KR20220158129A - Automated test device and its test method thereof - Google Patents

Abstract

The present invention comprises the following configuration. The present invention relates to an automated test device which comprises: an RTU device; an interface module configured to perform one or more functions among a sensor unit, an image recognition unit, an aging test unit, an error detection device for testing the RTU device; a sensor node unit connecting the interface module; and a gateway device receiving data collected by the sensor node unit.

Description

Automated test device and its test method {Automated test device and its test method}

The present invention relates to an automated test apparatus for an RTU device and a test method thereof.

As shown in FIG. 9, the event generating device 20 includes a signal input unit 21, an event setting unit 22, an event generating unit 23, a response signal receiving unit 24, a conversion unit 25, and status information. It is configured to include a transmission unit 26.

The signal input unit 21 receives a signal corresponding to an event generation test environment from the environment setting device 10 . That is, the signal input unit 21 repeatedly receives a signal including monitoring/measurement/control command information from the environment setting device 10 as many times as the number of occurrences for each pulse period.

The event setting unit 22 generates a protocol for transmission to the isolation device 30 based on the signal received through the signal input unit 21. That is, the event setting unit 22 sets the sequence number (Seq No) and the error check byte (LRC) in the signal received through the signal input unit 21, merges them with monitoring/measurement/control command information, and merges them with the remote control command information. A protocol to be transmitted to the device 30 is created.

The event generating unit 23 transmits the protocol generated by the event setting unit 22 to the isolation device 30 . That is, the event generation unit 23 transmits a protocol including a sequence number, an error check byte, and monitoring/measurement/control command information to the remote device 30 for each pulse cycle.

The response signal receiving unit 24 receives a response signal for the previously transmitted protocol from the remote control device 30 . That is, the response signal receiving unit 24 receives a response signal for the monitoring/measurement/control command information included in the previously transmitted protocol from the remote control device 30.

The conversion unit 25 converts the response signal received from the response signal receiver 24 into status information. That is, the conversion unit 25 converts the received response signal into state information that is a basis for analyzing the operating state of the remote control device 30 .

The status information transmission unit 26 transmits the status information converted by the conversion unit 25 to the environment setting device 10 .

Korea Intellectual Property Office Patent Registration No. 10-1186754 (2012.09.28) Korea Intellectual Property Office Patent Registration No. 10-1936376 (2019.04.03) Korea Intellectual Property Office Patent Registration No. 10-2241419 (2021.04.19) Korean Intellectual Property Office Patent Publication No. 10-2005-0080330 (2005.08.12)

The first problem to be solved by the present invention is to solve the problem of configuring an automatic test device to have versatility by adding functions necessary for testing each RTU device to an interface module.

The second problem to be solved by the present invention is to solve the problem of not only having a function of monitoring data in real time but also of detecting an error.

The third problem to be solved by the present invention is to solve the problem of data and video logging after testing the RTU device.

The fourth problem to be solved by the present invention is to solve the problem of having a simple and economical structure and improving the speed and ease of maintenance.

In order to solve the above problems, it has the following configuration.

RTU device;

an interface module configured to perform at least one function among a sensor unit for testing the RTU device, an image recognition unit, an aging test unit, and an error detection unit;

a sensor node unit connecting the interface module;

It has an automated test device consisting of; a gateway device that receives data collected by the sensor node unit.

Here, the sensor node unit is preferably composed of a smart sensor node unit configured by wire and a simple sensor node unit configured wirelessly.

Here, it is preferable that the RTU device is composed of one and the sensor node unit and the interface module are composed of a plurality of pieces.

Here, it is preferable that each of the RTU device, the sensor node unit, and the interface module is configured in plurality.

Here, the sensor unit has a configuration for collecting sensor information of one or more of an acceleration sensor, a human body sensor, a distance sensor, a temperature sensor, a fire sensor, a voltage sensor, a current sensor, a pressure sensor, a vibration sensor, a flow sensor, and a geomagnetic sensor. desirable.

Here, the image recognition unit is configured to configure a camera to monitor the state of the RTU device,

It is preferable to configure the monitor of the RTU device and to recognize the contents of the expression of the RTU device so as to determine normality through artificial intelligence learning.'

Here, it is preferable that the image recognition unit has a configuration that efficiently proceeds with image recognition, logging, search, and output of inspection data.

