CN107145104A - Inland navigation craft load-carrying measuring system and its measuring method - Google Patents
Inland navigation craft load-carrying measuring system and its measuring method Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000005259 measurement Methods 0.000 claims abstract description 16
- 239000000523 sample Substances 0.000 claims abstract description 14
- 239000000446 fuel Substances 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 239000002283 diesel fuel Substances 0.000 claims description 28
- 238000006243 chemical reaction Methods 0.000 claims description 16
- 238000006073 displacement reaction Methods 0.000 claims description 13
- 238000012937 correction Methods 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000004513 sizing Methods 0.000 claims description 6
- 239000003651 drinking water Substances 0.000 claims description 5
- 235000020188 drinking water Nutrition 0.000 claims description 5
- 102000016550 Complement Factor H Human genes 0.000 claims description 4
- 108010053085 Complement Factor H Proteins 0.000 claims description 4
- 230000001419 dependent effect Effects 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 4
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- 230000007547 defect Effects 0.000 abstract description 2
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- 238000005516 engineering process Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 206010034703 Perseveration Diseases 0.000 description 1
- 241000785736 Pholis crassispina Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
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Abstract
The invention discloses inland navigation craft load-carrying measuring system and its measuring method.Belong to inland navigation craft load-carrying field of measuring technique, in order to solve the deficiency that spot ship load-carrying measurement is present, it is narrow and small for River Channel river surface, navigation channel is fixed, the characteristics of river flow change is small, the present invention obtains the measuring system and its measuring method of current ship load by measuring the driving trace, the ship running speed of a ship or plane and ship fuel consumption of ship, and this method is simple in construction, it is easy for installation, can overcome prior art ship periphery can not install sensor defect.Including oil consumption sensor, speed probe, wireless module, satellite positioning module, microcontroller, display, memory and the timer being separately positioned on ship, in addition to it is arranged on the host computer server of Gang Hang administrative centers；The oil consumption sensor, speed probe, wireless module, satellite positioning module, display, memory and timer are connected with microcontroller respectively, and the microcontroller passes through wireless module and host computer server wireless connection.
Description
Technical field
The present invention relates to inland navigation craft load-carrying field of measuring technique, and in particular to inland navigation craft load-carrying measuring system and its survey
Amount method.
Background technology
Traditional ship load beasurement base ship (water line) load-carrying markings are estimated with ship load empirical coefficient
Arrive, can be in the hope of the ship displacement and loading capacity at that time by consulting relevant ship curve map and calculating after measurement drinking water.
Conventional load-carrying measurement has artificial observation, ultrasonic measurement, pressure measxurement, electric water gauge, laser water-level gauge, image procossing at present
Technology etc..
Artificial observation, exactly obtains ship by the observer having been trained for a long time by observing the water gauge mark of ship
The real draft of oceangoing ship, carries out artificial observation manual record and manually compares.The advantage of this load measurement method be it is simple and convenient, no
Need to increase extra measuring apparatus, have the disadvantage observation often with subjectivity, error is big.
Ultrasonic wave load-carrying measurement is exactly that, according to ultrasonic ranging principle, measurement ship is eaten on the basis of hull side deck
Water, by ultrasonic sensor through a measurement cradle hangs in hull gunnel, by measuring the time that ultrasonic echo is returned, according to
The there and then velocity of sound, measures main ship deck to parameters such as the distances of the water surface, calculates drinking water value, and search for deadweight of vessel number
According to file, deadweight of vessel is obtained.The precision of ultrasonic measurement is influenceed by factors, but the error of the velocity of sound directly affects survey
The precision of amount, and the velocity of sound is relevant with Media density, atmospheric density is affected by temperature larger in atmosphere.In addition, the biography
Sensor is difficult, Difficulty suitably local installed in ship.
The change of the depth of water can be reflected by the change of hydraulic pressure, using this characteristic, in ship in ballast water line
Pressure sensor is installed on position, when ship loading aft dr is deepened, the numerical value obtained according to pressure sensor, by conversion
Afterwards, the draft of ship can both be drawn.The advantage of this method is can to measure the weight of ship online, in real time, and its is accurate
Degree is of a relatively high, but poor operability, and its reason is that pressure sensor measurement shipping draft needs, and pressure sensor is straight
Connect on the outside of the hull, and inland navigation craft various structures, hull is steel plate structure, sensor do not allow to be welded on hull or
On ship side, although therefore this method can accurately measure, can not be generalized on inland navigation craft and apply.
