KR102213699B1 - A sensor unit of non-destructive inspection system - Google Patents

Abstract

PC (10) having processing software as an application (11), driver (DMS) engine (20), which is a driver and amplifier mounted as a board on the PC (10), is installed in a spaced measurement location and fits the shape of the object to be measured. Having a sensor unit 30 consisting of a plurality of sensor units (S1, S2, S3, ..Sn) fixedly disposed on the frame, the PC 10 and the driver (DMS) engine 20 and the sensor The unit 30 is configured by being connected as a mutual RS communication cable 40, and the sensor units S1, S2, S3, ..Sn are assigned addresses according to the settings of the application 11 of the PC 10. In the sensor unit (S1, S2, S3,..Sn) in the non-destructive inspection system for measuring the sensor unit (S1, S2, S3,..Sn);
The sensor units (S1, S2, S3, ..Sn) are each independently a sensor core 31, a switching unit 32 signal-connected to the sensor core 31, and the signal of the switching unit 32 In accordance with the built-in microcomputer 32, which controls the EPROM 33 to which the respective ID channel address is input and stored, the EPROM 33 of the channel according to the settings of the application 11 of the PC 10 Selectively drive only the sensors (S1, S2, S3, ..Sn) corresponding to the address numbers stored in the device to correspond to the size and shape of the object to be measured. It is characterized in that it is possible to measure controlled in response to the characteristics of the object to be measured by changing each measurement characteristic of S3,..Sn).

Description

A sensor unit of non-destructive inspection system

The present invention relates to a sensor unit of a non-destructive inspection system, and more particularly, a sensor unit having a configuration capable of improving inspection efficiency and accuracy by having a plurality of sensors, and a sensor unit of a non-destructive inspection system communicating with the sensor unit It is about.

Non-destructive inspection equipment is a widely used industrial measuring equipment to inspect internal structures or cracks of steel materials, structures, and products in various industrial sites such as machinery, shipbuilding, and civil engineering.

As such a non-destructive inspection apparatus, radiographic inspection, ultrasonic inspection, magnetic inspection, magnetic leakage, electromagnetic induction inspection, and the like are known.

Among the various non-destructive inspection methods described above, the magnetic leakage inspection method is the most widely applied inspection technique because it can maintain a certain quality of the output signal even if the posture, vibration, or movement speed of the sensor system is unstable.

The sensor device for magnetic leakage inspection using eddy current is basically installed between two permanent magnets, a yoke that connects the permanent magnets to provide a magnetic path, and the permanent magnet. It is composed of a detection sensor such as a Hall sensor that measures the density of the magnetic field leaking from.

The Hall sensor is an element used to determine the direction and magnitude of a magnetic field, and generates an output proportional to the strength of the magnetic field.

Conventionally, non-destructive testing devices or systems of various configurations have been devised to perform this kind of self-leakage test.

As one of the sources, as shown in Korean Patent Laid-Open No. 10-2016-0013750 as shown in FIG. 1, a schematic diagram of a conventional non-destructive inspection system as an embodiment is shown.

Referring to FIG. 1, the non-destructive testing device using the electromagnetic induction sensor unit is composed of a probe and a body 102, and a measurer carries a fatigue test device, and transmits a magnetic flux line while scanning an inspection area using a probe and receives And the main body 102 displays information on the magnetic flux line, and determines whether the inspection site is normal or not,

The system includes an acceleration sensor 201 for measuring the shaking of a person's hand and an electromagnetic induction coil therein, and an electromagnetic induction sensor unit 202 for receiving after transmitting the magnetic flux line generated from the electromagnetic induction coil to the inspection site. Probe unit 203 including a; A control unit 204 for reflecting the information on the hand-shake measured by the acceleration sensor in the received information on the magnetic flux line; And a display unit 205 for displaying information on a magnetic flux line in which the camera shake information is reflected.

When hand shaking occurs when a measurer scans the test site with the probe 203, an error may occur in the magnetic flux line received by the electromagnetic induction sensor 202. Therefore, it is necessary to correct the camera shake of the measurer. The technical gist of this source invention is that by including the acceleration sensor 201 for measuring the hand shake of the measurer, it is possible to measure the hand shake of the measurer and correct the error of the magnetic flux line due to the hand shake by using this.

