CN215178583U - Testing device for delay time and response time of electromagnetic valve - Google Patents
Testing device for delay time and response time of electromagnetic valve Download PDFInfo
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- CN215178583U CN215178583U CN202121175802.8U CN202121175802U CN215178583U CN 215178583 U CN215178583 U CN 215178583U CN 202121175802 U CN202121175802 U CN 202121175802U CN 215178583 U CN215178583 U CN 215178583U
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Abstract
A testing device for delay time and response time of an electromagnetic valve comprises a test bed and the electromagnetic valve fixed on the test bed through a fixing plate, wherein the electromagnetic valve comprises an electromagnetic valve core and a controller, and the controller of the electromagnetic valve is connected with an upper computer through a signal line; a left contact plate and a right contact plate are arranged on one side of the test bed close to the valve core of the electromagnetic valve, and an upper contact and a lower contact are correspondingly arranged on one side of the left contact plate opposite to the right contact plate; the solenoid valve spool is connected with a spool connecting rod through threads, and the other end of the spool connecting rod is fixedly provided with a contact iron block which is in contact with the upper contact and the lower contact; the upper contact and the lower contact are respectively connected with two ends of a resistor R through wires, two ends of the resistor R are respectively connected with a channel I of an oscilloscope through wires, and the oscilloscope collects voltage values at two ends of the resistor R through the channel I; and the channel two of the oscilloscope is connected with an upper computer through a pulse width signal wire to acquire a pulse width signal of the electromagnetic valve.
Description
Technical Field
The utility model relates to a solenoid valve test technical field, concretely relates to solenoid valve delay time and response time's testing arrangement.
Background
The hydraulic electromagnetic valve has response time in the process from the pulse width action command sent by the upper computer to the action completion. In some application occasions with high requirements on the response of the electromagnetic valve, the response time of the electromagnetic valve needs to be accurately estimated, and correction parameters are provided for the control of the electromagnetic valve. Application number "CN 201811559306.5" describes "a method for testing response time of an electromagnetic valve, which includes fixing the electromagnetic valve to be tested on a test bed; positioning the electromagnetic valve through a high-speed camera; sending a working instruction to the electromagnetic valve to enable a valve core of the electromagnetic valve to extend out; recording images of the electromagnetic valve from the receiving of a working instruction to the complete extension of the valve core through a high-speed camera; the analysis image is processed to obtain the response time of the solenoid valve and the action time of the valve core through the image. The utility model provides a solenoid valve response time test method has realized the test of host computer to solenoid valve delay time and response time, has made things convenient for solenoid valve in use's debugging, has also promoted the debugging precision "of solenoid valve simultaneously.
Above-mentioned utility model has realized making things convenient for solenoid valve in use's debugging to solenoid valve delay time and response time's test, also promoted the debugging precision of solenoid valve simultaneously. However, in an actual test, since the detection speed of the camera is required to be high, slight delay is likely to occur, so that the test error is large.
Disclosure of Invention
In view of the above technical problems, the present technical solution provides a device for testing delay time and response time of an electromagnetic valve, which can effectively solve the above problems.
The utility model discloses a following technical scheme realizes:
a testing device for delay time and response time of an electromagnetic valve comprises a test bed and the electromagnetic valve fixed on the test bed through a fixing plate, wherein the electromagnetic valve comprises an electromagnetic valve core and a controller, and the controller of the electromagnetic valve is connected with an upper computer through a signal line; a left contact plate and a right contact plate are arranged on one side of the test bed close to the valve core of the electromagnetic valve, and an upper contact and a lower contact are correspondingly arranged on one side of the left contact plate opposite to the right contact plate; the solenoid valve spool is connected with a spool connecting rod through threads, and the other end of the spool connecting rod is fixedly provided with a contact iron block which is in contact with the upper contact and the lower contact; the upper contact and the lower contact are respectively connected with two ends of a resistor R through wires, two ends of the resistor R are respectively connected with a channel I of an oscilloscope through wires, and the oscilloscope collects voltage values at two ends of the resistor R through the channel I; and the channel two of the oscilloscope is connected with an upper computer through a pulse width signal wire to acquire a pulse width signal of the electromagnetic valve.
Furthermore, the left contact plate and the right contact plate are made of insulating materials; the bottom of left contact board and right contact board is equipped with the screw hole, installs on the test bench through the fine setting bolt, through the distance of the bottom of the adjustable left contact board of rotatory fine setting bolt and right contact board to the test bench.
