A kind of oil truck volumetric measurement system and method
Technical field
This patent relates to field of measuring technique, particularly relates to a kind of oil truck volumetric measurement system and method。
Background technology
Automobile oil truck is the special special-purpose vehicle of highway transportation liquid petroleum, chemical products, and it is to install metering oil tank on automobile, is not only storage, means of transport, is also the measurement instrument for oil product handing-over, trade settlement after assay approval。It belongs to the working measuring instrument of state compulsion calibrating。In recent years, along with the growing tension of energy products, the price of oil product rises steadily。The main measurement instrument that automobile oil truck transports as oil product, oil truck capacity measurement problem becomes increasingly conspicuous, people's concept of legality steps up, for ensureing the justice, just of trade both sides' oil product handing-over, require oil truck capacity is measured accurately, set up accurately, reliably, quickly, easily oil truck capacity assay device be society needs, the needs of economic development。
The road tanker particularity for its internal structure and the restriction of calibrating environment, adopt the geometric measurement method of measurement method and length value all to have and should not carry out part,。Calibrating requirement according to JJG133-2005 " automobile oil truck vertification regulation ", automobile oil truck calibrating is typically now all capacity relative method or the effusion meter method of adopting, and arbitration calibrating is as the criterion with capacity relative method。But capacity relative method uses second-class metal tank as standard metering measuring device, adopts that artificial reading, workload are big, efficiency is low, labor intensity is big, the difficult quality guarantee of verification result。
Prior art also discloses a kind of measuring volume of horizontal metal tank method: in canister, a certain height fixes a laser feeler, the polar coordinate of each point on each horizontal cross-section of canister are measured at the elevation angle or the angle of depression that constantly adjust laser feeler, the canister height in each horizontal section area and vertical cross-section direction is calculated, it is thus achieved that the volume of canister by these polar coordinate。This measuring method needs constantly to adjust the elevation angle or the angle of depression of laser feeler, to ensure that the polar coordinate measured are on sustained height horizontal cross-section, easily produce error, and it is complicated that this method controls process, measuring speed is slow, and simply the polar coordinate of each point on each horizontal cross-section of canister measured simply being calculated canister volume, certainty of measurement is low。
Prior art also discloses a kind of volume testing system for horizontal tanks and using method thereof, test system includes controller and connected PC, the main detector of test system includes laser detector, rotation platform and sloping platform, rotation platform is fixed vertical table top, constant tilt platform on this table top, fixed laser detector on sloping platform, rotation platform is along rotation platform place Plane Rotation, and sloping platform vertically table top rotates。Using method comprises the following steps: main detector is inverted in horizontal tank mouth by (1), and laser detector stretches into tank mouth position;(2) main detector is connected with controller, control parameter in controller is set, and relevant order is transferred to main detector by communication cable, now rotation platform is along rotary flat table top 0-360 ° rotation, and sloping platform is table top 0-180 ° rotation vertically;(3) adjusted the angle of pitch a of detector, corresponding each angle of pitch a angle by sloping platform, rotation platform drives the laser of detector with one group of data of anglec of rotation b interval measurement in a circumference;(4) method identical with step (3), changes angle of pitch a angle from 0 ° to 180 °, completes whole test;(5) testing more than and whole storage tank is divided into several sections, until having measured all profile datas, main detector is automatically stopped, and then preserves corresponding measurement data。This system and method need to repeatedly adjust the angle of pitch of detector, controls process complicated, and measuring speed is slow。
Summary of the invention
In order to overcome the deficiency of background technology, it is an object of the invention to provide a kind of oil truck volumetric measurement system and method reducing workload, quickening measuring speed, raising certainty of measurement。
The present invention for achieving the above object, by the following technical solutions:
The present invention provides a kind of oil truck volumetric measurement system, and including truncation surface scanning subsystem, horizontal radial deviation measures subsystem, axial length measures subsystem, control and computing subsystem;
Truncation surface scanning subsystem, horizontal radial deviation measure subsystem, axial length is measured subsystem and is all connected with control and computing subsystem;
Truncation surface scanning subsystem is used for being insinuated into inside oil tank, and the truncation surface of oil tank is scanned, and obtains area and the length data of truncation surface;
Horizontal radial deviation measures subsystem for measuring the radial missing of the axial both sides of described oil tank, obtains radial missing data;
Axial length measures subsystem for measuring the axial length of described oil tank, obtains axial length data;
Control and computing subsystem is for measuring subsystem be controlled truncation surface scanning subsystem, horizontal radial deviation measurement subsystem, axial length, and the data obtained according to described three subsystems calculate the volume of described oil tank。
Described truncation surface scanning subsystem is laser scanning device。
Described laser scanning device sweep limits in the horizontal direction is 0 °~360 °。
Described laser scanning device is 0 °~180 ° in the sweep limits of vertical direction。
Described horizontal radial deviation is measured subsystem and is made up of grating scale and auxiliary equipment。
Described control and computing subsystem are PC。
The present invention also provides for a kind of oil truck method for measuring volume, it is characterised in that:
Inside oil tank, choose a truncation surface, obtain area and the length data of described truncation surface;
The area of the described truncation surface according to acquisition and length data, calculate the bulking value of described truncation surface;
Measure the radial missing of the axial both sides of described oil tank, obtain radial missing data;
With described truncation surface volume for benchmark, by the bulking value of described truncation surface and described radial missing data, calculate described oil tank bulking value of other parts except described truncation surface;
