KR102043946B1 - Electronic desk system with power saving mode switching function and idle time automatic fault diagnosis function - Google Patents

Abstract

Disclosed is an electronic desk system with a power saving function and an automatic fault diagnosis function for every device characteristic. According to an embodiment, the electronic desk system comprises: a main controller performing a power saving function in different methods for every device while integrally managing power control of a plurality of devices connected to the main controller, and performing fault diagnosis for every device by additionally using at least one of an HDMI input and output connection state and a communication state along with power consumption of each device; and a smart power controller blocking power for every device when entering a power saving mode under the control of the main controller and automatically supplying power when switching the power saving mode into a normal mode.

Description

Electronic desk system with power saving mode switching function and idle time automatic fault diagnosis function

The present invention relates to an electronic teaching system, and more particularly, to an electronic teaching system having a power saving function and an automatic failure diagnosis function of all devices constituting the electronic teaching table.

The main controller is installed inside the electronic teaching desk, and receives input from peripheral devices such as PCs, laptops, A / V players, etc. in classrooms or conference rooms of schools, academies, public institutions, and businesses. It has a basic function of outputting an image on a display such as a digital whiteboard and outputting an audio through an audio amplifier or a directly connected speaker. In addition, it has functions such as the up / down adjustment of the elevation on which the projector is placed and the up / down adjustment of the electric screen.

In the case of conducting classes using such an electronic teaching desk, most of the devices are not left in operation in case of continuous lectures or lecture hours with a lot of rest. This is because when you turn on and off the peripherals connected to the main controller every time during the break and repeat the operation such as shutting down / starting the PC, it can be inconvenient for the instructors who are not familiar with the equipment and consume a lot of time. . This inevitably leads to power consumption due to the operation of devices during breaks without lectures.

 In addition, if the peripheral devices are broken, cross talk is inevitable because the lecture is difficult to proceed in the corresponding classroom. To prevent this, the administrator must check all the devices connected to the electronic teaching desk to check for failure. However, the process of checking all devices in all classrooms is cumbersome and time consuming, increasing management costs.

According to an embodiment of the present disclosure, the user can conveniently switch all the peripheral devices to the power saving mode or automatically return to the normal mode from the single touch input or automatically, without having to turn the peripheral devices on and off every time. This paper proposes an electronic teaching system that can reduce power wasted time when not in use and automatically provides fault diagnosis of peripheral devices.

The electronic teaching system according to an embodiment of the present invention performs power saving functions in different ways for each device while managing power control of a plurality of devices connected to the main controller, and uses a high definition multimedia interface together with power consumption of each device. : HDMI, hereinafter referred to as 'HDMI') Main controller performs fault diagnosis for each device by using at least one of input / output connection status and communication status, and power is supplied to each device when entering power saving mode under the control of main controller. It includes a smart power controller that shuts off and automatically supplies power when switching from the power saving mode to the normal mode.

When the main controller switches from the normal mode to the power saving mode, the main controller checks the device information registered in the device list, and the device identified through the device information requires a boot to be referred to as a personal computer (PC). ) If the device is a device, only the power saving mode request message is transmitted to the management program of the PC-type device through the network, and power is not cut off separately.The confirmed device is a projector or audio / visual (Audio / Visual: A / V, A / V ') player, send power off message to projector or A / V player via output IR signal or serial communication and control smart power controller to cut off power supply to projector or A / V player The identified device does not need to boot or can be powered off via Infrared (IR) or serial communication. If the other device is controlled by the pre-message transmission or output IR signal or a power-off by using the serial communication (off) without a smart power controller operation it can be blocked only the power supply.

The main controller includes a power control unit that provides power saving function of the main controller itself. The power control unit cuts off the internal power of all other blocks of the main controller except the microcomputer when entering the power saving mode, and switches to the normal mode. The power supplied only to the microcomputer can be supplied to all other blocks of the main controller.

