KR20230131415A - Guidance system equipped with monitoring devices and self-diagnosis functions - Google Patents

Abstract

The present invention provides a guidance device that outputs a set output pattern to provide guidance information, a monitoring device that photographs the output pattern, and compares the output measurement value of the guidance device with an output standard value to determine whether the guidance device has a defective output, and determines whether the output is defective. If it is determined, a monitoring device and a guidance system equipped with a self-diagnosis function are disclosed, which includes a control device that compares the captured image of the monitoring device with the reference image to determine the cause of the output defect.

Description

Guidance system equipped with monitoring device and self-diagnosis function {GUIDANCE SYSTEM EQUIPPED WITH MONITORING DEVICES AND SELF-DIAGNOSIS FUNCTIONS}

The present invention relates to a monitoring device that self-diagnoses output defects of a guidance device and determines the cause of the output defects using a monitoring device, and a guidance system equipped with a self-diagnosis function.

<About conventional electronic sign self-diagnosis>

Electronic signs are used to provide various information such as advertisements and traffic information, and include LED modules to output information. The LED module includes a plurality of LEDs in a matrix form in units of pixels or dots.

Electronic signboards may have output problems due to aging, poor connection, or power supply problems. Typically, the causes of poor output of electric signs include defects in the LED itself due to aging of the LED, defects in the module driver that packages the LED and controls LED operation, defects in the power supply that supplies power to the module driver, and the power supply and module. There may be various reasons, such as defects in the wires connecting the drivers.

Patent documents described as prior art are technologies for self-diagnosing poor output of electronic display boards. Patent Document 1 measured the voltage of the LED pixel to determine whether the LED pixel was broken or the connector was poorly connected.

Patent Document 2 measured the voltage of the row address and column address lines of the LED panel and compared the measured voltage with a time table to determine whether the LED was defective.

Patent Document 3 compared the calculated current value of the LED module and the measured current value to determine whether the LED module was defective.

Patent Document 4 photographed an electronic signboard using CCTV to monitor a set area, and detected defective dots using the brightness, diameter, spacing, number, or external illumination value of the dots in the captured image.

However, Patent Documents 1 to 4 only identified output defects of electronic display boards, and there is a problem in that they do not implement technology to determine the cause of output defects.

As mentioned above, there are various causes of poor output of electronic signs. In order to resolve the cause, the manager must decide whether to collect and repair the electronic display board with the output failure, replace some parts and repair it directly on site, or prepare parts in advance to determine which part is defective and dispatch to the site. .

In other words, in the past, only output defects in electronic display boards were identified, and the cause of the output defects could not be determined, causing many difficulties for managers dispatched to the site.

Only the electronic signboard can exist at the site, or it can be fixed and installed on a support pole or smart pole along with CCTV and the electronic signboard. However, in the past, it is not possible to provide a function to determine the cause of defective output when only an electronic signboard exists or when it exists together with CCTV.

<About aging of conventional electronic signs>

In the past, defects in the electronic signboard were detected through aging based on the voltage drop rate during the production process of the electronic signboard, as shown in Patent Document 5. For reference, Patent Document 6 considers changes in LED characteristics depending on the usage environment of LEDs, detects LED deterioration due to long-term use, detects deterioration factors in advance, and corrects the luminous characteristics.

In other words, the possibility of an electronic signboard having output defects is low in the beginning, but if used for a certain period of time, the luminous characteristics of the LED may be slightly reduced in response to the environment of the site where the electric signboard is installed, such as rain, snow, temperature, or humidity, and the output of the electric signboard may be slightly reduced. The output standard values such as voltage and current of the LED to determine defects must be corrected according to the field situation.

However, in the past, there is a problem in that the reliability of output defect inspection is very low because an output standard value for determining output defects is not provided in consideration of LED aging.

<Regarding communication failures due to natural disasters or calamities>

Conventional communication devices receive guidance information about disasters such as natural disasters or wars from a server or PC and provide it to the electronic signboard, and the electronic signboard outputs the guidance information. However, in the past, when natural disasters such as lightning, flooding, or earthquakes occur or disasters occur, communication devices may malfunction, and there is a problem in that guidance information about the disaster cannot be output at the time when the electronic signboard should actually function.

Additionally, in the past, there was a problem in that it was impossible to tell whether the electronic sign board had failed due to a natural disaster or calamity due to a communication failure in the server or PC.

