CN116045866A - Knife switch position sensor precision test fixture - Google Patents
Knife switch position sensor precision test fixture Download PDFInfo
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- CN116045866A CN116045866A CN202111165267.2A CN202111165267A CN116045866A CN 116045866 A CN116045866 A CN 116045866A CN 202111165267 A CN202111165267 A CN 202111165267A CN 116045866 A CN116045866 A CN 116045866A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
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Abstract
The invention provides a knife switch position sensor precision testing tool, and belongs to the field of substation equipment state monitoring. The device comprises a fixed plate for setting a sensor to be tested and a revolving frame for driving the fixed plate to rotate in the horizontal direction; the fixed plate is rotationally assembled on the revolving frame, and the rotating shaft center is horizontally arranged and parallel to the surface of the fixed plate; the sensor to be tested is tested in the pitch angle direction by enabling the fixed plate to rotate around the rotation axis; the fixed plate rotates to be in a horizontal state, and the sensor to be tested is tested in the course angle direction by enabling the revolving frame to rotate in the horizontal direction; the fixed plate rotates to the vertical direction, and the sensor to be tested is tested in the rolling angle direction by enabling the revolving frame to rotate in the horizontal direction. The signal receiving device collects angle data of the sensor to be detected and sets an allowable error value, the controller sets a rotation angle value of the motor, and whether the collected value of the signal receiving device and the set value error of the controller are within the set allowable error range is compared to finish the test.
Description
Technical Field
The invention relates to a knife switch position sensor precision testing tool, and belongs to the field of substation equipment state monitoring.
Background
The disconnecting link position sensor is generally arranged on GW 46-126/3150, GW 46-252/3150, GW 46-420/3150, GW 46-550/3150 high-voltage disconnecting switch and other high-voltage alternating current/direct current disconnecting switches, the current position state of the disconnecting switch needs to be reflected by collecting signal information of the sensor, the accuracy of the sensor is critical for judging the current state of the disconnecting switch, large errors easily cause misjudgment and cause fault alarm, and after faults, professional technicians need to replace on site according to a power failure plan of a transformer substation, so that the engineering application cost is increased. The existing knife switch position sensor has angle drift and precision error, and the conventional test at present only carries out rough static drift test on the sensor, so that the test requirement of products cannot be met.
Disclosure of Invention
The invention aims to provide a knife switch position sensor precision testing tool which is used for solving the problem that precision testing cannot be conducted on a sensor.
In order to achieve the above purpose, the invention provides a knife switch position sensor precision testing tool, which comprises a fixed plate for fixedly arranging a sensor to be tested and a revolving frame for driving the fixed plate to rotate in the horizontal direction; the fixed plate is rotatably assembled on the revolving frame, and the rotation axis is arranged in the horizontal direction and parallel to the surface of the fixed plate.
The sensor to be tested is tested in the pitch angle direction by enabling the fixed plate to rotate around the rotation axis; the fixing plate rotates to a horizontal state, and the sensor to be tested is tested in the course angle direction by enabling the revolving frame to rotate in the horizontal direction; the fixing plate rotates to the vertical direction, and the sensor to be tested is tested in the rolling angle direction by enabling the revolving frame to rotate in the horizontal direction.
The beneficial effects of the invention are as follows: the pitch angle direction and the course angle direction of the sensor to be detected are respectively controlled by adopting two rotating shafts, and the rolling angle direction of the sensor to be detected is cooperatively controlled by the two rotating shafts, so that the conception is ingenious.
Further, in the above tool, the turret includes two arms that are oppositely disposed, and the fixing plate is disposed between the arms; the revolving frame is supported by a rotating shaft at the bottom.
Further, in the above-mentioned frock, still include first motor, first motor is fixed to be set up on a support arm of revolving frame, first motor drive fixed plate is rotatory along the horizontal axis.
