CN103913746A - Ship draught ultralimit detection system and method - Google Patents
Ship draught ultralimit detection system and method Download PDFInfo
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- CN103913746A CN103913746A CN201410171888.5A CN201410171888A CN103913746A CN 103913746 A CN103913746 A CN 103913746A CN 201410171888 A CN201410171888 A CN 201410171888A CN 103913746 A CN103913746 A CN 103913746A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
- G01S11/14—Systems for determining distance or velocity not using reflection or reradiation using ultrasonic, sonic, or infrasonic waves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
- B63B39/12—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude for indicating draught or load
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- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
The invention discloses a ship draught ultralimit detection system and method. The system comprises a synchronous signal generating module, an ultrasonic wave transmitting module, an ultrasonic wave receiving module, a distance measuring module, a data processing module and a display alarm module. The ultrasonic wave transmitting module is fixedly installed on one side of a channel, and the ultrasonic wave receiving module is installed on the other side, opposite to the ultrasonic wave transmitting module, of the channel. The distance measuring point of the distance measuring module and the ultrasonic wave sending point of the ultrasonic wave transmitting module are located in the same vertical line. According to the ship draught ultralimit detection system and method, ultrasonic waves are emitted from one side of a ship, the other side of the ship receives the ultrasonic waves, and therefore the ship draught ultralimit detection system is of a side sweeping type. Due to the fact that the ship draught ultralimit detection system is arranged on the two sides of the channel, installation is easy, navigation of the ship cannot be affected, and the user range is wider. The shielding conditions are judged according to the delay time and the strength of the signals received by an ultrasonic wave receiver array, the influences on a measuring result by the sound wave multi-path effect can be eliminated, and the measuring result can be more accurate.
Description
Technical field
The present invention relates to underwater ultrasound Detection Techniques, drauht transfinite detection technique, particularly a kind of drauht automobile overweight detecting system and detection method thereof.
Background technology
Along with Yangtze River shipping amount constantly increases, in navigation channel, ships quantity and density all significantly improve, drauht transfinites day by day serious to the threat of shipping safety, and especially in the ship lift in the Yangtze River Gorges, boats and ships that drinking water is transfinited are as easy as rolling off a log to rising cabin and navigation channel causes damage.At present the drauht detection means that transfinites mainly contains following several:
One, detect manually;
Two, the shipping depth gauge Recognition of Reading technology based on image processing techniques;
Three, laser water level mensuration;
Four, ultrasonic array method.
In said method, method one is because people's subjectivity accounting example is too large, and Measuring Time is also longer, has affected the navigation efficiency in navigation channel; Method two too relies on the water gauge accuracy of boats and ships self, and usability is limited; Method three is because laser cannot be grown Distance Transmission in water, and usable range is limited to some extent; Method four is installed, overhauls loaded down with trivial details, and impact navigation efficiency.Therefore at present also do not have a kind of method can fast measure accurately the method that drauht transfinites.
Summary of the invention
The problems referred to above that exist for solving prior art, the present invention will design that a kind of usable range is wide, measurement result accurately, be easy to installation, maintenance drauht automobile overweight detecting system and detection method thereof easily.