As the main controller saves the setting values for each connected device when entering the power saving mode, the main controller can return to the normal mode using the stored setting values for each device.

The smart power controller includes a power distribution unit that distributes power to each device connected to the main controller, a power measurement unit measuring power consumed by each device from the power distributed by the power distribution unit, and a power measurement unit. If the power consumption is out of the range of the predetermined normal state may include a power control unit to determine the failure of the corresponding device to cut off the power.

The main controller makes a first judgment on the fault by using the moving average value of the power consumption of each connected device, a second judgment on the fault by HDMI connection diagnosis, and additional diagnosis through LAN or serial communication with the connected device. Can be used to determine whether there is a failure.

The main controller determines whether the HDMI input connector is malfunctioning by checking whether an HDMI input is inputted from the HDMI input unit, but whether the HDMI input connector is normally supplied through an HDMI cable and the input HDMI signal format is If all of the video formats are satisfied, it is determined that the HDMI input connector is in a normal state, and it is determined whether a HDMI signal is output from the HDMI output unit to determine whether the HDMI output terminal is malfunctioning. If the plug is in the normal level, whether the HDMI output device and the serial communication via the HDMI cable are normal, and the signal level of the HDMI output data line is all normal, the HDMI output device is considered normal. You can judge.

The main controller measures the power consumption of the device by reading the moving average of the connected device and the device from the device list through the smart power controller when the devices connected to the main controller are powered and operating normally. Check whether it is within the preset normal operating range, and if it is out of the normal operating range, it is determined to be a failure, and if the measured power consumption is within the normal operating range, the moving average value is reflected again to reflect the measured power consumption. Calculate and save, reset the fault range of the device.

When connected to a PC through local area network (LAN) communication, the main controller requests the PC to diagnose whether the device list in the PC is normal and checks it from the PC within a preset time. Check whether the result is received and if not, judge it as a failure, and if the test result is received within a preset time, judge whether or not the received test result is normal and judge the test result as non-normal and determine the serial communication. When connected to the device through the serial communication to determine whether the failure is normal or not, the test result can be determined depending on whether the device list in the PC is the same as the normal device list.

If the main controller does not use the electronic teaching desk and the power of the devices is off, the main controller supplies power to the devices through the smart power controller and performs troubleshooting. After confirming that the device is powered on, additional power on command should be sent.In case of a normal device, send additional power on command. You can cut off the power supply of the device.

According to an electronic teaching system having a power saving function and an automatic fault diagnosis function for each device characteristic according to an embodiment, when the power saving function is performed, the power saving mode suitable for the characteristics of each device connected to the main controller maximizes the power saving effect and minimizes the switching time. can do.

In addition, when the power saving function is performed, the user may enter the power saving mode or return to the normal mode simply and quickly by one touch or automatically by the user. For example, you can easily return to the state before switching to the power saving mode by saving the setting value of each device in the power saving mode and restoring it to the normal mode.

In addition, the power controller of the main controller may be added to achieve a power saving function of the main controller. If the connected device is a PC-type device, the switching time can be minimized by sending a power saving mode change command and a normal mode return command to the PC without booting.

On the other hand, the electronic teaching system can maximize the diagnosis effect and enhance the reliability by performing the diagnosis according to the characteristics of the connected device when performing the diagnosis function. For example, the first judgment is made by using the moving average value of the power consumption of the connected device, the second judgment is made by the HDMI connection diagnosis, and the third judgment is made by the additional diagnosis through LAN or serial communication to maximize the effect of failure diagnosis and reliability. To strengthen. In case of fault diagnosis using the moving average value of power consumption, the accuracy of fault diagnosis can be improved by reflecting fluctuations in power consumption due to the aging of equipment.

In addition, it is possible to determine whether the connected device has failed in both the idle time before and after the lecture and the lecture time. It is possible to promptly notify the administrator of the fault finding through the breakdown diagnosis of idle time before and after the lecture, to prevent the cross-talk of the lecture and to take countermeasures. During the lecture, it is possible to detect a short circuit or disconnection in real time as a fault diagnosis.

