CN205317495U - Full -automatic calibrating installation of fuel tanker aircraft - Google Patents

Abstract

The utility model discloses a full -automatic calibrating installation of fuel tanker aircraft. Including the three: sensor and actuating mechanism, embedded ARM treater, host computer verification system. The device utilizes embedded technology and sensor technology, realizes tanker aircraft calibrating installation's the big or small standard measurer of auto leveling, automatic switch -over, the flow dimension of automatically regulated nozzle, through camera and temperature sensor character recognition oil liquid level, temperature to the serial ports sends for the host computer, and compensation calculation obtains actual oil capacity in the host computer, and compares with fuel tanker aircraft indicating value, obtains the error of indication of fuel tanker aircraft, realize little in, the large -traffic disposable examination of tanker aircraft, carry out disposable oil extraction through host computer signals through controller control solenoid and oil scavenging pump after the examination is accomplished, preserve original at last and print the probation redport.

Description

The full-automatic calibrating installation of fuel charger

Technical field

The utility model relates to the full-automatic calibrating installation of a kind of fuel charger, is applicable to the calibrating of changing fast and automatically of all oil product fuel chargers, belongs to electric automatization detection field.

Background technology

Fuel charger is one of most important measurement instrument of product oil field of circulation trade settlement, 0.3 grade of its accuracy requirement. For ensureing the accurate-metering of oil product, the calibration operation of fuel charger is even more important. Domestic measurement technology mechanism adopts the error of indication of Static Volumetric Method detecting fuel dispenser more, uses standard capacity measure standard set-up detecting fuel dispenser. The calculating of standard capacity measure capability value depends primarily on temperature in metering neck liquid level and standard capacity measure, its metering neck liquid level and temperature value are measured and are adopted the mode that manually reads metering neck scale and thermometer to carry out, three major defects that therefore original static volumetric method fuel charger calibrating installation exists:

1) by drum levelling device, inaccuracy, and survey crew manual adjustment screw, workload is heavy;

2) fuel charger of every calibrating, all needs temperature in manual read's taken amount device, fuel charger outlet temperature and amount neck liquid level, inaccurate, unreliable, efficiency is low;

3) difficulty in computation is large, because of at gas station's execute-in-place, manually obtains after liquid level and temperature value, need artificial calculate 20 DEG C at the orthobaric volume of oil product, amount of calculation is large, inconvenience is easily made mistakes, inefficiency.

Utility model content

In order to solve the problems of the technologies described above, the utility model provides the fuel charger that a kind of automaticity is high, efficiency is high, accuracy of detection is high full-automatic calibrating installation. It mainly comprises five parts: leveling module, the automatic adjustment module of nozzle flow, liquid level picture recognition module, temperature collect module and host computer verification system.

The technical solution of the utility model is: the full-automatic calibrating installation of a kind of fuel charger, comprises the automatic adjustment module of nozzle flow, standard capacity measure, leveling module, liquid level picture recognition module, temperature collect module, embedded ARM processor, host computer verification system; The import of the automatic adjustment module of described nozzle flow is connected with oil inlet pipe; The outlet of the automatic adjustment module of described nozzle flow is connected with the upper end import of described standard capacity measure by flowline; Described embedded ARM processor is connected with the automatic adjustment module of nozzle flow, leveling module, liquid level picture recognition module, temperature collect module, host computer verification system respectively; The automatic adjustment module of described nozzle flow is connected with embedded ARM processor, host computer verification system successively, realizes the automatic control and adjustment to nozzle flow, also can realize and select choosing of large, medium and small range or other fixing ranges; Described leveling module is arranged on described standard capacity measure bottom, described embedded ARM processor people having the same aspiration and interest flat-die piece is connected, communicate by letter and gather the inclination angle value of double-shaft tilt angle sensor by SPI, calculate through PID, send two stepper motor implement device automatic levelings of direction control signal and pulse signal control; Described liquid level picture recognition module comprise be arranged on standard capacity measure upper end neck show liquid pipe and camera; Described embedded ARM processor is connected with camera, gathers oil level image by embedded ARM processor, and carry out gray processing, filtering, binaryzation, rim detection, liquid level by openCV and extract, then through to system calibrating, calculating converts actual liquid level height to; Described temperature collect module comprises temperature sensor in measuring device mouth temperature sensor, measuring device; Described embedded ARM processor changes to gather the temperature value of temperature sensor in measuring device mouth temperature sensor and measuring device by A/D; Described host computer verification system is connected with embedded ARM processor, adopt labview upper computer software, for real-time display standard metal tank top base temperature, and level height, and the data that obtain are saved as to EXCLE original record, calculate final oily actual volume by compensating coefficient, whether automatic decision is qualified, and prints calibration certificate.

