CN202117823U - Oil mass detecting device of oil pump testing board - Google Patents
Oil mass detecting device of oil pump testing board Download PDFInfo
- Publication number
- CN202117823U CN202117823U CN201120221902XU CN201120221902U CN202117823U CN 202117823 U CN202117823 U CN 202117823U CN 201120221902X U CN201120221902X U CN 201120221902XU CN 201120221902 U CN201120221902 U CN 201120221902U CN 202117823 U CN202117823 U CN 202117823U
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- oil
- oil pump
- vidicon camera
- camera
- measuring cylinder
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Abstract
The utility model discloses an oil mass detecting device of an oil pump testing board, which comprises a glass measuring cylinder, a fixed support, a camera, a rotation speed sensor, a processing circuit module and a PC (personal computer). The glass measuring cylinder is perpendicularly arranged on the fixed support, an upper-end opening of the glass measuring cylinder is opposite to an outlet of a corresponding oil ejector on an oil pump to be tested, the rotation speed sensor is arranged on a drive shaft of the oil pump to be tested, the camera faces the glass measuring cylinder, and the rotation speed sensor, the processing circuit module and the camera are all connected with the PC. The camera is used for shooting the glass measuring cylinder, the PC processes images and computes volumes of fuel, ejected into the glass measuring cylinder, in the cylinders of the oil pump, and thereby real-time noncontact detection of oil ejection quantities of the cylinders of the oil pump is achieved, and the oil mass detecting device can be calibrated on line. The oil mass detection device has no any additional affection on an original oil pump testing board, requires no modification of the testing board, can be conveniently mounted on a measuring system, and has no affection on reading by a user.
Description
Technical field
The utility model relates to the oil mass detection technique of oil pump test platform, more particularly, relates to a kind of oil mass detection device of the oil pump test platform based on image processing.
Background technique
The oil pump test platform is the special device that oil pump dispatches from the factory debugging and calibrates, and for the detection of each cylinder fuel injection quantity of oil pump, is important trace routine in the Injection Pump assembling line.Each cylinder fuel injection quantity is that accuracy is directly relevant with power performance, oil consumption and the exhaust emissions quality etc. of diesel engine with conformity.Through the revolution of motor drives Injection Pump, drive each cylinder working of Injection Pump, detect the fuel injection quantity of each cylinder unit's number of times simultaneously.
At present, oil measurement mainly adopts following method: 1. cylinder type is measured: the fuel oil that Injection Pump ejects, flow into glass cylinder, and the fuel oil volume that flows into glass cylinder is read in manual work.The main deficiency of this method of measurement is: glass cylinder intermediate fuel oil volume is read in manual work, and error is big and measuring accuracy is low; Automaticity is low, influences the manufacturing efficiency of manufacturer, and can not realize that digitizing measures automatically.2. Weighing type is measured: the fuel oil that Injection Pump ejects, flow in the container that weighing sensor is installed, and according to its proportion, calculate the volume of container intermediate fuel oil.The main deficiency of this method of measurement is: need convert according to the proportion of fuel oil, be a kind of indirect measurement method; Installation requirement to weighing sensor is relatively stricter, and weighing sensor need regularly be calibrated.3. positive displacement is measured: the fuel oil that Injection Pump ejects, flow into the long-pending airtight oil cylinder of uniform section, and promote piston and move, through the displacement of sensor piston, calculate the volume of fuel oil.The main deficiency of this method of measurement is: to the sealing requirements of oil cylinder and displacement transducer performance than higher; And need be according to the size of oil pump capacity, customization oil mass piston, sensor need regularly be calibrated.
The model utility content
Measure the employing manual work to the cylinder type that exists in the existing technology and read glass cylinder intermediate fuel oil volume; Cause the big and low problem of measuring accuracy of error; The purpose of the utility model provides a kind of oil mass detection device of oil pump test platform; Can automatically detect, and can show and store detecting data to each cylinder fuel injection quantity.
For realizing above-mentioned purpose, the technological scheme that the utility model adopts is following:
A kind of oil mass detection device of oil pump test platform; Comprise glass cylinder, fixed support, vidicon camera, speed probe and processing circuit module, PC; Said glass cylinder is vertical on the fixed support, and corresponding oil sprayer outlet relatively on the open upper end of glass cylinder and the oil pump to be measured; Said speed probe is located on the live axle of oil pump to be measured; Said vidicon camera and said glass cylinder over against; Said speed probe and processing circuit module all are connected with PC with vidicon camera.
Said fixed support both sides are provided with the support switching mechanism, and said support switching mechanism and fixed support flexibly connect.