To achieve these goals, technical scheme of the present invention is as follows: a kind of drauht automobile overweight detecting system, comprises synchronizing signal generation module, ultrasound wave transmitter module, ultrasound wave receiver module, range finder module, data processing module and display alarm module;
Described synchronizing signal generation module adopts to be built hardware circuit or utilizes the mode of GPS synchronous clock simultaneously to ultrasound wave transmitter module, ultrasound wave receiver module and range finder module transmitting synchronizing signal, and these three modules are started working simultaneously;
Described ultrasound wave transmitter module comprises synchronizing signal receiving trap, ultrasonic transmitter, angle measurement equipment and support; Described synchronizing signal receiving trap is used for receiving synchronizing signal; Ultrasonic transmitter sends the ultrasonic pulse that the low-angle duration is Δ t; Angle measurement equipment is measured ultrasonic transmitter the ultrasound wave center line sending and the angular deflection amount β that absorbs water warning line, for the correction of last measurement result; Support is used for ultrasound wave transmitter module to be fixedly mounted on the side in navigation channel; The ultrasound wave center line that ultrasonic transmitter sends overlaps with the drauht warning line of regulation or approaches;
Described ultrasound wave receiver module comprises linear array formula ultrasound wave receiver module or non-linear array formula ultrasound wave receiver module; Described linear array formula ultrasound wave receiver module comprises synchronizing signal receiving trap, linear ultrasound receiver array, data transmission device and support; Synchronizing signal receiving trap receives synchronizing signal; Ultrasonic receiver array received is not stopped and propagates the ultrasound wave of coming by barrier; The measurement result of ultrasonic receiver array is transferred to data processing module by data transmission device; This module is fixedly mounted on the navigation channel opposite side relative with ultrasound wave transmitter module by support; Linear ultrasound receiver array direction vertically and its central point be positioned at or approach drauht warning line; Described non-linear array formula ultrasound wave receiver module comprises synchronizing signal receiving trap, buoyancy tank, ultrasonic receiver array, DGPS locating device and data transmission device; Synchronizing signal receiving trap receives synchronizing signal; Buoyancy tank is used for fixing installs ultrasonic receiver array, can in water, keep static state; The array surface of ultrasonic receiver array is greater than the effective rounded face of ultrasound wave that transmitting comes; The position coordinates of buoyancy tank is monitored and located to DGPS locating device, and whether monitoring buoyancy tank departs from effective receiving position; The measurement result of ultrasonic receiver array is transferred to data processing module by data transmission device; Described DGPS locating device is the abbreviation of differential Global Positioning System locating device;
Described range finder module comprises synchronizing signal receiving trap, distance measuring equipment and data transmission device; The ultrasound wave of the point distance measurement of range finder module and ultrasound wave transmitter module sends and is a little positioned on same vertical curve.
A detection method for drauht automobile overweight detecting system, comprises the following steps:
A, synchronizing signal generation module send synchronizing signal
Hardware circuit is built in the employing of synchronizing signal generation module or GPS synchronous clock sends synchronizing signal, and assurance ultrasound wave transmitter module, ultrasound wave receiver module and range finder module are started working simultaneously, record the desired data of boats and ships synchronization;
B, ultrasound wave transmitter module send ultrasound wave
Ultrasound wave transmitter module is arranged on navigation channel one side, and it sends low-angle ultrasonic pulse centered by drauht warning line; This ultrasonic pulse is fixed frequency, be convenient to water in the differentiation of other sound wave; When ultrasound wave is not blocked in transmission way, complete being received by ultrasound wave receiver module of meeting; In the time being blocked by boats and ships, the ultrasonic signal that ultrasound wave receiver module receives can change midway;
C, ultrasound wave receiver module receive ultrasound wave
Ultrasound wave receiver module, according to the difference of measurement environment, is worked respectively in the following ways: when navigation channel, short, the depth of water of two lateral extents and water quality are clear, the corresponding C1 that goes to step when not obvious in many ways of sound wave; Otherwise, go to step C2;
C1, when navigation channel short, the depth of water of two lateral extents and water quality clear, when the multi-path effect of sound wave is not obvious, ultrasound wave receiver module adopts linear array formula ultrasound wave receiver module, before whether measurement drauht transfinites, accurately measure in advance the length M that in the time there is no barrier linear ultrasound receiver array can receive hyperacoustic effective range, go to step D;