Here, communication between the interface module and the sensor node unit is preferably configured to enable Ethernet or CAN wired communication.

Here, the interface module is preferably configured so that the RTU device supports real-time decision-making through at least one of data acquisition, data storage, data preprocessing, data analysis, and data diagnosis.

Here, it is preferable to configure the interface module to acquire the data of the RTU device through signal processing technology of fine signal detection and noise cancellation.

Preferably, the interface module automatically performs an input/output test and function evaluation according to a test profile designed for the RTU device, and an aging test is performed for a predetermined time to evaluate defects and output a report.

Here, it is preferable that the interface module is configured as an I/O dedicated interface module in an I/O port, which is an input/output terminal required for testing the RTU device, to transmit/receive data to and control the sensor node unit.

Here, in order to test whether the LED of the RTU device is lit and the performance of the LCD, a camera is configured in the image recognition unit of the interface module to recognize the display contents of the LED and the LCD to determine whether the LED is normal or not. It is desirable to configure

Preferably, the gateway device is configured to collect data collected by the sensor node unit and transmit the collected data to a server.

Here, the gateway device is preferably configured to derive results by collecting data, setting test conditions, including AI-Edge techniques, and analyzing results.

Next, we will look at how to test the automated test device.

In the automated test device test method for testing the automated test device,

a test selection step of selecting a target for testing the RTU device;

an interface module step of designing and testing the interface module after the test selection step;

a profile test step of testing the RTU device according to a test profile after the interface module step;

a test result step of displaying a test result of the RTU device by utilizing edge AI using the interface module in the sensor node unit for the data obtained in the profile test step;

a data transfer step of transferring defect/absence data of the test result step to the gateway device;

It relates to an automated test apparatus test method having a result derivation step of transmitting to a server after the data transfer step to derive and analyze the result.

The first effect of the present invention is to have an effect of configuring an automatic test device to have versatility by adding functions necessary for testing each RTU device to an interface module.

The second effect of the present invention is to have an effect of detecting an error as well as having a function of monitoring data in real time.

A third effect of the present invention is to have the effect of logging data and videos as a result of testing the RTU device.

The fourth effect of the present invention is to have a simple and economical structure and to improve the speed and ease of maintenance.

Figure 1 is a flow chart of the AI-Edge sensor network.
Figure 2 is a schematic diagram of a test in which several sensor nodes and interface modules are used in one RTU.
3 is an exemplary flow chart of a test profile.
4 is an exemplary operation flow chart of an automatic test device.
5 to 7 are schematic diagrams of an automatic testing device for testing an RTU device.
8 is a flow chart showing a method of testing the RTU device through an automatic testing device.
Figure 9 is a diagram showing the background art.

Referring to FIGS. 1 and 2, it is as follows.

The RTU device 100 is configured.

Equipment such as RTU (Remote Terminal Unit) had a lot of input/output ports, and it was difficult to have an automated test device with an overall configuration, such as LCD, LED, etc., which the test manager had to visually check and check. In the case of large enterprises, etc., they configure overall test devices specialized for specific devices, but in small and medium-sized enterprises, etc., it is not mass-produced. . As a result, there was a situation where losses and accidents occurred due to human error.

In this patented invention, aging tests such as product production and automated function tests such as various RTU devices are possible,

It is a multifunctional platform that can efficiently log, search, and output inspection data including image recognition.

In order to solve this problem, an overall platform device capable of testing the RTU device 100 was designed.

This device is not a single specialized RTU device 100, but a platform capable of function test, aging, test result output, etc. for various RTU devices or individual devices is designed, which is applicable to any device to have versatility Modular design was carried out, and it was largely divided into a Smart Sensor Node part 320 and a Simple Sensor Node part 340.

It is designed to connect the interface module 200 to the sensor node unit 300.

The interface module has versatility by loading and connecting functions necessary for each RTU test.

The interface module 200 is configured to perform one or more functions among a sensor unit for testing the RTU device 100, an image recognition unit, an aging test unit, and an error detection unit.

An automated test device that receives data collected by the sensor node unit 300 from the gateway device 400 is configured.

The sensor node unit 300 is composed of a smart sensor node unit 320 configured by wire and a simple sensor node unit 340 configured wirelessly.