Furthermore, the left contact plate and the right contact plate are arranged at intervals; the inner side of the left contact plate is fixedly provided with a contact A and a contact B, and the inner side of the right contact plate is fixedly provided with a contact E and a contact F; when the left end surface of the contact iron block is in contact with the dome surfaces of the contact points A and B, the maximum distance that the solenoid valve can adjust is the distance between the end surface of the contact iron block and the dome surfaces of the contact points E and F, and the distance is set as S.
Further, the contact B and the contact F are connected with one end of the resistor R through leads, and the contact A and the contact F are connected with a power supply through leads and then connected with the other end of the resistor R; the whole circuit is conducted when the end surface of the contact iron block is completely contacted with the dome surface of the contact.
Further, when the left end of the contact iron block is completely contacted with the contact A and the contact B, the voltage value of two ends R in the acquisition circuit of the oscilloscope channel 1 is 5V; when the right end of the contact iron block is completely contacted with the contact E and the contact F, the voltage value of two ends of the R in the acquisition circuit of the oscilloscope channel 1 is 5V; and when the end face of the contact iron block is not in contact with the contact, the voltage value of two ends of the R in the acquisition circuit of the oscilloscope channel 1 is 0V.
Furthermore, a positive wire of the power supply is led out and is sequentially welded with the top ends of the contact A and the contact F, and a negative wire of the power supply is led out and passes through the resistor R and then is sequentially welded with the bottom ends of the contact B and the contact F.
Furthermore, the contact iron block and the valve core connecting rod are the same entity, and the valve core connecting rod is coaxial with the valve core of the electromagnetic valve and is connected with the valve core through threads.
A method for testing the delay time and the response time of an electromagnetic valve is characterized in that: the method comprises the following specific steps:
s1, firstly fixing the electromagnetic valve on an electromagnetic valve fixing plate through a bolt, and then fixing the electromagnetic valve fixing plate on a test bed through a bolt;
s2, fine-tuning a fine-tuning bolt at the bottom of the left contact plate, and adjusting the height of the left contact plate to enable the left end face of the contact iron block to be in contact with the surface of the dome of the circuit contact A, B;
s3, fine-tuning a fine-tuning bolt at the bottom of the right contact plate, and adjusting the height of the right contact plate to enable the right end face of the contact iron block to be in contact with the surface of the dome of the circuit contact E, F; the distance S required to be measured of the electromagnetic valve can be obtained through adjustment;
s4, leading out the positive wire from the power supply, and sequentially welding the positive wire with the top ends of the contacts on the left contact plate and the right contact plate;
s5, leading out the negative wire from the power supply, passing through a resistor R, and then sequentially welding the negative wire with the bottom ends of the contacts on the left contact plate and the right contact plate;
s6, acquiring voltage values of two ends of a resistor R through a channel 1, when the electromagnetic valve does not work, the left end of a contact iron block is completely contacted with a contact A, B, and the voltage values of the two ends of the resistor R in an acquisition circuit of an oscilloscope channel 1 are 5V;
s7, sending a pulse width signal to the electromagnetic valve on the experiment table through the upper computer to enable the valve core of the electromagnetic valve to start moving, separating the contact iron block from the A, B contact, and enabling the voltage value of two ends of the R in the acquisition circuit of the oscilloscope channel 1 to be 0V;
s8, when the electromagnetic valve starts to move, a channel 2 of the oscilloscope starts to collect electromagnetic valve pulse width signals sent by an upper computer;
s9, when the right end of the contact iron block is completely contacted with the E, F dome contact, the voltage value acquired by the oscilloscope channel 1 is 5V;
s10, selecting 100 cycles for the collected data and carrying out average processing to obtain the pulse width of the electromagnetic valve and the voltage value image at the two ends of the resistor R;
and S11, processing and analyzing the images to obtain that T1 is the solenoid valve delay time, and T2-T1 are the solenoid valve response time.
Further, before processing the analysis image, generating a valve core height-time curve; therefore, the curve can be used as a standard reference of the response time of the type of electromagnetic valve to be tested, and the later debugging of the type of electromagnetic valve in use is facilitated; the method further comprises the following steps:
s11.1, acquiring a reference pixel unit corresponding to the valve core in the image before the solenoid valve receives a working instruction;
s11.2, obtaining a dynamic pixel unit corresponding to the valve core in the image at any time;
step S11.3, taking the reference pixel unit as a zero point of the valve core height-time curve, taking the dynamic unit as a longitudinal axis of the valve core height-time curve, and taking the corresponding moment of the dynamic pixel unit as a horizontal axis of the valve core height-time curve;
therefore, the response time of the electromagnetic valve and the action time of the valve core can be intuitively obtained through the valve core height-time curve.