C2, when at two sides, navigation channel distance, the shallow and water turbidity of water, in the obvious environment of multi-path effect of sound wave, ultrasound wave receiver module is subject to external interference serious, adopts non-linear array formula ultrasound wave receiver module; Ultrasound wave transmitter module and ultrasound wave receiver module are started working simultaneously, the ultrasound wave elapsed time t coming along short lines propagated starts by ultrasonic receiver array received, and reflect, reflect the ultrasound wave coming along path at random due to the reason that path length, direction are spuious, energy disperses because of multi-path effect, the time that arrives ultrasonic receiver array is greater than t, and the weak strength of waveform, so the effective ultrasonic pulse receiving should be in time t～t+ Δ t interval, and its signal intensity is much larger than interference signal intensity; Therefore from ultrasonic receiver array received to hyperacoustic time delay and waveform intensity determine accurately and receive the effective range of signal, thereby the impact of the multi-path effect of eliminating sound wave on measurement result; Measuring before whether drauht transfinite, accurately measuring in advance in the time there is no barrier ultrasonic receiver array and can receive the diameter length M of hyperacoustic effective round scope;
D, range finder module range finding
Range finder module is started working after receiving synchronizing signal, records the distance L of point distance measurement to hull
1, then measured result is transferred to data processing module by data transmission device;
E, data processing module carry out data processing
If data processing module from the VTS information of boats and ships or AIS information hull half width be L
2, receiving ultrasound wave transmitter module from range finder module is L to the distance of hull
1, ultrasound wave transmitter module is to the horizontal range L at bottom of ship center
3=L
1+ (L
2/ 2); After ultrasound wave transmitter module is started working, the ultrasound wave elapsed time T coming along short lines propagated starts by ultrasonic receiver array received, and the reason that the ultrasound wave that reflects, reflects along path at random because of multi-path effect disperses due to path length, energy, the time that arrives ultrasonic receiver array is greater than T, and the weak strength of waveform, therefore from ultrasonic receiver array received to hyperacoustic time delay and waveform intensity can determine accurately and receive the effective range of signal, thereby the impact of the multi-path effect of eliminating sound wave on measurement result; If ultrasonic receiver array received effective signal area length is D
1, the ultrasound wave center line of transmitting is β with drinking water warning line angular deflection amount; Before driving into surveyed area without boats and ships, measure in advance the fully effective length M of ultrasonic receiver array received ultrasonic wave range;
If ultrasound wave transmitter module is a; In the time having boats and ships to stop ultrasonic propagation, effective upper change point of ultrasonic receiver array received range of signal is b; The intersection point of launching hyperacoustic center line and ultrasonic receiver array is c; The intersection point of drinking water warning line and ultrasonic receiver is d; Hull bottom point is e; The center line of boat is f with drinking water warning line intersection point; Hull bottom is H to the distance of drinking water warning line; Horizontal range L between ultrasound wave transmitter module and ultrasonic receiver array
4for known; Length D between 2 of b, c
2=D
1-M/2; Length L between 2 of a, f
3=L
1+ L
2; Distance B between 2 of c, d
3=L
4× tan β; First according to D
1judge with the relation of M, if D
1=M, turns E1; If D
1≤ (M/2-D
3), turn E2; If (M/2-D
3)≤D
1< M, turns E3;
When E1, boats and ships to be measured cross measurement zone, hyperacoustic propagation is not produced and hindered, illustrate that shipping draft is more shallow than warning line, can open the navigation or air flight safely; Turn F;
When E2, boats and ships to be measured cross measurement zone, hyperacoustic propagation is produced and hindered, and hull bottom draft exceedes warning line; Turn F;
When E3, boats and ships to be measured cross measurement zone, hyperacoustic propagation is produced and hindered, but hull bottom draft does not exceed warning line, and warning degree is further judged; In Δ abc and Δ aef, the corresponding two groups of tangent ratios of ∠ a equate, so have:
Release the distance of shipping draft and warning line:
According to the size of H, the draft alert level of boats and ships is carried out to classification, obtain final measurement result;
F, display alarm module are carried out display alarm
Display alarm module shows or reports to the police according to the measurement result of data processing module.
Compared with prior art, advantage of the present invention is as follows:
1, the ultrasound wave transmitter module in the present invention and ultrasound wave receiver module are arranged on respectively the both sides in navigation channel, can send ultrasound wave in boats and ships one side, and opposite side receives ultrasound wave, are therefore a kind of drauht automobile overweight detecting systems of side sweeping type.Because in both sides, navigation channel, so be easy to install, can not affect ship navigation, usable range is more extensive.
2, the present invention judges by time delay and the intensity of the signal to ultrasonic receiver array received the situation of blocking, and can eliminate the impact of sound wave multi-path effect on measurement result, makes measurement result more accurate.
3, ultrasound wave receiving array of the present invention can adopt buoyancy tank to install according to the needs of environment, makes installation site have dirigibility, and maintenance of equipment is convenient.
Whether 4, the present invention can measure drauht transfinites, and in the time that shipping draft is near warning line, can measure the distance of hull bottom and warning line, therefore in the time of multiple ultrasound wave transmitter module combinations and the corresponding installation of multiple ultrasound wave receiver module combination, can combine and can form drauht detection system for the multiple side sweeping type ultrasonic transmission devices of the concrete draft of surveying vessel oceangoing ship, can measure the concrete draft of boats and ships.