Conventionally, as shown in Patent Document 7, guidance information can be received using a PC or an infrared remote control and output on an electronic signboard. However, conventionally, since guidance information is output using a PC in general situations, the short-distance communication module that receives the signal from the infrared remote control must always be activated, which has the problem of increased power consumption.

In general, communication devices and electronic signboards that receive guidance information through a PC or server can be exposed to the outside, and short-distance communication modules such as infrared, Wi-Fi, or ZigBee are small and can be installed and protected inside a support.

Conventionally, natural disasters or catastrophes can cause failures not only in communication devices but also in electronic display boards, so when a communication device malfunction occurs, it is necessary to first determine whether there is a malfunction in the electronic display board. However, this technology is currently lacking.

Korean Patent No. 10-0352508 Korean Patent No. 10-1020700 Korean Patent No. 10-1694899 Korean Patent No. 10-2120854 Korean Patent No. 10-1489948 Korean Patent No. 10-1191150 Korean Patent No. 10-1473962

In order to solve the above problem, the present invention compares the output measurement value of the guidance device and the output reference value to determine whether the guidance device has an output defect. If it is determined that the output is defective, the cause of the output defect is compared with the captured image of the monitoring device and the reference image. It provides a guidance system equipped with a monitoring device to determine and a self-diagnosis function.

A guidance system equipped with a monitoring device and self-diagnosis function according to an embodiment of the present invention for the above problem to be solved includes a guidance device 200 that provides guidance information by outputting a set output pattern; The output measurement value of the monitoring device 500, which photographs the output pattern, and the guidance device are compared with the output standard value to determine whether the guidance device has an output defect. If it is determined that the output is defective, the captured image of the monitoring device is compared with the reference image. It is characterized by including a control device 100 that determines the cause of output failure.

The control device may store a plurality of output reference values for each output pattern and environment, and determine the degree of output defect for the guidance device in response to the environment at the time of measurement and the selected output pattern.

The present invention can reduce the power consumption of the monitoring device by operating the monitoring device when it is determined that there is an output defect, and can provide smooth maintenance for the manager by determining the cause of the output defect.

Figure 1 is a block diagram showing a guidance system equipped with a self-diagnosis function according to a first embodiment of the present invention.
FIG. 2 is a block diagram showing the measuring device of FIG. 1 in detail.
Figure 3 is a block diagram showing a guidance system equipped with a self-diagnosis function according to a second embodiment of the present invention.
Figure 4 is an example showing a method of operating a guidance system when a guidance device is present.
Figure 5 is an example showing a method of operating a guidance system when a guidance device and a monitoring device exist together.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings and the contents described in the accompanying drawings, but the present invention is not limited or limited by the embodiments.

Figure 1 is a block diagram showing a guidance system equipped with a self-diagnosis function according to a first embodiment of the present invention. The guidance system 10 includes a control device 100, a guidance device 200, and a power supply device 300. Includes. The control device 100 controls the operation of the guidance device 200 or the power supply device 300.

The guidance device 200 may be an electronic signboard, may provide various guidance information such as advertisements or traffic information, and may provide information for various purposes depending on the installation environment, but is not limited thereto. The power supply device 300 supplies power to the guidance device 200.

The control device 100, guidance device 200, or power supply device 300 may be manufactured as an integrated or separate type. The guidance device 200 may be fixed to a support pole, smart pole, or fixture for fixation.

Preferably, the guide device 200 and the power device 300 may be manufactured as separate types for convenience of maintenance. For example, in the present invention, there is no need to disassemble the guidance device 200 when the power supply device 300 fails.

FIG. 2 is a block diagram showing the measuring device of FIG. 1 in detail, and the guidance system 10 further includes a measuring device for determining the cause of output failure. The measuring device 400 measures whether there is an abnormality in the power supply of the power device 300 and whether there is an abnormality in the wire located between the power device 300 and the guidance device 200.

The measuring device 400 can generate an output measurement value of the guidance device 200, and can employ the measuring methods of Patent Documents 1 to 3, which are described as prior art. The measuring device 400 can measure power, current, voltage, or luminance values through a probe.

The measurement device 400 may include a first measurement unit 410, a second measurement unit 420, a third measurement unit 430, and a collection unit 440. The first measuring unit 410 is connected to the output terminal of the power supply device 300 where power is output. The second measuring unit 420 is connected to the input terminal where the power of the guidance device 200 is input.

The third measurement unit 430 generates an output measurement value by measuring the voltage, current, or luminance value of the LED that outputs the output pattern. For example, the third measurement unit 430 is formed on the LED output line to measure current or voltage.

