CN213240377U - High-precision AC/DC arc testing device - Google Patents
High-precision AC/DC arc testing device Download PDFInfo
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- CN213240377U CN213240377U CN202020971708.2U CN202020971708U CN213240377U CN 213240377 U CN213240377 U CN 213240377U CN 202020971708 U CN202020971708 U CN 202020971708U CN 213240377 U CN213240377 U CN 213240377U
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Abstract
The utility model discloses a high accuracy alternating current-direct current electric arc testing arrangement, including backplate and base, the fixed mounting socket on the backplate, the socket connection power, fixed mounting servo motor on the base, servo motor's output shaft passes through the shaft coupling and is connected with ball screw one end, ball screw's the other end is installed on the lead screw supporting seat, the last nut seat of installing of ball screw, the fixed mounting slider on the nut seat, the fixed mounting plug on the slider, the plug aligns with the socket to guarantee that the plug can insert the socket along the lead screw removal. The beneficial effects of the utility model are that, easy operation, application scope is wide.
Description
Technical Field
The utility model relates to a fault arc detection field, especially a high accuracy alternating current-direct current arc testing arrangement.
Background
In daily life, household appliances are powered on and powered off through the plugging and unplugging actions of a plug and a socket, visual sparks with different brightness can be generated between the plug and the socket in the power-on and power-off process, potential safety hazards such as fire disasters can be caused by the sparks, and life and property safety of people is affected. Through experimental research, the key factors influencing arc discharge are determined, the performance of the socket can be improved by using the structure and materials of the socket, the safety of the socket is improved, and potential safety hazards are reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem, a high accuracy alternating current-direct current arc testing arrangement has been designed.
The technical scheme of the utility model is that the high-precision AC/DC arc testing device comprises a back plate and a base, wherein a socket is fixedly arranged on the back plate and is connected with a power supply, a servo motor is fixedly arranged on the base, an output shaft of the servo motor is connected with one end of a ball screw through a coupling, the other end of the ball screw is arranged on a screw support seat, a nut seat is arranged on the ball screw,
a sliding block is fixedly arranged on the nut seat, a plug is fixedly arranged on the sliding block, the plug is aligned with the socket, and the plug can be inserted into the socket after moving along the screw rod;
the high-speed camera is connected with the industrial personal computer and transmits the acquired electric spark images to the industrial personal computer;
a Hall current sensor is arranged on a live wire of the socket power supply, and Hall voltage sensors are arranged between a plug and zero and live wires of the socket;
the Hall current sensor and the Hall voltage sensor are connected with the signal input of the high-speed data acquisition card, the Hall current sensor and the Hall voltage sensor transmit signals to the high-speed data acquisition card, and the output of the high-speed data acquisition card is connected with the signal input of the industrial personal computer.
The industrial personal computer adopts Labview as an interface programming language and designs a human-computer interaction interface of the wall socket arc testing device.
And a power supply voltage and phase angle calculation model at the plug starting moment based on real-time socket power supply voltage acquisition data is established in an interface of the industrial personal computer.
The power supply voltage and phase angle calculation model at the plug-pull starting moment based on the real-time socket power supply voltage collected data is used for obtaining the frequency, amplitude and effective value of the power supply voltage by utilizing single-frequency measurement in an Express-VI module of a labview system.
And a plug-pull starting cooperative control model based on the socket power supply voltage and the relative distance between the plug and the socket is established in the interface of the industrial personal computer.
The calculation model of the plug-pull starting cooperative control based on the socket power supply voltage and the relative distance between the plug and the socket is that an alternating current arc test is taken as an example, s is equal to v x t, wherein s is the movement distance of the plug inserted into the socket, v is the movement speed of the plug inserted into the socket, when the power supply voltage is detected to reach a target voltage, the motor is controlled to start to move, and in order to enable the plug inserted into the socket to be just the target voltage moment, t is a positive integer multiple of an alternating current power supply period of 0.02 s.
The plug is connected with an electric load.
The servo motor is connected with an alternating current power supply through a driver, and the signal input of the driver is connected with the signal output of the controller.
Advantageous effects
Utilize the utility model discloses a high accuracy alternating current-direct current arc testing arrangement of technical scheme preparation, its advantage as follows:
1. the method can test which contact is most violently burnt away from the arc under different voltages, and provides data support for providing a scheme of inhibiting the arc;
2. the device is simple to operate, is suitable for various different voltage conditions, can test the household socket, and is also suitable for sockets under certain working conditions or higher-voltage sockets;
3. the device can collect rich information including arc voltage, current, arc picture and power supply voltage fluctuation during arc combustion, and is beneficial to data accumulation and theoretical analysis.