Accompanying drawing explanation
The present invention has accompanying drawing 10 width, wherein:
Fig. 1 is side sweeping type drauht automobile overweight detecting system workflow diagram.
Fig. 2 is ultrasound wave transmitter module setting angle schematic diagram.
Fig. 3 is ultrasound wave receiver module setting angle schematic diagram.
Fig. 4 is nonlinear ultrasonic receiver array schematic diagram.
Fig. 5 is that the impact of sound wave multi-path effect receives waveform schematic diagram.
Fig. 6 is that shipping draft is away from warning line schematic diagram.
Fig. 7 is that shipping draft approaches warning line schematic diagram.
Fig. 8 is that shipping draft exceedes warning line schematic diagram.
Fig. 9 is ultrasound wave transmitter module combination schematic diagram.
Figure 10 is ultrasound wave receiver module combination schematic diagram.
In figure: 1, synchronizing signal generation module, 2, ultrasound wave transmitter module, 3, ultrasound wave receiver module, 4, range finder module, 5, data processing module, 6, display alarm module, 7, drauht warning line, 8, linear ultrasound receiver array, 9, buoyancy tank, 10, ultrasonic receiver array, 11, the effective rounded face of ultrasound wave, 12, boats and ships to be measured, 13, the combination of ultrasound wave transmitter module, 14, ultrasound wave receiver module combination, 15, ultrasound wave launching centre line.
Embodiment
As shown in Figure 1, the present invention is side sweeping type drauht automobile overweight detecting system, is mainly made up of synchronizing signal generation module 1, ultrasound wave transmitter module 2, ultrasound wave receiver module 3, range finder module 4, data processing module 5 and display alarm module 6.
Described synchronizing signal generation module 1 adopts to be built hardware circuit or utilizes the mode of GPS synchronous clock to launch synchronizing signal to ultrasound wave transmitter module 2, ultrasound wave receiver module 3 and range finder module 4 simultaneously, and these three modules are started working simultaneously;
Described ultrasound wave transmitter module 2 comprises synchronizing signal receiving trap, ultrasonic transmitter, angle measurement equipment and support; Described synchronizing signal receiving trap is used for receiving synchronizing signal; Ultrasonic transmitter sends the ultrasonic pulse that the low-angle duration is Δ t; Angle measurement equipment is measured ultrasonic transmitter the ultrasound wave launching centre line 15 sending and the angular deflection amount β that absorbs water warning line, for the correction of last measurement result; Support is used for ultrasound wave transmitter module 2 to be fixedly mounted on the side in navigation channel; As shown in Figure 2, the ultrasound wave launching centre line 15 that ultrasonic transmitter sends overlaps with the drauht warning line 7 of regulation or approaches;
Described ultrasound wave receiver module 3 comprises linear array formula ultrasound wave receiver module 3 or non-linear array formula ultrasound wave receiver module 3; Described linear array formula ultrasound wave receiver module 3 comprises synchronizing signal receiving trap, linear ultrasound receiver array 8, data transmission device and support; Synchronizing signal receiving trap receives synchronizing signal; Ultrasonic receiver array 10 does not receive and is not stopped and propagate the ultrasound wave of coming by barrier; The measurement result of ultrasonic receiver array 10 is transferred to data processing module 5 by data transmission device; This module is fixedly mounted on the navigation channel opposite side relative with ultrasound wave transmitter module 2 by support; As shown in Figure 3, linear ultrasound receiver array 8 directions vertically and its central point be positioned at or approach drauht warning line 7.Described non-linear array formula ultrasound wave receiver module 3 comprises synchronizing signal receiving trap, buoyancy tank 9, ultrasonic receiver array 10, DGPS locating device and data transmission device; Synchronizing signal receiving trap receives synchronizing signal; Buoyancy tank 9 is used for fixing installs ultrasonic receiver array 10, can in water, keep static state; As shown in Figure 4, the array surface of ultrasonic receiver array 10 is greater than the effective rounded face 11 of ultrasound wave that transmitting comes; The position coordinates of buoyancy tank 9 is monitored and located to DGPS locating device, and whether monitoring buoyancy tank 9 departs from effective receiving position; The measurement result of ultrasonic receiver array 10 is transferred to data processing module 5 by data transmission device;
Described range finder module 4 comprises synchronizing signal receiving trap, distance measuring equipment and data transmission device; As shown in Figure 2, the ultrasound wave of the point distance measurement of range finder module 4 and ultrasound wave transmitter module 2 sends and is a little positioned on same vertical curve.