Advantageous effects
The utility model provides a pair of solenoid valve delay time and response time's testing arrangement compares with prior art, and it has following beneficial effect:
(1) according to the technical scheme, the delay time and the response time of the electromagnetic valve are indirectly obtained by collecting the pulse width signal sent by the upper computer and the voltage values at two ends of the resistor R according to the condition of the signal on the oscilloscope, so that the method is simple and easy to operate and has high test precision.
Drawings
Fig. 1 is a schematic view of the overall structure of the middle testing device of the present invention.
Fig. 2 is a schematic diagram of the circuit of the testing device in the present invention in a non-connected state.
Fig. 3 is a schematic diagram of the pulse width of the middle solenoid valve and the voltage value at the two ends of the resistor R.
The labels in the figures are: 1-an upper computer, 2-an electromagnetic valve control line, 3-a pulse width signal line, 4-an electromagnetic valve fixing plate, 5-an electromagnetic valve fixing bolt, 6-a test bench, 7-an electromagnetic valve fixing plate fine tuning bolt, 8-an oscilloscope, 9-a contact plate fine tuning bolt, 10-a contact iron block, 11-a contact, 12-an electromagnetic valve, 13-an electromagnetic valve core, 14-a valve core connecting rod, 15-a right contact plate, 16-a left contact plate and 17-a voltage test line.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The described embodiments are only some, but not all embodiments of the invention. Under the prerequisite that does not deviate from the design concept of the utility model, the ordinary person in the art should fall into the protection scope of the utility model to the various changes and improvements that the technical scheme of the utility model made.
Example 1:
as shown in fig. 1-2, a device for testing the delay time and response time of a solenoid valve comprises a test bed 6, and a solenoid valve 12 fixed on the test bed 6 through a fixing plate 4; the electromagnetic valve 12 is fixedly arranged on the electromagnetic valve fixing plate 4 through a fixing bolt 5; the electromagnetic valve fixing plate 4 is fixedly arranged on a test bed 6 through a bolt 7.
The electromagnetic valve 12 comprises an electromagnetic valve spool 13 and a controller, and the controller of the electromagnetic valve 12 is connected with the upper computer 1 through a signal line 2; a left contact plate 16 and a right contact plate 17 are arranged on one side of the test bed 6 close to the valve core 13 of the electromagnetic valve, and the left contact plate 16 and the right contact plate 15 are made of insulating materials; threaded holes are formed in the bottoms of the left contact plate 16 and the right contact plate 17, the left contact plate and the right contact plate are mounted on the test bed 6 through the fine adjustment bolts 9, and the distance from the bottoms of the left contact plate 16 and the right contact plate 15 to the test bed 6 can be adjusted by rotating the fine adjustment bolts 9.
The left contact plate 16 and the right contact plate 15 are arranged at intervals. An upper contact 11 and a lower contact are correspondingly arranged on one side of the left contact plate 16 opposite to the right contact plate 15; the left contact plate 16 has a contact a and a contact B fixed inside, and the right contact plate 15 has an E contact and an F contact fixed inside.
The electromagnetic valve core 13 is connected with a valve core connecting rod 14 through threads, and the other end of the valve core connecting rod 14 is fixedly provided with a contact iron block 10 which is in contact with the contact 11; the contact iron block 10 and the valve core connecting rod 14 are the same entity, and the valve core connecting rod 14 is coaxial with the valve core 13 of the electromagnetic valve and is connected with the valve core through threads. When the left end surface of the contact iron 10 is in contact with the dome surfaces of the contact points a and B, the maximum distance that the solenoid valve 13 can adjust is the distance between the end surface of the contact iron 10 and the dome surfaces of the contact points E and F, and the distance is set to S.
When the left end of the contact iron block 10 is completely contacted with the contact A and the contact B, the voltage value of two ends R in the channel 1 acquisition circuit of the oscilloscope 8 is 5V; when the right end of the contact iron block 10 is completely contacted with the contact E and the contact F, the voltage value of two ends of the R in the channel 1 acquisition circuit of the oscilloscope 8 is 5V; when the end face of the contact iron block 10 is not in contact with the contact, the voltage value of the two ends of the R in the channel 1 acquisition circuit of the oscilloscope 8 is 0V.
The upper contact and the lower contact are respectively connected with two ends of a resistor R through a lead 17, namely a contact B and a contact F are connected with one end of the resistor R through the lead 17, and the contact A and the contact F are connected with a power supply through the lead 17 and then connected with the other end of the resistor R; leading out a positive wire of the power supply, sequentially welding the positive wire with the top ends of the contact A and the contact F, leading out a negative wire of the power supply, firstly passing through the resistor R, and then sequentially welding the negative wire with the bottom ends of the contact B and the contact F; the whole circuit is conducted when the end surface of the contact iron 10 is completely contacted with the dome surface of the contact.
