CN201955448U - Dynamic parameter test system of high speed solenoid valve for knitting machine - Google Patents
Dynamic parameter test system of high speed solenoid valve for knitting machine Download PDFInfo
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Abstract
The utility model discloses a dynamic parameter test system of a high speed solenoid valve for a knitting machine. The dynamic parameter test system comprises a test desk (1), a test control circuit board (2), an upper computer (3) and an external power supply module (4), wherein the upper computer (3) comprises a data acquisition card used for realizing communication with the test control circuit board (2) and accomplishing the measurement of the voltage signal to be tested output by the test control circuit board (2) and an image acquisition card used for synchronously acquiring and storing the output data of a high speed line scanning camera (5) and having the function of synchronous triggering a measurement interface circuit board (12). A non-contact measurement method based on the machine vision and a design method for a virtual device are used for the system, and a general-purpose computer, the data acquisition card and a self-developed hardware test platform are used to accurately measure the dynamic response time of the solenoid valve, so that the necessary test data is provided for the design and detection of the solenoid valves.
Description
Technical Field
The utility model relates to a solenoid valve dynamic parameter test system, especially a knitting machinery is with high-speed solenoid valve dynamic parameter test system.
Background
The knitting machine is the necessary production equipment for producing knitted fabrics, woollen sweater and other knitted garments, in recent years, with the increasing demand of the international and domestic markets for knitted fabrics and garments, the production of domestic knitting machine manufacturing industry, especially computerized flat knitting machines, is rapidly developed, but at present, the high-performance knitting machine still mainly depends on import. Meanwhile, the comprehensive and systematic research and development of key other parts of the knitting machine are lacked at present in China, and the improvement of the whole performance of the knitting machine is limited to a certain extent.
The electromagnetic valve is widely used in knitting machinery, has multiple types and large consumption, is a key part which directly influences the performance of the whole knitting machinery, particularly the dynamic response time and the working reliability of the high-speed electromagnetic valve determine the knitting speed and the stability of the whole knitting machinery, the dynamic response time of the electromagnetic valve refers to the time required by the electromagnetic valve to be electrified until an electromagnetic valve action part (a valve core or a mechanical part linked with the valve core) acts in place, the parameter directly reflects the performance of the electromagnetic valve and directly determines the maximum knitting speed of the knitting machinery, and therefore high requirements are put forward on the production and the detection of the high-speed electromagnetic valve for the knitting machinery.
At present, enterprises for producing high-speed electromagnetic valves for knitting machines have relatively lagged detection means, can only complete detection of partial electromagnetic parameters of the electromagnetic valves mostly, and cannot detect dynamic response performance of products at present. Meanwhile, the existing electromagnetic valve dynamic parameter detection equipment at home and abroad mainly aims at electromagnetic valves for automobiles, electromagnetic valves for hydraulic control systems and the like, and special equipment for high-speed electromagnetic valve dynamic parameters for knitting machinery is not available in the market at present.
The existing electromagnetic valve parameter detection equipment for knitting machinery in China mainly detects electromagnetic parameters of an electromagnetic valve, such as cold direct current resistance of a coil of the electromagnetic valve, cold insulation resistance between the coil and an iron core, direct current excitation voltage and direct current excitation current of the electromagnetic valve, magnetic induction intensity at a fixed distance and the like, and time parameters of dynamic processes of attraction, release and the like of the electromagnetic valve cannot be accurately measured and current and voltage parameters cannot be mapped in real time.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a can test knitting machinery is with high-speed solenoid valve dynamic parameter's system is provided, its dynamic response time (containing action time and release time) that can multiple knitting machinery solenoid valve of accurate measurement, excitation winding direct current resistance, excitation winding static inductance, action voltage, release voltage, actuation current and winding temperature isoparametric to design and inspection for the solenoid valve product provide necessary test data.