Measure the axial length of described oil tank, obtain axial length data;
According to described truncation surface bulking value, except described truncation surface the bulking value of other parts, described axial length data, calculate the volume of whole described oil tank。
Described inside oil tank, choose a truncation surface, obtain area and the length data of described truncation surface, the concrete area and the length data that adopt laser scanning to obtain described truncation surface。
The radial missing of the axial both sides of the described oil tank of described measurement, concrete employing grating measuring obtains described radial missing data。
The invention have the benefit that
A kind of Novel oil tank vehicle volume provided by the invention measures system and method, compared with background technology, improves work efficiency, reduces working strength, save man power and material, reduces the interference of personal error;Meet the technology requirement that national rule specifies, it is ensured that verification result accurate;Simple to operate, quick, accelerate measuring speed, improve measuring accuracy。
Below in conjunction with drawings and Examples, the invention will be further described。
Accompanying drawing explanation
Fig. 1 is oil truck volumetric measurement system architecture diagram provided by the invention;
Fig. 2 is the flow chart of oil truck method for measuring volume provided by the invention;
Fig. 3 is truncation surface scanning equipment in oil truck volumetric measurement system provided by the invention;
Fig. 4 is the schematic diagram using laser scanning device to measure in Fig. 3 in truncation surface scanning equipment;
Fig. 5 is the structural representation of grating scale in oil truck volumetric measurement system provided by the invention。
Detailed description of the invention
It is an object of the invention to provide a kind of oil truck volumetric measurement system and method reducing workload, quickening measuring speed, raising certainty of measurement。
Below in conjunction with specific embodiment and accompanying drawing, the present invention is described in detail:
As it is shown in figure 1, the present invention provides a kind of oil truck volumetric measurement system, measure subsystem 12, axial length measurement subsystem 13 including truncation surface scanning subsystem 11, horizontal radial deviation, control and computing subsystem 14;
Truncation surface scanning subsystem 11, horizontal radial deviation measure subsystem 12, axial length is measured subsystem 13 and is all connected with control and computing subsystem 14;
Truncation surface scanning subsystem 11 is used for being insinuated into inside oil tank, and the truncation surface of oil tank is scanned, and obtains area and the length data of truncation surface;
Horizontal radial deviation measures subsystem 12 for measuring the radial missing of the axial both sides of described oil tank, obtains radial missing data;
Axial length measures subsystem 13 for measuring the axial length of described oil tank, obtains axial length data;
Control and computing subsystem 14 is for measuring subsystem 13 be controlled truncation surface scanning subsystem 11, horizontal radial deviation measurement subsystem 12, axial length, and the data obtained according to described three subsystems calculate the volume of described oil tank。
It is also preferred that the left truncation surface scanning subsystem 11 can use laser scanning device, it is insinuated into inside oil tank, the truncation surface of oil tank is scanned, obtain area and the length data of truncation surface。Described laser scanning device sweep limits in the horizontal direction is 0 °~360 °, and described laser scanning device is 0 °~180 ° in the sweep limits of vertical direction。
Can be made up of grating scale and auxiliary equipment it is also preferred that the left horizontal radial deviation measures subsystem 12。And control with computing subsystem 14 to be PC。
As in figure 2 it is shown, the present invention also provides for a kind of oil truck method for measuring volume, comprise the following steps:
Step 101: choose a truncation surface inside oil tank, obtains area and the length data of described truncation surface;
Step 102: according to the area of the described truncation surface obtained and length data, calculate the bulking value of described truncation surface;
Step 103: measure the radial missing of the axial both sides of described oil tank, obtains radial missing data;
Step 104: with described truncation surface volume for benchmark, by the bulking value of described truncation surface and described radial missing data, calculates described oil tank bulking value of other parts except described truncation surface;
Step 105: measure the axial length of described oil tank, obtains axial length data;
Step 106: according to described truncation surface bulking value, except described truncation surface the bulking value of other parts, described axial length data, calculate the volume of whole described oil tank。
In described step 101, the measuring method taked is laser scanning。Laser scanning device is insinuated into inside oil tank, 0 ° in the horizontal direction~360 °, truncation surface is scanned in the scope of vertical direction 0 °~180 °, measures area and the length data of described truncation surface。
In described step 103, the measuring method taked is grating measuring。Utilize auxiliary device that grating scale stands on oil tank both sides, by detecting Moire fringe number, carry out " reading " grating scale, then further according to the effect of drive circuit, calculate displacement and the speed of grating scale (as shown in Figure 5), and then calculate the radial missing of road tanker。
As shown in Figures 3 and 4, for truncation surface scanning equipment in the oil truck volumetric measurement system that the embodiment of the present invention provides, T axle goes up 360 ° of rotations in the horizontal direction, it is a that Z axis adjusts the luffing angle of laser scanning device, laser scanning device is insinuated into inside oil tank, rotate 0 °~360 ° in the horizontal direction, in the scope of vertical direction rotation 0 °~180 °, truncation surface be scanned, measure area and the length data of described truncation surface。
As it is shown in figure 5, be the structural representation of grating scale, including light source 1, lens 2, indication grating 3, light-sensitive element 4 and driver circuit 5, also include a scale grating 6。The light that light source sends passes sequentially through lens 2, scale grating 6, indication grating 3, light-sensitive element 4 are finally sent to driver circuit 5 and processed。
Although the present invention is with preferred embodiment openly as above, but they are not for limiting the present invention, and protection scope of the present invention should be as the criterion with the content that claims hereof protection domain defines。Any it has the knack of the art person, without departing from the spirit and scope of the present invention, the various changes made or equivalent replace, all should belong to protection scope of the present invention。