KR20200082470A - PCB and SCR degradation diagnostic system for ships - Google Patents

Abstract

The present invention relates to a PCB for a ship and to an SCR degradation diagnostic system. The SCR degradation diagnostic system comprises: a panel; a probe moving robot installed on the panel, capable of moving in three axes of X, Y, and Z, and formed to be rotated about the Z axis; a probe unit mounted on the panel or probe moving robot to measure a current/voltage of the PCB; and an output unit outputting the current/voltage measured from the probe unit. After moving the probe moving robot to a measurement location, the probe unit measures the current/voltage of the PCB, and the degradation of the PCB can be diagnosed by outputting the measurement value to the output unit.

Description

PCB and SCR degradation diagnostic system for ships

The present invention relates to a PCB and SCR deterioration diagnosis system for ships, and more particularly, to a ship PCB and SCR deterioration diagnosis system for diagnosing PCB deterioration of a ship using a mobile robot capable of 3-axis movement and 1-axis rotation.

With the rapid development of IT technology and increasing interest in IT convergence, the demand for ship automation in the shipbuilding industry is accelerating. Major ship automation systems include an integrated navigation system, position control system, and ship auto propulsion control system. These ship automation systems reduce nautical labor and improve ship safety through voyage information management and monitoring and manipulation of each facility on board. It makes it possible to secure economic efficiency of operation.

In general, the automation devices as described above cause a big problem in safety when a malfunction occurs during operation and cannot be easily repaired, and a large loss is caused when the repair is carried out.

Currently, expensive electromagnetic boards (PCB boards, printed circuit boards) are used to drive automation devices applied to ships. Most of these PCB boards are expensive as foreign products, so instead of replacing them with new boards when a failure occurs. It is being repaired and used.

This PCB board repair method is mainly based on empirical know-how, and after replacing the device for the part where the failure occurs frequently, or after testing the device through the characteristic analysis of the device, the problem device is replaced and tested. Is going on.

However, the types of electronic circuits used in facilities cannot be counted, and various types of electronic circuits require specialized knowledge to carry out repairs. It has to be done, but there are cases where experts cannot repair it on time because it is less than necessary, and it is expensive.

The present invention is to solve the above problems, and even a non-expert can automatically collect PCBs to accumulate the capability to perform deterioration diagnosis and repair/management tasks of electronic circuits through a little technical knowledge and a skillful period of repair. An object of the present invention is to provide a ship PCB and SCR deterioration diagnostic system capable of diagnosing deterioration of a substrate.

Marine PCB and SCR degradation diagnosis system according to an embodiment of the present invention for solving the above problems, the panel; A probe moving robot installed on the panel, movable in three axes of X, Y, and Z, and formed to be rotatable about the Z axis; It is mounted on the panel or the probe mobile robot and includes a probe for measuring the current/voltage of the PCB and an output for outputting the measured current/voltage from the probe. After moving the probe mobile robot to a measurement position, the probe It can measure the current/voltage of the PCB as a negative and output the measured value to the output to diagnose the deterioration of the PCB.

Here, the probe unit is mounted on the probe mobile robot probe to contact the PCB; A voltage generator mounted on the panel and configured to output an electric variable including waveform shape, frequency, and voltage by a user setting; The voltage/current measurement unit mounted on the panel senses the changed voltage/current at the probe contact point through the electrical variable output from the voltage generator, and the voltage/current value sensed by the voltage/current measurement unit is transmitted to the output unit The probe and the voltage generator may be connected by a noise shielding cable.

In addition, the output unit outputs the current/voltage by graphing V-I, and it is possible to diagnose the deterioration of the PCB by matching the template with the V-I graph for the PCB in a normal state that has been stored.

In addition, the probe is installed on the mobile robot, and further includes a vision machine camera that photographs the diagnostic area of the PCB. After moving the probe to the location of the PIN, which is a measurement point during initial registration, the vision machine camera is photographed to match the template. After designating the desired location through binarization and square detection, the center point of each square detection is extracted through labeling, and the center point of the probe is matched with the first center point of square detection to detect the PIN point. can do.

In addition, the ship PCB and SCR deterioration diagnostic system is applied to the high voltage of 1V to 4000V to the Anode and Cathode of the SCR (power device) and monitors the current flowing according to the applied voltage to determine whether the device is abnormal or not. It may further include wealth.

In addition, the SCR diagnostic unit is pressurized through a cylinder, and a load cell capable of measuring pressure is mounted on the opposite side of the cylinder to measure the pressurized pressure, and insulators are placed on both ends of the SCR so that no voltage is applied to the rest except SCR. Can be configured.