The electromagnetic induction sensor unit 202 includes an electromagnetic induction coil therein, and receives the magnetic flux line generated from the electromagnetic induction coil after transmitting it to the inspection site. The control unit 204 corrects an error due to the vibration measured by the acceleration sensor 201 in the information on the magnetic flux line received by the electromagnetic induction sensor unit 202. Information on the magnetic flux line for which an error due to hand shake is corrected by the control unit 204 is displayed by reflecting the hand shake information on the display unit 205. The test apparatus includes a space 206 that can accommodate a specimen (reference specimen) in a normal state; And it has a configuration that may further include a reference sensor unit 208 including a reference sensor 207 for measuring the specimen in the normal state.

Korean Patent Publication No. 10-2016-0013750

The non-destructive inspection system as described above is a portable independent unit, which is a device suitable for performing inspection in a specific area by mounting a sensor.Non-destructive inspection performed collectively on a multi-faceted or long inspection object is essentially Since it is impossible, it is necessary to measure and inspect every inspection point, so there is a problem that it takes a lot of inspection time and inspection personnel cost.

The sensor unit of the non-destructive inspection system of the present invention is invented to solve the conventional problems as described above, and has a large area or a long length and a continuous inspection object, for example, a steel plate, a steel pipe, a ship or a bridge in the manufacturing process. Inexpensive and reliable multi-purpose, inspection by greatly reducing device manufacturing costs by making it easy to measure large structures on the back, etc., and by improving the configuration of the sensor unit and the software that controls it without a separate measuring device. We intend to provide a sensor unit in a non-destructive inspection system with high adaptability to the target.

The sensor unit of the non-destructive inspection system of the invention devised to solve the above problems,
Consist of a PC with processing software as an application, a driver mounted as a board on the PC and a driver (DMS) engine, which is an amplifier, and a plurality of sensor units installed in a spaced measurement location and fixedly arranged in a frame according to the shape of the object to be measured. The PC, the driver (DMS) engine, and the sensor unit are connected to each other through an RS communication cable, and the sensor unit is configured to have a sensor unit assigned an address according to the setting of the application of the PC 10. A sensor unit in a non-destructive inspection system for measuring;
Each of the sensor units independently has a sensor core, a switching unit signally connected to the sensor core, and a microcomputer that controls an EPROM that is stored by inputting a channel address with an ID according to a signal of the switching unit, Corresponding to the size and shape of the object to be measured by selectively driving only the sensor corresponding to the address number stored in the EPROM of the channel according to the setting of the application of the PC,

It is characterized in that a controlled measurement corresponding to a characteristic of a measurement object is possible by changing each measurement characteristic of the sensor unit corresponding to the specific address number.

delete

delete

The sensor unit of the non-destructive inspection system of the present invention can perform many non-destructive inspections in a short time by configuring various sensor assemblies by adapting to the inspection object, and has the effect of setting and configuring an analysis program suitable for the inspection object to be applied. Have.

1 is a configuration diagram of a conventional general non-destructive inspection system.
2 is a schematic diagram of a basic concept of a non-destructive inspection system to which the sensor unit of the non-destructive inspection system of the present invention is applied.
3 is an example of application of the sensor unit of the non-destructive inspection system of the present invention.

Hereinafter, the configuration and operation according to a preferred embodiment of the sensor unit of the non-destructive inspection system of the present invention will be described in more detail with reference to the accompanying drawings.

FIG. 2 is a schematic diagram of a basic concept of a non-destructive inspection system to which the present invention is applied, and FIG. 3 is an application example of the sensor unit of the non-destructive inspection system of the present invention.

The non-destructive inspection system (S) to which the sensor unit of the non-destructive inspection system of the present invention is applied may be a personal or industrial computer as a signal processing device, and a PC 10 having a processing software as an application 11, a board on the PC 10 It is configured as a driver (DMS) engine 20, which is a driver mounted as an amplifier, and a sensor unit 30, which is a sensor group installed in a spaced measuring place,

The PC 10, the driver (DMS) engine 20, and the sensor unit 30 are configured by being connected to each other as an RS communication cable 40. Therefore, it is possible to configure a communication line up to 128 channels by this RS232 communication cable.

The sensor unit 30 is a sensor group that is provided in a gap in the measurement area corresponding to the area and length of the measurement object, and is provided in a required number. If the maximum sensor units (S1, S2, S3, ..Sn) are provided, RS232 is RS232. 128 sensor units (S1, S2, S3,..Sn) can be provided according to the communication protocol.

Each sensor unit (S1, S2, S3, ..Sn) of the sensor unit 30 is a conventional sensor core for self-leakage inspection using an eddy current ( 31) and the switching unit 32 signal-connected to the sensor core 31 and the ID of each sensor unit (S1, S2, S3, ..Sn) according to or in cooperation with the signal of the switching unit 32 A microcomputer 34 that controls the EPROM 33 in which an in-channel address (address#) is input and stored is configured and has.