Two ends of the resistor R are respectively connected with a first channel of the oscilloscope 8 through a lead 17, and the oscilloscope 8 acquires voltage values at two ends of the resistor R through the first channel. And a second channel of the oscilloscope 8 is connected with the upper computer 1 through a pulse width signal wire 3 and is used for acquiring a pulse width signal of the electromagnetic valve 12.
Example 2:
a method for testing delay time and response time of an electromagnetic valve comprises the following specific steps:
s1, firstly fixing the electromagnetic valve on an electromagnetic valve fixing plate through a bolt, and then fixing the electromagnetic valve fixing plate on a test bed through a bolt;
s2, fine-tuning a fine-tuning bolt at the bottom of the left contact plate, and adjusting the height of the left contact plate to enable the left end face of the contact iron block to be in contact with the surface of the dome of the circuit contact A, B;
s3, fine-tuning a fine-tuning bolt at the bottom of the right contact plate, and adjusting the height of the right contact plate to enable the right end face of the contact iron block to be in contact with the surface of the dome of the circuit contact E, F; the distance S required to be measured of the electromagnetic valve can be obtained through adjustment;
s4, leading out the positive wire from the power supply, and sequentially welding the positive wire with the top ends of the contacts on the left contact plate and the right contact plate;
s5, leading out the negative wire from the power supply, passing through a resistor R, and then sequentially welding the negative wire with the bottom ends of the contacts on the left contact plate and the right contact plate;
s6, acquiring voltage values of two ends of a resistor R through a channel 1, when the electromagnetic valve does not work, the left end of a contact iron block is completely contacted with a contact A, B, and the voltage values of the two ends of the resistor R in an acquisition circuit of an oscilloscope channel 1 are 5V;
s7, sending a pulse width signal to the electromagnetic valve on the experiment table through the upper computer to enable the valve core of the electromagnetic valve to start moving, separating the contact iron block from the A, B contact, and enabling the voltage value of two ends of the R in the acquisition circuit of the oscilloscope channel 1 to be 0V;
s8, when the electromagnetic valve starts to move, a channel 2 of the oscilloscope starts to collect electromagnetic valve pulse width signals sent by an upper computer;
s9, when the right end of the contact iron block is completely contacted with the E, F dome contact, the voltage value acquired by the oscilloscope channel 1 is 5V;
s10, selecting 100 cycles for the collected data and carrying out average processing to obtain the pulse width of the electromagnetic valve and the voltage value image at the two ends of the resistor R;
and S11, processing and analyzing the images to obtain that T1 is the solenoid valve delay time, and T2-T1 are the solenoid valve response time.
The electromagnetic valve has the advantages that when the electromagnetic valve receives a working instruction, certain response time exists, and the valve core is still in the response time; and after the response time passes, the valve core begins to extend until the valve core extends to the maximum value. In order to measure the response time of the electromagnetic valve, in this embodiment, the time point of the pulse width signal sent by the upper computer to control the operation of the electromagnetic valve is obtained through the upper computer, the time point of the change of the voltage at the two ends of the resistor R is obtained through the oscilloscope, and the two time points are subtracted to obtain the response time; the time when the valve core starts to extend can be obtained by capturing the change of the voltage values at the two ends of the resistor R, and the change of the voltage values is compared, so that the time when the response time passes can be obtained, and the measurement of the response time is realized.
Generating a valve core height-time curve before processing the analysis image; therefore, the curve can be used as a standard reference of the response time of the type of electromagnetic valve to be tested, and the later debugging of the type of electromagnetic valve in use is facilitated; the method further comprises the following steps:
s11.1, acquiring a reference pixel unit corresponding to the valve core in the image before the solenoid valve receives a working instruction;
s11.2, obtaining a dynamic pixel unit corresponding to the valve core in the image at any time;
step S11.3, taking the reference pixel unit as a zero point of the valve core height-time curve, taking the dynamic unit as a longitudinal axis of the valve core height-time curve, and taking the corresponding moment of the dynamic pixel unit as a horizontal axis of the valve core height-time curve;
therefore, the response time of the electromagnetic valve and the action time of the valve core can be intuitively obtained through the valve core height-time curve.