The PCB and SCR deterioration diagnosis system for ships according to an embodiment of the present invention automates the movement of the probe and expresses the deterioration result on the graph so that it can be easily observed with the naked eye, so that even for a non-expert, it can be used for some electronic knowledge and repair. Through the period of skill in Korea, it is possible to accumulate the capability to carry out diagnosis and repair/management of electronic circuits.

In addition, the ship PCB and SCR deterioration diagnosis system according to an embodiment of the present invention can measure PCB deterioration by mixing the SCR diagnosis unit 60 and the probe unit 30, thereby enabling more precise and detailed PCB deterioration measurement. .

1 is a schematic diagram of a ship PCB and SCR deterioration diagnostic system according to an embodiment of the present invention.
FIG. 2 is a perspective view of the probe mobile robot and probe portion of the ship PCB and SCR deterioration diagnostic system of FIG. 1.
FIG. 3 is a block diagram of the configuration of the probe of FIG. 2.
4 is a diagram illustrating a deterioration diagnostic method through a graph of a ship PCB and SCR deterioration diagnostic system according to an embodiment of the present invention.
5 is a flowchart of a method for automatically performing a PCB deterioration diagnosis for a ship using a vision machine camera.
6 is a schematic view of the present invention having an SCR diagnostic unit.

Hereinafter, the description of the present invention with reference to the drawings is not limited to a specific embodiment, and various conversions may be applied and various embodiments may be provided. In addition, it should be understood that the contents described below include all transformations, equivalents, and substitutes included in the spirit and scope of the present invention.

In the following description, terms such as first and second are terms used to describe various components, and are not limited in meaning to themselves, and are used only to distinguish one component from other components.

The same reference numerals used throughout this specification denote the same components.

The singular expression used in the present invention includes the plural expression unless the context clearly indicates otherwise. In addition, terms such as “include”, “have” or “have” described below are intended to designate the existence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification. It should be interpreted and understood to not preclude the existence or addition possibility of one or more other features, numbers, steps, actions, components, parts or combinations thereof.

Hereinafter, a ship PCB and SCR deterioration diagnosis system according to a preferred embodiment of the present invention will be described in detail with reference to FIGS. 1 to 6.

1 is a schematic diagram of a ship PCB and SCR deterioration diagnostic system according to an embodiment of the present invention, Figure 2 is a perspective view of the probe mobile robot and probe portion of the ship PCB and SCR deterioration diagnostic system of Figure 1, Figure 3 is a view of Figure 2 It is a block diagram of the configuration of the probe unit, and FIG. 4 is a diagram illustrating a deterioration diagnosis method through a graph of a deterioration diagnosis system for PCB and SCR for ships according to an embodiment of the present invention.

1 to 4, the ship PCB and SCR deterioration diagnosis system according to an embodiment of the present invention includes a panel 10, a probe moving robot 20, a probe 30 and an output 40 can do.

Specifically, the panel 10 is not limited in its material, shape, and size, and may form a space therein to embed other components or use it as a storage unit to store ship parts or devices.

Here, the panel 10 is preferably provided with an opening and closing means on one side to facilitate the installation or exchange of the built-in components, the other built-in components are the voltage generator 32, the voltage / of the probe section 30 to be described later It may be a current measuring unit 33 and the communication unit 34. However, the present invention is not limited to these, and other configurations constituting the present invention may be incorporated.

The probe moving robot 20 may be moved about three axes, and may be formed to rotate about one axis. Here, three axes are X-axis, Y-axis, and Z-axis, and one axis for rotation may be Z-axis. However, it is not necessarily limited, and the axis for rotation may be extended to the X axis and the Y axis, including the Z axis. Rotation about the Z axis is provided to avoid obstacles when the probe 31 to be described later moves against the PCB 5.

The probe movement robot 20 is installed on the panel 10 for three-axis movement and one-axis rotation, and is formed to move along the length of the X-axis rail 21 and the X-axis rail 21 spaced apart on both sides. It is formed to move along the length of the X-axis moving body 22 forming the Y-axis rail 22a along the longitudinal direction at the upper end, and the Y-axis rail 22a formed on the X-axis moving body 22, the front The probe may include a Y-axis moving body 23 to which the header 24 is mounted. Here, the probe header 24 is a header to which the probe 31 of the probe unit 30 will be described later.