The basic functional principle of electric water gauge is the electric conductivity using water, using the method similar to artificial observation water level.
It is to be successively read each sense contact i.e. conductance of probe from top to bottom.The position of probe and water surface contact is being detected, is being visited
Conductance between pin can be mutated increase so that it is determined that water level value.Patent document " a kind of inland navigation craft load measuring device " is to be based on
This method design.Because the electronic measuring part of electric water gauge is directly contacted with water body, easily destroyed by external environment, and
And electronic circuit should not be arranged.So electric water gauge is seldom applied on ship.
The measuring principle of laser water-level gauge is similar to ultrasonic measurement, using the consistency of the light velocity, by measuring laser light
The beam round time, water level information at that time is obtained indirectly.Document " handheld-type intelligent drauht and load-carrying measuring instrument are developed "
And " a kind of novel intelligent shipping depth gauge detector " is using laser technology design.Although the directive property of laser surpasses relatively
More concentrate, but easily influenceed by floater for sound wave, while the intensity of laser reflection is situated between by reflecting interface and air
The influence of matter situation is larger, if continued using being difficult to eliminate the effects of the act, moreover, laser sensor also can not be on the ship side of ship
Install, therefore be adapted to hand-held and use temporarily.
Using processing image come automatic surveying vessel oceangoing ship water gauge scale, the analysis carried out by the video image to water gauge claims
For image measuring method.Scale word on ship side, can be carried out reading, identification by computer automatic discrimination, so both can be with complete
Site preparation one records the water gauge scale and drinking water line position in whole observation stage, makes it possible follow-up data processing.Document《Figure
As application of the treatment technology in drauht automatic checkout system》With《Ship draught value detection method is studied》It is exactly base
A kind of electric water gauge instrument designed in image procossing.The scope that the data acquisition imaging sensor that this method is used can be installed
It is larger, such as at the top of ship-handling cabin, but in River Channel, many navigation channel gates limitation ships height, inland navigation craft in order to
Reach it is often interim within the scope of limit for height remove driving cabin, such perseveration necessarily affects the measurement accuracy of sensor, manages
Need to re-scale by upper measuring system, therefore, the load measurement method based on image procossing can not be fitted on inland navigation craft
With.
Above-mentioned load-carrying measuring method, artificial observation method can not realize on-line measurement, directly be surveyed using various sensors
Loading gage weight method, it can not find the position of install sensor in the periphery of inland navigation craft in actual applications, and causing can not
Realize the measurement of loading capacity.
The content of the invention
The present invention is to measure the deficiency existed, navigation channel narrow and small for River Channel river surface to solve spot ship load-carrying
Fixed, the characteristics of river flow change is small is obtained by measuring the driving trace, the ship running speed of a ship or plane and ship fuel consumption of ship
The measuring system and its measuring method of current ship load are taken, this method is simple in construction, easy for installation, can overcome prior art
Ship periphery can not install sensor defect.
Above technical problem is solved by following technical proposal：
Inland navigation craft load-carrying measuring system, including the oil consumption sensor, speed probe, wireless being separately positioned on ship
Module, satellite positioning module, microcontroller, display, memory and timer, in addition to it is arranged on Gang Hang administrative centers
Host computer server；The oil consumption sensor, speed probe, wireless module, satellite positioning module, display, memory and
Timer is connected with microcontroller respectively, and the microcontroller passes through wireless module and host computer server wireless connection.
A kind of measuring method suitable for inland navigation craft load-carrying measuring system, the measurement process of the measuring method is as follows：
The navigation channel concurrent-countercurrent correction factor H of the tested cruiseway band of position is stored in host computer server in advance；
Ship model, ship deadweight M and several demarcation drafts of the advance current ship that is stored with memory
TiDistinguish corresponding demarcation loading capacity Wi；
Speed probe measures engine speed n, and when rotating speed n is not zero, microcontroller is every by satellite positioning module
Vessel position information was obtained every 1 minute, the mileage then travelled according to the tracing point Ship ' of ship；
Microcontroller, in the ship trajectory in navigation channel, determines direction of ship travel and position according to ship, then by navigation side
Host computer server is sent to by wireless module to positional information, host computer server according to acquired ship information,
The concurrent-countercurrent correction factor for prestoring the navigation channel in the server is sent to microcontroller.