Drawings
Fig. 1 is a schematic structural diagram of a high-precision ac/dc arc testing device according to the present invention;
fig. 2 is a schematic diagram of the high-precision ac/dc arc testing device of the present invention;
fig. 3 is an arc voltage and current detection schematic diagram of the high-precision ac/dc arc testing device of the present invention;
in the figure, 1, a back plate; 2. a base; 3. a socket; 4. a servo motor; 5. a coupling; 6. a ball screw; 7. a screw rod supporting seat; 8. a nut seat; 9. a plug; 10. a high-speed camera; 11. a Hall current sensor; 12. a Hall voltage sensor; 13. a slider; 14. a load; 15. a high-speed data acquisition card; 16. and an industrial personal computer.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings, as shown in fig. 1-a, the invention of the present application is characterized in that a high precision ac/dc arc testing device comprises a back plate 1 and a base 2, a socket 3 is fixedly installed on the back plate, the socket is connected with a power supply, a servo motor 4 is fixedly installed on the base, an output shaft of the servo motor is connected with one end of a ball screw 6 through a shaft coupling 5, the other end of the ball screw is installed on a screw supporting seat 7, a nut seat 8 is installed on the ball screw,
a sliding block 13 is fixedly arranged on the nut seat, a plug 9 is fixedly arranged on the sliding block, the plug is aligned with the socket, and the plug can be inserted into the socket by moving along the screw rod;
the high-speed camera is connected with the industrial personal computer 16 and transmits the acquired electric spark images to the industrial personal computer;
a Hall current sensor 11 is arranged on a live wire of a socket power supply, and Hall voltage sensors 12 are arranged between a plug and zero and live wires of a socket;
the Hall current sensor and the Hall voltage sensor are connected with the signal input of the high-speed data acquisition card 15, the Hall current sensor and the Hall voltage sensor transmit signals to the high-speed data acquisition card, and the output of the high-speed data acquisition card is connected with the signal input of the industrial personal computer.
The electronic device adopted by the technical scheme comprises:
a driver and a controller matched with the servo motor machine;
a high-speed camera: selecting which type of high-speed camera;
in the implementation process of the technical scheme, a person in the art needs to connect all the electrical components in the present application with a power supply adapted to the electrical components through a wire, and should select an appropriate controller according to actual conditions to meet control requirements, and specific connection and control sequence.
In the technical scheme, an industrial personal computer is used as a monitoring center, Labview is used as an interface programming language, a man-machine interaction interface of the wall socket arc testing device is designed, a power supply voltage and phase angle calculation model at the plug starting moment based on real-time socket power supply voltage acquisition data is established, a plug starting cooperative control model based on the socket power supply voltage and the relative distance between a plug and a socket is established, and a test working time sequence is designed; the plugging and unplugging actions of the plug and the socket are executed through the combination of the servo motor, the lead screw and the sliding block, and the plugging and unplugging process simulation is realized; meanwhile, the high-speed data acquisition board card is used for acquiring the electric signal change in the plugging and unplugging process, so that the subsequent research and operation are realized.
In the technical scheme, the stroke of the motor is controlled by adjusting the revolution of the motor to realize the controllability of the arc gap, a stable arc combustion process can be displayed, the arc starting, combustion and arc extinguishing processes of the arc under different gaps and different voltages can be researched by adjusting the arc gap and the voltage level, and the situations of arc growth and the like can be simultaneously photographed and researched by a high-speed camera; the plug inserting and pulling speed is changed by adjusting the rotating speed of the motor, so that the influence of different inserting and pulling speeds on the arcing process is researched; through the voltage value and the phase angle detection value thereof, the voltage, the current and the image of the arc are synchronously triggered and recorded, and the plug stroke and the power supply voltage are cooperatively controlled, so that the alternating current power supply reaches the specified plugging position when the phase angle is specified.
Preferably, the industrial personal computer adopts Labview as an interface programming language and designs a human-computer interaction interface of the wall socket arc testing device.
As a preferred scheme, further, a power supply voltage and phase angle calculation model at the plug starting time based on real-time socket power supply voltage acquisition data is established in an interface of the industrial personal computer; a power supply voltage and phase angle calculation model at the plug-pull starting moment based on real-time socket power supply voltage collected data is used for obtaining the frequency, amplitude and effective value of the power supply voltage by utilizing single-frequency measurement in an Express-VI module of a labview system.
