with the preamplifier gain amplifying circuit; The preamplifier gain amplifying circuit is connected with the analogue-to-digital converters of described analog signal digital circuit part; Analogue-to-digital converters are connected with governor circuit.The velocity checking circuits of speeds match circuit part be connected apart from trigger circuit; Be connected with governor circuit apart from trigger circuit.Governor circuit remove respectively with signal switching circuit, analogue-to-digital converters, apart from trigger circuit is connected, the communication device connection of communicating circuit part.
The method of detection pavement track of the present invention is:
A. at first with the sensor employing linear pattern form of range sensor a plurality of measuring distances partly, divide to be listed in the top, road surface, and vertically move along highway.Present embodiment has 17 infrared distance sensors, and the 20cm line spread is parallel with the road surface at interval, and vertical with the automobile direct of travel.
B.17 infrared distance sensor obtains separately the distance signal with the road surface respectively;
C. each distance signal carries out signal condition by the preamplifier gain amplifying circuit behind the signal switching circuit gating of signal conditioning circuit;
D. the velocity checking circuits of speeds match circuit part obtains the travel speed data of automobile, produces trigger pip apart from trigger circuit according to speed data and gives governor circuit.Present embodiment adopts the automobile 1m that whenever travels to produce the method for a trigger pip.Governor circuit switches to the sensor of 17 measuring distances respectively according to trigger pip control signal commutation circuit, and the signal of controlling then after the analog signal digital circuit part will be nursed one's health is converted into range data, and is transferred to main control circuit part;
E. governor circuit is transferred to computing machine with the range data that all 17 sensors obtain by the RS-232 communication interface, and computing machine carries out storage, the demonstration of data.
In conjunction with Fig. 2, the workflow of present embodiment is as follows:
1. carrying out system initialization, mainly is to check whether 17 sensors are working properly, and whether communication interface connects.
2. judged whether trigger pip, if not then continue to judge; If trigger pip is arranged, then control the sensor that commutation circuit switches to measuring distance respectively,
3. the signal after control analog signal digital circuit part will be nursed one's health is converted into range data, and is transferred to main control circuit part;
4. judge whether 17 infrared distance sensors all obtain,, then continue to measure if do not have; If all obtain, then range data be transferred to computing machine;
5. computing machine stores and shows according to the data that obtain.
Embodiment 2:
In conjunction with Fig. 1, present embodiment highway rut testing instrument comprises: range sensor part 1, signal conditioning circuit part 2, analog signal digital circuit part 3, main control circuit part 4, speeds match circuit part 5, communicating circuit part 6 and computing machine part 7.This instrument is installed on the automobile.
Signal conditioning circuit 2 is made up of signal switching circuit 21 and preamplifier gain amplifying circuit 22; Wherein signal switching circuit 21 is made up of cd74hc4051 analog switch chip, and preamplifier gain amplifying circuit 22 is made up of with the operational amplifier chip the ad620 instrument.
Analog signal digital 3 circuit parts are made up of analogue-to-digital converters ad9288 chip;
Main control circuit part 4 is made up of microprocessor MCS-51 single-chip microcomputer;
Speeds match circuit part 5 is formed by velocity checking circuits 51 with apart from trigger circuit 52; Velocity checking circuits 51 detects the speed of running car, produces trigger pip apart from trigger circuit 52 according to speed data, is made of fpga chip EP1C6Q240 chip.
Communicating circuit part 6 is made up of RS-232 communication device MAX232 chip;
33 laser range sensors of range sensor part are connected with the signal switching circuit of signal conditioning circuit; Signal switching circuit is connected with main control circuit part with the preamplifier gain amplifying circuit; The preamplifier gain amplifying circuit is connected with the analogue-to-digital converters of described analog signal digital circuit part; Analogue-to-digital converters are connected with governor circuit.The velocity checking circuits of speeds match circuit part be connected apart from trigger circuit; Be connected with governor circuit apart from trigger circuit.Governor circuit remove respectively with signal switching circuit, analogue-to-digital converters, apart from trigger circuit is connected, the communication device connection of communicating circuit part.
The method of detection pavement track of the present invention is:
A. at first with the sensor employing linear pattern form of range sensor a plurality of measuring distances partly, divide to be listed in the top, road surface, and vertically move along highway.Present embodiment has 33 laser range sensors, and the 10cm line spread is parallel with the road surface at interval, and vertical with the automobile direct of travel.
B.33 the range finding distance measuring sensor obtains separately the distance signal with the road surface respectively;
C. each distance signal carries out signal condition by the preamplifier gain amplifying circuit behind the signal switching circuit gating of signal conditioning circuit;
D. the velocity checking circuits of speeds match circuit part obtains the travel speed data of automobile, produces trigger pip apart from trigger circuit according to speed data and gives governor circuit.Present embodiment adopts the automobile 0.1m that whenever travels to produce the method for a trigger pip.Governor circuit switches to the sensor of 33 measuring distances respectively according to trigger pip control signal commutation circuit, and the signal of controlling then after the analog signal digital circuit part will be nursed one's health is converted into range data, and is transferred to main control circuit part;
E. governor circuit is transferred to computing machine with the range data that all 33 laser sensors obtain by the RS-232 communication interface, and computing machine carries out storage, the demonstration of data.
