CN217604935U - Disconnecting link position sensor precision testing tool - Google Patents
Disconnecting link position sensor precision testing tool Download PDFInfo
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- CN217604935U CN217604935U CN202122410486.4U CN202122410486U CN217604935U CN 217604935 U CN217604935 U CN 217604935U CN 202122410486 U CN202122410486 U CN 202122410486U CN 217604935 U CN217604935 U CN 217604935U
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Abstract
The utility model provides a switch position sensor precision test frock belongs to transformer substation equipment state monitoring field. The device comprises a fixed plate for 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 rotary frame, and the rotating axis is arranged in the horizontal direction and is parallel to the surface of the fixed plate; the fixed plate rotates around the rotating shaft center to realize the test of the sensor to be tested in the pitch angle direction; when the fixed plate rotates to the horizontal state, the sensor to be tested is tested in the course angle direction by enabling the rotating 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 direction of the rolling angle by enabling the rotating frame to rotate in the horizontal direction. The signal receiving device collects the angle data of the sensor to be tested and sets an allowable error, the controller sets the rotation angle of the motor, and the signal receiving device compares whether the error between the collection value of the signal receiving device and the set value of the controller is within the set allowable error range to finish the test.
Description
Technical Field
The utility model relates to a switch position sensor precision test frock belongs to transformer substation equipment state monitoring field.
Background
The knife switch position sensors are generally installed on GW46-126 \/3150, GW46-252 \/3150, GW46-420 \/3150, GW46-550 \/3150 high-voltage isolating switches and other high-voltage AC/DC isolating switches, the current position state of the isolating switches needs to be reflected by collecting signal information of the sensors, the accuracy of the sensors is critical for judging the current state of the isolating switches, large errors easily cause misjudgment and fault alarm, and professional technicians need to be dispatched to replace the switches on site according to a power failure plan of a transformer substation after faults occur, so that the engineering application cost is increased. The existing knife switch position sensor has angle drift and precision error, and the conventional test only carries out rough static drift test on the sensor at present, and can not meet the test requirements of products.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a switch position sensor precision test frock for solve the problem that can't do the precision test to the sensor.
In order to achieve the purpose, the utility model provides a disconnecting link 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 rotating axis is arranged in the horizontal direction and is parallel to the surface of the fixed plate.
The beneficial effects of the utility model are that: the pitch angle direction and the course angle direction of the sensor to be detected are respectively controlled by adopting the two rotating shafts, the two rotating shafts cooperatively control the rolling angle direction of the sensor to be detected, and the concept is ingenious.
Further, in the tooling, the revolving frame comprises two support arms which are arranged oppositely, and the fixing plate is arranged between the support arms; the revolving frame is supported through a rotating shaft at the bottom.
Further, in the above tooling, the tooling further comprises a first motor, the first motor is fixedly arranged on one support arm of the revolving frame, and the first motor drives the fixing plate to rotate along the horizontal axis.
Further, in the above tooling, a first conductive slip ring is further included, which is arranged on the other 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; and the power supply line and the sampling line of the sensor to be tested are connected out of the revolving frame through the first conductive slip ring.
The beneficial effects of doing so are: the first motor specifically controls the pitch angle direction, and the first conductive slip ring rotates along with the first motor, so that the problem that the wires are wound due to the rotation of the first motor is avoided.
Further, in above-mentioned frock, still include the second motor, the second motor drive revolving rack rotates along the horizontal direction.
Further, in the above tooling, 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 the supporting structure of the revolving frame, and the rotor rotates with the revolving frame; and the power supply circuit and the sampling circuit of the sensor to be tested are connected out of the revolving frame through the second conductive slip 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 that the wire is wound due to the rotation of the second motor is solved.
Furthermore, in the tool, a through hole is formed in the bottom of the revolving frame, and the through hole is used for leading a power supply line and a sampling line of the sensor to be tested out of the test tool; the revolving frame has a rotation set angle.
The second conductive slip ring can be replaced by a through hole, the power supply line and the sampling line of the sensor to be tested are directly led out of the test tool through the through hole, the structure is simpler and more easily obtained, the rotating angle of the rotary frame is limited, and the problem that the wires are wound due to the fact that the rotating amplitude of the rotary frame is too large 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 above tooling, the controller is connected to the first motor and the second motor.
Drawings
FIG. 1 is a schematic diagram of a testing tool for a knife switch position sensor;
FIG. 2 is a schematic structural view of a testing tool for a knife switch position sensor;
FIG. 3 is a schematic view of a conductive slip ring structure;
FIG. 4 is a schematic diagram showing changes in pitch angle, roll angle, and heading angle of the sensor;
FIG. 5 is a top view of the fixing plate;
FIG. 6 is a schematic view of a variation of the fixed plate course angle from above;
FIG. 7 is a schematic top view of the change in pitch angle of the fixing plate;
fig. 8 is a schematic top view of the variation of roll angle of the fixed plate.