Said vidicon camera below is provided with the orientation and regulates support, and said orientation is regulated support and is connected fixing with vidicon camera.
Said speed probe and processing circuit module are connected with PC through USB interface with vidicon camera.
Said vidicon camera is the industrial CCD vidicon camera.
Compared with prior art, adopt the oil mass detection device of a kind of oil pump test platform of the utility model, through motoring oil pump work to be measured, the fuel oil that the oil sprayer on the oil pump ejects flows into glass cylinder behind the fog dispersal device; Speed probe output signal on the oil pump shaft carries out signal processing through processing circuit; Input to PC and carry out the counting of oil spout number of times; After reaching predefined oil spout number of times; Trigger the image that vidicon camera obtains each glass cylinder simultaneously, for example to the fuel injection system of 6 cylinders or 4 cylinders, the quantity that glass cylinder is corresponding is respectively 6 or 4.Vidicon camera is sent to PC with the image of glass cylinder; Image to glass cylinder carries out processing such as image sharpening; With form is that the image file of BMP, JPEG, PCX, TIFF or GIF etc. converts numerical value (gray value) data into; Through edge of image gray value decision algorithm and corresponding reference coordinate, can obtain the liquid level height of glass cylinder intermediate fuel oil, thereby calculate the fuel quantity in each measuring cup.
The oil mass detection device of the utility model also has following beneficial effect:
1) realized non-contact detecting: adopt vidicon camera that glass cylinder is made a video recording; Image processing through PC calculates each cylinder of oil pump and sprays into the fuel oil volume in the glass cylinder; Realized the real-time non-contact detecting of each cylinder fuel injection quantity of oil pump, and the oil mass detection device can on-line calibration.
2) have the characteristics real-time that detect: once can accomplish the detection of oil mass in whole 6 or 4 glass cylinders; And measure reading of final data from starting IMAQ; Time is no more than 0.5 second; Improved the oil pump debugging efficiency greatly, and the artificial time of reading 6 measuring cups at the soonest will be nearly 10 seconds in the existing technology.
3) testing precision is high, and error is little: resolution reaches 0.1ml, and can eliminate the personal error of artificial reading.
4) the oil mass detection device of the utility model has no added influence to the crude oil pump test stand, need not carry out any transformation to test stand, and this measuring system can be installed easily, and does not influence artificial reading.
In sum, the oil mass detection device of the utility model has not only been realized the Real-time and Dynamic Detection of Injection Pump fuel injection quantity, but also can detect the fuel injection quantity of each cylinder of oil pump fast and accurately, has the testing precision height, and error is little, characteristics such as convenient installation.
Description of drawings
Fig. 1 is the structural representation of oil mass detection device of a kind of oil pump test platform of the utility model.
Embodiment
Further specify the technological scheme of the utility model below in conjunction with accompanying drawing and embodiment.
Embodiment
See also shown in Figure 1: the oil mass detection device of a kind of oil pump test platform that the utility model provides; Comprise: glass cylinder 8, fixed support 2, industrial CCD vidicon camera 5, speed probe and processing circuit module 9 and PC 3; Glass cylinder 8 is vertical on the fixed support 2, and corresponding oil sprayer 1 outlet relatively on the open upper end of glass cylinder 8 and the oil pump to be measured; Speed probe is located on the live axle of oil pump to be measured; Industrial CCD vidicon camera 5 and glass cylinder 8 over against.PC 3 is connected with speed probe and processing circuit module 9, industrial CCD vidicon camera 5 respectively, and wherein, PC 3 is connected with industrial CCD vidicon camera 5 through usb data communication cable 4.Fixed support 2 both sides are provided with support switching mechanism 7, and support switching mechanism 7 flexibly connects with fixed support 2.Industrial CCD vidicon camera 5 belows are provided with the orientation and regulate support 6, and the orientation is regulated support 6 and is connected fixing with industrial CCD vidicon camera 5.
