CN216816803U

CN216816803U - Device capable of measuring number of turns of coil with opening air gap

Info

Publication number: CN216816803U
Application number: CN202220145615.3U
Authority: CN
Inventors: 不公告发明人
Original assignee: Beijing Passion Technology Co ltd
Current assignee: Beijing Passion Technology Co ltd
Priority date: 2022-01-19
Filing date: 2022-01-19
Publication date: 2022-06-24
Anticipated expiration: 2032-01-19

Abstract

The utility model discloses a device capable of measuring the number of turns of a coil with an open air gap, which comprises an insulating support plate, at least one standard current sensor, a coil driver to be measured, a Hall element, a microammeter and an industrial personal computer, wherein a power interface, a coil access interface to be measured, a primary side current input interface and at least one standard current sensor connection interface are arranged on the insulating support plate, one end of the coil to be measured is connected with the coil driver to be measured, the Hall element is arranged in the air gap of the coil to be measured and is connected with the coil driver to be measured, the other end of the coil to be measured is connected with the standard current sensor and the microammeter, the standard current sensor, the primary side current input interface and the coil driver to be measured are all electrically connected with the industrial personal computer. The device capable of measuring the number of turns of the coil with the opening air gap with the structure has the advantages that the number of turns is calculated through the industrial personal computer by detecting the current difference value generated by the coil to be detected and the standard current sensor, and the detection precision is improved.

Description

Device capable of measuring number of turns of coil with opening air gap

Technical Field

The utility model relates to the technical field of coil detection, in particular to a device capable of measuring the number of turns of a coil with an open air gap.

Background

At present, for the turn number measurement of a coil, an electromagnetic induction principle Is generally adopted, a current signal with a certain frequency Is introduced into a magnetic core coil to be measured, the magnitude of a secondary current Is measured from the secondary side of the coil, and according to the electromagnetic induction principle of a transformer, the ratio of the magnitude of the secondary current signal on the secondary side of the coil to the magnitude of a primary side current input by a single turn Is the reciprocal of the turn number, namely N Is Ip/Is, N Is the turn number, Ip Is the primary side input current, and Is the secondary current on the secondary side of the coil. The value of the number of turns of the coil can be measured and displayed through the principle. However, the method can only be used for measuring the number of turns of the closed magnetic core, but not for measuring the number of turns of the coil with the open air gap, because the leakage inductance of the magnetic core with the open air gap is large, the output and the input of the secondary current of the coil secondary side do not follow the inverse relation of the turn ratio any more, the error is very large, and the number of turns of the coil cannot be accurately measured.

There is therefore a need for a device that can measure the number of turns of a core coil with an open air gap.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a device capable of measuring the number of turns of a coil with an open air gap.

In order to achieve the purpose, the utility model provides a device capable of measuring the turn number of a coil with an open air gap, which comprises an insulating support plate, at least one standard current sensor, a coil driver to be measured, a Hall element, a microammeter and an industrial personal computer,

the micro-ampere meter comprises a standard current sensor, a micro-ampere meter and an industrial personal computer, wherein the standard current sensor, the micro-ampere meter and the industrial personal computer are all fixed on an insulating carrier plate, a power supply interface, a coil to be tested access interface, a primary side current input interface and at least one standard current sensor connection interface are arranged on the insulating carrier plate, one end of a coil to be tested is connected with a coil driver to be tested, a Hall element is arranged in an air gap of the coil to be tested and is connected with the coil driver to be tested, the other end of the coil to be tested is connected with the standard current sensor and the micro-ampere meter, the standard current sensor, the primary side current input interface and the coil driver to be tested are all electrically connected with the industrial personal computer.

Preferably, the four corners of insulating support plate are provided with rag screw, insulating support plate is phenolic resin or ya keli material.

Preferably, the standard current sensors are arranged in parallel, the number of turns of the coils of the three standard current sensors is 1000 turns, 2000 turns and 5000 turns, the standard current sensor connection interface comprises a common interface, a first interface, a second interface and a third interface, and the first interface, the second interface and the third interface are respectively connected with the three standard current sensors.

Preferably, the industrial personal computer is provided with a liquid crystal display panel.