The system comprises a test platform 1, a fixed plate 2, sensors to be tested 20-29, a control platform 3, a signal receiving device 4, a horizontal conductive slip ring 51, a vertical conductive slip ring 52, a power supply 6, a horizontal servo motor 71, a vertical servo motor 72, a rotary frame 8, a fixed plate 9 and a through hole 10.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the following description, taken in conjunction with the accompanying drawings and embodiments, will explain the technical principles and practical applications of the present invention in further detail.
As shown in fig. 1, the tool for testing the precision of the disconnecting link position sensor 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 fixing plate 2 for fixedly placing a sensor to be tested and a rotary frame 8 for driving the fixing plate 2 to carry out precision test. The control platform 3 is connected with the test platform 1 in a control mode, and the sensors to be tested 20-29 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 to 29 to be tested.
The test platform 1 is used for placing a sensor to be tested and driving the sensor to be tested to rotate in multiple directions and multiple 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 rotating speed, the rotating angle and the testing times of the testing platform 1, and is connected with the testing platform 1 through the RS-485 bus control to send the control parameters. The signal receiving device 4 is connected with the signal lines of the sensors to be tested in an RS-485 bus mode, and is used for collecting current position information of the sensors to be tested and sending the current position information to the control platform 3. The conductive slip ring mainly realizes the connection of a power line and a signal line, and the problem that the connection is restrained due to the continuous rotation of the test platform 1 is solved through the design of the conductive slip ring. The power supply 6 introduces a 220V working power supply from an alternating current commercial power and converts the working power supply into direct current 24V through the switching power supply module, and the direct current 24V is respectively used for providing 220V alternating current for the test platform 1, the control platform 3 and the signal receiving device 4 and providing 24V direct current for each sensor to be tested.
As shown in FIG. 2, the revolving frame 8 is fixedly connected to the supporting structure, the center of the bottom of the revolving frame 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 testing platform 1 is fixedly connected with the stator part of the vertical conductive slip ring 52. The servo motor can also be arranged at other positions at the bottom of the revolving frame 8 and face other directions, and finally 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 rotary 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 the two support arms of the rotary 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 axis.
The test platform 1 further comprises a conductive slip ring, specifically a 4-way 10A via hole slip ring, the conductive slip ring mainly comprises a rotor part and a stator part which can rotate relatively for 360 degrees, similar electric brush designs are arranged between the stator part and the rotor part, stable connection between a communication line and a power supply line in the process of relative rotation can be guaranteed, and the problem of winding of the conducting wire due to rotation is avoided. The stator part of the horizontal conductive slip ring 51 is arranged on the other arm of the revolving frame 8 and is opposite to the horizontal servo motor 71, and the rotor part of the horizontal conductive slip ring 51 is fixedly connected to the rotating shaft of the horizontal servo motor 71, so that the rotor of the horizontal conductive slip ring 51 rotates at the same speed with the rotating shaft of the horizontal servo motor 71. The rotating shaft of the vertical servo motor 72 is fixedly connected with the rotor part of the vertical conductive sliding ring 52, and the stator part of the vertical conductive sliding ring 52 is fixedly connected with the fixed disk 9, so that the rotor of the vertical conductive sliding 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, vias 10 may be left in the stationary disc 9. Each sensor to be measured is connected in series to the access end of the horizontal conductive slip ring 51 in an 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 reserving the 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.
As shown in fig. 4, the direction of the access wire of the sensor to be measured in fig. 4 is marked as the positive direction, which is the same as the direction of the front view 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 measured as a pitch angle calculation axis, a roll angle calculation axis and a course angle calculation axis. Fig. 5 is a plan view of the test fixture of fig. 2, where fig. 5 is set to an initial state. Figure 5 is followed vertical pivot and is rotated 90 degrees and is obtained figure 6, and the course angle of the sensor that awaits measuring that figure 4 shows in this process changes 90 degrees, through the utility model provides a vertical servo motor 72 realizes the change of the sensor course angle that awaits measuring to test course angle sensing function. Get back to initial condition, get figure 7 along the rotatory 90 degrees of horizontal rotating shaft with figure 5, the angle of pitch that awaits measuring the sensor that figure 4 shows in this process changes 90 degrees, through the utility model provides a horizontal servo motor 71 realizes the change of the sensor angle of pitch that awaits measuring to test the angle of pitch sensing function. Combine two above processes, get back to initial condition, earlier obtain figure 7 along the rotatory 90 degrees of horizontal rotating shaft with figure 5, again with figure 7 along the rotatory 90 degrees of vertical rotating shaft obtain figure 8, change to the roll angle of the sensor that awaits measuring that figure 4 is shown in the in-process of figure 8 by figure 7 and change 90 degrees, consequently can combine to rotate the change of control await measuring sensor roll angle through two servo motor, realize passing through from this the utility model discloses to the rotation test of each direction of the sensor that awaits measuring.