Further, described leveling module comprises: double-shaft tilt angle sensor, X-axis stepper motor, X-axis sliding screw, fixed feet, y-axis stepper motor, Y-axis sliding screw; The rotating shaft of X-axis stepper motor and X-axis sliding screw link by rotating disk, and X-axis stepper motor rotational drives X-axis sliding screw to rotate, and moves up and down thereby realize sliding screw; The rotating shaft of y-axis stepper motor and Y-axis sliding screw link by rotating disk, and y-axis stepper motor rotational drives Y-axis sliding screw to rotate, and moves up and down thereby realize sliding screw.

Further, the automatic adjustment module of described nozzle flow comprises: oil gun fixed case, fuel charger oil gun, adjusting trigger gear; Described oil gun fixed case front side is provided with case lid, the reserved oil-feed mouth of pipe of one side of described oil gun fixed case, the described oil-feed mouth of pipe can pass through for described fuel charger oil gun oil pipe, the opposite side of described oil gun fixed case is provided with oil-out, the muzzle of described fuel charger oil gun faces described oil-out, described oil-out connects flowline, and described flowline is provided with triangle electromagnetic valve;

Described adjusting trigger gear is arranged on described oil gun fixed case inside, comprises stepper motor, stepper motor driver, slide plate, connecting rod, stirs device, and the output shaft end cover of described stepper motor has circular slide plate, and output shaft is fixedly connected with described slide plate; One end of described connecting rod is welded in described slide plate circumference one side, described in the other end of described connecting rod connects, stirs device; Described stepper motor drives the connecting rod on slide plate to rotate, and makes to stir the fiddle with oil gun trigger of described fuel charger oil gun of device, realizes the opening and closing of oil gun trigger.

Further, described embedded ARM processor can be sent different pulses to described stepper motor driver, thereby drives fuel charger gun trigger to turn to corresponding range district by two plectrums; Described embedded ARM processor and described triangle electromagnetic valve, for controlling uninterrupted.

Further, described in stir device for two plectrums, described pair of plectrum is welded on described connecting rod, described oil gun trigger is limited between described pair of plectrum, and the described pair of plectrum is perpendicular to the plane at described oil gun trigger place.

Further, described slide plate is circular foil member.

Further, also comprise solenoid control module, after having examined and determine, send signal by host computer verification system and carry out disposable oil extraction by arm processor control magnetic valve and oil drain pump.

Technique effect of the present utility model is: calculate and laboratory calibration by theory, the automatic verification system entirety uncertainty of confirming fuel charger is better than 0.05%, can carry out class of accuracy and be the Measurement Verification Work of 0.3% fuel charger, its structure and the complete realistic need of work of handling simultaneously. This system can, in the calibrating field of fuel charger performance significant role, effectively reduce intensity of workers, increases work efficiency. In addition the beneficial effect that, the utility model also has comprise following some:

1) adopt double-shaft tilt angle sensor to replace drum method, and through stepper motor automatic leveling, replace artificial leveling, save heavy operation.

2) adopt camera collection oil level image, and obtain liquid level through graphics process, adopt temperature sensor collecting temperature, replace and manually reading, and precision is high.

3) upper computer software auto-compensation calculates actual oil product capacity, and compares with fuel charger indicating value, obtains the error of indication of fuel charger, replaces manually and calculating, and the degree of accuracy is high.

4) when detecting oiling machine, fuel charger oil gun is put in oil gun fixed case by the oil-feed mouth of pipe, and the stator in oil gun fixed case clamps fuel charger oil gun, the case lid that closes, fixing fuel charger oil gun; The output shaft end of stepper motor is fixedly connected with slide plate, in slide plate circumference one side, be welded to connect one end of bar, the other end of connecting rod connects two plectrums, stepper motor drives the connecting rod on slide plate to rotate, make the fiddle with oil gun trigger of fuel charger oil gun of two plectrums, realize the opening and closing of oil gun trigger; Fuel charger oil gun trigger is arranged on to oil gun fixed case inside, and by the opening and closing of step motor control oil gun trigger, to replace people to hold fuel charger oil gun, avoids oily volatilization to damage testing person's health.