Under the control of the micro-controller, the distance travelled of ship is measured for E by satellite positioning module, obtained by timer
It is t to take running time, and the average speed V in ship running can be obtained by E/t, and ship running is measured by oil consumption sensor
In fuel consumption L；
The current draft T of ship is calculated by the draft formula of ship, microcontroller first determines currently to eat
The interval T for the nominal data that water depth T is stored in memoryi-1, Ti+1Scope, then according to Ti-1, Ti+1With Wi-1, Wi+1Line
Property corresponding relation, current draft T is substituted into the interval linear line is calculated, and draws loading capacity, in the display
Display；And upload to the deadweight of vessel calculated in host computer server by wireless module.
The present invention it is simple in construction, it is easy for installation, can overcome prior art ship periphery can not install sensor lack
Fall into.Both ship operation person can have been allowed to grasp current deadweight of vessel, ship-handling personnel can also be allowed to grasp the load of ship in real time
Weight, is that the management of ship is brought convenience.
Preferably, the oil consumption sensor is arranged in the inflow pipeline of engine of boat and ship.
Preferably, the speed probe is arranged on the tachometric survey position at engine of boat and ship.
Preferably, the satellite positioning module is GPS module.
Preferably, the amount of fuel that ship is consumed in certain time is L, its energy for being delivered to engine of boat and ship can table
It is shown as：
Q=k1*L (1)
k1=4.18 ρDiesel oil*c*ηDiesel oilFor energy conversion factor, ρDiesel oilFor the density of diesel oil, c is the thermal capacity of diesel oil, ηDiesel oilFor
The conversion efficiency of diesel combustion, it is seen that ρDiesel oil、c、ηDiesel oilIt is constant；
It is interior according to energy conversion and transfer principle, it is considered to the conversion efficiency of engine and the transmission efficiency of transmission mechanism
The concurrent-countercurrent factor in river navigation channel, the energy conversion that diesel oil is consumed is to the effective power of engine of boat and ship：
Pe=(k1*L*ηEngine*ηTransmission*H)/t (2)
Wherein, t is the ship running time of measuring section, ηEngineFor engine conversion efficiency, ηTransmissionPassed for marine drive mechanism
Efficiency is passed, H is navigation channel concurrent-countercurrent correction factor.
Again because the main frame effective power and the relation of vessel displacement and the speed of a ship or plane of ship are shown below：
Pe=(Δ2/3*V3)/Ce (3)
Wherein, Δ is the displacement of ship, and V is ship speed, and Ce is the Admiralty constant of ship；
The relation of marine diesel consumption and displacement and the speed of a ship or plane can be obtained by formula (2), (3), is obtained：
(L/t)*k1*ηEngine*ηTransmission*H*Ce=Δ2/3*V3 (4)
K in ship for having been devised by factory, formula (4)1、ηEngine、ηTransmissionAnd CeIt is constant, H is in time of measuring
Also it is inside constant, therefore makes k2=ηEngine*ηTransmission*Ce* H, then obtain：
(L/t)*k1*k2=Δ2/3*V3. (5)
It is according to principle of naval architecture, the displacement of ship and the relation of draft again：
Δ=ρ * Cb*LLbp*B*T (6)
Wherein, ρ is the density of water, CbThe Block Coefficient of ship, LLbpFor between perpendicular, B is ship molded breadth, and T is to eat
Water depth；After ship sizing, ρ, Cb、LLbp, B be constant, if k3=ρ * Cb*LLbp*B；
It is according to the current draft formula that formula (5), (6) can obtain ship：
T2/3=(L*k1*k2)/(t*k3 2/3*V3) (7)
It can be seen that, obtain ship running process spent duration t, traveling during fuel consumption L, ship running speed of a ship or plane V
And the dependent constant after ship sizing, you can the draft T of ship is obtained by formula (7).
If eaten preferably, the current draft T of ship falls prestoring certain two demarcation in memory
Water depth Ti-1And Ti+1Between；
Then will demarcation draft Ti-1With with demarcation draft Ti-1Corresponding loading capacity Wi-1It is set as two dimensional surface
On a point A, i.e. point A (Ti-1, Wi-1)；Will demarcation draft Ti+1With with demarcation draft Ti+1Corresponding loading capacity
Wi+1It is set as another point B on two dimensional surface, i.e. point B (Ti+1, Wi+1)；
Utilize point A (Ti-1, Wi-1) and B (Ti+1, Wi+1) this 2 points ask for line segment AB；If line segment AB slope is K, intercept
For b, the current draft T of ship is substituted into straight line W=K*T+b, you can obtain the live load amount W of ship.