Furthermore, it is possible to reduce maintenance costs by increasing convenience of troubleshooting and minimizing diagnosis time by automatically diagnosing all peripheral devices without an administrator's operation of individual devices.

1 is a view showing the configuration of an electronic teaching system according to an embodiment of the present invention,
2 is a view showing a detailed configuration of the main controller of FIG. 1 according to an embodiment of the present invention;
3 is a diagram illustrating a detailed configuration of the smart power controller of FIG. 1 according to an embodiment of the present invention;
4 is a diagram illustrating a screen for switching between a power saving mode and a normal mode according to an embodiment of the present invention;
5 is a diagram illustrating a process of switching from a normal mode to a power saving mode according to an embodiment of the present invention;
6 is a diagram illustrating a process of switching from a power saving mode to a normal mode according to one embodiment of the present invention;
7 is a diagram illustrating a failure diagnosis process at idle time before and after lectures according to an embodiment of the present invention;
8 is a diagram illustrating a failure diagnosis process in lecture time according to one embodiment of the present invention;
9 is a view illustrating a detailed process of additional failure diagnosis through communication according to an embodiment of the present invention from the main controller position;
10 is a view illustrating a detailed process of additional diagnosis of failure through communication according to an embodiment of the present invention from the perspective of a PC;
FIG. 11 is a diagram illustrating a connection relationship between a main controller and a peripheral device of an electronic teaching system having a power saving function and an automatic failure diagnosis function for each device characteristic according to an embodiment of the present invention.

Advantages and features of the present invention, and methods for achieving them will be apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various forms, and only the embodiments of the present invention make the disclosure of the present invention complete and the general knowledge in the technical field to which the present invention belongs. It is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

In describing the embodiments of the present disclosure, when it is determined that a detailed description of a known function or configuration may unnecessarily obscure the subject matter of the present disclosure, the detailed description thereof will be omitted, and the following terms are used in the embodiments of the present disclosure. Terms are defined in consideration of the function of the may vary depending on the user or operator's intention or custom. Therefore, the definition should be made based on the contents throughout the specification.

Combinations of each block of the block diagrams and respective steps of the flowcharts may be performed by computer program instructions (execution engines), which may be executed by a processor of a general purpose computer, special purpose computer or other programmable data processing apparatus. As such, instructions executed through a processor of a computer or other programmable data processing apparatus create means for performing the functions described in each block of the block diagram or in each step of the flowchart.

These computer program instructions may also be stored in a computer usable or computer readable memory that can be directed to a computer or other programmable data processing device to implement functionality in a particular manner, and thus the computer usable or computer readable memory. The instructions stored therein may also produce an article of manufacture containing instruction means for performing the functions described in each block of the block diagram or in each step of the flowchart.

In addition, computer program instructions may be mounted on a computer or other programmable data processing device, such that a series of operating steps may be performed on the computer or other programmable data processing device to create a computer-implemented process that may be executed by the computer or other programmable data. Instructions for performing the data processing apparatus may also provide steps for executing the functions described in each block of the block diagram and in each step of the flowchart.

In addition, each block or step may represent a portion of a module, segment or code that includes one or more executable instructions for executing specific logical functions, and in some alternative embodiments referred to in blocks or steps It should be noted that the functions may occur out of order. For example, the two blocks or steps shown in succession may, in fact, be performed substantially concurrently, or the blocks or steps may be performed in the reverse order of the corresponding function, as required.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, embodiments of the present invention illustrated in the following may be modified in many different forms, the scope of the present invention is not limited to the embodiments described in the following. Embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art.

1 is a view showing the configuration of an electronic teaching system according to an embodiment of the present invention.

Referring to FIG. 1, the electronic teaching system 1 includes a main controller 2, a peripheral device 3, and a smart power controller 4.