In addition, in the case of the Y-axis moving body 23, the length of the probe portion header 24 may be formed to adjust the position vertically by forming the length in the Z-axis direction, and the probe portion header 24 is formed to rotate relative to the Z axis Can be. Here, each of the moving bodies 22 and 23 or the probe header 24 may be connected to a motor (not shown) to generate a driving force, whereby movement of the X, Y, and Z axes and rotation about the Z axis are formed. Can be.

The probe unit 30 may be mounted on the panel 10 or the probe mobile robot 20 to measure the current and voltage of the PCB. To this end, the probe unit 30 may include a probe 31, a voltage generator 32, a voltage/current measuring unit 33, and a communication unit 34.

Specifically, the probe 31 may be mounted on the probe moving robot 20, and may be mounted on the probe header 24 in detail. Further, the probe 31 may be formed to contact the PCB 5 according to the movement of the probe moving robot 20. That is, the probe 31 is moved to the position for testing through X- and Y-axis movement of the probe movement robot 20 to be focused, and the PCB 5 through the Z-axis movement of the probe movement robot 20 ).

The voltage generator 32 may be mounted on the panel 10, and may output an electric variable including a waveform shape, frequency, and voltage by a user setting. Here, the voltage generator 32 may be connected to the probe 31 to perform variable output of the above electrical variables when the PCB 5 of the probe 31 is in contact with the probe 31 and the voltage generator 32 may be connected to a noise shielding cable 35 that can shield noise. This is to increase the power signal transmission properties, the noise shielding cable 35 may be a BNC cable as an example.

The voltage/current measurement unit 33 may be mounted on the panel 10 and sense the changed voltage/current at the contact portion of the probe 31 through the electrical variable output from the voltage generation unit 32. That is, when the probe 31 is moved by the probe moving robot 20 to contact the PCB 5, the voltage generating unit 32 generates a power signal to measure the voltage/current change for the contacting part by measuring the voltage/current. The part 33 is detectable.

The communication unit 34 may be interlocked with the output unit 40 by wire or wireless, and preferably may be interlocked with the output unit 40 using power line communication (PLC). Here, the communication unit 34 may transmit the voltage/current change value measured from the voltage/current measurement unit 33 to the output unit 40, and the output unit 40 outputs it to facilitate the PCB degradation diagnosis worker Can be monitored.

The output unit 40 may output to easily check the current/voltage measured from the probe unit 30 as described above. Here, the output unit 40 can curve and output current/voltage values to a VI graph, and the measured and curved VI graph is a VI graph and template for a normal-state PCB stored in the output unit 40. Matching can be used to easily diagnose deterioration of the PCB with the naked eye.

For example, if the VI graph measured against the VI graph for a normal-state PCB stored in the output unit 40 has an image asynchronous rate of 10% to 20%, be careful to continue using it or replace parts for preventive maintenance. If the image asynchronous rate is 20~100%, it is judged as deterioration, and electronic parts of the deterioration and failure parts are replaced, and if the image synchronization rate is 90% or more, it can be judged as normal and continue to be used.

This method has the advantage that it can be easily determined with the naked eye and automatically judged.

In addition, the output unit 40 is not limited to any specific device, and may include all devices having an output means that can be observed with the naked eye, that is, a tablet PC, a personal PC, a portable terminal, and a control system. In addition, it may be formed to enable control of the probe mobile robot 20.

Meanwhile, the ship PCB and SCR deterioration diagnosis system according to an embodiment of the present invention may further include a vision machine camera 50 installed in the probe mobile robot 20 to photograph a diagnosis area of the PCB. This will be described with reference to FIG. 5.

5 is a flowchart of a method for automatically performing a PCB deterioration diagnosis for a ship using a vision machine camera.

The vision machine camera 50 is a camera that exhibits high performance in real-time operation and is not sensitive to changes in lighting, etc., and is mounted on the probe header 24 of the probe movement robot 20 to be utilized for imaging the diagnostic area of the PCB, thereby moving the probe The robot 20 can automatically diagnose the deterioration while moving the PCBs, and through this, it is possible to easily respond to the PCB substrate structure in which the position is changed according to the state of the solder and solder.

Specifically, as shown in FIG. 5, the probe moving robot 20 first moves the probe to the location of the PIN of the PCB that is the measurement point set at the time of initial registration, and then shoots the vision machine camera 50 to match the template By designating the desired location through, binarization and square detection, the center point of each square detection can be extracted through labeling. Here, the center point of the probe 31 may be matched with the first center point of square detection to detect a PIN point.