Further, in the tooling, the tooling further comprises a first conductive slip ring arranged on the other support arm without the first motor; the first conductive slip ring comprises a stator and a rotor, the stator is fixed on the support arm, and the rotor rotates along with the fixing plate; the power supply circuit and the sampling circuit of the sensor to be tested are connected to the rotary frame through the first conductive sliding ring.
The beneficial effects of doing so are: the pitch angle direction is specifically controlled by the first motor, and the first conductive slip ring rotates along with the first motor, so that the problem that a wire is wound due to rotation of the first motor is avoided.
Further, in the tool, the tool further comprises a second motor, and the second motor drives the revolving frame to rotate along the horizontal direction.
Further, in the tool, a second conductive slip ring is arranged at the rotating shaft at the bottom of the revolving frame, the second conductive slip ring comprises a stator and a rotor, the stator is fixed on a supporting structure of the revolving frame, and the rotor rotates along with the revolving frame; and a power supply circuit and a sampling circuit of the sensor to be tested are connected out of the rotary frame through the second conductive sliding ring.
The beneficial effects of doing so are: the second motor specifically controls the course angle direction, and the second conductive slip ring rotates along with the second motor, so that the problem of winding of wires caused by rotation of the second motor is avoided.
Further, in the tool, a via hole is formed in the bottom of the revolving frame, and the via hole is used for connecting a power supply line and a sampling line of the sensor to be tested out of the test tool; the revolving frame is provided with a rotation setting angle.
The second conductive slip ring can be replaced by a via hole, and the power supply circuit and the sampling circuit of the sensor to be tested are directly connected out of the test tool through the via hole, so that the structure is simpler and more available, the rotating angle of the revolving frame is limited, and the problem of winding of a lead caused by overlarge rotating amplitude of the revolving frame is avoided.
Further, in the tool, the tool further comprises a controller and a signal receiving device connected with the controller, and the sensor to be tested is connected to the signal receiving device in an RS-485 mode.
Further, in the tooling, the controller is in control connection with the first motor and the second motor.
Further, in the above-mentioned frock, the signal receiving device is used for receiving the monitoring data of the sensor that awaits measuring to compare with the motor control command setting value of controller and obtain the error value, whether through judging the error value is within the settlement threshold value, accomplish the precision test.
Drawings
FIG. 1 is a schematic diagram of a knife switch position sensor test fixture;
FIG. 2 is a schematic diagram of a knife switch position sensor test fixture;
FIG. 3 is a schematic diagram of an electrically conductive slip ring;
FIG. 4 is a schematic view of the sensor's pitch angle, roll angle, and heading angle changes;
FIG. 5 is a schematic top view of a mounting plate;
FIG. 6 is a schematic top view of a change in course angle of a fixed plate;
FIG. 7 is a top view schematic of a change in fixed plate pitch angle;
fig. 8 is a schematic top view of a variation in roll angle of a fixing plate.
The test platform 1, the fixed plate 2, the sensor 20-29 to be tested, the control platform 3, the signal receiving device 4, the horizontal conductive slip ring 51, the vertical conductive slip ring 52, the power supply 6, the horizontal servo motor 71, the vertical servo motor 72, the revolving frame 8, the fixed plate 9 and the through hole 10.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical principles and practical applications of the present invention will be further described in detail with reference to the accompanying drawings and examples.
As shown in fig. 1, the knife switch position sensor precision testing tool comprises a testing platform 1, a control platform 3, a signal receiving device 4, a conductive slip ring 51 and a power supply 6. The test platform 1 comprises a fixed plate 2 for fixedly placing a sensor to be tested and a revolving frame 8 for driving the fixed plate 2 to carry out precision test. The control platform 3 is in control connection with the test platform 1, and the sensors 20-29 to be tested are in communication connection with the signal receiving device 4; the power supply 6 is connected to the test platform 1, the control platform 3 and the signal receiving device 4, and the test platform 1 supplies power to the sensors 20-29 to be tested.