The electronic teaching system 1 connects the peripheral device 3 to the main controller 2 installed inside the electronic teaching table. The electronic teaching table can be implemented in the form of an enclosure. The electronic teaching system 1 not only controls the input / output of various input / output devices, but also controls devices in the classroom such as electric screens and lighting. The peripheral device 3 is a device connected to the main controller 2, for example, a personal computer (PC, hereinafter referred to as a 'PC') 3-1, a notebook computer, and an audio / visual (Audio / Visual: A / V, hereinafter referred to as 'A / V') Input devices such as player (3-5), microphone (3-2), touch screen (3-3), projector, monitor, audio amplifier (3-4) Output devices such as;) and other devices such as electric screens and elevations. Each device corresponding to the peripheral device 3 is not directly supplied with power separately, but supplies the necessary power (for example, AC power and DC power) through the smart power controller 4 under the control of the main controller 2. To be supplied.

The smart power controller 4 is a hardware-added part, and shuts off power for each device corresponding to the peripheral device 3 when entering the power saving mode, and automatically supplies power when switching from the power saving mode to the normal mode. The smart power controller 4 may cut off the power of the device that does not need booting among the peripheral devices 3, and may not cut off a separate power for a device that requires booting such as a PC. In order to perform the power saving function and troubleshooting of the PC, the PC may be prepared to install a program to monitor the state of the PC and enter the sleep mode through network communication.

The main controller 2 is provided with a power saving control unit for integrally managing the power control in a part which is not an essential part inside. The main controller 2 controls power saving in a different manner for each device while managing the power control of the peripheral device 3 connected to the main controller 2. The power saving process for each device will be described later with reference to FIG. 6. In addition, the main controller 2 additionally uses at least one of a high definition multimedia interface (HDMI), an input / output connection state and a communication state together with power consumption of each device. Perform troubleshooting. The failure diagnosis process for each device will be described later with reference to FIGS. 7 to 10.

When performing the power saving control function through the power control, the main controller 2 checks the device information registered in the internal device list and checks the smart power when receiving the user input for switching from the normal mode to the power saving mode by the user. In accordance with the type of the device identified by the controller (4) in a suitable way to cut off the power of the device to switch to the power saving mode.

For example, if the device identified in the device list is a PC-type device that requires booting after power-on, such as a PC, a notebook, a server, etc., the main controller 2 may enter a power saving mode in a management program of the PC device through a network. Only send a message requesting to enter, and do not cut off the power separately.

As another example, when the device identified in the device list is a remote control using an output infrared (IR) signal or a projector that can be powered off through serial communication, the main controller 2 ) Transmits a power off message to the projector through an output IR signal or serial communication, and then controls the smart power controller 4 to cut off the power supply of the projector.

As another example, when the device identified in the device list is a remote controller using an output IR signal or the like, and the A / V player can be powered off through serial communication, the main controller 2 may output an output IR signal. After transmitting a power off message to the A / V player via serial communication, the smart power controller 4 is controlled to cut off the power supply of the A / V player.

As another example, a device identified in the device list does not require booting of a touch screen, wireless microphone, audio amplifier, monitor, etc. that cannot be controlled remotely or serially, or cannot be powered off via output IR or serial communication. In the case of other devices, these other devices have a short on / off time, so that the smart power controller 4 can be controlled by controlling the smart power controller 4 without a power off operation using a prior message transmission or an output IR signal or serial communication. Shut off only the supply.

FIG. 2 is a diagram illustrating a detailed configuration of the main controller of FIG. 1 according to an exemplary embodiment.

1 and 2, the main controller 2 according to an embodiment may include an HDMI input unit 21, an HDMI output unit 22, an audio processing unit 23, a microcomputer 24, a power saving control unit 25, USB control unit 26, electric screen control unit 27, elevation control unit 28, local area network (LAN, hereinafter referred to as "LAN") / serial control unit 29 with the device.