5) in fuel charger verification process, realize the calibrating to the large, medium and small flow of fuel charger oil gun by arm processor; The LCD interface of arm processor is connected by data wire with touch-screen, and touch-screen is provided with large, medium and small flow switch button, in the time of the large, medium and small flow of calibrating, presses large, medium and small flow button, opens large, medium and small flow; In addition, the GPIO pin of arm processor and triangle electromagnetic valve, by triangle electromagnetic valve control uninterrupted; The GPIO pin of arm processor is connected with stepper motor driver, for control step motor; Carry out adjust flux size by arm processor, do not need manually to pull oil gun trigger and regulate, improved the accuracy of injection flow, greatly improved staff's operating efficiency.

Brief description of the drawings

Fig. 1 is the model schematic diagram of the full-automatic calibrating installation of utility model fuel charger.

In figure: 1. printer, 2.ARM processor, 3. master system, 4. triangle magnetic valve, 5. measuring device mouth temperature sensor, 6. nozzle flow automatic adjusting mechanism, 7. show liquid pipe, 8. camera, 9. temperature sensor in measuring device, 10. standard capacity measure, 11. double-shaft tilt angle sensors, 12. explosion-proof solenoid valves, 13.X shaft step motor, 14.X axle sliding screw, 15. fixed feet, 16.Y shaft step motor, 17.Y axle sliding screw, 18. explosion-proof oil drain pumps.

Fig. 2 is the structure chart of the full-automatic calibrating installation of utility model fuel charger.

In figure: 7. show liquid pipe, 8. camera, 9. temperature sensor, 10. standard capacity measure in measuring device, 12. explosion-proof solenoid valves, 13.X shaft step motor, 14.X axle sliding screw, 15. fixed feet, 16.Y shaft step motor, 17.Y axle sliding screw, 19. oil extraction valves, 20 measuring device oilers.

Fig. 3 is device leveling flow chart.

Fig. 4 is for calling camera image process chart.

Fig. 5 temperature acquisition flow chart.

Fig. 6 nozzle automatic flow rate adjusting device schematic diagram.

In figure: 21. oil gun fixed cases, 22. stepper motors, 23. oil pipe mouths, 24. pairs of plectrums, 25. oil gun triggers, 26. stators, 27 fuel charger oil guns, 28. case lids, 29. triangle electromagnetic valve 30. slide plates, 31 connecting rods.

Fig. 7 oil level gathers camera bellows structural representation.

In figure: 7. show liquid pipe, 8. camera, 41. camera bellows, 42. strip sources.

Fig. 8 is oil level image recognition design sketch; In figure: (a) original liquid level image, (b) gray processing result, (c) result after filtering, (d) edge detection results, (e) liquid level line extracts rear result.

Fig. 9 is position LabVIEW host computer calibrating picture.

Detailed description of the invention

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described.

System architecture as shown in Figure 1-2. The full-automatic calibrating installation of fuel charger based on embedded technology, using ARM9 as the core of controlling, comprising: the automatic adjustment module of nozzle flow, standard capacity measure, leveling module, liquid level picture recognition module, temperature collect module, embedded ARM processor, host computer verification system; The import of the automatic adjustment module of described nozzle flow is connected with oil inlet pipe; The outlet of the automatic adjustment module of described nozzle flow is connected with the upper end import of described standard capacity measure by flowline; Described embedded ARM processor is connected with the automatic adjustment module of nozzle flow, leveling module, liquid level picture recognition module, temperature collect module, host computer verification system respectively; The automatic adjustment module of described nozzle flow is connected with embedded ARM processor, host computer verification system successively, realizes the automatic control and adjustment to nozzle flow, also can realize and select choosing of large, medium and small range or other fixing ranges; Described leveling module is arranged on described standard capacity measure bottom, described embedded ARM processor people having the same aspiration and interest flat-die piece is connected, communicate by letter and gather the inclination angle value of double-shaft tilt angle sensor 11 by SPI, calculate through PID, send two stepper motor implement device automatic levelings of direction control signal and pulse signal control; Described liquid level picture recognition module comprise be arranged on standard capacity measure upper end neck show liquid pipe 7 and camera 8; Described embedded ARM processor is connected with camera 8, gathers oil level image by embedded ARM processor 2, and carry out gray processing, filtering, binaryzation, rim detection, liquid level by openCV and extract, then through system calibrating is calculated and converts actual liquid level height to; Described temperature collect module comprises temperature sensor 9 in measuring device mouth temperature sensor 5, measuring device; Described embedded ARM processor 2 changes to gather the temperature value of temperature sensor 9 in measuring device mouth temperature sensor 5 and measuring device by A/D; Described host computer verification system is connected with embedded ARM processor, adopt labview upper computer software, for real-time display standard metal tank top base temperature, and level height, and the data that obtain are saved as to EXCLE original record, calculate final oily actual volume by compensating coefficient, whether automatic decision is qualified, and prints calibration certificate.