The test platform 1 is used for placing the sensor to be tested and driving the sensor to be tested to rotate in multiple directions and angles so as to realize the precision test of the sensor to be tested in different directions and angles. The control platform 3 is used for setting parameters such as the rotation speed, the rotation angle, the test times and the like of the test platform 1, and is connected with the test platform 1 through the RS-485 bus control to send control parameters. The signal receiving device 4 is connected with signal lines of the sensors to be detected through an RS-485 bus mode, and is used for collecting current position information of the sensors to be detected and sending the current position information to the control platform 3. The conductive slip ring mainly realizes connection of a power line and a signal line, and solves the problem that the connecting line is restrained due to continuous rotation of the test platform 1 through the design of the conductive slip ring. The power supply 6 is led in 220V working power from alternating current commercial power and is converted into direct current 24V through the switch power supply module, 220V alternating current is respectively provided for the test platform 1, the control platform 3 and the signal receiving device 4, and 24V direct current is provided for each sensor to be tested.
As shown in fig. 2, the turret 8 is fixedly connected to the supporting structure, the center of the bottom of the turret 8 is fixedly connected with the fixed disk 9, the center of the fixed disk 9 is fixedly connected with the rotor part of the servo motor with a vertical rotating shaft, and the table top of the test platform 1 is fixedly connected to the stator part of the vertical conductive slip ring 52. The servo motor can be installed at other positions at the bottom of the revolving frame 8 towards other directions, so that the revolving frame 8 and the table top of the test platform 1 can rotate relatively to the vertical rotating shaft of the vertical servo motor 72. One support arm of the revolving frame 8 is fixedly connected with a stator part of the horizontal servo motor 71, a rotor horizontal rotating shaft of the horizontal servo motor 71 penetrates through two support arms of the revolving frame 8, and the fixing plate 2 is connected to the horizontal rotating shaft and can symmetrically rotate by taking the horizontal rotating shaft as an axle center.
The test platform 1 further comprises a conductive slip ring, specifically a 4-channel 10A via slip ring, the conductive slip ring is specifically structured as shown in fig. 3, and mainly comprises a rotor part and a stator part which can rotate relatively by 360 degrees, and the stator part and the rotor part are provided with similar electric brush designs, so that stable connection of a communication line and a power supply line in the process of relative rotation can be ensured, and the problem of winding of a wire caused by rotation is avoided. The stator part of the horizontal conductive slip ring 51 is mounted on the other arm of the turret 8 opposite to the horizontal servo motor 71, and the rotor part of the horizontal conductive slip ring 51 is fixedly connected to the rotation shaft of the horizontal servo motor 71, so that the rotor of the horizontal conductive slip ring 51 rotates simultaneously with the rotation shaft of the horizontal servo motor 71 at the same speed. The rotating shaft of the vertical servo motor 72 is fixedly connected with the rotor part of the vertical conductive slip ring 52, and the stator part of the vertical conductive slip ring 52 is fixedly connected with the fixed disk 9, so that the rotor of the vertical conductive slip ring 52 rotates at the same speed along with the rotating shaft of the vertical servo motor 72. Instead of mounting the vertical conductive slip ring 52, the via 10 may be left on the fixed disk 9. Each sensor to be detected is connected in series to the access end of the horizontal conductive slip ring 51 in a RS-485 bus mode, the access end of the horizontal conductive slip ring 51 is connected to the access end of the vertical conductive slip ring 52, and the access end of the vertical conductive slip ring 52 is connected to the control platform 3 and the signal receiving device 4; if the scheme of leaving the via hole 10 is adopted, the output end of the horizontal conductive slip ring 51 is directly connected to the control platform 3 and the signal receiving device 4 after passing through the via hole 10.