The HDMI input unit 21 selects an HDMI input of an HDMI (High Definition Multimedia Interface) device (hereinafter referred to as an 'HDMI input connection device') connected to an input terminal (for example, an input port) of the main controller 2. . In this case, a predetermined number of a plurality of inputs may be selected. The HDMI output unit 22 selects an HDMI output of an HDMI device (hereinafter, referred to as an 'HDMI output connection device') connected to an output terminal (for example, an output port) of the main controller 2. The HDMI input portion through the HDMI input portion 21 and the HDMI output portion through the HDMI output portion 22 may be portions for determining whether a failure occurs.

The audio processor 23 processes a voice signal received from a wired or wireless type microphone, the USB controller 26 controls communication between the main controller 2 and a device connected via USB, and the electric screen controller 27 The up / down adjustment of the electric screen connected to the main controller 2 is controlled, and the elevation control unit 28 controls the up / down adjustment of the elevation in which the projector connected to the main controller 2 is placed. The LAN / serial control unit 29 controls communication with the main controller 2 and a device connected via LAN or serial communication.

The power saving control unit 25 performs a power saving function and a failure diagnosis function. The power saving control unit 25 according to an embodiment checks the device information registered in the internal device list when entering the power saving mode and operates the corresponding device through the smart power controller 4 in a manner appropriate to the identified device type. Switch to power saving mode. The power saving process for each device will be described later with reference to FIG. 5.

The power saving control unit 25 according to an embodiment supplies power only to the microcomputer 24 in the main controller 2 when switching from the normal mode to the power saving mode, and blocks the power supply of the remaining blocks except the microcomputer 24. do. On the other hand, when switching from the power saving mode to the normal mode, the power saving control unit 25 controls the entire block to switch to the normal mode by supplying all the power supplied only to the microcomputer 24 to all the blocks of the main controller 2. The main controller 2 is designed by separating the power supply of the microcomputer 24 from the power supply of the remaining blocks, and then controlling power saving by blocks of the main controller 2 through the power saving controller 25 when entering the power saving mode. Do. At this time, the power saving control unit 25 stores the setting value for each device of the connected device when switching to the power saving mode, and then internal power of all the blocks of the main controller 2 related to controlling the connected device except for the operation part of the microcomputer 24. The main controller 2 can be switched to a self-power saving mode by blocking.

3 is a diagram illustrating a detailed configuration of the smart power controller of FIG. 1 according to an embodiment of the present invention.

1 to 3, the smart power controller 4 according to an embodiment includes a power distribution unit 40, a power measurement unit 42, and a power control unit 44.

The power distribution unit 40 has a single unit, and the power measuring unit 42 and the power control unit 44 have as many devices as the peripheral devices. The power distribution unit 40 distributes power (eg, AC power: 220V) to each of the peripheral devices 3. The power measuring unit 42 measures the power consumed by each of the peripheral devices 3 from the power distributed by the power distribution unit 40.

The power control unit 44 supplies AC power when the peripheral device 3 uses AC power, and supplies DC power that meets the required specifications when DC power is used. The power control unit 44 according to an embodiment determines that the power consumption of the peripheral device 3 measured by the power measuring unit 42 is out of a range of a predetermined normal state, and determines that the power supply is to supply power to the peripheral device 3. Can be blocked.

4 is a diagram illustrating a screen for switching between a power saving mode and a normal mode according to an embodiment of the present invention.

Referring to FIG. 4, the electronic teaching system displays the normal mode screen 410 and the power saving mode screen 420 through a display such as a touch screen under the control of the main controller.

When the user selects the power saving button 412 on the normal mode screen 410 through a touch or the like, the user enters the power saving mode and displays the power saving mode screen 420. The power save mode screen (420) displays the “current power save mode” to return to normal mode. Touch the screen to return to the normal mode. ”A guidance message 422 can be displayed on the screen. When the user touches the power saving mode screen 420, the screen switches to the normal mode screen 410. Depending on the break time, it can be set to automatically switch to the power saving mode and the normal mode.