Described leveling module comprises: double-shaft tilt angle sensor 11, X-axis stepper motor 13, X-axis sliding screw 14, fixed feet 15, y-axis stepper motor 16, Y-axis sliding screw 17; The rotating shaft of X-axis stepper motor 13 and X-axis sliding screw 14 link by rotating disk, and X-axis stepper motor 13 rotationals drive X-axis sliding screw 14 to rotate, and move up and down thereby realize sliding screw 14; The rotating shaft of y-axis stepper motor 16 and Y-axis sliding screw 17 link by rotating disk, and y-axis stepper motor 16 rotationals drive Y-axis sliding screw 17 to rotate, and move up and down thereby realize sliding screw 17.

The automatic adjustment module of described nozzle flow comprises: oil gun fixed case 21, fuel charger oil gun 27, adjusting trigger gear; Described oil gun fixed case 21 front sides are provided with case lid 28, the reserved oil-feed mouth of pipe 23 of one side of described oil gun fixed case 21, the described oil-feed mouth of pipe 23 can pass through for described fuel charger oil gun 27 oil pipes, the opposite side of described oil gun fixed case 21 is provided with oil-out, the muzzle of described fuel charger oil gun 27 faces described oil-out, described oil-out connects flowline, and described flowline is provided with triangle electromagnetic valve 29; Described adjusting trigger gear is arranged on described oil gun fixed case 21 inside, comprise stepper motor 22, stepper motor driver, slide plate 30, connecting rod 31, stir device 24, the output shaft end cover of described stepper motor 22 has circular slide plate 30, and output shaft and the fixing welding of described slide plate 30; One end of described connecting rod 31 is welded in described slide plate 30 circumference one sides, described in the other end of described connecting rod 31 connects, stirs device 24; Described stepper motor 22 drives the connecting rod 31 on slide plate 30 to rotate, and makes to stir the fiddle with oil gun trigger 25 of described fuel charger oil gun 27 of device 24, realizes the opening and closing of oil gun trigger 25.

Described embedded ARM processor 2 can be sent different pulses to described stepper motor driver, thereby drives fuel charger gun trigger to turn to corresponding range district by two plectrums; Described embedded ARM processor 2 and described triangle electromagnetic valve 29, for controlling uninterrupted.

What the utility model was preferably implemented stir, and device is two plectrums, and described pair of plectrum is welded on described connecting rod 31, and described oil gun trigger 25 is limited between described pair of plectrum, and the described pair of plectrum is perpendicular to the plane at described oil gun trigger 25 places. Described slide plate 30 is circular foil member. Described pair of plectrum can be one end that two iron plates are welded on connecting rod 31, reserved certain gap between two iron plates, the size in gap can just be held the handle thickness of oil gun trigger, the trigger 25 of fuel charger oil gun 27 is limited between two plectrums, and two plectrum is perpendicular to the plane at oil gun trigger 25 places; The plane parallel at the plane that described connecting rod 31 and described slide plate 30 form and described oil gun trigger 25 places.

1. based on Embedded levelling gear module

As preferred embodiment of the present utility model, this device is placed in two standard capacity measures (20L and 100L) in casing, obliquity sensor is housed on casing, utilize processor gather the inclination angle value of obliquity sensor and carry out PID calculating, send two stepper motor implement device automatic levelings of pulse signal control.

Leveling module in Fig. 1 can be made up of ARM+LINUX flush bonding module, SCA100T double-shaft tilt angle sensor, stepper motor and stepper motor driver, adjustable leading screw form. Wherein, in ARM+LINUX flush bonding module, selecting ARMS3C2440 is control core, and Linux is operating system. ARM+LINUX flush bonding module is communicated by letter and is gathered the inclination angle value (X-axis and Y-axis) of double-shaft tilt angle sensor 11 by SPI, calculates through PID, sends two stepper motor implement device automatic levelings of direction control signal and pulse signal control; Leveling flow process as shown in Figure 3. Leveling step is as follows:

1. use function f d1=open ("/dev/SPI ", O_RDWR) open the double-shaft tilt angle sensor collecting device of SPI communication mode, fd1 is the filec descriptor returning after double-shaft tilt angle sensor collecting device is opened; With function f d1=open ("/dev/GPIO ", O_RDWR) to open IO jaws equipment fd2 be the filec descriptor returning after IO jaws equipment is opened;

2. utilize read (fd1, buffer, 8) function to read the inclination angle value of double-shaft tilt angle sensor (SCA100T obliquity sensor);

3. use if () function to judge whether the inclination angle value of X-axis and Y-axis is (to collect 1024 for horizontal reference value) between 1020-1030 at ± 0.5 °;

If the value X > 1030 4. gathering, so by function iotrl (fd2, GPB5_ON, GPB6) GPB5 pin is set high to position, make left side y-axis stepper motor forward, send the individual pulse of 10* (x-1024) to GPB6 pin, left side y-axis stepper motor rotates the distance of corresponding deviation; If the value X < 1020 gathering, so by function iotrl (fd2, GPB5_OFF, GPB6) GPB5 pin is set low to position, make stepper motor reversion, send the individual pulse of 10* (x-1024) to GPB6 pin, stepper motor rotates the distance of corresponding deviation; If the value Y > 1030 gathering, so by function iotrl (fd2, GPB7_ON, GPB8) GPB7 pin is set high to position, make right side X-axis stepper motor forward, send the individual pulse of 10* (x-1024) to GPB8 pin, stepper motor rotates corresponding distance; If the value Y < 1020 gathering, so by function iotrl (fd2, GPB7_OFF, GPB8) GPB7 pin is set low to position, make right side X-axis stepper motor reversion, send 10* (x-1024) pulse to GPB8 pin, rotate the distance of corresponding deviation; Cycle-index completes levelling function;

5. when gather value 1020 < X < 1030 (± 0.5 °) time, in leveling state, finally use close () functional relationships hull closure, quit a program.

2. based on the automatic adjustment module of Embedded nozzle flow

As shown in Figure 6, described adjusting trigger gear is arranged on oil gun fixed case 21 inside, comprises stepper motor 22, slide plate 30, connecting rod 31, two plectrum 24; The output shaft end cover of stepper motor 22 has slide plate 30, output shaft is fixedly connected with slide plate 30, slide plate 30 circumference one sides are welded with one end of connecting rod 31, the other end of connecting rod 31 is vertically fixedly connected with two plectrums 24, between two plectrums 24, accompany the trigger 25 of fuel charger oil gun 27, and two plectrum 24 is perpendicular to the plane at trigger place; When oiling, nozzle is put in an oil gun fixed case 21, clamp and add fuel charger oil gun 27 by stator 26, case lid 28 closes, in the time that needs are examined and determine large flow, in host computer verification system, click wide range button, arm processor GPIO pin can send 500 pulses to stepper motor driver, stepper motor driver rotates according to umber of pulse Driving Stepping Motor, thereby drives fuel charger gun trigger to turn to wide range district by two plectrums; When in needs calibratings when flow, click the middle range button in host computer, arm processor GPIO pin can send 300 pulses to stepper motor driver, stepper motor driver rotates according to umber of pulse Driving Stepping Motor, thereby drives fuel charger gun trigger to turn to middle range district by two plectrums; In the time that needs are examined and determine low discharge, click the medium and small range of host computer, arm processor GPIO pin can send 100 pulses to stepper motor driver, and stepper motor driver rotates according to umber of pulse Driving Stepping Motor, thereby drives fuel charger gun trigger to turn to small-range district by two plectrums; The division in above-mentioned range district can judge according to the press degree of controlling oil gun trigger, and for example acute pyogenic infection of finger tip oil gun trigger in wide range district is pressed at utmost, other ranges the like.

As embodiment of the present utility model, the automatic adjustment module of nozzle flow being equipped with on device, by stepper motor adjust flux size, in the time of calibrating low discharge, open low discharge, and select little measuring device (20L) by triangle valve, in the time of the large flow of calibrating, open large flow, and select large measuring device (100L) by triangle valve.