The acquired data of the sensors 20 to 29 to be detected are transmitted to the control platform 3 through the signal receiving device 4, the control platform 3 compares the test data of the sensors to be detected with the control command of the control platform 3 to obtain the error value of the sensors to be detected, and the accuracy test is completed by judging whether the error value is within the set threshold value.
Through the overall analysis of the technical scheme, the design idea and the test 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 workers is reduced, and the test efficiency can be improved by more than 60%; the stability of the product is improved, the reliability of engineering application is guaranteed, the manual debugging cost is reduced, and the effects of cost reduction and efficiency improvement are achieved.
The specific working process comprises the following steps:
the control platform 3 sets parameters such as the rotation speed, the rotation angle, the test times, the 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 the rotation on the course angle, the horizontal servo motor 71 controls the rotation on the pitch angle, and the two servo motors together complete the rotation of the roll angle. The power lines and the signal lines of the sensors to be tested are gathered together through the fixed terminal row by arranging the sensors to be tested on the fixed plate 2, four lines including DC24+, DC24-, RS-485+ and RS-485 are led out uniformly 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, if the scheme of reserving 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, and the output of the test data of the sensors to be tested is realized. The signal receiving device 4 collects data of the sensor to be tested and transmits the data to the control platform 3, the control platform 3 compares the data collected by the sensor to be tested with a control command of the control platform 3 to obtain an error value of the sensor to be tested, and the precision test is completed by judging whether the error value is within a set threshold value.
Claims (9)
1. The tool for testing the precision of the disconnecting link position sensor is characterized by comprising a fixing plate and a rotary frame, wherein the fixing plate is used for fixedly arranging the sensor to be tested; the fixed plate is rotatably assembled on the revolving frame, and the rotating axis is arranged in the horizontal direction and is parallel to the surface of the fixed plate.
2. The disconnecting link position sensor precision testing tool according to claim 1, wherein the rotary frame comprises two oppositely arranged support arms, and the fixing plate is arranged between the support arms; the revolving frame is supported through a rotating shaft at the bottom.
3. The disconnecting link position sensor accuracy testing tool according to claim 2, further comprising a first motor, wherein the first motor is fixedly arranged on one support arm of the rotating frame, and the first motor drives the fixing plate to rotate along a horizontal axis.
4. The disconnecting link position sensor precision testing tool 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; and the power supply circuit and the sampling circuit of the sensor to be tested are connected out of the revolving frame through the first conductive slip ring.
5. The disconnecting link position sensor precision testing tool according to claim 4, further comprising a second motor, wherein the second motor drives the rotating frame to rotate along the horizontal direction.
6. The disconnecting link position sensor precision testing tool according to claim 5, wherein a second conductive slip ring is arranged at a rotating shaft at the bottom of the turret, the second conductive slip ring comprises a stator and a rotor, the stator is fixed on a supporting structure of the turret, and the rotor rotates with the turret; and the power supply circuit and the sampling circuit of the sensor to be tested are connected out of the revolving frame through the second conductive slip ring.
7. The disconnecting link position sensor precision testing tool according to claim 5, wherein a through hole is formed in the bottom of the rotary frame, and the through hole is used for leading a power supply line and a sampling line of a sensor to be tested out of the testing tool; 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 manner.
9. The disconnecting link position sensor precision testing tool according to claim 8, wherein the controller is connected with the first motor and the second motor in a control mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122410486.4U CN217604935U (en) | 2021-09-30 | 2021-09-30 | Disconnecting link position sensor precision testing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122410486.4U CN217604935U (en) | 2021-09-30 | 2021-09-30 | Disconnecting link position sensor precision testing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217604935U true CN217604935U (en) | 2022-10-18 |
Family
ID=83560534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122410486.4U Active CN217604935U (en) | 2021-09-30 | 2021-09-30 | Disconnecting link position sensor precision testing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217604935U (en) |
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2021
- 2021-09-30 CN CN202122410486.4U patent/CN217604935U/en active Active
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20230511 Address after: South East of Pingdingshan city in Henan province 467001 No. 22 Patentee after: HENAN PING GAO ELECTRIC Co.,Ltd. Patentee after: Guangzhou Pinggao Electric Power Technology Co.,Ltd. Address before: South East of Pingdingshan city in Henan province 467001 No. 22 Patentee before: HENAN PING GAO ELECTRIC Co.,Ltd. |