Therefore, the device capable of measuring the number of turns of the coil with the open air gap in the structure is adopted, the closed-loop Hall current sensor is formed by the Hall element, the coil driver to be measured and the coil to be measured, the difference between the secondary current generated by the closed-loop Hall current sensor and the standard current of the standard current sensor is displayed through the microammeter, the microammeter is communicated with the industrial personal computer to transmit the difference value of the currents to the industrial personal computer for calculation, the number of turns of the coil to be measured is rapidly and accurately calculated, the magnetic core air gap leakage cannot be limited by the electromagnetic induction principle, and the detection precision is improved.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

FIG. 1 is a schematic structural diagram of an apparatus capable of measuring the number of turns of a coil with an open air gap according to the present invention;

fig. 2 is a schematic diagram of the principle of the device capable of measuring the number of turns of the coil with the open air gap according to the utility model.

Reference numerals

1. An insulating carrier plate; 11. anchor screws; 12. a primary current input interface; 13. a common interface; 14. a first interface; 15. a second interface; 16. a third interface; 17. the coil to be tested is connected into the interface; 18. a power interface; 2. a standard current sensor; 3. a coil driver to be tested; 4. microammeters; 5. an industrial personal computer; 6. a Hall element; 7. and (6) a coil to be tested.

Detailed Description

Examples

Fig. 1 is a schematic diagram of a structure of a device capable of measuring the number of turns of a coil with an open air gap, fig. 2 is a schematic diagram of a principle of the device capable of measuring the number of turns of the coil with the open air gap, and as shown in the figure, the device capable of measuring the number of turns of the coil with the open air gap comprises an insulating carrier plate 1, at least one standard current sensor 2, a coil driver to be measured 3, a hall element 6, a microammeter 4 and an industrial personal computer 5. The four corners of the insulating carrier plate 1 are provided with foundation screws 11 to facilitate the raising of the insulating carrier plate 1, and the insulating carrier plate 1 is made of phenolic resin (bakelite material) or acrylic material. Microampere meter 4 and industrial computer 5 all are fixed in on insulating support plate 1, standard current sensor 2 Is provided with three side by side, the coil turn number of three standard current sensor 2 Is 1000 circles respectively, 2000 circles and 5000 circles, standard current sensor 2 connects the interface and includes sharing interface 13, first interface 14, second interface 15 and third interface 16 are connected with three standard current sensor 2 respectively, choose the closest standard current sensor 2 for coil 7 that awaits measuring of different turns, the output current of standard current sensor 2 Is 1. The insulating carrier plate 1 is further provided with a power supply interface 18, a coil access interface 17 to be tested and a primary side current input interface 12, the primary side current input interface 12 is used for connecting primary side output current (Ip), the coil access interface 17 to be tested is used for connecting the coil 7 to be tested, and the power supply interface 18 provides 15V power supply voltage for the insulating carrier plate 1. One end of a coil to be detected 7 is connected with the coil driver to be detected 3, the Hall element 6 is arranged in an air gap of the coil to be detected 7 and is connected with the coil driver to be detected 3, the other end of the coil to be detected 7 is connected with the standard current sensor 2 and the microammeter 4, the standard current sensor 2, the primary current input interface 12 and the coil driver to be detected 3 are electrically connected with the industrial personal computer 5. The microammeter 4 Is used for displaying a difference value (delta Is) between the secondary current of the coil 7 to be measured and the standard current of the standard current sensor, and the industrial personal computer 5 Is provided with a liquid crystal display panel and used for displaying results on site.

The industrial personal computer 5 has the calculation formula as follows: n ═ Ip/(. DELTA.IS + Is1), where the number of turns of the coil 7 to be measured Is N, the primary current Is Ip, the current value of the standard current sensor 2 Is1, and the difference between the secondary current of the coil 7 to be measured and the standard current of the standard current sensor 2 Is. DELTA.IS.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the utility model without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a can measure device that takes open air gap coil turns which characterized in that: comprises an insulating carrier plate, at least one standard current sensor, a coil driver to be tested, a Hall element, a microammeter and an industrial personal computer,

2. The device of claim 1, wherein the open air gap coil turns count is measured by: the four corners of insulating support plate are provided with rag screw, insulating support plate is phenolic resin or ya keli material.

3. The device of claim 1, wherein the open air gap coil turns count is measured by: the standard current sensor is provided with three standard current sensors in parallel, the number of turns of a coil of each standard current sensor is 1000 turns, 2000 turns and 5000 turns, the standard current sensor connecting interface comprises a shared interface, a first interface, a second interface and a third interface, and the first interface, the second interface and the third interface are respectively connected with the three standard current sensors.

4. The device of claim 1, wherein the open air gap coil turns count is measured by: the industrial personal computer is provided with a liquid crystal display panel.