As shown in FIG. 2, the RTU device 100 is composed of one and the sensor node unit 300 and the interface module 200 are composed of a plurality of pieces.

1 shows that the RTU device 100, the sensor node unit 300, and the interface module 200 each consist of a plurality of pieces.

The interface module 200 is composed of an I/O dedicated interface module 200 in an input/output I/O port necessary for testing the RTU device 100 to transmit/receive data to and control the sensor node unit 300. it is composed

The RTU device to be tested is a test device that can be applied to all RTU devices 100 without a specific product.

As in the case of FIG. 2, an example will be described.

As shown in the figure, many I/O input/output terminals 110 may be required, but since many I/O input/output terminals 110 cannot be configured in the sensor node 300, I/O dedicated interface module 200 can be made to correspond to I/O input/output ports, which are numerous input/output terminal units 110, and can be configured in the form of transmitting and receiving data to and from the sensor node unit 300 for control.

In order to respond to the items that the existing testers directly saw and tested, such as LED (120) and LCD (130), the camera part (250) was designed in the interface module (200) and LED (120), LCD through artificial intelligence learning (130) It is possible to determine whether the state is normal or abnormal.

By applying the power meter 140 to the interface module 200, it is determined whether the input/output power supply unit 140 is normal.

Sensors such as a temperature sensor and a geomagnetic sensor may be installed in the interface module 200 to determine device sensing accuracy, and may also be used to determine normal operation of the device.

A test may be performed by implementing functions required by the target RTU device 100 through the interface module 200 and collecting data from the sensor node unit 300.

The sensor unit has a configuration for collecting sensor information of one or more of an acceleration sensor, a human body sensor, a distance sensor, a temperature sensor, a fire sensor, a voltage sensor, a current sensor, a pressure sensor, a vibration sensor, a flow sensor, and a geomagnetic sensor.

The Smart Sensor Node (320) monitors the test operation status and functions of the RTU device (100) in real time.

It has various input/output terminal units 110 such as UART, I2C, and SPI.

It has versatility by designing various interface modules (200) according to the necessary functions.

It is to have a device that can correspond to any device by connecting in parallel as many as necessary.

It is possible to meet the development and requirements of the interface module 200 according to the situation of the consumer.

It has image recognition function through AI function.

It is possible to monitor the test operation status of the RTU device 100 in real time.

The camera unit 250 is a device capable of recognizing the contents of the display such as the LCD 130 / LED 120 through the AI Camera.

That is, the image recognition unit configures the camera unit 250 to monitor the state of the RTU device 100, and is configured to recognize the monitor of the RTU device 100 and the contents of the RTU device 100. It is to construct an automated test device configured to determine normality through artificial intelligence learning.

Communication between the interface module 200 and the sensor node unit 300 is configured to enable various wired communications such as Ethernet and CAN wired communications.

The test inspection is performed in 1:1 connection with the RTU device 100 corresponding to the industrial system panel.

It has test data and video logging function.

It will have real-time data monitoring function and error detection function.

Has versatility to respond to various RTU devices (100)

The image recognition unit has a configuration that efficiently proceeds with image recognition, logging, search, and output of inspection data.

Referring to FIGS. 2 and 3, it is as follows.

A flow chart having an error detection function will be described.

In order to test the RTU device 100 to be tested, a test scenario is created and an operation test is performed in order. When an abnormal operation (error) is detected during operation, a report is created.

If a scenario is created and applied, the entire test is automatically performed through the corresponding automatic test device, which was previously directly inspected for each function.

Input power supply 5V to I/O Port 1, which is the input/output terminal unit 110. (S10)

Check whether LED 120 1 is turned on (S20)

When the light turns on, pass and log the report. (S30),

If the light does not turn on, proceed with logging the Fail report. (S35)

Enter the ‘Message 123’ message into the I/O SPI communication port 3 of the input/output terminal unit 110. (S40)

Check whether the ‘123’ Message is output on the LCD 130. (S50)

If a normal message is output, pass and log the report. (S60)

If the message is not output, log the Fail report. (S65)

Next, the final result report is output (S70).

This corresponds to a very simple example for operation reference.