The present invention can reach following effect：
The present invention it is simple in construction, it is easy for installation, can overcome prior art ship periphery can not install sensor lack
Fall into.Both ship operation person can have been allowed to grasp current deadweight of vessel, ship-handling personnel can also be allowed to grasp the load of ship in real time
Weight, is that the management of ship is brought convenience.
Brief description of the drawings
Fig. 1 is a kind of circuit theory attachment structure schematic block diagram of the present invention.
Embodiment
The present invention is further illustrated with embodiment below in conjunction with the accompanying drawings.
Embodiment, inland navigation craft load-carrying measuring system is shown in Figure 1, including the oil consumption being separately positioned on ship is passed
Sensor 1, speed probe 2, wireless module 3, satellite positioning module 4, microcontroller 5, display 6, memory 7 and timer
8, in addition to it is arranged on the host computer server 9 of Gang Hang administrative centers；The oil consumption sensor, speed probe, wireless module,
Satellite positioning module, display, memory and timer are connected with microcontroller respectively, and the microcontroller passes through wireless module
With host computer server wireless connection.
A kind of measuring method suitable for inland navigation craft load-carrying measuring system, the measurement process of the measuring method is as follows：
The navigation channel concurrent-countercurrent correction factor H of the tested cruiseway band of position is stored in host computer server in advance；
Ship model, ship deadweight M and several demarcation drafts of the advance current ship that is stored with memory
TiDistinguish corresponding demarcation loading capacity Wi；
Speed probe measures engine speed n, and when rotating speed n is not zero, microcontroller is every by satellite positioning module
Vessel position information was obtained every 1 minute, the mileage then travelled according to the tracing point Ship ' of ship；
Microcontroller, in the ship trajectory in navigation channel, determines direction of ship travel and position according to ship, then by navigation side
Host computer server is sent to by wireless module to positional information, host computer server according to acquired ship information,
The concurrent-countercurrent correction factor for prestoring the navigation channel in the server is sent to microcontroller.
Under the control of the micro-controller, the distance travelled of ship is measured for E by satellite positioning module, obtained by timer
It is t to take running time, and the average speed V in ship running can be obtained by E/t, and ship running is measured by oil consumption sensor
In fuel consumption L；
The current draft T of ship is calculated by the draft formula of ship, microcontroller first determines currently to eat
The interval T for the nominal data that water depth T is stored in memoryi-1, Ti+1Scope, then according to Ti-1, Ti+1With Wi-1, Wi+1Line
Property corresponding relation, current draft T is substituted into the interval linear line is calculated, and draws loading capacity, in the display
Display；And upload to the deadweight of vessel calculated in host computer server by wireless module.
The amount of fuel that ship is consumed in certain time is L, and its energy for being delivered to engine of boat and ship is represented by：
Q=k1*L (8)
k1=4.18 ρDiesel oil*c*ηDiesel oilFor energy conversion factor, ρDiesel oilFor the density of diesel oil, c is the thermal capacity of diesel oil, ηDiesel oilFor
The conversion efficiency of diesel combustion, it is seen that ρDiesel oil、c、ηDiesel oilIt is constant；
It is interior according to energy conversion and transfer principle, it is considered to the conversion efficiency of engine and the transmission efficiency of transmission mechanism
The concurrent-countercurrent factor in river navigation channel, the energy conversion that diesel oil is consumed is to the effective power of engine of boat and ship：
Pe=(k1*L*ηEngine*ηTransmission*H)/t (9)
Wherein, t by ship by measuring the duration that section is spent, ηEngineFor engine conversion efficiency, ηTransmissionPassed for ship
Motivation structure transmission efficiency, H is navigation channel concurrent-countercurrent correction factor.