A detection method for drauht automobile overweight detecting system, comprises the following steps:
A, synchronizing signal generation module 1 send synchronizing signal
Hardware circuit is built in 1 employing of synchronizing signal generation module or GPS synchronous clock sends synchronizing signal, and assurance ultrasound wave transmitter module 2, ultrasound wave receiver module 3 and range finder module 4 are started working simultaneously, record the desired data of boats and ships synchronization;
B, ultrasound wave transmitter module 2 send ultrasound wave
Ultrasound wave transmitter module 2 is arranged on navigation channel one side, and it sends low-angle ultrasonic pulse centered by drauht warning line 7; This ultrasonic pulse is fixed frequency, be convenient to water in the differentiation of other sound wave; When ultrasound wave is not blocked in transmission way, complete being received by ultrasound wave receiver module 3 of meeting; In the time being blocked by boats and ships, the ultrasonic signal that ultrasound wave receiver module 3 receives can change midway;
C, ultrasound wave receiver module 3 receive ultrasound wave
Ultrasound wave receiver module 3, according to the difference of measurement environment, is worked respectively in the following ways: when navigation channel, short, the depth of water of two lateral extents and water quality are clear, the corresponding C1 that goes to step when not obvious in many ways of sound wave; Otherwise, go to step C2;
C1, when navigation channel short, the depth of water of two lateral extents and water quality clear, when the multi-path effect of sound wave is not obvious, ultrasound wave receiver module 3 adopts linear array formula ultrasound wave receiver module 3, before whether measurement drauht transfinites, accurately measure in advance the length M that in the time there is no barrier linear ultrasound receiver array 8 can receive hyperacoustic effective range, go to step D;
C2, when at two sides, navigation channel distance, the shallow and water turbidity of water, in the obvious environment of multi-path effect of sound wave, ultrasound wave receiver module 3 is subject to external interference serious, adopts non-linear array formula ultrasound wave receiver module 3; Ultrasound wave transmitter module 2 and ultrasound wave receiver module 3 are started working simultaneously, as shown in Figure 5, the ultrasound wave elapsed time t coming along short lines propagated starts to be received by ultrasonic receiver array 10, and reflect, reflect the ultrasound wave coming along path at random due to the reason that path length, direction are spuious, energy disperses because of multi-path effect, the time that arrives ultrasonic receiver array 10 is greater than t, and the weak strength of waveform, so the effective ultrasonic pulse receiving should be in time t～t+ Δ t interval, and its signal intensity is much larger than interference signal intensity; Therefore the hyperacoustic time delay receiving from ultrasonic receiver array 10 and waveform intensity determine the effective range that receives signal accurately, thus the impact of the multi-path effect of elimination sound wave on measurement result; Measuring before whether drauht transfinite, accurately measuring in advance in the time there is no barrier ultrasonic receiver array 10 and can receive the diameter length M of hyperacoustic effective round scope;
D, range finder module 4 are found range
Range finder module 4 is started working after receiving synchronizing signal, records the distance L of point distance measurement to hull
1, then measured result is transferred to data processing module 5 by data transmission device;
E, data processing module 5 carry out data processing
If data processing module 5 from the VTS information of boats and ships or AIS information hull half width be L
2, receiving ultrasound wave transmitter module 2 from range finder module 4 is L to the distance of hull
1, ultrasound wave transmitter module 2 is to the horizontal range L at bottom of ship center
3=L
1+ (L
2/ 2), after ultrasound wave transmitter module 2 is started working, the ultrasound wave elapsed time T coming along short lines propagated starts to be received by ultrasonic receiver array 10, and reflect along path at random because of multi-path effect, the ultrasound wave that reflection comes is due to path length, the reason that energy disperses, the time that arrives ultrasonic receiver array 10 is greater than T, and the weak strength of waveform, therefore the hyperacoustic time delay receiving from ultrasonic receiver array 10 and waveform intensity can determine the effective range that receives signal accurately, thereby the impact of the multi-path effect of elimination sound wave on measurement result, if it is D that ultrasonic receiver array 10 receives effective signal area length