In order to solve the technical problem, the utility model discloses a high-speed solenoid valve dynamic parameter test system for knitting machinery includes:
-a test bench configured with a high-speed linear array camera coaxial with a valve element of the solenoid valve to be tested and a light source, the solenoid valve to be tested being configured between the high-speed linear array camera and the light source;
-a measurement and control circuit board comprising:
(1) the control circuit board comprises a parallel data interface and an analog quantity measuring interface which are used for communicating with an upper computer;
(2) the measurement interface circuit board comprises a relay array and a drive circuit thereof, wherein the relay array connects the electromagnetic valve to be measured to the electromagnetic valve drive circuit board or the electrical parameter measurement circuit board according to the control signal;
(3) the electromagnetic valve driving circuit board is used for providing an electromagnetic valve driving circuit during dynamic response characteristic test;
(4) the electrical parameter measuring circuit board is used for providing a circuit and an interface for measuring each parameter of the electromagnetic valve;
the upper computer is a high-performance computer and comprises a data acquisition card and an image acquisition card, wherein the data acquisition card is used for realizing communication with the measurement and control circuit board and measuring a voltage signal to be measured output by the measurement and control circuit board, and the image acquisition card is used for synchronously acquiring and storing output data of the high-speed line scanning camera and has a function of synchronously triggering the measurement interface circuit board;
the external power supply module comprises a measurement and control circuit board and a power supply for testing the electromagnetic valve to be tested.
In order to realize the drive control of the electromagnetic valve and generate a synchronous signal for measuring the dynamic response time and ensure the accuracy of measuring the dynamic response time, the control circuit board is an FPGA control circuit board.
The high-speed linear array camera, the electromagnetic valve to be tested and the light source which are arranged on the test board are movably arranged on the guide rail, in order to enable the test light source to become a uniform surface light source, a collimating mirror and frosted glass are further arranged between the electromagnetic valve to be tested and the light source, and the collimating mirror is located beside the light source.
The system adopts a non-contact measuring method based on machine vision and a design method of a virtual instrument, uses a general computer and a data acquisition card and combines a self-developed hardware test platform to accurately measure the dynamic response time of the electromagnetic valve, and provides necessary test data for the design and the inspection of electromagnetic valve products.
The utility model discloses the advantage of system lies in:
(1) a high-performance general microcomputer (PC) is used as a main control computer, a Spartan3 series FPGA is used as a lower control computer, and a self-designed test platform and a measurement and control circuit board are configured to form an electromagnetic valve parameter detection system;
(2) the dynamic response time of the electromagnetic valve to be tested under the specified driving condition can be accurately measured, and the driving condition can be set randomly within the specified range;
(3) parameters such as direct current resistance of an excitation winding of the electromagnetic valve to be measured, static inductance of the excitation winding, action voltage, release voltage, pull-in current, winding temperature and the like can be measured;
(4) the method can be suitable for detection of various electromagnetic valves;
(5) the detection result is visually displayed in a data report and curve mode, so that a user can conveniently analyze and research;
(6) all the measured data can be rapidly and reliably stored in a system database, and later-stage query and analysis can be performed;
(7) the system software and hardware are reliable in operation and convenient to use.
Drawings
Fig. 1 is a block diagram of the testing system of the present invention.
Fig. 2 is a structural block diagram of the measurement and control circuit board.
FIG. 3 is a line scan of reed movement.
FIG. 4 is a diagram of the processed reed motion trajectory.
Fig. 5 is a solenoid valve driving circuit.
Fig. 6 is a cold state dc resistance measurement schematic diagram.
Fig. 7 is a schematic diagram of coil equivalent inductance measurement.
FIG. 8 is a schematic block diagram of pull-in/pull-out voltage measurement.
FIG. 9 is a schematic diagram of pull-in current measurement.
Detailed Description
As shown in fig. 1 and 2, the testing system of the present invention comprises four parts: testboard 1, observe and control circuit board 2, host computer 3 and external power module 4.
The main body of the test board 1 is an optical bench, and a movable clamping mechanism is configured for fixing related equipment such as a high-speed linear array camera 5, an electromagnetic valve 6 to be tested, a light source 7 and the like. The high-speed linear array camera 5 is coaxial with the valve core of the electromagnetic valve 6 to be tested and the light source 7, and the camera 5 captures an action image of the valve core of the electromagnetic valve 6 to be tested for analysis and use by an upper computer. The test board 1 provides a measurement wiring terminal to connect the electromagnetic valve 6 to be measured with the measurement and control circuit board 2.
The measurement and control circuit board 2 takes the FPGA as a control core, comprises an interface circuit, a driving circuit and a parameter measuring circuit which are required by measurement, and can realize the electrical access and parameter measuring functions of the electromagnetic valve 6 to be measured under the control of the upper computer 3.