5 is a diagram illustrating a process of switching from a normal mode to a power saving mode according to an embodiment of the present invention.

1 and 5, the process of switching from the normal mode to the power saving mode is different for each device corresponding to the peripheral device 3, and proceeds as follows.

When the user enters the power saving mode through a user input for switching from the normal mode to the power saving mode by the user, the main controller 2 automatically checks the device information registered in the internal device list (510) and smart power. The controller 4 is controlled to convert the device into a power saving mode in a method suitable for the identified device type.

For example, if the device identified in the device list is a remote control using an output IR signal or the like, or a projector that can be powered off through serial communication (512), the output IR signal from the main controller 2 may be used. After transmitting the power off message to the projector through serial communication (514), the smart power controller 4 cuts off the power supply of the projector and enters the power saving mode (530).

If the device identified in the device list is a remote control using an output IR (Infrared) signal or the like, or an A / V player that can be powered off through serial communication (516), the output IR signal or After transmitting a power off message to the A / V player via serial communication (518), the smart power controller 4 cuts the power supply of the A / V player to enter the power saving mode (530).

If the device identified in the device list is a PC-type device that requires booting after power-on, such as a PC, a notebook, or a server (520), the main controller 2 saves power to the management program of the PC-type device via a network. Only the message requesting the entry to 522 is transmitted, and power off is not performed separately.

If the device identified in the device list is a remote control or other device that does not have serial control, such as a touch screen, wireless microphone, audio amplifier, monitor, etc., it is not necessary to boot or power off via output IR or serial communication. This is not a common device. These other devices have a short on / off time to cut off only the power supply through the smart power controller 4 without prior message transmission or power off operation using an output IR signal (524). The above-described process is repeated 526 until there is no other device by checking if there is another device.

Subsequently, the device-specific setting values are stored in the power saving mode), and then the internal power of all the blocks of the main controller 2 related to the control of the peripheral device 3 is cut off (528) except for the operation part of the microcomputer 24. The power saving mode of the main controller 2 is started (528).

In FIG. 5, a check step (512) of checking whether the checked device is a projector, a check step (516) of checking whether it is an A / V player, and a check step (520) of checking whether it is a PC-type device are performed in this order. It is only an embodiment to help understanding of the present invention, but is not implemented only in that order.

6 is a diagram illustrating a process of switching from a power saving mode to a normal mode according to an embodiment of the present invention.

1 and 6, when the display screen is touched by the user in the power saving mode state, the device confirmed by checking the device information registered in the internal device list in the same manner as when the main controller 2 enters the power saving mode. Change to normal mode according to the type. At this time, the switching method is different for each device and proceeds as follows.

The main controller 2 supplies all the blocks of the main controller 2 with the power supplied only to the microcomputer 24 when the normal mode is switched to the normal mode based on the environment in which the power of the microcomputer 24 and the remaining blocks are designed separately. Control the entire block to return to normal mode. In operation 610, the device-specific setting value of the peripheral device is restored.

Subsequently, when the normal mode is converted, the device information registered in the internal device list is automatically checked (612), and the corresponding device is converted to the normal mode in a proper manner according to the type of the device identified through the smart power controller (4). Let's do it.

For example, if the device identified in the device list is a PC-type device (614), the main controller 2 transmits a WOL message to wake up from the power saving mode via the network to the PC-type device (616). If it is not a PC-type device, and supplies power to other devices (618).

If the device identified in the device list is a projector (620), power is supplied to the projector by the smart power controller (4), and then a power on message is output from the main controller (2) via the output IR communication or serial communication. Transmit to 622.

If the device identified in the device list is an A / V player (624), the smart power controller (4) supplies power to the A / V player and then powers on the main controller (2) via output IR communication or serial communication. (on) Send a message to the A / V player (626).

If the device identified in the device list is a general device that cannot power on / off through output IR communication or serial communication, only the power is supplied from the smart power controller 4. The above process is performed repeatedly until there is no other device identified in the device list (628).