Again because the main frame effective power and the relation of vessel displacement and the speed of a ship or plane of ship are shown below：
Pe=(Δ2/3*V3)/Ce (10)
Wherein, Δ is the displacement of ship, and V is ship speed, and Ce is the Admiralty constant of ship；
The relation of marine diesel consumption and displacement and the speed of a ship or plane can be obtained by formula (9), (10), is obtained：
(L/t)*k1*ηEngine*ηTransmission*H*Ce=Δ2/3*V3 (11)
K in ship for having been devised by factory, formula (11)1、ηEngine、ηTransmissionAnd CeIt is constant, H is in time of measuring
Also it is inside constant, therefore makes k2=ηEngine*ηTransmission*Ce* H, then obtain：
(L/t)*k1*k2=Δ2/3*V3 (12)
It is according to principle of naval architecture, the displacement of ship and the relation of draft again：
Δ=ρ * Cb*LLbp*B*T (13)
Wherein, ρ is the density of water, CbThe Block Coefficient of ship, LLbpFor between perpendicular, B is ship molded breadth, and T is to eat
Water depth；After ship sizing, ρ, Cb、LLbp, B be constant, if k3=ρ * Cb*LLbp*B；
It is according to the current draft formula that formula (12), (13) can obtain ship：
T2/3=(L*k1*k2)/(t*k3 2/3*V3) (14)
It can be seen that, obtain ship running process spent duration t, traveling during fuel consumption L, ship running speed of a ship or plane V
And the dependent constant after ship sizing, you can the draft T of ship is obtained by formula (14).
If the current draft T of ship, which falls, is prestoring in memory certain two demarcation draft Ti-1
And Ti+1Between；
Then will demarcation draft Ti-1With with demarcation draft Ti-1Corresponding loading capacity Wi-1It is set as two dimensional surface
On a point A, i.e. point A (Ti-1, Wi-1)；Will demarcation draft Ti+1With with demarcation draft Ti+1Corresponding loading capacity
Wi+1It is set as another point B on two dimensional surface, i.e. point B (Ti+1, Wi+1)；
Utilize point A (Ti-1, Wi-1) and B (Ti+1, Wi+1) this 2 points ask for line segment AB；If line segment AB slope is K, intercept
For b, the current draft T of ship is substituted into straight line W=K*T+b, you can obtain the live load amount W of ship.
Embodiments of the present invention are described above in conjunction with accompanying drawing, but are not limited when realizing by above-described embodiment, this area
Those of ordinary skill can make a variety of changes or change within the scope of the appended claims.
Claims (6)
1. inland navigation craft load-carrying measuring system, it is characterised in that oil consumption sensor, rotating speed including being separately positioned on ship are passed
Sensor, wireless module, satellite positioning module, microcontroller, display, memory and timer, in addition to it is arranged on port boat
The host computer server of administrative center；The oil consumption sensor, speed probe, wireless module, satellite positioning module, display
Device, memory and timer are connected with microcontroller respectively, the microcontroller by wireless module and host computer server without
Line is connected.
2. inland navigation craft load-carrying measuring system according to claim 1, it is characterised in that the oil consumption sensor is arranged on
In the inflow pipeline of engine of boat and ship, the speed probe is arranged on the tachometric survey position at engine of boat and ship.
3. inland navigation craft load-carrying measuring system according to claim 1, it is characterised in that the satellite positioning module is
GPS module.
4. the measuring method of a kind of inland navigation craft load-carrying measuring system suitable for described in claim 1, it is characterised in that described
The measurement process of measuring method is as follows：
The navigation channel concurrent-countercurrent correction factor H of the tested cruiseway band of position is stored in host computer server in advance；
Ship model, ship deadweight M and several demarcation drafts T of the advance current ship that is stored with memoryiDivide
Not corresponding demarcation loading capacity Wi；
Speed probe measures engine speed n, and when rotating speed n is not zero, microcontroller is by satellite positioning module every 1 point
Clock obtains vessel position information, the mileage then travelled according to the tracing point Ship ' of ship；
Microcontroller, in the ship trajectory in navigation channel, determines direction of ship travel and position according to ship, then will navigation direction and
Positional information is sent to host computer server by wireless module, host computer server according to acquired shipping information,
The concurrent-countercurrent correction factor H for prestoring the navigation channel in the server is sent to microcontroller；
Under the control of the micro-controller, the distance travelled for measuring ship by satellite positioning module is E, is obtained and gone by timer
The time is sailed for t, the average speed V in ship running is obtained by E/t, the oil consumption in ship running is measured by oil consumption sensor
Measure L；
The current draft T of ship is calculated by the draft formula of ship, microcontroller first determines that current drinking water is deep
The interval T for the nominal data that degree T is stored in memoryi-1, Ti+1Scope, then according to Ti-1, Ti+1With Wi-1, Wi+1It is linear right
It should be related to, current draft T is substituted into the interval linear line is calculated, and is drawn loading capacity, is shown in the display；
And upload to the deadweight of vessel calculated in host computer server by wireless module.
