CN219201889U - Trigger controller based on rogowski coil - Google Patents

Abstract

The utility model discloses a trigger controller based on a rogowski coil, which comprises an auxiliary power supply, a rogowski coil integrator, a main control unit, a test product and a rogowski coil, wherein the output end of the auxiliary power supply is connected with the main control unit and outputs 24VDC to the main control unit; according to the utility model, the Roche coil is sleeved outside the circuit of the sample, so that the current can be accurately detected, the operations such as closing are not needed, the closing time is accurate, the response time is greatly shortened, and the trigger controller based on the Roche coil can output a trigger signal with extremely small response time, so that the accuracy is greatly improved.

Description

Trigger controller based on rogowski coil

Technical Field

The utility model relates to the technical field of electronic information, in particular to a trigger controller based on a rogowski coil.

Background

In the intelligent fuse testing process, a trigger signal is required to be sent to a sample by appointed current to fuse the sample, the time required for rising to the appointed current is obtained through an expected waveform before an experiment, and the trigger signal is sent at the same time after the formal experiment starts to fuse the sample;

however, in the large-current experiment, the loop needs to be switched on through the large-scale plastic shell, the switching-on time of the plastic shell is not fixed each time, the time for sending out the trigger signal is different from that in the expected experiment, in detail, the current intelligent fuse experiment is firstly carried out the expected experiment, the circuit is triggered according to the time point of the expected wave corresponding to the expected level, and as the mechanical switch is mostly adopted for switching-on of the loop, the switching-on time is uncertain, and the triggering is inaccurate.

Disclosure of Invention

The utility model aims to provide a trigger controller based on a rogowski coil, so as to solve the defects in the technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a trigger controller based on rogowski coil, includes auxiliary power supply, rogowski coil integrator, main control unit, test article and rogowski coil, main control unit is connected to auxiliary power supply's output, the test article is connected to main control unit's output so that main control unit is at prescribed trigger time to the input trigger current of test article, the circuit of test article is overlapped outward to the wire line has the rogowski coil, the signal of telecommunication that gets when the rogowski coil will examine the circuit of test article is sent to the rogowski coil integrator, main control unit is connected to the output of rogowski coil integrator, install the singlechip in the main control unit.

As a preferable scheme of the utility model, the input end of the main control unit is connected with the PLC module, and the trigger current and the trigger time are set through the PLC module.

As a preferable scheme of the utility model, the output end of the PLC module is connected with the main control unit through 485 communication to set the trigger current and the trigger time.

As a preferable embodiment of the present utility model, the test substance is a fuse.

As a preferred embodiment of the present utility model, the main control unit is connected to the rogowski coil integrator through a BNC bend, so that the main control unit receives a voltage output signal of the rogowski coil integrator.

As a preferable scheme of the utility model, the auxiliary power supply provides 220V direct current from an external power supply, the auxiliary power supply outputs 24V direct current to the main control unit, and the main control unit 3 reduces the voltage value 24V to 5V, then reduces the voltage value 5V to 3.3V and then transmits the reduced voltage value to the internal singlechip.

Compared with the prior art, the utility model has the beneficial effects that: the Roche coil is sleeved outside the circuit of the sample, so that the current can be accurately detected, the operations such as closing are not needed, the closing time is accurate, the response time is greatly shortened, the trigger controller based on the Roche coil can output a trigger signal with extremely small response time, and the accuracy is greatly improved.

Drawings

FIG. 1 is a schematic illustration of the connection of parts according to the present utility model;

fig. 2 is a flow chart of the procedure of the present utility model.

In the figure: 1. an auxiliary power supply; 2. a rogowski coil integrator; 3. a main control unit; 4. a PLC module; 5. a test article; 6. rogowski coil.

Detailed Description

In order to make the explanation and the description of the technical solution and the implementation of the present utility model clearer, several preferred embodiments for implementing the technical solution of the present utility model are described below.

The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses. It should be understood that throughout the drawings, the same or similar reference numerals indicate the same or similar parts and features. The drawings merely schematically illustrate the concepts and principles of embodiments of the disclosure and do not necessarily illustrate the specific dimensions and proportions of the various embodiments of the disclosure. Specific details or structures of embodiments of the present disclosure may be shown in exaggerated form in particular drawings, various publications, patents and published patent specifications cited herein are incorporated herein by reference in their entirety and below are set forth in detail the embodiments of the present utility model, which are obviously only a few embodiments of the present utility model.

In the description of the present utility model, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance unless explicitly specified or limited otherwise; the term "plurality" means two or more, unless specified or indicated otherwise; the terms "coupled," "secured," and the like are to be construed broadly, and may be used, for example, in a fixed or removable connection; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, it should be understood that the terms "upper," "lower," "left," "right," and the like in the embodiments of the present application are described in terms of angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In the context of this document, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on the other element or be indirectly on the other element through intervening elements.