As shown in fig. 4, the direction of the lead wire of the sensor to be measured in fig. 4 is denoted as the positive direction, which is the same as the front view direction of fig. 2. And respectively defining an x-axis, a y-axis and a z-axis of a three-dimensional space coordinate system of the sensor to be detected as a pitch angle calculation axis, a roll angle calculation axis and a course angle calculation axis. Fig. 5 is a top view of the test fixture of fig. 2, with fig. 5 set to an initial state. By rotating FIG. 5 90 degrees along the vertical axis to obtain FIG. 6, the course angle of the sensor to be measured shown in FIG. 4 changes by 90 degrees during this process, and it can be understood that the vertical servo motor 72 can independently control the change of the course angle of the sensor to be measured. Returning to the initial state, turning fig. 5 by 90 degrees along the horizontal rotation axis to obtain fig. 7, in this process, the pitch angle of the sensor to be measured shown in fig. 4 is changed by 90 degrees, and it can be understood that the horizontal servo motor 71 can individually control the change of the pitch angle of the sensor to be measured. By combining the two points, returning to the initial state, firstly rotating the graph 5 by 90 degrees along the horizontal rotating shaft to obtain the graph 7, then rotating the graph 7 by 90 degrees along the vertical rotating shaft to obtain the graph 8, and changing the rolling angle of the sensor to be tested shown in the graph 4 by 90 degrees in the process of changing the graph 7 to the graph 8, so that the change of the rolling angle of the sensor to be tested can be controlled by combining rotation of the two servo motors, and the rotation test of each direction of the sensor to be tested is realized.
Specifically, when the method is used for testing the course angle of the sensor to be tested, a course angle change command is input on the control platform 3, and the control platform 3 controls the vertical servo motor 72 to rotate by a corresponding angle to realize course angle change; when a pitch angle of a sensor to be tested is tested, a pitch angle change command is input on the control platform 3, and the control platform 3 controls the horizontal servo motor 71 to rotate by a corresponding angle to realize pitch angle change; when the sensor to be tested is subjected to the rolling angle test, a rolling angle change command is input on the control platform 3, the control platform 3 controls the horizontal servo motor 71 to rotate 90 degrees, and then controls the vertical servo motor 72 to rotate by a corresponding angle to realize rolling angle change.
Each sensor 20-29 to be detected transmits the acquired data to the control platform 3 through the signal receiving device 4, the control platform 3 compares the sensor test data to be detected with the control command of the control platform 3 to obtain an error value of the sensor to be detected, and whether the error value is within a set threshold value is judged to finish the precision test.
Through the whole analysis of the technical scheme, the design thought and the testing method of the system are determined, the portability and the high efficiency of the test of the sensor to be tested are improved, the labor intensity of staff is reduced, and the testing efficiency can be improved by more than 60%; the stability of the product is improved, the reliability of engineering application is ensured, the manual debugging cost is reduced, and the effects of cost reduction and synergy are achieved.
The specific working flow is as follows:
the control platform 3 sets parameters such as the rotation speed, rotation angle, test times, interval period and the like of the test platform 1 and then transmits specific commands to the vertical servo motor 72 and the horizontal servo motor 71. The vertical servo motor 72 controls rotation in the course angle, the horizontal servo motor 71 controls rotation in the pitch angle, and the two servo motors together complete rotation of the roll angle. The power lines and the signal lines of the sensors to be tested are collected together through the fixed terminal blocks by arranging the sensors to be tested on the fixed plate 2, four lines of DC24+, DC24-, RS-485+ and RS-485 are led out to the input end of the horizontal conductive slip ring 51, the output end of the horizontal conductive slip ring 51 is connected to the input end of the vertical conductive slip ring 52, the output end of the vertical conductive slip ring 52 is connected to the control platform 3 and the signal receiving device 4, and if a scheme of reserving a through hole 10 is adopted, the output end of the horizontal conductive slip ring 51 is directly connected to the control platform 3 and the signal receiving device 4 after passing through the through hole 10, so that the output of test data of the sensors to be tested is realized. The signal receiving device 4 collects data of the sensor to be detected and transmits the data to the control platform 3, the control platform 3 compares the collected data of the sensor to be detected with a control command of the control platform 3 to obtain an error value of the sensor to be detected, and whether the error value is within a set threshold value or not is judged to finish the precision test.