3. based on Embedded liquid level picture recognition module

As showing liquid pipe 7 and camera 8, Fig. 7 is enclosed in 41 li, camera bellows, irradiate and show liquid pipe with strip source 42, show in liquid pipe liquid level gauge at thinner glass, due to oil and the suction-operated of glass tube inwall, the liquid level at edge exceeds a bit than middle liquid level, and liquid level totally presents lower concave paraboloid, puts two sources of parallel light on the top of camera bellows, light is penetrated picture concave meniscus meeting refract light from air, and the image that camera is taken has the concave bar of a black at concave meniscus place. Utilization utilizes camera 8 collections to show liquid pipe oil level line image, IMAQ flow chart as shown in Figure 4, utilize open ("/dev/vido0 ") to open camera device file, with ioctl (grab_fd, VIDIOCGBBUF, &grab_cap) function obtains facility information, then use memory-mapped mmap () function, equipment buffering is mapped to memory headroom and uses read_frame (&m_camera, m_image.bits () again) function obtains present frame figure. Obtain in arm processor device 2, the image gathering being processed in real time after liquid level image:

1. image gray processing

Because picture to be detected comprises a large amount of colouring informations, but these information are nonsensical to the identification of image, therefore need it to carry out gray processing to filter out the data irrelevant with identifying information, use formula in openCV:

RGB＝B*0.114+G*0.587+R*0.299(1)

In openCV, with cvCvtColor operator, original image is carried out to gray processing, image 8 (b) is that image is carried out to the result after gray processing.

2. image filtering

Image is subject to the impact of various environmental disturbances, there will be noise in display frame, and the negative effect bringing in order to reduce noise just need to be used noise filter to view data processing. In Fig. 8 (b) image, contain various interfere informations, system adopts the method for gaussian filtering to be removed. Gaussian filter is the linear smoothing wave filter of selecting weights according to the shape of Gaussian function, and Gaussian filter has good effect to the noise of removing Normal Distribution. Concerning image, the conventional discrete Gaussian function of two-dimentional zero-mean makees smoothing filter, and function expression is as follows:

$g\&lsqb;i,j\&rsqb;=e^{-(i^2-j^2)/2{\&part;}^2}---\left(2\right)$

In openCV, call cvSmooth operator and carry out gaussian filtering. Its result is as shown in Fig. 8 (c), and Gaussian filter is very effective for the noise that suppresses Normal Distribution.

3. rim detection

The edge of image refers to the part that image local area brightness is changed significantly, and the gray scale section in this region generally can be regarded as a step. Rim detection is mainly tolerance, detection and the location of the grey scale change of image. Article adopts the detection that realizes liquid level of the Canny algorithm in openCV. Canny edge detection algorithm concrete steps are as follows:

(1) image smoothing: come image filtering with Gaussian filter, remove the noise in image;

(2) ask gradient computing: utilize derivative operator to obtain the gradient spoke value of each pixel | G| and direction e, obtain intensity and the direction thereof at edge:

$\left|G\right|={\&lsqb;{\left(\frac{\&part;f}{\&part;x}\right)}^2+{\left(\right(\frac{\&part;f}{\&part;y}\left)\right)}^2\&rsqb;}^{\frac{1}{2}}---\left(3\right)$

$\mathrm{\&theta;}={\tan }^{-1}\&lsqb;\frac{\&part;f}{\&part;x}/\frac{\&part;f}{\&part;y}\&rsqb;---\left(4\right)$

F is filtered image.

(3) gradient is carried out to non-maximum inhibition;

(4) use dual threshold method to all marginal point processing after non-maximum suppresses;

(5) edge connects.

Its image after treatment is as shown in Fig. 8 (d).

4. calculate the pixels tall of liquid level

First find out upper and lower two calibration point coordinates and liquid level concave meniscus focus point coordinate (being concave meniscus minimum point), lower calibration point shows liquid pipe liquid level pixels tall exactly to the difference of concave meniscus coordinate points Y-axis pixel value. The liquid level and the reference point figure that in Fig. 8 (d), extract are not regular figures, find out the barycentric coodinates point of irregular figure, first calculate the square of liquid level and reference point irregular figure, utilize the square in the shared region of target as shape description parameter. Square can be for the region description of two-value or gray level. For discrete intensity image x (i, j), p+q rank moment of the orign is defined as

$m_{pq}=\underset{i}{\&Sigma;}\underset{j}{\&Sigma;}{i}^p{j}^{q}x(i,j)---\left(5\right)$

Wherein i, j, p, q is the coordinate (pixel coordinate in digital picture) of region point. Make X_C，Y_CRepresent the coordinate of regional barycenter:

X_C＝M₁₀/M₀₀(6)

Y_C＝M₀₁/M₀₀(7)

The in the situation that of bianry image, M₀₀Represent the area in region.