Through this, the probe moving robot 20 may move the test points of the PCB 5 itself, so that the probe 30 can measure the deterioration of the PCB substrate.

On the other hand, in the case of template matching, if there is no previously stored template, template matching may be performed after the template designation and storage steps are performed first.

6 is a schematic view of the present invention having an SCR diagnostic unit.

Referring to Figure 6, the ship PCB and SCR deterioration diagnostic system according to an embodiment of the present invention, by applying a voltage of 1V to 4000V to the Anode and Cathode of the SCR (power device) and monitoring the current flowing according to the applied voltage An SCR diagnosis unit 60 for checking whether an element is abnormal or not may be further included.

Specifically, the SCR diagnostic unit 60 may be composed of a high pressure generator (not shown) and a current measurement unit (not shown). The high pressure generator is formed to apply high pressure to the SCR anode and cathode, and the current measurement unit It can measure the current flowing according to the variable voltage and cut off the voltage when it flows above the threshold current.

In order to diagnose the disk type SCR, the SCR diagnosis unit 60 must press the pressure described in the manual of the SCR and then proceed with the diagnosis. To be able to do so, pressurization is performed through the cylinder 61, and a load cell 62 capable of measuring pressure is mounted on the other side of the cylinder 61 to measure the pressurized pressure, and the voltage is applied to the rest except SCR. Insulators can be configured on both ends of the SCR so as not to get caught.

The SCR diagnostic unit 60 may be used for PCB deterioration measurement together with the probe unit 30 to enable more accurate and detailed deterioration measurement of ship electronic components.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, it will be understood that the present invention may be implemented in other specific forms by those skilled in the art. Therefore, the above-described embodiment is illustrative in all respects and is not limiting.

5: PCB
10: Panel
20: probe mobile robot
21: X-axis rail
22: X-axis moving body
22a: Y-axis rail
23: Y-axis moving body
24: probe header
30: probe
31: probe
32: voltage generator
33: voltage / current measurement unit
34: communication unit
35: noise shielding cable
40: output unit
50: vision machine camera
60: SCR diagnostic unit
61: cylinder
62: load cell

Claims (6)

panel;
A probe moving robot installed on the panel, movable in three axes of X, Y, and Z, and formed to be rotatable about the Z axis;
A probe unit mounted on the panel or probe mobile robot to measure the current/voltage of the PCB and
It includes an output for outputting the current / voltage measured from the probe,
A PCB and SCR deterioration diagnostic system for ships, characterized in that after moving the probe moving robot to a measurement position, the current/voltage of the PCB is measured by the probe, and the measured value is output to the output to diagnose deterioration of the PCB.
According to claim 1,
The probe portion,
A probe mounted on the probe moving robot to contact the PCB;
A voltage generator mounted on the panel and outputting by varying an electrical variable including a waveform shape, frequency, and voltage by a user setting;
A voltage/current measuring unit mounted on the panel to sense the changed voltage/current at the probe's contact area through the electrical variable output from the voltage generating unit, and
It includes a communication unit for transmitting the voltage / current value sensed by the voltage / current measurement unit to the output unit,
The probe and the voltage generator is a ship PCB and SCR deterioration diagnostic system, characterized in that connected by a cable for noise shielding.
According to claim 1,
The output unit,
A PCB and SCR deterioration diagnosis system for ships characterized in that the current/voltage is graphed and outputted, and the graph is template-matched to a VI graph for a normal stored PCB to diagnose deterioration of the PCB.
According to claim 1,
It is installed on the probe mobile robot further comprises a vision machine camera for taking a diagnostic area of the PCB,
Upon initial registration, after moving the probe to the location of the PIN, which is the measurement point, the vision machine camera is photographed to designate the desired location through template matching, binarization and square detection are performed, and then each square is detected through labeling A PCB and SCR deterioration diagnostic system for ships characterized by extracting the center point of the probe and detecting the PIN point by matching the center point of the probe with the first center point of square detection.
According to claim 1,
Ship PCB and SCR deterioration diagnostic system further comprising an SCR diagnostic unit that checks for the presence/absence of a device by applying a high voltage of 1V to 4000V to the Anode and Cathode of the SCR (power device) and monitoring the current flowing according to the applied voltage.
The method of claim 5,
The SCR diagnostic unit,
Pressurization is performed through the cylinder, and a load cell capable of measuring pressure is mounted on the opposite side of the cylinder to measure the pressurized pressure, and it is characterized in that an insulator is formed at both ends of the SCR so that no voltage is applied to the rest except SCR. Marine PCB and SCR deterioration diagnosis system.

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