The interface module 200 is configured to automatically perform an input/output test and function evaluation according to a test profile designed for the RTU device 100, and an aging test for a predetermined time to evaluate defects and output a report. is to do

Here, in order to test whether the LED 120 of the RTU device 100 is lit and the performance of the LCD 130, the camera unit 250 is configured in the image recognition unit of the interface module 200, and the LED ( 120) and the display contents of the LCD 130 are configured to be recognized and configured to determine whether or not they are normal.

The Simple Sensor Node 340 of FIG. 1 is described as follows.

PORT, which is a variety of input/output terminals 110 such as UART, I2C, SPI, PWM, and ADC, is used.

It is easy to exchange and has versatility by designing various Interface Modules (200).

It is possible to develop the interface module 200 according to the situation of the customer and satisfy the requirements.

It is possible to expand the sensor node unit 300 to be connected by proceeding with modular design.

If necessary, a monitoring function indicating the status of the progress may be required while the test of the LSD (Legacy Sensor Device) device 150 is in progress, and it is possible to design a desired monitoring method according to the user's intention.

It uses CAN BUS, Bluetooth function and SOM (System On Module).

As a wireless communication function, it is implemented with communication such as ISM and MQTT.

It can be implemented with low power by using an internal battery.

It is possible to set simple event occurrence conditions (Non-AI Function).

It has a simpler and more economical structure, and maintenance is quicker and easier.

This is because by configuring a module having a wireless communication function, it is designed to be attached to and detached from a necessary part, and in case of failure, only the corresponding module needs to be replaced, so that maintenance can be performed quickly, and maintenance is simple and economical.

This is the benefit obtained by configuring it in the form of a module.

The test inspection is performed in 1:1 connection with the LSD device 150 to be tested.

Data of the LSD device 150 to be tested is collected, processed, and transmitted.

It has real-time data monitoring function and error detection function.

It is compatible with various devices such as thermocouples, thermistors, flow sensors, and pressure sensors.

Program flow charts may vary depending on the RTU device 100 to be tested.

Adding a test function with various sensors does not add anything specifically to the function, and it is possible to respond to the RTU device 100 test required by the function by making these measurement devices into an interface module.

A description of the Gateway Device 200 is as follows.

The data collected by the sensor node unit 300 is collected and transmitted to the server.

Utilize commercial network equipment for communication relay.

It is possible to configure both wired and wireless networks by configuring a communication network for the expansion and operation of the Smart Sensor Node unit 320 and the Simple Sensor Node unit 340.

It is possible to diversify and design the interface module 200 to meet the test purpose of each RTU device 100 for the ability to connect a general-purpose detection means.

Sensors are developed through the interface module 200 according to the situation and environment of the consumer.

It is applied to the interface module to perform sensing so that necessary functions such as an acceleration sensor, a human body sensor, and a distance sensor can be performed.

The RTU device 100 is tested by configuring sensor information required for the heat treatment facility, such as a temperature sensor and a fire detection sensor, in the interface module.

The RTU device 100 is tested by configuring an interface module for collecting sensor information mainly necessary for measurement, such as voltage, current, and vibration sensors in the energy environment.

Real-time decision-making is supported by acquiring, storing, pre-processing, analyzing, and diagnosing high-reliability data in extreme environments through machine learning-based real-time anomaly detection algorithms between people, environments, and devices.

That is, the interface module 200 configures the RTU device 100 to support real-time decision-making through at least one of data acquisition, data storage, data preprocessing, data analysis, and data diagnosis.

In addition, signal processing technologies such as fine signal detection and noise canceling (deletion) are applied to obtain reliable data.

That is, the interface module 200 is configured to acquire the data of the RTU device 100 through signal processing technology of fine signal detection and noise cancellation.

Preferably, the gateway device 400 is configured to collect and transmit data collected by the sensor node unit 300 to the server 500 .

The gateway device 400 is configured to derive results by collecting data, setting test conditions and analyzing results, including AI-Edge techniques.

In order to prevent a delay in data transmission according to an increase in the amount of data transmission in the factory, a technology for integrating data processing and storage functions in the sensor node unit 300 may be implemented.

It is possible to diversify and configure the interface module 200 to meet the test purpose of the RTU device 100 having numerous input/output terminals and complex functions.

It is possible to build an automated test device that automatically performs input/output tests and function evaluations according to the designed test profile, evaluates defects by conducting an aging test for a predetermined time, and outputs a report.