The upper computer 3 is a high-performance computer and is provided with an NIPCI 6221 data acquisition card and a Matrox Solios XCL-B image acquisition card. The NI PCI6221 data acquisition card is provided with 24 paths of digital I/O channels, 8 paths of differential analog quantity input channels and 2 paths of analog quantity output channels, is used for realizing a communication interface between the upper computer 3 and the measurement and control circuit board 2 and completing the measurement function of a voltage signal to be measured output by the measurement and control circuit board 2. The Matrox Solios XCL-B image acquisition card has the sampling rate of 85MHz, the image cache of 65MB, and the synchronous trigger function with complete functions, and is used for synchronously acquiring and storing the output data of the high-speed line scanning camera 5.
And the external power supply module 4 is used for providing a test power supply for the measurement and control circuit board 2 and the electromagnetic valve 6 to be tested. The power supply used by the test system consists of three parts:
1. the LDC60F-1 has +5V and +/-12V output and rated power of 60W and provides working voltage for the measurement and control circuit board 2;
2. LDA150W-3, single path 30V, rated power 150W, provides driving voltage for the dynamic characteristic test of the electromagnetic valve 6;
3. GW PSS-3203, single circuit 0-32V is adjustable, rated power is 96W, and driving voltage is provided for parameter testing of the electromagnetic valve 6.
The measurement and control circuit board 2 consists of four parts:
1. the control circuit board 11 is an FPGA control circuit board, and comprises a Spartan3 XC3S400FPGA, and is connected with the PCI-6221 through a custom parallel data interface, so as to realize communication between the FPGA and the upper computer 3 and provide an analog quantity measurement interface.
2. Measurement interface circuit board 12: the electromagnetic valve to be tested 6 is connected to an electromagnetic valve driving circuit board 13 or an electrical parameter measuring circuit board 14 according to a control signal.
3. The electromagnetic valve drive circuit board 13: the drive circuit of the solenoid valve 6 is mainly provided for dynamic response characteristic test.
4. Electrical parameter measurement circuit board 14: and the circuit and the interface for measuring parameters such as the direct-current resistance of the exciting winding of the electromagnetic valve, the static inductance of the exciting winding of the electromagnetic valve, the pull-in voltage of the electromagnetic valve, the release voltage of the electromagnetic valve, the pull-in current of the winding of the electromagnetic valve and the like are provided.
The FPGA control circuit board and the upper computer 3 communicate in a parallel mode through a PCI6221 data acquisition card, a communication bus adopts a self-defined interface, a 16-bit data bus, a 6-bit address bus and 1-bit read-write direction control are used, and 1 bit is a data clock. The PCI6221 acquisition card data bus pins are specifically defined as shown in Table 1:
TABLE 1PCI6221 acquisition card data bus pin specific definition
The communication between the FPGA control circuit board and the upper computer 3 adopts a custom communication protocol, which comprises 6 types and 48 control words, and the specific content of the communication protocol is shown in table 2:
TABLE 2 communication protocol
Dynamic response characteristic measurement:
after the attracting voltage is applied to the coil of the electromagnetic valve 6, the reed cannot be attracted immediately due to the electromagnetic inertia (from the transition process of an inductance circuit) and the mechanical inertia (from the mass of the reed) existing in the system, but a time interval is required, and the size of the time interval directly influences the high-speed performance of the electromagnetic valve. The dynamic response time of the high-speed solenoid valve directly affects the improvement of the knitting speed, stability and productivity of the knitting machine, so that quantitative measurement of the dynamic response characteristic is necessary.
The coil of the electromagnetic valve 6 is electrified to be electromagnetically attracted so that the reed starts to move, and the corresponding time is defined as touch time tc; the reed starts to move and reaches a suction position, the corresponding time of the reed is movement time td, and the total suction time is tx which is tc plus td; the time from when the power is off until the reed begins to move to release is called the trip time, tfc, and the time from when the reed begins to move to return to the release position is the movement time, tfd, and the total release time, tf, tfc + tfd.
The main content of the measurement of the dynamic response characteristic is to measure the above-mentioned several time parameters (tx, tc, td of the pick-up process or tf, tfc, tfd of the release process) under the specified driving parameters, and the adopted measuring method is non-contact measurement based on machine vision.