In OpenCV, can calculate very easily the feature square of polygonal region, can calculate with letter cvMoments operator the square information of bianry image. Image is obtained the image of barycentric coodinates point and corresponding Y-axis coordinate line as shown in Fig. 8 (e) after processing.

Finally by crossing, camera calibration is calculated and converts actual liquid level height to.

4. based on Embedded temperature collect module

Oil temperature needs twice collection, oil temperature collection in oil temperature (oil temperature of gas station's oil storage tank) collection and the measuring device of oiling muzzle, adopt respectively temperature sensor 9 in measuring device mouth temperature sensor 5 and measuring device, be PT100 temperature sensor, precision ± 0.2 DEG C, specifically gathers as shown in flow chart 5. utilize open ("/dev/ADC "), open ADC device file, then use read (fd, buffer, sizeofbuffer-1) function to read temperature value. On above-mentioned each measuring device, all fill camera and temperature sensor, when calibrating, controller sends to host computer by oil product liquid level, the temperature of collection by serial ports.

5. the host computer verification system based on LabVIEW

As shown in Figure 9, device adopts LabVIEW as host computer, communicate by letter with slave computer ARM by serial ports, show in real time measuring device top base temperature, and level height, and the data that obtain are saved as to EXCLE original record, calculate final oily actual volume by compensating coefficient, whether automatic decision is qualified, and prints calibration certificate.

As an embodiment of the present utility model, two kinds of standard capacity measures for checking in Fig. 9, are set, one is 100L, one is 20L, when pressing on host computer picture after corresponding measuring device threshold switch (100L, 20L or other ranges), the automatic adjustment module of nozzle flow can realize the opening and closing of oil gun trigger 25, exports corresponding range for calibrating.

In addition, the utility model is also provided with explosion-proof solenoid valve control module, sends signal carry out disposable oil extraction by arm processor control magnetic valve and oil drain pump after having examined and determine by host computer. Nozzle of every calibrating needs three times (large, medium and small range) calibrating, if to be all discharged to gas station's fuel tank cumbersome by anti-oil at every turn, therefore on device, fuel reserve tank and explosion-proof solenoid valve 12 and explosion-proof oil drain pump 18 are installed, click oil extraction button at host computer and control explosion-proof solenoid valve 12 by ARM and first oil is discharged in fuel reserve tank when just having examined and determine once, after a nozzle calibrating completes for three times, host computer is clicked oil drain pump control button, control explosion-proof bat oil pump by ARM, be discharged in gas station's fuel reserve tank anti-the oil of fuel reserve tank.

To sum up, the utility model discloses the full-automatic calibrating installation of fuel charger and leveling, liquid level image-recognizing method. This device utilizes embedded technology and sensor technology, realize fuel charger calibrating installation automatic leveling, automatic switchover size criteria measuring device, automatically regulate the uninterrupted of nozzle; Automatically read oil product liquid level, temperature by camera and temperature sensor, and serial ports sends to host computer verification system, in host computer, compensation calculates actual oil product capacity, and compares with fuel charger indicating value, obtains the error of indication of fuel charger; Realize fuel charger little, in, the large disposable calibrating of flow, after having examined and determine, send signal by host computer and carry out disposable oil extraction by arm processor control magnetic valve and oil drain pump, finally preserve original record and print probation redport.

In the description of this description, the description of reference term " embodiment ", " some embodiment ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description. In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example. And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.

Although illustrated and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: in the situation that not departing from principle of the present utility model and aim, can carry out multiple variation, amendment, replacement and modification to these embodiment, scope of the present utility model is limited by claim and equivalent thereof.

Claims (7)

1. the full-automatic calibrating installation of fuel charger, is characterized in that: comprise the automatic adjustment module of nozzle flow, standard capacity measure, leveling module, liquid level picture recognition module, temperature collect module, embedded ARM processor, host computer verification system; The import of the automatic adjustment module of described nozzle flow is connected with oil inlet pipe; The outlet of the automatic adjustment module of described nozzle flow is connected with the upper end import of described standard capacity measure by flowline; Described embedded ARM processor is connected with the automatic adjustment module of nozzle flow, leveling module, liquid level picture recognition module, temperature collect module, host computer verification system respectively;

The automatic adjustment module of described nozzle flow is connected with embedded ARM processor, host computer verification system successively, realizes the automatic control and adjustment to nozzle flow, also can realize and select choosing of large, medium and small range or other fixing ranges;