Preferably, the model for establishing the plug-in and plug-out cooperative control based on the socket power supply voltage and the relative distance between the plug and the socket in the interface of the industrial personal computer is that an alternating current arc test is taken as an example, s-v-t, wherein s is the distance of the plug inserted into the socket and v is the movement speed of the plug inserted into the socket, when the power supply voltage is detected to reach a target voltage, the motor is controlled to start to move, and in order that the time when the plug is inserted into the socket is just the target voltage, t is a positive integer multiple of 0.02s of the alternating current power supply period.
Preferably, the plug is connected to an electric load.
Preferably, the servo motor is connected with an alternating current power supply through a driver, and a signal output of a controller of the servo motor is connected with a signal input of the driver.
The technical scheme of the application comprises the following testing processes:
under the conditions of alternating current of 220V and phase angle of 30 degrees, the plug and socket plugging arc testing steps are as follows:
(1) checking whether the equipment is intact, safely starting an industrial personal computer, and checking whether a labview interface can normally run;
(2) taking down the camera cover, testing the function of the camera, and properly adjusting the focal length of the camera to enable the imaging to be clear;
(3) and (3) switching on a motor power supply, adopting an industrial personal computer to control the motor, testing whether the action of the motor is normal or not, and testing whether the starting, stopping and phase starting functions of the motor are normal or not.
(4) And (5) switching on the alternating current socket power supply, and testing whether the output value of the power supply is normal.
(5) Pressing a start button on an operation interface of the industrial personal computer, and enabling the motor to travel to a specified position and stop; clicking to set a target phase angle, pressing a forward button on an operation interface, and starting an insertion process until the socket is completely inserted; in the process of inserting the plug into the socket, measuring and recording arc voltage, current values and arc images, and respectively outputting the arc voltage, the current values and the arc images as documents in txt and mp4 formats;
(6) after being electrified for a period of time (not less than 30s), pressing a back button on an operation interface to start a pulling-out process; and in the process that the plug is pulled out of the socket to a specified position, the arc voltage, the current value and the arc image are measured and recorded, and the arc voltage, the current value and the arc image are respectively output as files in txt and mp4 formats.
(7) Standing for 2 minutes until the system returns to a cold state.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.
Above-mentioned technical scheme has only embodied the utility model discloses technical scheme's preferred technical scheme, some changes that this technical field's technical personnel probably made to some parts wherein have all embodied the utility model discloses a principle belongs to within the protection scope of the utility model.
Claims (3)
1. A high-precision alternating current-direct current arc testing device comprises a back plate (1) and a base (2), wherein a socket (3) is fixedly installed on the back plate and connected with a power supply, a servo motor (4) is fixedly installed on the base, an output shaft of the servo motor is connected with one end of a ball screw (6) through a coupler (5), the other end of the ball screw is installed on a screw support seat (7), and a nut seat (8) is installed on the ball screw,
a plug (9) is fixedly arranged on the nut seat, is aligned with the socket and ensures that the plug can be inserted into the socket by moving along the screw rod;
the high-speed camera is connected with the industrial personal computer (16) and transmits the acquired electric spark images to the industrial personal computer;
a Hall current sensor (11) is arranged on a live wire of the socket power supply, and Hall voltage sensors (12) are arranged between a plug and zero and live wires of the socket;
the Hall current sensor and the Hall voltage sensor are connected with the signal input of a high-speed data acquisition card (15), the Hall current sensor and the Hall voltage sensor transmit signals to the high-speed data acquisition card, and the output of the high-speed data acquisition card is connected with the signal input of an industrial personal computer.
2. A high accuracy ac-dc arc testing device according to claim 1, wherein said plug is connected to an electrical load (14).
3. The high accuracy AC-DC arc testing device according to claim 1, wherein said servo motor is connected to an AC power source through a driver, and a signal input of said driver is connected to a signal output of said controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020971708.2U CN213240377U (en) | 2020-06-01 | 2020-06-01 | High-precision AC/DC arc testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020971708.2U CN213240377U (en) | 2020-06-01 | 2020-06-01 | High-precision AC/DC arc testing device |
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| CN213240377U true CN213240377U (en) | 2021-05-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111537852A (en) * | 2020-06-01 | 2020-08-14 | 宁波公牛电器有限公司 | High-precision AC/DC arc testing device |
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- 2020-06-01 CN CN202020971708.2U patent/CN213240377U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111537852A (en) * | 2020-06-01 | 2020-08-14 | 宁波公牛电器有限公司 | High-precision AC/DC arc testing device |
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