Claims (7)
1. A testing device for delay time and response time of an electromagnetic valve comprises a test bed (6) and an electromagnetic valve (12) fixed on the test bed (6) through a fixing plate (4), wherein the electromagnetic valve (12) comprises an electromagnetic valve spool (13) and a controller, and the controller of the electromagnetic valve (12) is connected with an upper computer (1) through a signal line (2); the method is characterized in that: a left contact plate (16) and a right contact plate (15) are arranged on one side of the test bed (6) close to the valve core (13) of the electromagnetic valve, and an upper contact and a lower contact are correspondingly arranged on one side of the left contact plate (16) opposite to the right contact plate (15); the electromagnetic valve core (13) is connected with a valve core connecting rod (14) through threads, and the other end of the valve core connecting rod (14) is fixedly provided with a contact iron block (10) which is in contact with the upper contact and the lower contact; the upper contact and the lower contact are respectively connected with two ends of a resistor R through leads (7), two ends of the resistor R are respectively connected with a channel I of an oscilloscope (8) through the leads (7), and the oscilloscope (8) acquires voltage values at two ends of the resistor R through the channel I; and a second channel of the oscilloscope (8) is connected with the upper computer (1) through a pulse width signal wire (3) and is used for acquiring a pulse width signal of the electromagnetic valve (12).
2. The device for testing the delay time and the response time of the solenoid valve according to claim 1, wherein: the left contact plate (16) and the right contact plate (15) are made of insulating materials; threaded holes are formed in the bottoms of the left contact plate (16) and the right contact plate (15), the left contact plate and the right contact plate are mounted on the test bed (6) through the fine adjustment bolts (9), and the distance from the bottoms of the left contact plate (16) and the right contact plate (15) to the test bed (6) can be adjusted through rotating the fine adjustment bolts (9).
3. The device for testing the delay time and the response time of the solenoid valve according to claim 1, wherein: the left contact plate (16) and the right contact plate (15) are arranged at intervals; a contact A and a contact B are fixedly arranged on the inner side of the left contact plate (16), and a contact E and a contact F are fixedly arranged on the inner side of the right contact plate (15); when the left end face of the contact iron block (10) is in contact with the dome surfaces of the contact A and the contact B, the maximum adjustable distance of the electromagnetic valve (12) is the distance between the end face of the contact iron block (10) and the dome surfaces of the contact E and the contact F, and the distance is set to be S.
4. The device for testing the delay time and the response time of the solenoid valve according to claim 3, wherein: the contact B and the contact F are connected with one end of the resistor R through leads, and the contact A and the contact F are connected with a power supply through leads and then connected with the other end of the resistor R; the whole circuit is conducted when the end surface of the contact iron block (10) is completely contacted with the dome surface of the contact.
5. The device for testing the delay time and the response time of the solenoid valve according to claim 4, wherein: when the left end of the contact iron block (10) is completely contacted with the contact A and the contact B, the voltage value of two ends of the R in the acquisition circuit of the channel 1 of the oscilloscope (8) is 5V; when the right end of the contact iron block (10) is completely contacted with the contact E and the contact F, the voltage value of two ends of the R in the acquisition circuit of the channel 1 of the oscilloscope (8) is 5V; and when the end face of the contact iron block (10) is not in contact with the contact, the voltage value of two ends of the R in the channel 1 acquisition circuit of the oscilloscope (8) is 0V.
6. The device for testing the delay time and the response time of the solenoid valve according to claim 4, wherein: and the positive wire of the power supply is led out and is sequentially welded with the top ends of the contact A and the contact F, and the negative wire of the power supply is led out and passes through the resistor R and then is sequentially welded with the bottom ends of the contact B and the contact F.
7. The device for testing the delay time and the response time of the solenoid valve according to claim 1, wherein: the contact iron block (10) and the valve core connecting rod (14) are the same entity, and the valve core connecting rod (14) is coaxial with the valve core (13) of the electromagnetic valve and is connected with the valve core (13) through threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121175802.8U CN215178583U (en) | 2021-05-28 | 2021-05-28 | Testing device for delay time and response time of electromagnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121175802.8U CN215178583U (en) | 2021-05-28 | 2021-05-28 | Testing device for delay time and response time of electromagnetic valve |
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| Publication Number | Publication Date |
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| CN215178583U true CN215178583U (en) | 2021-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121175802.8U Expired - Fee Related CN215178583U (en) | 2021-05-28 | 2021-05-28 | Testing device for delay time and response time of electromagnetic valve |
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| CN (1) | CN215178583U (en) |
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2021
- 2021-05-28 CN CN202121175802.8U patent/CN215178583U/en not_active Expired - Fee Related
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Granted publication date: 20211214 |