Described leveling module is arranged on described standard capacity measure bottom, described embedded ARM processor people having the same aspiration and interest flat-die piece is connected, communicate by letter and gather the inclination angle value of double-shaft tilt angle sensor (11) by SPI, calculate through PID, send two stepper motor implement device automatic levelings of direction control signal and pulse signal control;

Described liquid level picture recognition module comprise be arranged on standard capacity measure upper end neck show liquid pipe (7) and camera (8); The same camera of described embedded ARM processor (8) is connected, gather oil level image by embedded ARM processor (2), carry out gray processing, filtering, binaryzation, rim detection, liquid level by openCV and extract, then through system calibrating is calculated and converts actual liquid level height to;

Described temperature collect module comprises temperature sensor (9) in measuring device mouth temperature sensor (5), measuring device; Described embedded ARM processor (2) changes to gather the temperature value of temperature sensor (9) in measuring device mouth temperature sensor (5) and measuring device by A/D;

Described host computer verification system is connected with embedded ARM processor, adopt labview upper computer software, for real-time display standard metal tank top base temperature, and level height, and the data that obtain are saved as to EXCLE original record, calculate final oily actual volume by compensating coefficient, whether automatic decision is qualified, and prints calibration certificate.

2. the full-automatic calibrating installation of a kind of fuel charger according to claim 1, it is characterized in that: described leveling module comprises: double-shaft tilt angle sensor (11), X-axis stepper motor (13), X-axis sliding screw (14), fixed feet (15), y-axis stepper motor (16), Y-axis sliding screw (17); The rotating shaft of X-axis stepper motor (13) and X-axis sliding screw (14) link by rotating disk, X-axis stepper motor (13) rotational drives X-axis sliding screw (14) to rotate, and moves up and down thereby realize sliding screw (14); The rotating shaft of y-axis stepper motor (16) and Y-axis sliding screw (17) link by rotating disk, y-axis stepper motor (16) rotational drives Y-axis sliding screw (17) to rotate, and moves up and down thereby realize sliding screw (17).

3. the full-automatic calibrating installation of a kind of fuel charger according to claim 1, is characterized in that: the automatic adjustment module of described nozzle flow comprises: oil gun fixed case (21), fuel charger oil gun (27), adjusting trigger gear; Described oil gun fixed case (21) front side is provided with case lid (28), the reserved oil-feed mouth of pipe (23) of one side of described oil gun fixed case (21), the described oil-feed mouth of pipe (23) can pass through for described fuel charger oil gun (27) oil pipe, the opposite side of described oil gun fixed case (21) is provided with oil-out, the muzzle of described fuel charger oil gun (27) faces described oil-out, described oil-out connects flowline, and described flowline is provided with triangle electromagnetic valve (29);

Described adjusting trigger gear is arranged on described oil gun fixed case (21) inside, comprise stepper motor (22), stepper motor driver, slide plate (30), connecting rod (31), stir device (24), the output shaft end cover of described stepper motor (22) has circular slide plate (30), and output shaft is fixedly connected with described slide plate (30); One end of described connecting rod (31) is welded in described slide plate (30) circumference one side, described in the other end of described connecting rod (31) connects, stirs device (24); Described stepper motor (22) drives the connecting rod (31) on slide plate (30) to rotate, make to stir the fiddle with oil gun trigger (25) of described fuel charger oil gun (27) of device (24), realize the opening and closing of oil gun trigger (25).

4. the full-automatic calibrating installation of a kind of fuel charger according to claim 3, it is characterized in that: described embedded ARM processor (2) can be sent different pulses to described stepper motor driver, thereby drive fuel charger gun trigger to turn to corresponding range district by two plectrums; Described embedded ARM processor (2) and described triangle electromagnetic valve (29), for controlling uninterrupted.

5. the full-automatic calibrating installation of a kind of fuel charger according to claim 3, it is characterized in that: described in stir device (24) for two plectrums, described pair of plectrum is welded on described connecting rod (31), described oil gun trigger (25) is limited between described pair of plectrum, and the described pair of plectrum is perpendicular to the plane at described oil gun trigger (25) place.

6. the full-automatic calibrating installation of a kind of fuel charger according to claim 3, is characterized in that: described slide plate (30) is circular foil member.

7. the full-automatic calibrating installation of a kind of fuel charger according to claim 1, it is characterized in that: also comprise solenoid control module, after having examined and determine, send signal by host computer verification system and carry out disposable oil extraction by arm processor control magnetic valve (12) and oil drain pump (18).