Claims (10)
1. The tool for testing the precision of the disconnecting link position sensor is characterized by comprising a fixed plate for fixedly arranging the sensor to be tested and a revolving frame for driving the fixed plate to rotate in the horizontal direction; the fixed plate is rotatably assembled on the revolving frame, and the rotating shaft center is horizontally arranged and parallel to the surface of the fixed plate;
the sensor to be tested is tested in the pitch angle direction by enabling the fixed plate to rotate around the rotation axis; the fixing plate rotates to a horizontal state, and the sensor to be tested is tested in the course angle direction by enabling the revolving frame to rotate in the horizontal direction; the fixing plate rotates to the vertical direction, and the sensor to be tested is tested in the rolling angle direction by enabling the revolving frame to rotate in the horizontal direction.
2. The tool for testing the precision of the knife switch position sensor according to claim 1, wherein the revolving frame comprises two support arms which are oppositely arranged, and the fixing plate is arranged between the support arms; the revolving frame is supported by a rotating shaft at the bottom.
3. The tool for testing the precision of the knife switch position sensor according to claim 2, further comprising a first motor fixedly arranged on one support arm of the turret, wherein the first motor drives the fixing plate to rotate along a horizontal axis.
4. The tool for testing the precision of the disconnecting link position sensor according to claim 3, further comprising a first conductive slip ring arranged on the other support arm where the first motor is not arranged; the first conductive slip ring comprises a stator and a rotor, the stator is fixed on the support arm, and the rotor rotates along with the fixing plate; the power supply circuit and the sampling circuit of the sensor to be tested are connected to the rotary frame through the first conductive sliding ring.
5. The tool for testing precision of a knife switch position sensor according to claim 4, further comprising a second motor, wherein the second motor drives the turret to rotate in a horizontal direction.
6. The tool for testing the precision of the disconnecting link position sensor according to claim 5, wherein a second conductive slip ring is arranged at a rotating shaft at the bottom of the revolving frame, the second conductive slip ring comprises a stator and a rotor, the stator is fixed on a supporting structure of the revolving frame, and the rotor rotates along with the revolving frame; and a power supply circuit and a sampling circuit of the sensor to be tested are connected out of the rotary frame through the second conductive sliding ring.
7. The tool for testing the precision of the disconnecting link position sensor according to claim 5, wherein a via hole is formed in the bottom of the turret, and the via hole is used for connecting a power supply line and a sampling line of the sensor to be tested out of the tool for testing; the turret has a set rotation angle.
8. The tool for testing the precision of the disconnecting link position sensor according to claim 7, further comprising a controller and a signal receiving device connected with the controller, wherein the sensor to be tested is connected to the signal receiving device in an RS-485 mode.
9. The knife switch position sensor accuracy testing tool of claim 8, wherein the controller is in control connection with the first motor and the second motor.
10. The tool for testing the precision of the knife switch position sensor according to claim 8, wherein the signal receiving device is used for receiving monitoring data of the sensor to be tested, comparing the monitoring data with a motor control command set value of the controller to obtain an error value, and judging whether the error value is within a set threshold value to finish the precision test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111165267.2A CN116045866A (en) | 2021-09-30 | 2021-09-30 | Knife switch position sensor precision test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111165267.2A CN116045866A (en) | 2021-09-30 | 2021-09-30 | Knife switch position sensor precision test fixture |
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| Publication Number | Publication Date |
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| CN116045866A true CN116045866A (en) | 2023-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111165267.2A Pending CN116045866A (en) | 2021-09-30 | 2021-09-30 | Knife switch position sensor precision test fixture |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116699398A (en) * | 2023-05-29 | 2023-09-05 | 武汉莱创德技术有限公司 | Novel high-efficient toggle test platform |
-
2021
- 2021-09-30 CN CN202111165267.2A patent/CN116045866A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116699398A (en) * | 2023-05-29 | 2023-09-05 | 武汉莱创德技术有限公司 | Novel high-efficient toggle test platform |
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