The test bench 1 consists of a guide rail 10, a high-speed line scanning camera 5 capable of moving on the guide rail 10, an electromagnetic valve clamp, a light source 7, a collimating mirror 9 and ground glass 8. The light emitted by the light source 7 passes through the collimating mirror 9 and the frosted glass 8 and then becomes a uniform surface light source which is used as a background light source of the electromagnetic valve 6 to be measured. The high-speed line scanning camera 5 captures the action information of the reed of the electromagnetic valve 6, and the action information is collected by the video capture card and then sent to the upper computer 3 for processing.
The upper computer 3 is provided with an interactive interface, can set driving parameters and sends a measurement starting instruction; the video acquisition card is arranged in the upper computer 3 and is used for acquiring data of the high-speed line scanning camera under the triggering of the synchronous signal.
The FPGA control circuit board can set a test loop according to configuration parameters sent by the upper computer 3, generates a driving signal of the electromagnetic valve 6 under the instruction of the upper computer 3 and simultaneously generates a synchronous signal for a video acquisition card to use.
And the electromagnetic valve driving circuit board 13 comprises an 8-path electromagnetic valve driving circuit and an overcurrent protection circuit. The driving circuit allows the 8-way electromagnetic valve to be driven simultaneously, detects the driving current of the electromagnetic valve and has the function of automatically closing the driving circuit when the overcurrent phenomenon occurs.
A high-speed line scanning camera 5;
the camera model used by the test bench 1 is Basler L104K-1K, and belongs to a high-speed line scanning camera. The camera photosensitive element is a linear CCD array, can only carry out 1-dimensional imaging, but has extremely high scanning speed, and is mainly applied to the field of industrial detection requiring high speed and high precision. The main technical index of Basler L104K-1K is shown in Table 3.
TABLE 3Basler L104K-1K technical index
| Parameter(s) | Technical index |
| Sensor with a sensor element | 1024pixel |
| Size of pixel | 10μm×10μm |
| Pixel clock | 62.5MHz |
| Maximum line scan rate | 58.5KHz |
| Minimum line scan rate | 1KHz |
| Depth of pixel | 8bit or 10bit |
| Synchronous mode | Outer sync or free-run |
In the aspect of time measurement accuracy, the line scanning rate of the camera is 58.5KHz at most, so the minimum time resolution is 0.017ms, and therefore, the measurement accuracy on the dynamic response time is very high, and the line scanning rate of the camera is set to be 50KHz in the actual use process.
In terms of distance measurement accuracy, the pixel size of the camera is 10 micrometers multiplied by 10 micrometers, the camera is matched with a Pentax special line scanning lens YF5028A-035 (0.28-0.4X) in practical use, the distance measurement resolution is less than 10 micrometers/0.28-35.7 micrometers and the measurement range is more than 10 micrometers multiplied by 1024/0.4-25.6 mm under the condition of accurate focusing, and the measurement requirement is met.
Dynamic response characteristic measurement process:
the measurement of the time of the actuation of the solenoid valve 6 is taken as an example below to analyze the measurement process of the dynamic characteristic parameters of the solenoid valve 6. When the measurement starts, the upper computer 3 controls the PCI-6221 data acquisition card to set driving parameters for the FPGA control panel through the control bus and sends out a measurement instruction. After receiving the measurement instruction, the FPGA control board generates a driving signal according to the specified parameter to control the electromagnetic valve driving circuit to supply power to the electromagnetic valve to be measured, and simultaneously generates a synchronous signal to trigger the Solios-XCL image acquisition card to start driving the line scanning camera to acquire images, so that the electromagnetic valve 6 is electrified and the images are acquired synchronously, and the accuracy of time measurement is ensured. The high-speed line scanning camera 5 collects images of the action state of the reed of the electromagnetic valve 6 at a constant line scanning speed, transmits the images to the upper computer 3 through the image collection card, and can accurately judge the in-place action time point of the reed of the electromagnetic valve 6 through a proper image processing algorithm, so that the accuracy of time measurement is ensured.
In the process of reed movement of the electromagnetic valve 6, the line scanning camera 5 continuously scans to obtain a scanning image consisting of a series of scanning lines, as shown in fig. 3, black shadows in the scanning image represent the parts of the scanning lines blocked by the reeds, and white parts are the parts of light which are not blocked. It can be seen from the figure that, as the number of scanning lines increases, the black shielding part gradually moves from left to right, which means that the reed gradually moves from left to right, and when reaching a certain position, the black part basically does not move any more, which means that the reed is in place.