5. the measuring method of inland navigation craft load-carrying measuring system according to claim 4, it is characterised in that
The amount of fuel that ship is consumed in certain time is L, and its energy for being delivered to engine of boat and ship is represented by：
Q=k1*L (1)
k1=4.18 ρDiesel oil*c*ηDiesel oilFor energy conversion factor, ρDiesel oilFor the density of diesel oil, c is the thermal capacity of diesel oil, ηDiesel oilFor diesel oil
The conversion efficiency of burning, it is seen that ρDiesel oil、c、ηDiesel oilIt is constant；
According to energy conversion and transfer principle, it is considered to the conversion efficiency of engine and the transmission efficiency of transmission mechanism, inland river boat
The concurrent-countercurrent factor in road, the energy conversion that diesel oil is consumed is to the effective power of engine of boat and ship：
Pe=(k1*L*ηEngine*ηTransmission*H)/t (2)
Wherein, t is the ship running time of measuring section, ηEngineFor engine conversion efficiency, ηTransmissionTransmit and imitate for marine drive mechanism
Rate, H is navigation channel concurrent-countercurrent correction factor.
Again because the main frame effective power and the relation of vessel displacement and the speed of a ship or plane of ship are shown below：
Pe=(Δ2/3*V3)/Ce (3)
Wherein, Δ is the displacement of ship, and V is ship speed, and Ce is the Admiralty constant of ship；
The relation of marine diesel consumption and displacement and the speed of a ship or plane can be obtained by formula (2), (3), is obtained：
(L/t)*k1*ηEngine*ηTransmission*H*Ce=Δ2/3*V3 (4)
K in ship for having been devised by factory, formula (4)1、ηEngine、ηTransmissionAnd CeIt is constant, H is in time of measuring
For constant, therefore make k2=ηEngine*ηTransmission*Ce* H, then obtain：
(L/t)*k1*k2=Δ2/3*V3 (5)
It is according to principle of naval architecture, the displacement of ship and the relation of draft again：
Δ=ρ * Cb*LLbp*B*T (6)
Wherein, ρ is the density of water, CbFor the Block Coefficient of ship, LLbpFor between perpendicular, B is ship molded breadth, and T is drinking water
Depth；After ship sizing, ρ, Cb、LLbp, B be constant, if k3=ρ * Cb*Lbp*B；
It is according to the current draft T that formula (5), (6) can obtain ship：
T2/3=(L*k1*k2)/(t*k3 2/3*V3) (7)
It can be seen that, obtain ship running process spent duration t, traveling during fuel consumption L, ship running speed of a ship or plane V and
Dependent constant after ship sizing, you can the draft T of ship is obtained by formula (7).
6. the measuring method of inland navigation craft load-carrying measuring system according to claim 5, it is characterised in that
If the current draft T of ship, which falls, is prestoring in memory certain two demarcation draft Ti-1And Ti+1
Between；
Then will demarcation draft Ti-1With with demarcation draft Ti-1Corresponding loading capacity Wi-1It is set as on two dimensional surface
One point A, i.e. point A (Ti-1, Wi-1)；Will demarcation draft Ti+1With with demarcation draft Ti+1Corresponding loading capacity Wi+1
It is set as another point B on two dimensional surface, i.e. point B (Ti+1, Wi+1)；
Utilize point A (Ti-1, Wi-1) and B (Ti+1, Wi+1) this 2 points ask for line segment AB；If it is b that line segment AB slope, which is K, intercept,
The current draft T of ship is substituted into straight line W=K*T+b, you can obtain the live load amount W of ship.
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| CN201710371276.4A CN107145104B (en) | 2017-05-17 | 2017-05-17 | Inland navigation craft load-carrying measuring system and its measurement method |
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| CN201710371276.4A CN107145104B (en) | 2017-05-17 | 2017-05-17 | Inland navigation craft load-carrying measuring system and its measurement method |
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| CN107145104B CN107145104B (en) | 2019-04-05 |
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| CN (1) | CN107145104B (en) |
Cited By (3)
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| CN109815862A (en) * | 2019-01-11 | 2019-05-28 | 苏州德普思锐信息科技有限公司 | Identifying system and its measurement method based on image recognition water gauge scale |
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