In conjunction with Fig. 2, the workflow of present embodiment is as follows:
1. carrying out system initialization, mainly is to check whether 33 laser sensors are working properly, and whether communication interface connects.
2. judged whether trigger pip, if not then continue to judge; If trigger pip is arranged, then control the sensor that commutation circuit switches to measuring distance respectively,
3. the signal after control analog signal digital circuit part will be nursed one's health is converted into range data, and is transferred to main control circuit part;
4. judge whether 33 laser range sensors all obtain,, then continue to measure if do not have; If all obtain, then range data be transferred to computing machine;
5. computing machine stores and shows according to the data that obtain.
Claims (2)
1. rut testing instrument, it comprises range sensor part, signal conditioning circuit part, analog signal digital circuit part, main control circuit part, speeds match circuit part, communicating circuit part and computing machine part, it is characterized in that described range sensor part is made up of the sensor of at least one measuring distance; Described signal conditioning circuit is made up of signal switching circuit and preamplifier gain amplifying circuit; Described analog signal digital circuit part is made up of analogue-to-digital converters; Described main control circuit part is made up of microprocessor circuit part; Described communicating circuit part is made up of communication device; Described speeds match circuit part is formed by velocity checking circuits with apart from trigger circuit; Described computing machine partly is made up of the computing machine with demonstration, computing and store function that contains processor and storer, and governor circuit partly is transferred to the computing machine part with the range data of the sensor acquisition of all measuring distances by communicating circuit; The sensor of described measuring distance is connected with the signal switching circuit of signal conditioning circuit; Signal switching circuit is connected with main control circuit part with the preamplifier gain amplifying circuit; The preamplifier gain amplifying circuit is connected with the analogue-to-digital converters of described analog signal digital circuit part; Analogue-to-digital converters are connected with governor circuit; The velocity checking circuits of described speeds match circuit part be connected apart from trigger circuit; Be connected with governor circuit apart from trigger circuit; Described governor circuit is respectively with signal switching circuit, analogue-to-digital converters, be connected apart from the communication device of trigger circuit, communicating circuit part.
2. rut detection method that uses the described rut testing instrument of claim 1 is characterized in that it may further comprise the steps:
A. at first with the sensor employing linear pattern form of range sensor measuring distance partly, divide to be listed in the top, road surface, and vertically move along highway;
B. the sensor of the measuring distance of range sensor part obtains separately the distance signal with the road surface respectively;
C. distance signal carries out signal condition by the preamplifier gain amplifying circuit behind the signal switching circuit gating of signal conditioning circuit;
D. the velocity checking circuits of speeds match circuit part obtains speed data, produce trigger pip apart from trigger circuit according to speed data and give governor circuit, governor circuit switches to the sensor of measuring distance respectively according to the signal switching circuit of trigger pip control signal modulate circuit, the signal of controlling then after the analog signal digital circuit part will be nursed one's health is converted into range data, and is transferred to main control circuit part;
E. governor circuit partly is transferred to the computing machine part with the range data of the sensor acquisition of all measuring distances by communicating circuit, and computing machine partly carries out storage, the demonstration of data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810064863XA CN101302738B (en) | 2008-07-07 | 2008-07-07 | Rut testing instrument and testing method thereof |
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| CN200810064863XA CN101302738B (en) | 2008-07-07 | 2008-07-07 | Rut testing instrument and testing method thereof |
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| CN101302738A CN101302738A (en) | 2008-11-12 |
| CN101302738B true CN101302738B (en) | 2011-11-02 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120283864A1 (en) * | 2011-05-04 | 2012-11-08 | Norandal Usa, Inc. | Automated cast coil evaluation system |
| CN102706880B (en) * | 2012-06-26 | 2014-04-02 | 哈尔滨工业大学 | Road information extraction device based on two-dimensional image and depth information and road crack information detection method based on same |
| CN103669183B (en) * | 2013-12-02 | 2016-05-25 | 黑龙江科技大学 | The time series models of surface evenness |
| CN103835212B (en) * | 2014-02-21 | 2015-11-25 | 哈尔滨工业大学 | A kind of highway pavement three-dimensional detection system |
| CN103927884B (en) * | 2014-04-21 | 2016-01-20 | 哈尔滨工业大学 | A kind of vehicle detection apparatus based on acceleration transducer and light activated element |
| CN103927870B (en) * | 2014-04-21 | 2016-08-24 | 哈尔滨工业大学 | A kind of vehicle detection apparatus based on multiple vibration detection sensors |
| CN115522437A (en) * | 2022-09-30 | 2022-12-27 | 交通运输部公路科学研究所 | Evaluation method and device for deflection measurement performance of pavement laser high-speed deflectometer |
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