Processing the scanned image, and taking the middle line of the shielding part as a reference to obtain a motion trail diagram of the suction process, as shown in fig. 4, wherein the abscissa in the diagram is a time axis, and the resolution is the reciprocal of the line scanning rate of the camera (the line scanning rate of the system is set to 50KHz, so the time resolution is 1/50 KHz-0.02 ms); the ordinate is the displacement value, normalization processing has been performed in the figure, the displacement value of the reed of the electromagnetic valve 6 at the measurement starting position is set to be 0, and the displacement value of the end position after the reed is moved to the position is set to be 1.
On the motion trail diagram, two turning points A, B on the curve can be extracted according to the change of the slope of the curve, and the corresponding time parameter is calculated. Obviously, the time from the origin 0 to the turning point a is the above-mentioned touching time tc, the time from the point a to the point B is the moving time td, and the pull-in action time tx is tc + td. In addition, the trace diagram can also visually see the tiny rebounding process after the reed is in place, and the trace diagram also has a certain reference function for optimizing the driving parameters.
Solenoid valve drive circuit:
in the design and production process, different driving parameters are often required to be set for the solenoid valve driving circuit or different driving circuits are required to be replaced, so as to measure the dynamic response characteristics of the solenoid valve 6 respectively to evaluate the working effect of the driving circuit. Therefore, the electromagnetic valve driving circuit board 13 in the measuring system adopts a discrete design, and the dynamic characteristics of the electromagnetic valve 6 can be measured under different driving environments by replacing the electromagnetic valve driving circuit board 13, so that reference data is provided for the design and optimization of the driving modes of the electromagnetic valve 6 and the electromagnetic valve 6.
Fig. 5 shows a driving circuit used by the test platform for testing the dynamic response characteristics of a needle selection electromagnetic valve, a yarn nozzle electromagnetic valve, a triangular electromagnetic valve, a pressing block electromagnetic valve and a half-bending yarn electromagnetic valve for a computerized flat knitting machine at present, wherein the circuit adopts 30V single-voltage driving and has a selectable double-follow current loop. And measuring the cold-state direct current resistance of the coil.
The cold-state direct current resistance of the coil can reflect the quality of the coil winding and the welding process of the coil and the inner lead, can eliminate unqualified products such as broken wires, false welding and the like caused by careless operation procedures such as riveting, assembly and the like, and is an important parameter for directly reflecting the electromagnetic performance of the electromagnetic valve.
The principle of the measuring circuit is shown in fig. 6, and the voltage measurement is completed by using a data acquisition card with high input impedance and high common mode rejection ratio A/D channel, so that the measuring circuit adopts a simple series comparison type circuit. Setting the ambient temperature at 25 DEG CIn the process, the cold direct current resistance of the electromagnetic valve to be tested is R, and after the test voltage VTEST _ R is applied, the voltage drop at two ends of the electromagnetic valve to be tested is VxReference resistance RrefA voltage drop of V acrossrefThen, there are:
coil equivalent inductance measurement principle:
the equivalent inductance of the excitation coil is also an important parameter reflecting the electromagnetic performance of the electromagnetic valve, and has an important reference function on the improvement of the production process of the electromagnetic valve.
The measuring circuit principle is shown in FIG. 7, a DDS chip is adopted to generate a sinusoidal AC excitation signal VTEST _ L with frequency of 1KHz and amplitude of 0.25V, and the sinusoidal AC excitation signal VTEST _ L passes through a standard reference resistor R2And the solenoid valve to be tested (impedance Z ═ R)3+jωL1) The rear output signal is Vout. Then there are:
wherein, <math><mrow><mo>|</mo><mi>A</mi><mo>|</mo><mo>=</mo><mfrac><msqrt><msubsup><mi>R</mi><mn>3</mn><mn>2</mn></msubsup><mo>+</mo><msup><mrow><mn>4</mn><mi>π</mi></mrow><mn>2</mn></msup><msup><mi>f</mi><mn>2</mn></msup><msubsup><mi>L</mi><mn>1</mn><mn>2</mn></msubsup></msqrt><msub><mi>R</mi><mn>2</mn></msub></mfrac><mo>-</mo><mo>-</mo><mo>-</mo><mrow><mo>(</mo><mn>3</mn><mo>)</mo></mrow></mrow></math>
simultaneously acquiring input and output sinusoidal signals through analog voltage data acquisition, and outputting VoutAfter inversion, the output signal V is shown by equation (2)outThe amplitude ratio of the input sinusoidal alternating current excitation signal VTEST _ L is | A |, and the phase difference is theta.