The collection unit 440 includes an independent body separated from the guide device 200 and the power supply device 300 in consideration of maintenance and installation efficiency. The collection unit 440 collects the measured values of each measurement unit 410, 420, and 430 and provides them to the control device 100.

The present invention can reduce the power consumption of the measuring device 400 by driving the measuring device 400 when it is determined to be an output defect, and can determine the cause of the output defect using the measuring device 400 to facilitate smooth maintenance by the manager. can be provided.

Figure 3 is a block diagram showing a guidance system equipped with a self-diagnosis function according to a second embodiment of the present invention. The guidance system 10 may further include a monitoring device 500 in consideration of the installation environment. In the present invention, if the guidance device 200 and the monitoring device 500 are installed together in consideration of the installation environment, the cause of the output failure of the guidance device 200 can be determined through the monitoring device 500.

The monitoring device 500 may be CCTV and may have a built-in PTZ function. While filming a set surveillance area, when a control request is received from the control device 100, the output pattern of the guidance device 200 is photographed and the captured video is recorded. can be created.

The control device 100 may adopt the technology of Patent Document 4, which is described as prior art. Patent Document 4 detects omissions in output patterns, such as defective dots, using the brightness, diameter, spacing, number, or external illuminance value of dots in a captured image. However, conventionally, abnormal blinking or an unset abnormal pattern that is completely different from the output pattern may be output due to an error in the module driver included in the guidance device 200, but Patent Document 4 does not have such a solution principle.

If an output pattern is omitted in the captured image, the control device 100 can determine that it is an error in the output element included in the guidance device. If an unset abnormal pattern exists in the captured image, the control device 100 can determine that it is an error in the module driver included in the guidance device. It can be determined by:

The present invention can determine the cause of output failure for the guidance device 200 through analysis of captured images, and reduces power consumption of the monitoring device 500 by operating the monitoring device 500 when it is determined that the output is defective. It is possible to determine the cause of output defects using the monitoring device 500 to provide smooth maintenance for the manager.

When an output failure occurs, the control device 100 determines whether there is an abnormality in the power supply to the power device 300, determines whether there is an abnormality in the wire located between the power device 300 and the guidance device 200, and determines whether there is an abnormality in the power supply to the power device 300 and the guidance device 200. ), the cause of the output defect can be determined through analysis of the captured video of the output pattern.

In the present invention, when determining the cause of output failure for the guidance device 200, the measuring device 400 and the monitoring device 500 can be used together, and the cause can be determined more accurately.

Conventionally, the aging test of the electric sign board was performed during the production process of the electric sign board as shown in Patent Document 5, but there is a problem in that it is difficult to perform the aging test after a certain period of time has passed after the electric sign board is installed on site.

In the present invention, there may be some difference between the output measurement value of the guidance device 200 and the output reference value due to aging, but there may be little difference in quality between the captured image of the monitoring device 500 and the reference image.

If the difference between the output measurement value and the output standard value exceeds the set aging output fluctuation range and the difference between the captured image and the reference image is less than the set aging image quality fluctuation range, the control device 100 updates the output standard value using the aging output fluctuation range. can do.

The present invention can provide an aging test using the measuring device 400 and the monitoring device 500 even after a predetermined period of time has elapsed after installing the guiding device 200, and the function of the guiding device 200 is reduced due to aging. Even if part of the guide device 200 is lost, the guide device 200 can be used further, and the lifespan of the guide device 200 can be extended.

As in Patent Document 6, the present invention can change the output of the LED depending on the environment such as rain, snow, temperature and humidity, can include a plurality of output patterns for each type of guidance information, and can check for output defects of the guidance device 200. Even so, output patterns that are unrelated to the guidance information and cause confusion among users should not be output.

In order to solve this problem, the control device 100 stores a plurality of output reference values for each output pattern and environment, and determines the degree of output defect for the guidance device 200 in response to the environment at the time of measurement and the selected output pattern. can do.

The present invention can efficiently adjust the manager's maintenance schedule by determining the degree of output defect for the guidance device 200 using a plurality of output reference values.

If the output defect of the guidance device 200 installed in a specific area is extremely minor and there are no problems with information expression, the manager postpones maintenance of the guidance device 200 installed in the specific area and performs maintenance starting from the area where the problem is more severe. can do.

When determining the degree of output defect, the control device 100 can determine whether an output pattern can be output in an output area excluding the area of output defect. For example, when a defective dot occurs in the guidance device 200, the control device 100 determines whether the output pattern can be output in an output area excluding the area where the defective dot occurs, such as by changing the display position of the output pattern or reducing it.