1, the ultrasound wave launching centre line 15 of transmitting is β with drinking water warning line angular deflection amount, before driving into surveyed area without boats and ships, measure in advance ultrasonic receiver array 10 and receive the fully effective length M of ultrasonic wave range,
If ultrasound wave transmitter module 2 is a; In the time having boats and ships to stop ultrasonic propagation, effective upper change point that ultrasonic receiver array 10 receives range of signal is b; The intersection point of launching hyperacoustic center line and ultrasonic receiver array 10 is c; The intersection point of drinking water warning line and ultrasonic receiver is d; Hull bottom point is e; The center line of boat is f with drinking water warning line intersection point; Hull bottom is H to the distance of drinking water warning line; Horizontal range L between ultrasound wave transmitter module 2 and ultrasonic receiver array 10
4for known; Length D between 2 of b, c
2=(D
1-M/2); Length L between 2 of a, f
3=L
1+ L
2; Distance B between 2 of c, d
3=L
4× tan β; First according to D
1judge with the relation of M, if D
1=M, turns E1; If D
1≤ (M/2-D
3), turn E2; If (M/2-D
3)≤D
1< M, turns E3;
E1, as shown in Figure 6, does not produce and hinders hyperacoustic propagation when boats and ships 12 to be measured cross measurement zone, illustrates that shipping draft is more shallow than warning line, can open the navigation or air flight safely; Turn F;
E2, as shown in Figure 7, hyperacoustic propagation is produced and hindered, and hull bottom draft has exceeded warning line when boats and ships 12 to be measured crosses measurement zone; Turn F;
E3, as shown in Figure 8, hyperacoustic propagation is produced and hindered, but hull bottom draft does not exceed warning line, and warning degree is further judged when boats and ships 12 to be measured crosses measurement zone; In Δ abc and Δ aef, the corresponding two groups of tangent ratios of ∠ a equate, so have:
Release the distance of shipping draft and warning line:
According to the size of H, the draft alert level of boats and ships is carried out to classification, obtain final measurement result;
According to the above, whether the present invention can measure drauht transfinites, and in the time that shipping draft is near warning line, can measure the distance H with warning line, therefore in the time of multiple ultrasound wave transmitter modules combination 13 (as Fig. 9) and the corresponding installation of multiple ultrasound wave receiver module combination 14 (as Figure 10), can be for the concrete draft of surveying vessel oceangoing ship.
F, display alarm module 6 are carried out display alarm
Display alarm module 6 shows or reports to the police according to the measurement result of data processing module 5.
Claims (2)
1. a drauht automobile overweight detecting system, is characterized in that: comprise synchronizing signal generation module (1), ultrasound wave transmitter module (2), ultrasound wave receiver module (3), range finder module (4), data processing module (5) and display alarm module (6);
Described synchronizing signal generation module (1) adopts to be built hardware circuit or utilizes the mode of GPS synchronous clock simultaneously to ultrasound wave transmitter module (2), ultrasound wave receiver module (3) and range finder module (4) transmitting synchronizing signal, and these three modules are started working simultaneously;
Described ultrasound wave transmitter module (2) comprises synchronizing signal receiving trap, ultrasonic transmitter, angle measurement equipment and support; Described synchronizing signal receiving trap is used for receiving synchronizing signal; Ultrasonic transmitter sends the ultrasonic pulse that the low-angle duration is Δ t; Angle measurement equipment is measured ultrasonic transmitter the ultrasound wave launching centre line (15) sending and the angular deflection amount β that absorbs water warning line, for the correction of last measurement result; Support is used for ultrasound wave transmitter module (2) to be fixedly mounted on the side in navigation channel; The ultrasound wave launching centre line (15) that ultrasonic transmitter sends overlaps with the drauht warning line (7) of regulation or approaches;