The input and output signals are collected by a data acquisition card PCI6221 at a sampling rate of 100KSps, 4096 points are collected per channel, and then | A | and θ are solved by a Fourier spectrum analysis method. The specific method comprises the following steps: 4096-point FFT is respectively carried out on the two paths of signals, the ratio of fundamental frequency component values in the amplitude-frequency characteristics of the two signals is calculated, and the result is the value of | A |; calculating the phase difference of the fundamental frequency component in the phase-frequency characteristic, and adjusting the phase difference to be within a range of +/-180 degrees, namely the phase difference theta, substituting the values of | A | and theta into the formulas (3) and (4), so as to obtain the equivalent inductance of the electromagnetic valve to be tested:
pull-in/release voltage measurement principle:
referring to the test method of partial relay products, the pull-in voltage and the release voltage of the electromagnetic valve 6 are defined as follows:
pull-in voltage: the minimum coil voltage of the attraction of the electromagnetic valve 6 can be ensured in the release state;
when the voltage is lower than the pull-in voltage, the electromagnetic valve 6 can not generate pull-in action;
releasing voltage: the maximum coil voltage released by the electromagnetic valve 6 is ensured in the attraction state;
above the release voltage, the solenoid valve 6 will continue to maintain the pull-in condition.
The required test voltage is supplied by a numerical control direct current power supply PSS-3203 during measurement, the minimum stepping value can reach 0.01V, the output voltage range is 0-32V, and the current is 0-3A. In the process of increasing or decreasing the test voltage, the action detection of the electromagnetic valve is realized by shooting through the line scanning camera, namely, whether the reed of the electromagnetic valve 6 moves is judged, so that two voltage parameter values to be detected are obtained. The measurement schematic block diagram is shown in fig. 8.
Pull-in current measurement principle:
the current change curve of the solenoid valve 6 in the working process can reflect the quality of the manufacturing process of the conductive part of the solenoid valve, and is also an important reference for analyzing the working performance and improving the manufacturing process.
The method for measuring the pull-in current is to measure the I-t curve of the current of the coil of the solenoid valve 6 to be measured in a direct current driving mode. The measurement principle is shown in fig. 9, the digital control dc power supply is used to set the driving voltage, the pull-in current is sampled by a sampling resistor Rs connected in series with the solenoid valve 6 to be measured, and the magnitude of the current is calculated by measuring the voltage drop Vs across the sampling resistor. Because some solenoid valves 6 to be tested do not allow long-time direct current energization, the power MOS tube Q1 is added to control the energization state of the solenoid valves to be tested, and the high-level duration of the driving signals is set through the FPGA, so that the energization time of the solenoid valves to be tested can be accurately controlled.
Temperature rise measurement principle:
the temperature rise measurement is mainly used for measuring the temperature change condition of the coil of the electromagnetic valve 6 after long-time work.
The temperature rise of an electromagnetic coil with an insulating layer is generally measured by a resistance method, and the average temperature rise can be calculated according to the formula (6):
formula (6) can be rewritten as:
in the formula taupjIs the average temperature rise, Q, of the coil under test01And Q02To be measuredCoil cold resistance R1And a thermal resistance R2The temperature coefficient of resistance of the conductor material of the resistance coil measured at an ambient air temperature, alpha, of 0 deg.C (1/234.5 for copper). As can be seen from the formula (7), only the thermal resistance R has to be measured2And cold resistance R1Ratio (non-absolute resistance value) of (d), ambient temperature Q01And Q02Then the average temperature rise tau can be calculatedpj。
The above-mentioned embodiment does not limit the utility model in any way, and all the technical solutions that adopt the mode of equivalent replacement or equivalent transform to obtain all fall within the protection scope of the utility model.