Figure 4 is an example showing how the guidance system operates when a guidance device is present, and Figure 5 is an example showing how the guidance system operates when a guidance device and a monitoring device exist together.

The present invention can reduce the loss of power consumption by comparing the output measurement value of the guidance device 200 and the output reference value at each set cycle and using the measuring device 400 or monitoring device 500 when an output failure occurs. there is.

The guidance device 200 may be composed of a plurality of screens, each screen may include at least one LED module, and an output defect of each screen may be determined.

Figure 6 is a block diagram showing a guidance system equipped with a self-diagnosis function according to a third embodiment of the present invention. The guidance system 10 further includes a dedicated communication device 600 and a short-distance communication device 700. do.

The dedicated communication device 600 receives guidance information from the server or PC 30, and the short-distance communication device 700 provides communication at a predetermined distance. The short-range communication device 700 may be equipped with a short-range communication function such as infrared, Wi-Fi, Bluetooth, or ZigBee, and may provide a wired length up to a predetermined distance.

The control device 100 determines whether a failure of the guidance device 200 also occurs when a failure of the dedicated communication device 600 occurs, and if it is determined that the guidance device 200 is non-failure, it generates non-failure status information and The communication device 700 is driven in activation mode.

The guidance device 200 outputs guidance information received from the dedicated communication device 600 when the dedicated communication device 600 operates normally, and receives it from the short-distance communication device 700 when a failure of the dedicated communication device 600 occurs. Prints out guidance information.

In the present invention, it is necessary to check whether there is a failure of the guidance device 200 as well as the dedicated communication device 600 due to a natural disaster or calamity, and by determining whether the guidance device 200 is disabled, the short-distance communication device 70 is used. Radio waves must be transmitted in order for the server or PC 30 to know the status of the electronic signboard.

Figure 7 is an example showing a method of operating a guidance system using a communication device. The present invention determines whether a failure of the guidance device 200 also occurs when a failure of the dedicated communication device 600 occurs, and determines whether a failure of the guidance device 200 occurs. When determined to be non-faulty, non-fault status information is generated and the short-distance communication device 700 is driven in an active mode, thereby reducing the power consumption of the short-distance communication device 700 and reducing the power consumption by natural disasters or calamities. Even if a failure of the communication device 600 occurs, guidance information can be output and status information about the status of the guidance device 200 can be provided.

When the short-distance communication device 700 is connected to the remote terminal 50, it can transmit non-failure status information to the remote terminal 50 and receive guidance information from the remote terminal 50.

Conventionally, the remote terminal 50 was used only as an input for guidance information, but the present invention can also be used to receive information on the status of the guidance device 200 and transmit the situation.

The control device 100 can be driven in a simple determination mode that determines a failure of the guidance device 200 when a failure of the dedicated communication device 600 occurs and a precise determination mode that determines a failure of the guidance device 200 at set intervals. there is.

The simple determination mode can determine whether the output is defective by comparing the output measurement value of the guidance device 200 and the output reference value. In the precise determination mode, when an output failure of the guidance device 200 occurs, it measures whether there is an abnormality in the power supply of the power device 300 and whether there is an abnormality in the wire located between the power device 300 and the guidance device 200. The cause of the output defect can be determined using the monitoring device 500 that generates a captured image by photographing the output screen of the measuring device 400 or the guidance device 200.

In the present invention, since maintenance of the guidance device 200 may be difficult in urgent situations such as natural disasters or calamities, the control device 100 can be driven in a simple discrimination mode rather than a net discrimination mode.

10: Guidance system 30: Server or PC
50: remote terminal 100: control device
200: Guidance device 300: Power device
400: measuring device 410: first measuring unit
420: second measuring unit 430: third measuring unit
440: collection unit 500: monitoring device
600: Dedicated communication device 700: Short-distance communication device

Claims (2)

A guidance device 200 that provides guidance information by outputting a set output pattern;
A monitoring device 500 that photographs the output pattern, and
A control device (100) that compares the output measurement value of the guidance device and the output standard value to determine whether the guidance device has an output defect, and if it is determined that the output is defective, compares the captured image of the monitoring device with the reference image to determine the cause of the output defect. A guidance system equipped with a monitoring device and a self-diagnosis function, comprising: According to paragraph 1,
The control device stores a plurality of output reference values for each output pattern and environment, and determines the degree of output defect for the guidance device in response to the environment at the time of measurement and the selected output pattern. A monitoring device and self-diagnosis function are provided. Equipped with a guidance system.