These switching units 32 and EPROM 33 storing the channel address# according to the signal of the switching unit 32 and the microcomputer 34 controlling the same are all mounted on a small PCB board P shown as elements. It is accommodated in the probe housing of each sensor unit (S1, S2, S3, ..Sn) of the sensor unit 30.

As the above configuration, the sensor unit 30 constituting each sensor unit (S1, S2, S3, ..Sn) stores the channel address# according to the signals of the switching unit 32 and the switching unit 32. The EPROM 33, the microcomputer 34 controlling the same, and the software of the PC 10 to be signal-processed, and the configuration logic for selecting and distributing such a channel address is a general technique in the art, so it will not be described in detail.

When switching the sensor units (S1, S2, S3, ..Sn) of the sensor unit 30 of a specific group in the application 11 of C (10),

EPROM 33 that stores the channel address # according to the signal of the switching unit 32 and the switching unit 32 only the sensor units (S1, S2, S3,...Sn) corresponding to the address number of the corresponding channel, and The controlling microcomputer 32 may be selectively driven or the measurement characteristics of the sensor units S1, S2, S3, ..Sn corresponding to the corresponding address # may be changed.

Here, measurement characteristics refer to different physical and physical properties depending on the sensor location, such as the shape of the object to be measured with a large area or long length (a part with an empty space or hole), different thicknesses, and different materials. Design prediction and measurement in advance, and measurement characteristics of the sensor unit (S1, S2, S3,..Sn) corresponding to the address of the corresponding location, and the analysis method, function, and variable of the measured value are different to enable batch measurement. .

FIG. 3 illustrates that the sensor unit 30 is fixed to a sensor fixing frame (not shown) along the non-destructive inspection line L having a long length to collectively sense an area of a specific length. If the area is large, the fixing frame to which the sensor units S1, S2, S3, ..Sn of the sensor unit 30 are fixed will be a grid-shaped mounting frame.

This configuration can be applied to the non-destructive inspection system of the present invention as a measurement system that is fixed in a process that is continuously supplied, such as a steel plate or a steel pipe, a ship hull, an automobile chassis.

The non-destructive inspection system of the present invention as described above enables multidimensional inspection analysis by selectively measuring an inspection area having a long length or a large area at a time, and also enables measurement in a short time, thereby significantly improving productivity. .

In the present invention, the RS232 communication protocol is mentioned, but it goes without saying that the number of sensor units (S1, S2, S3, ..Sn) can be further increased by using RS485 communication for a large area.

In the above, preferred embodiments of the present invention have been illustrated and described, but the present invention is not limited to the specific embodiments described above, and is generally used in the technical field to which the present invention belongs without departing from the gist of the present invention claimed in the claims. Various modifications or applications are possible by a person having knowledge of, of course, such modifications or application examples should not be individually understood from the technical idea or prospect of the present invention.

S: Non-destructive inspection system
S1,S2,S3,..Sn: sensor unit
10: PC
20: Driver (DMS) engine
30: sensor unit
40: RS232 communication cable

Claims (1)

PC (10) having processing software as an application (11), driver (DMS) engine (20), which is a driver and amplifier mounted as a board on the PC (10), is installed in a spaced measurement location and fits the shape of the object to be measured. Having a sensor unit 30 consisting of a plurality of sensor units (S1, S2, S3, ..Sn) fixedly disposed on the frame, the PC 10 and the driver (DMS) engine 20 and the sensor The unit 30 is configured by being connected as a mutual RS communication cable 40, and the sensor units S1, S2, S3, ..Sn are assigned addresses according to the settings of the application 11 of the PC 10. In the sensor unit (S1, S2, S3,..Sn) in the non-destructive inspection system for measuring the sensor unit (S1, S2, S3,..Sn);
The sensor units (S1, S2, S3, ..Sn) are each independently a sensor core 31, a switching unit 32 signal-connected to the sensor core 31, and the signal of the switching unit 32 In accordance with the built-in microcomputer 32, which controls the EPROM 33 to which the respective ID channel address is input and stored, the EPROM 33 of the channel according to the settings of the application 11 of the PC 10 It corresponds to the size and shape of the object to be measured by selectively driving only the sensors (S1, S2, S3, ..Sn) corresponding to the address numbers stored in the
A sensor unit of a non-destructive inspection system, characterized in that it is possible to perform controlled measurement corresponding to the characteristics of the object to be measured by changing the measurement characteristics of the sensor units (S1, S2, S3,...Sn) corresponding to the specific address number. .

Images