Described ultrasound wave receiver module (3) comprises linear array formula ultrasound wave receiver module (3) or non-linear array formula ultrasound wave receiver module (3); Described linear array formula ultrasound wave receiver module (3) comprises synchronizing signal receiving trap, linear ultrasound receiver array (8), data transmission device and support; Synchronizing signal receiving trap receives synchronizing signal; Ultrasonic receiver array (10) does not receive and is not stopped and propagate the ultrasound wave of coming by barrier; The measurement result of ultrasonic receiver array (10) is transferred to data processing module (5) by data transmission device; This module is fixedly mounted on the navigation channel opposite side relative with ultrasound wave transmitter module (2) by support; Linear ultrasound receiver array (8) direction vertically and its central point be positioned at or approach drauht warning line (7); Described non-linear array formula ultrasound wave receiver module (3) comprises synchronizing signal receiving trap, buoyancy tank (9), ultrasonic receiver array (10), DGPS locating device and data transmission device; Synchronizing signal receiving trap receives synchronizing signal; Buoyancy tank (9) is used for fixing installs ultrasonic receiver array (10), can in water, keep static state; The array surface of ultrasonic receiver array (10) is greater than the effective rounded face of ultrasound wave (11) that transmitting comes; The position coordinates of buoyancy tank (9) is monitored and located to DGPS locating device, and whether monitoring buoyancy tank (9) departs from effective receiving position; The measurement result of ultrasonic receiver array (10) is transferred to data processing module (5) by data transmission device; Described DGPS locating device is the abbreviation of differential Global Positioning System locating device;
Described range finder module (4) comprises synchronizing signal receiving trap, distance measuring equipment and data transmission device; The ultrasound wave of the point distance measurement of range finder module (4) and ultrasound wave transmitter module (2) sends and is a little positioned on same vertical curve.
2. a detection method for drauht automobile overweight detecting system, is characterized in that: comprise the following steps:
A, synchronizing signal generation module (1) send synchronizing signal
Hardware circuit is built in synchronizing signal generation module (1) employing or GPS synchronous clock sends synchronizing signal, assurance ultrasound wave transmitter module (2), ultrasound wave receiver module (3) and range finder module (4) are started working simultaneously, record the desired data of boats and ships synchronization;
B, ultrasound wave transmitter module (2) send ultrasound wave
Ultrasound wave transmitter module (2) is arranged on navigation channel one side, and it sends low-angle ultrasonic pulse centered by drauht warning line (7); This ultrasonic pulse is fixed frequency, be convenient to water in the differentiation of other sound wave; When ultrasound wave is not blocked in transmission way, complete being received by ultrasound wave receiver module (3) of meeting; In the time being blocked by boats and ships, the ultrasonic signal that ultrasound wave receiver module (3) receives can change midway;
C, ultrasound wave receiver module (3) receive ultrasound wave
Ultrasound wave receiver module (3), according to the difference of measurement environment, is worked respectively in the following ways: when navigation channel, short, the depth of water of two lateral extents and water quality are clear, the corresponding C1 that goes to step when not obvious in many ways of sound wave; Otherwise, go to step C2;
C1, when navigation channel short, the depth of water of two lateral extents and water quality clear, when the multi-path effect of sound wave is not obvious, ultrasound wave receiver module (3) adopts linear array formula ultrasound wave receiver module (3), before whether measurement drauht transfinites, accurately measure in advance the length M that in the time there is no barrier linear ultrasound receiver array (8) can receive hyperacoustic effective range, go to step D;
C2, when at two sides, navigation channel distance, the shallow and water turbidity of water, in the obvious environment of multi-path effect of sound wave, ultrasound wave receiver module (3) is subject to external interference serious, adopts non-linear array formula ultrasound wave receiver module (3), ultrasound wave transmitter module (2) and ultrasound wave receiver module (3) are started working simultaneously, the ultrasound wave elapsed time t coming along short lines propagated starts to be received by ultrasonic receiver array (10), and reflect along path at random because of multi-path effect, the ultrasound wave that reflection comes is due to path length, direction is spuious, the reason that energy disperses, the time that arrives ultrasonic receiver array (10) is greater than t, and the weak strength of waveform, so the effective ultrasonic pulse receiving should be in time t～t+ Δ t interval, and its signal intensity is much larger than interference signal intensity, therefore the hyperacoustic time delay receiving from ultrasonic receiver array (10) and waveform intensity determine the effective range that receives signal accurately, thus the impact of the multi-path effect of elimination sound wave on measurement result, measuring before whether drauht transfinite, accurately measuring in advance in the time there is no barrier ultrasonic receiver array (10) and can receive the diameter length M of hyperacoustic effective round scope,