By adding the camera unit 250 module corresponding to the individual RTU device 100, the tester recognizes the contents of the LCD (130) / LED (120) displayed by AI and uses it for the test. .

The Smart Sensor Node unit (320 group and the Simple Sensor Node unit 340 group) link information to the Gateway Device (400) through wired or wireless communication means, and the plurality of Gateway Devices collect the data in the server 500 again. It is to derive the result by setting the test conditions including the AI-Edge technique and conducting the result analysis.

The server (500) is configured to simultaneously test a number of RTU devices (100) and LSD devices (150) in the factory. It is possible to perform the process efficiently.

Referring to Figure 4, it is as follows.

Design by diversifying the interface module (200) to meet the test purpose of RTU. (S100)

The input/output test and aging test are automatically performed according to the designed test profile (S200).

The smart sensor node unit 320 recognizes the LED/LCD display contents as AI through the camera unit 250 module corresponding to the individual RTU device 100 and evaluates whether or not there is a defect (S300). After evaluation, through wired communication Move to Gateway. (S400)

In the Simple Sensor Node part 340, a test inspection is performed in response to the individual LSD device 150. (S350)

After collecting LSD data and evaluating whether or not there is a defect, it moves to the gateway through wireless communication. (S450)

Information is linked from multiple Gateway devices (400) to Server (500) devices to collect data from Server (500) devices (S500). Test conditions including AI-Edge techniques are set and results are analyzed to derive results. ( S600)

Referring to Figure 5, it is as follows.

5 is a diagram showing a test for an RTU-SLC (170) having a 14-point 48V output function for traffic signals.

This interface module (200) has a voltage feedback means of 14 points, and is characterized by applying a 5W load to each registered output.

It is to configure and apply the interface module (200) that receives the signal registration signal output from the RTU-SLC (Slave Local Controller; 170) and simulates the load of the registration machine.

It is to manufacture an AI Camera module that can recognize the LCD (130) / LED (120) window seen by the test personnel, and based on this, check the operating status of the current RTU-SLC (170).

The camera unit 250 may be connected to the smart sensor node unit 320, but in the present invention, it is connected to the interface module 200 and included as one component of the interface module.

The communication method is composed of CAN BUS.

Referring to Figure 6, it is as follows.

6 is a diagram showing a test for the RTU-DLC 180 having a vehicle detection function.

This Interface Module (200) has a variable inductance circuit for simulating a six-point LOOP, and is characterized in that it simulates the occupancy and non-occupancy situation of a vehicle with respect to the LOOP.

The RTU-DLC (Detector Local Controller: 180) performs a vehicle detection function through this, and the result is transmitted to the Smart Sensor Node unit 320 through the CAN BUS.

Applying the camera module (250) module that can take pictures of the LCD (130) / LED (120) window seen by test personnel, and based on this, by utilizing the AI-Edge function implemented in the Smart Sensor Node part (320), the current operating state to test the RTU-DLC (180).

The camera unit 250 may be connected to the smart sensor node unit 320, but in the present invention, it is connected to the interface module 200 and included as one component of the interface module.

Referring to Figure 7, it is as follows.

This device is a module under test LSD (Legacy Sensor Device)- Railway Temp. It is characterized in that the temperature sensor is tested with the measurement module 190 through the temperature test chamber.

The temperature data obtained by driving and analyzing the legacy sensor of the module under test is transmitted to the gateway device 400 through wireless.

7 does not pass through the interface module.

Referring to FIG. 8, it is as follows.

In the automated test device test method for testing the automated test device,

It has a test selection step (S1000) of selecting a target for testing the RTU device (100).

After the test selection step (S1000), an interface module step (S2000) of designing and testing the interface module 200 is provided.

After the interface module step (S2000), there is a profile test step (S3000) of testing the RTU device 100 according to the test profile.

A test result step (S4000) of displaying the test result of the RTU device 100 by using the edge AI by using the interface module 200 in the sensor node unit 300 with the data obtained in the profile test step (S3000) have

It has a data transmission step (S5000) of transmitting the defect presence/absence data of the test result step (S4000) to the gateway device (4000).

After the data transfer step (S5000), it is to implement an automated test device test method having a result derivation step (S6000) of transmitting to the server 500 to derive and analyze the result.