Claims (3)
1. A dynamic parameter testing system of a high-speed electromagnetic valve for knitting machinery is characterized by comprising:
-a test bench (1) equipped with a high-speed linear array camera (5), a solenoid valve (6) to be tested and a light source (7), the high-speed linear array camera (5) being coaxial with the valve core of the solenoid valve (6) to be tested and the light source (7), the solenoid valve (6) to be tested being configured between the high-speed linear array camera (5) and the light source (7);
-a measurement and control circuit board (2), the measurement and control circuit board (2) comprising:
(1) the control circuit board (11) comprises a parallel data interface and an analog quantity measuring interface which are used for communicating with an upper computer;
(2) the measurement interface circuit board (12) comprises a relay array and a drive circuit thereof, wherein the relay array connects the electromagnetic valve (6) to be measured to the electromagnetic valve drive circuit board (13) or the electrical parameter measurement circuit board (14) according to the control signal;
(3) the electromagnetic valve driving circuit board (13) is used for providing a driving circuit of the electromagnetic valve (6) during dynamic response characteristic test;
(4) an electrical parameter measurement circuit board (14) providing a circuit and an interface for measuring each parameter of the solenoid valve (6);
the upper computer (3) is a high-performance computer and comprises a data acquisition card which is used for realizing communication with the measurement and control circuit board (2) and completing measurement of a voltage signal to be measured output by the measurement and control circuit board (2), and an image acquisition card which is used for synchronously acquiring and storing output data of the high-speed line scanning camera (5) and has a function of synchronously triggering the measurement interface circuit board (12);
an external power supply module (4) which comprises a measurement and control circuit board (2) and a to-be-tested electromagnetic valve (6) for providing a test power supply.
2. The dynamic parameter testing system of the high-speed electromagnetic valve for knitting machines of claim 1, characterized in that: the control circuit board (11) is an FPGA control circuit board.
3. The dynamic parameter testing system of the high-speed electromagnetic valve for knitting machines of claim 1, characterized in that: the high-speed linear array camera (5), the electromagnetic valve (6) to be tested and the light source (7) which are arranged on the test bench (1) are movably arranged on the guide rail (10), a collimating mirror (9) and wool glass (8) are further arranged between the electromagnetic valve (6) to be tested and the light source (7), and the collimating mirror (9) is located beside the light source (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206682887U CN201955448U (en) | 2010-12-20 | 2010-12-20 | Dynamic parameter test system of high speed solenoid valve for knitting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206682887U CN201955448U (en) | 2010-12-20 | 2010-12-20 | Dynamic parameter test system of high speed solenoid valve for knitting machine |
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| Publication Number | Publication Date |
|---|---|
| CN201955448U true CN201955448U (en) | 2011-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206682887U Expired - Lifetime CN201955448U (en) | 2010-12-20 | 2010-12-20 | Dynamic parameter test system of high speed solenoid valve for knitting machine |
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| Country | Link |
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| CN (1) | CN201955448U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102621488A (en) * | 2012-04-17 | 2012-08-01 | 哈尔滨工业大学 | System and method for testing storage performance of aerospace electromagnetic relay |
| CN102033199B (en) * | 2010-12-20 | 2013-01-23 | 常熟理工学院 | System for testing dynamic parameter of high-speed electromagnetic valve for knitting machine |
| CN103852645A (en) * | 2014-03-10 | 2014-06-11 | 芜湖精诺汽车电器有限公司 | Detection device for electric control box |
| CN104034518A (en) * | 2013-03-06 | 2014-09-10 | 哈米尔顿森德斯特兰德公司 | In Situ Flap And Slat Wing Tip Brake Response Tester |
| CN105572580A (en) * | 2016-02-26 | 2016-05-11 | 浪潮软件集团有限公司 | Method and system for testing response characteristic of electromagnetic valve |
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2010
- 2010-12-20 CN CN2010206682887U patent/CN201955448U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102033199B (en) * | 2010-12-20 | 2013-01-23 | 常熟理工学院 | System for testing dynamic parameter of high-speed electromagnetic valve for knitting machine |
| CN102621488A (en) * | 2012-04-17 | 2012-08-01 | 哈尔滨工业大学 | System and method for testing storage performance of aerospace electromagnetic relay |
| CN104034518A (en) * | 2013-03-06 | 2014-09-10 | 哈米尔顿森德斯特兰德公司 | In Situ Flap And Slat Wing Tip Brake Response Tester |
| CN104034518B (en) * | 2013-03-06 | 2017-11-17 | 哈米尔顿森德斯特兰德公司 | Wing flap in situ and slat wingtip brake response test instrument |
| CN103852645A (en) * | 2014-03-10 | 2014-06-11 | 芜湖精诺汽车电器有限公司 | Detection device for electric control box |
| CN105572580A (en) * | 2016-02-26 | 2016-05-11 | 浪潮软件集团有限公司 | Method and system for testing response characteristic of electromagnetic valve |
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