Examples

Referring to fig. 1-2 of the specification, the embodiment of the utility model provides a trigger controller based on rogowski coil, which comprises an auxiliary power supply 1, a rogowski coil integrator 2, a main control unit 3, a sample 5 and a rogowski coil 6, an external cabinet system provides 220VDC direct current for the auxiliary power supply 1, an output end of the auxiliary power supply 1 is connected with the main control unit 3 and outputs 24VDC direct current to the main control unit 3, an output end of the main control unit 3 is connected with the sample 5 so that the main control unit 3 inputs trigger current to the sample 5 at a specified trigger time, the rogowski coil 6 is sleeved on the line of the sample 5, an electric signal obtained when the rogowski coil 6 detects the line of the sample 5 is sent to the rogowski coil integrator 2, the rogowski coil integrator 2 converts the electric signal into a digital signal, an output end of the rogowski coil integrator 2 is connected with the main control unit 3 and outputs a voltage signal to the main control unit 3, a singlechip is arranged in the main control unit 3, a voltage value output by the rogowski coil integrator 2 is calculated by using an AD conversion function carried by the singlechip, a trigger current set value output by the main control unit 3 is compared with a trigger current set value when the trigger current reaches a set value of the set value, for setting voltage V is equal to a set value of the set voltage V8 when the set voltage V is set to the set at the trigger current is 8V 2 when the set voltage is set at the trigger current is 8 and is set at the trigger current is 8 when the set and is 8 is output when the set is set;

when the main control unit inputs 24VDC direct current, specific index parameters in the trigger controller are as follows:

test current range: 0-30KA;

input voltage range: 20V-28VDC;

minimum trigger delay: 100uS;

and wherein the hall sensor may replace a rogowski coil as a sensor to sense the trigger current;

compared with the currently set trigger equipment, the technology can detect loop current, has accurate trigger level and high response speed, compares and outputs the detected current again, and has the average maximum response speed of 50us.

Further, the main control unit 3 is connected with the PLC module 4 and sets the trigger current and the trigger time through the PLC module 4, the output end of the PLC module 4 is connected with the main control unit 3 through 485 communication, and the trigger current and the delay trigger time can be set according to experimental requirements through 485 communication, for example, the trigger is required to be triggered by 10us when the loop current reaches 30ka delay.

Further, the sample 5 is a fuse.

Further, the main control unit 3 is connected with the rogowski coil integrator 2 through a BNC bend, so that the main control unit 3 receives a voltage output signal of the rogowski coil integrator 2.

Further, the auxiliary power supply 1 provides 220V direct current from an external power supply, the external power supply is an external cabinet system, the auxiliary power supply 1 outputs 24V direct current to the main control unit 3, the main control unit 3 reduces the voltage value 24VDC to 5VDC, a model LM2575S-5.0/TR DC-DC power supply chip is selected in the main control unit 3 to convert the 24VDC to 5VDC, then the voltage value 5V is reduced to 3.3V, then the singlechip in the main control unit 3 is powered, the voltage value 5V is reduced to 3.3V by using a model LM1117F-3.3 linear voltage stabilizer, and the linear voltage stabilizer has the advantages of small ripple and high low-voltage work efficiency.

When in use:

after power-on, firstly carrying out hardware initialization, then initializing GPIO,485, ADC and interrupted program functions, after the software and hardware initialization is finished, installing an indicator lamp on a main control unit, flashing the indicator lamp if the program runs normally, and reinitializing if the program runs abnormally, then setting trigger current for the main control unit 3 by a PLC module 4 through 485 communication, recording a current set value, after the Rogowski coil 6 runs, transmitting a signal to the main control unit 3 through a BNC port by a Rogowski coil integrator 2 so that the main control unit 3 continuously reads the voltage signal of the Rogowski coil 6, obtaining real-time loop current and comparing, and outputting the trigger signal when the loop current is larger than or equal to the set value, so that a test product 5 is fused; if the set value is smaller than the set value, the detection comparison is continued.

It should be noted that the above-mentioned embodiments are merely examples of the present utility model, and it is obvious that the present utility model is not limited to the above-mentioned embodiments, and many similar variations are possible. All modifications attainable or obvious from the present disclosure set forth herein should be deemed to be within the scope of the present disclosure.

The foregoing is merely illustrative of the preferred embodiments of the present utility model, and is not intended to limit the scope of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (6)

1. A trigger controller based on rogowski coil, characterized in that: including auxiliary power supply (1), rogowski coil integrator (2), main control unit (3), test article (5) and rogowski coil (6), main control unit (3) is connected to the output of auxiliary power supply (1), test article (5) are connected to the output of main control unit (3) so that main control unit (3) is at prescribed trigger time to input trigger current to test article (5), the circuit overcoat of test article (5) has rogowski coil (6), the signal of telecommunication that gets when rogowski coil (6) will examine the circuit of test article (5) is sent to rogowski coil integrator (2), main control unit (3) is connected to the output of rogowski coil integrator (2), install the singlechip in main control unit (3).

2. A rogowski coil based trigger controller according to claim 1, characterized in that: the input end of the main control unit (3) is connected with the PLC module (4) and sets trigger current and trigger time through the PLC module (4).

3. A rogowski coil based trigger controller according to claim 2, characterized in that: the output end of the PLC module (4) is connected with the main control unit (3) through 485 communication to set trigger current and trigger time.

4. A rogowski coil based trigger controller according to claim 1, characterized in that: the test article (5) is a fuse.

5. A rogowski coil based trigger controller according to claim 1, characterized in that: the main control unit (3) is connected with the Rogowski coil integrator (2) through a BNC bent port, so that the main control unit (3) receives a voltage output signal of the Rogowski coil integrator (2).

6. A rogowski coil based trigger controller according to claim 1, characterized in that: the auxiliary power supply (1) is used for providing 220V direct current by an external power supply, the auxiliary power supply (1) outputs 24V direct current to the main control unit (3), and the main control unit (3) reduces the voltage value of 24V to 5V, then reduces the voltage value of 5V to 3.3V and then transmits the reduced voltage value to the internal singlechip.

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