The terms or words used in this specification and claims should not be construed as being limited to ordinary or dictionary meanings, and the inventors may appropriately define the concept of terms in order to explain their invention in the best way. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention based on the principle that there is.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are only one of the most preferred embodiments of the present invention, and do not represent all the technical ideas of the present invention, so at the time of this application, they can be replaced. It should be understood that there may be many equivalents and variations.

100: RTU device 110: input/output terminal unit 120: LED 130: LCD 140: power unit 150: LSD device
160: temperature sensor unit 170: RTU device for traffic signals 180: RTU device for vehicle detection
190: RTU device for temperature measurement
200: interface module 250: camera unit
300: sensor node unit 320: smart sensor node unit 340: simple sensor node unit
400: gateway device
500: server

Claims (16)

RTU device;
an interface module configured to perform at least one function among a sensor unit for testing the RTU device, an image recognition unit, an aging test unit, and an error detection unit;
a sensor node unit connecting the interface module;
Automated test apparatus, characterized in that consisting of; gateway device for receiving the data collected by the sensor node unit. The automated test apparatus according to claim 1, wherein the sensor node unit is composed of a smart sensor node unit configured by wire and a simple sensor node unit configured wirelessly. The automated test apparatus according to claim 1, wherein the RTU device is composed of one and the sensor node unit and the interface module are composed of a plurality of pieces. The automated test apparatus according to claim 1, wherein each of the RTU device, the sensor node unit, and the interface module is configured in plurality. The method of claim 1, wherein the sensor unit collects one or more sensor information from an acceleration sensor, a human body sensor, a distance sensor, a temperature sensor, a fire sensor, a voltage sensor, a current sensor, a pressure sensor, a vibration sensor, a flow sensor, and a geomagnetic sensor. An automated test apparatus characterized in that it has a configuration. The method of claim 1, wherein the image recognition unit configures a camera unit to monitor the state of the RTU device,
An automated test device characterized in that it is configured to monitor the RTU device and recognize the expression content of the RTU device, and to determine whether or not it is normal through artificial intelligence learning. The automated test apparatus according to claim 1, wherein the image recognition unit has a configuration to efficiently perform image recognition, logging, search, and output of inspection data. The automated test apparatus according to claim 1, wherein communication between the interface module and the sensor node unit is configured to enable Ethernet and CAN wired communication. The automated test apparatus according to claim 1, wherein the interface module configures the RTU device to support real-time decision-making through at least one of data acquisition, data storage, data preprocessing, data analysis, and data diagnosis. The automated test apparatus according to claim 1, wherein the interface module is configured to acquire data of the RTU device through signal processing technology of fine signal detection and noise cancellation. The method of claim 1, wherein the interface module automatically performs an input/output test and function evaluation according to a test profile designed for the RTU device, and performs an aging test for a predetermined time to evaluate defects and output a report. Automated test apparatus, characterized in that. The automation according to claim 1, characterized in that the interface module is configured as an I/O dedicated interface module for an input/output terminal I/O port necessary for testing the RTU device to transmit/receive data to and control the sensor node unit. test device. The method of claim 1, wherein a camera is configured in the image recognition unit of the interface module to test whether the LED of the RTU device is turned on and whether the LCD is functional, and configured to recognize the display contents of the LED and the LCD. Automated test apparatus, characterized in that configured to determine the presence or absence. The automated test device according to claim 1, wherein the gateway device is configured to collect and transmit data collected by the sensor node unit to a server. The automated test device according to any one of claims 1 to 14, wherein the gateway device is configured to collect data, set test conditions including an AI-Edge technique, and analyze results to derive results. In the automated test device test method for testing the automated test device of any one of claims 1 to 14,
a test selection step of selecting a target for testing the RTU device;
an interface module step of designing and testing the interface module after the test selection step;
a profile test step of testing the RTU device according to a test profile after the interface module step;
a test result step of displaying a test result of the RTU device by utilizing edge AI using the interface module in the sensor node unit for the data obtained in the profile test step;
a data transfer step of transferring the defect/absence data of the test result step to the gateway device;
The automated test apparatus test method, characterized in that it has a result derivation step of transmitting to the server after the data transfer step to derive and analyze the result.

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