D, range finder module (4) range finding
Range finder module (4) is started working after receiving synchronizing signal, records the distance L of point distance measurement to hull
1, then measured result is transferred to data processing module (5) by data transmission device;
E, data processing module (5) carry out data processing
If data processing module (5) from the VTS information of boats and ships or AIS information hull half width be L
2, receiving ultrasound wave transmitter module (2) from range finder module (4) is L to the distance of hull
1, ultrasound wave transmitter module (2) is to the horizontal range L at bottom of ship center
3=L
1+ (L
2/ 2), after ultrasound wave transmitter module (2) is started working, the ultrasound wave elapsed time T coming along short lines propagated starts to be received by ultrasonic receiver array (10), and reflect along path at random because of multi-path effect, the ultrasound wave that reflection comes is due to path length, the reason that energy disperses, the time that arrives ultrasonic receiver array (10) is greater than T, and the weak strength of waveform, therefore the hyperacoustic time delay receiving from ultrasonic receiver array (10) and waveform intensity can determine the effective range that receives signal accurately, thereby the impact of the multi-path effect of elimination sound wave on measurement result, if it is D that ultrasonic receiver array (10) receives effective signal area length
1, the ultrasound wave launching centre line (15) of transmitting is β with drinking water warning line angular deflection amount, before driving into surveyed area without boats and ships, measure in advance the fully effective length M of ultrasonic receiver array (10) reception ultrasonic wave range,
If ultrasound wave transmitter module (2) is a; In the time having boats and ships to stop ultrasonic propagation, effective upper change point that ultrasonic receiver array (10) receives range of signal is b; The intersection point of launching hyperacoustic center line and ultrasonic receiver array (10) is c; The intersection point of drinking water warning line and ultrasonic receiver is d; Hull bottom point is e; The center line of boat is f with drinking water warning line intersection point; Hull bottom is H to the distance of drinking water warning line; Horizontal range L between ultrasound wave transmitter module (2) and ultrasonic receiver array (10)
4for known; Length D between 2 of b, c
2=D
1-M/2; Length L between 2 of a, f
3=L
1+ L
2; Distance B between 2 of c, d
3=L
4× tan β; First according to D
1judge with the relation of M, if D
1=M, turns E1; If D
1≤ (M/2-D
3), turn E2; If (M/2-D
3)≤D
1< M, turns E3;
When E1, boats and ships to be measured (12) cross measurement zone, hyperacoustic propagation is not produced and hindered, illustrate that shipping draft is more shallow than warning line, can open the navigation or air flight safely; Turn F;
When E2, boats and ships to be measured (12) cross measurement zone, hyperacoustic propagation is produced and hindered, and hull bottom draft exceedes warning line; Turn F;
When E3, boats and ships to be measured (12) cross measurement zone, hyperacoustic propagation is produced and hindered, but hull bottom draft does not exceed warning line, and warning degree is further judged; In Δ abc and Δ aef, the corresponding two groups of tangent ratios of ∠ a equate, so have:
Release the distance of shipping draft and warning line:
According to the size of H, the draft alert level of boats and ships is carried out to classification, obtain final measurement result;
F, display alarm module (6) are carried out display alarm
Display alarm module (6) shows or reports to the police according to the measurement result of data processing module (5).
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| CN104515994A (en) * | 2014-12-31 | 2015-04-15 | 大连海事大学 | Side-scanning ship draught overloading detection system and operation method thereof |
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| CN106586023A (en) * | 2016-11-29 | 2017-04-26 | 中国直升机设计研究所 | Synchronous data acquisition system and method |
| CN106586023B (en) * | 2016-11-29 | 2019-03-29 | 中国直升机设计研究所 | A kind of Channels Synchronous Data Acquisition System and method |
| CN108896659A (en) * | 2017-06-11 | 2018-11-27 | 嘉兴博感科技有限公司 | A kind of method and system of enlarged configuration health monitoring range |
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