During use, according to the actual conditions of oil pump test platform, particularly the size of glass cylinder 8 and fixed support 2 is confirmed the clear imaging scope that photographs glass cylinder 8 of industrial CCD vidicon camera 5 abilities, confirms the physical dimension of orientation adjusting support 6.Need to prove at this, the orientation regulate support 6 can realize industrial CCD vidicon camera 5 in the horizontal direction with the Vertical direction fine setting, make the imaging of glass cylinder 8 clear.Then, the level of adjustment industrial CCD vidicon camera 5 and the position of Vertical direction make the imaging of glass cylinder 8 clear.Then, speed probe and processing circuit module 9 are installed on the oil pump live axle.Can carry out proper functioning at installation application software on the PC that image processing function is arranged 3 and after calibrating.Wherein, After calibration refers to the fuel quantity of standard is inserted glass cylinder 8; By industrial CCD vidicon camera 5 image of this glass cylinder is sent to PC 3; The image of the glass cylinder that fills the regular fuel oil mass is handled the back obtains liquid level height at regular fuel oil mass state subglass graduated cylinder intermediate fuel oil, with this liquid level height as a calibrated altitude.And being passed through the liquid level height and the calibrated altitude that calculate after PC 3 is handled, compares the fuel quantity by corresponding oil sprayer 1 ejection of each cylinder on the oil pump to be measured that glass cylinder 8 is collected; Just can know outage between the two, finally confirm the fuel injection quantity of each cylinder unit's number of times of oil pump to be measured.
Those of ordinary skill in the art will be appreciated that; Above embodiment only is the purpose that is used for explaining the utility model; And be not with the qualification of doing the utility model; As long as in the essential scope of the utility model, in the scope to the above embodiment's variation, claim that modification all will drop on the utility model.
Claims (5)
1. the oil mass detection device of an oil pump test platform; It is characterized in that: comprise glass cylinder, fixed support, vidicon camera, speed probe and processing circuit module, PC; Said glass cylinder is vertical on the fixed support, and corresponding oil sprayer outlet relatively on the open upper end of glass cylinder and the oil pump to be measured; Said speed probe is located on the live axle of oil pump to be measured; Said vidicon camera and said glass cylinder over against; Said speed probe and processing circuit module all are connected with PC with vidicon camera.
2. the oil mass detection device of oil pump test platform according to claim 1 is characterized in that: said fixed support both sides are provided with the support switching mechanism, and said support switching mechanism and fixed support flexibly connect.
3. the oil mass detection device of oil pump test platform according to claim 1 is characterized in that: said vidicon camera below is provided with the orientation and regulates support, and said orientation is regulated support and is connected fixing with vidicon camera.
4. the oil mass detection device of oil pump test platform according to claim 1 is characterized in that: said speed probe and processing circuit module are connected with PC through USB interface with vidicon camera.
5. the oil mass detection device of oil pump test platform according to claim 1 is characterized in that: said vidicon camera is the industrial CCD vidicon camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120221902XU CN202117823U (en) | 2011-06-28 | 2011-06-28 | Oil mass detecting device of oil pump testing board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120221902XU CN202117823U (en) | 2011-06-28 | 2011-06-28 | Oil mass detecting device of oil pump testing board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202117823U true CN202117823U (en) | 2012-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120221902XU Expired - Fee Related CN202117823U (en) | 2011-06-28 | 2011-06-28 | Oil mass detecting device of oil pump testing board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202117823U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322380A (en) * | 2011-06-28 | 2012-01-18 | 上海工程技术大学 | Oil quantity detection system |
| CN104121128A (en) * | 2014-08-14 | 2014-10-29 | 浙江鑫业电子科技有限公司 | Testbed for fuel injection pump |
| CN105756834A (en) * | 2015-12-15 | 2016-07-13 | 江南大学 | RANSAC-based direct injection engine single fuel injection amount liquid level height visual detection method |
| CN105756835A (en) * | 2015-12-15 | 2016-07-13 | 江南大学 | Visual measurement and correction method for liquid level height of single-time fuel injection quantity of direct injection engine |
-
2011
- 2011-06-28 CN CN201120221902XU patent/CN202117823U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322380A (en) * | 2011-06-28 | 2012-01-18 | 上海工程技术大学 | Oil quantity detection system |
| CN104121128A (en) * | 2014-08-14 | 2014-10-29 | 浙江鑫业电子科技有限公司 | Testbed for fuel injection pump |
| CN105756834A (en) * | 2015-12-15 | 2016-07-13 | 江南大学 | RANSAC-based direct injection engine single fuel injection amount liquid level height visual detection method |
| CN105756835A (en) * | 2015-12-15 | 2016-07-13 | 江南大学 | Visual measurement and correction method for liquid level height of single-time fuel injection quantity of direct injection engine |
| CN105756834B (en) * | 2015-12-15 | 2018-11-09 | 江南大学 | RANSAC-based direct injection engine single fuel injection amount liquid level height visual detection method |
| CN105756835B (en) * | 2015-12-15 | 2019-02-22 | 江南大学 | Direct fuel-injection engine single distributive value liquid level vision measurement modification method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120118 Termination date: 20140628 |
|
| EXPY | Termination of patent right or utility model |