7 is a diagram illustrating a failure diagnosis process at idle time before and after steel, according to an embodiment of the present invention.

Referring to FIGS. 2, 3, and 7, before or after a lecture, a user may diagnose a failure for each device at an idle time when the user does not use the electronic lecture table. If a diagnosis is found, it is possible to respond before the lecture time by displaying it on the display screen and warning the administrator through a predetermined delivery means (e-mail or text). The troubleshooting can be done automatically at a predetermined time or manually by a troubleshooting command. In addition, during the lectures in which devices are operated, fault diagnosis is performed by monitoring power consumption of individual devices, thereby real-time monitoring of abnormal conditions such as leakage or disconnection of individual devices and determining whether there is a failure according to the monitoring. An embodiment thereof will be described later with reference to FIG. 8.

Referring to FIGS. 1 and 7, since the power is turned off by not using the electronic teacher at idle time such as before or after the lecture time, the smart power controller 4 After the power is supplied to the peripheral devices through 702, a failure diagnosis is performed. After the power on, the main controller 2 additionally transmits a power on command by sending WOL message or output IR communication or serial communication. do. For example, the device list is confirmed by checking the device information from the device information. When the identified device is the PC (706), the main controller 2 transmits a WOL message to the PC from the network (708). In the case of an A / V player (710), the main controller 2 transmits a power-on command to the A / V player through IR output communication or serial communication (712). In the case of a projector (714), the main controller (2) transmits a power on command to the projector through IR output communication or serial communication (716).

Subsequently, the main controller 2 selects a device from the device list, checks the device information of the selected device (718), and measures the amount of power consumption of the device identified through the power measurement unit 42 of the smart power controller 4. Determine whether the failure (720). The power consumption may be measured by calculating a moving average value of power consumption of each device at a predetermined time interval and a preset moving average number of samples. In this case, when the amount of power consumption is out of the preset normal range, it is recognized as a failure and transmits a warning message to the server and outputs a warning message on the display screen (722).

Subsequently, the main controller 2 may second determine whether a failure occurs through an HDMI connection diagnosis. For example, if the selected device is an HDMI input connection device 724 connected to the HDMI input, it may be determined whether the HDMI input is normal (726), and it may be determined that the HDMI input is not normal. HDMI input connectors are devices such as PCs, laptops, servers, and Blu-ray that have HDMI outputs. For example, the main controller 2 determines whether a normal HDMI signal is input from the HDMI input unit 21 to determine whether the HDMI input terminal is connected or not. The normal criterion for HDMI input is 1. The HDMI input connector shall be supplied with a normal power supply through an HDMI cable, and 2. The HDMI signal format being input shall be one of the video formats in the standard. Only when the above two conditions are normal, the HDMI input device is judged to be normal.

If the selected device is an HDMI output terminal connected device 728 connected to the HDMI output terminal, it is determined whether the HDMI output is normal (730) and determines that the HDMI output is not normal. The HDMI output connector is an A / V device such as a touch screen, a projector, or a monitor with an HDMI input terminal. For these devices, it is determined to be normal only when the HDMI output unit 22 of the main controller 2 is connected to a normal HDMI to confirm that a normal signal is output. The normal criterion of the HDMI output is 1. The hot plug of the HDMI output unit 22 should be at a normal level, 2. The serial communication with the HDMI output terminal connecting device via the HDMI cable should be normal, and 3. HDMI The signal level of the output transition-minimized differential signaling (TMDS) data line must be normal. Only when all three above are normal, it is judged that the connected device of HDMI output is normal.

Subsequently, the main controller 2 may third determine whether the failure occurs by additional diagnosis through communication with a connected device, such as a LAN or a serial. For example, if the selected device is a device 732 capable of communication, it may be checked whether additional diagnosis through communication is normal (734). In this case, if the additional diagnosis through communication is not normal, it is determined that the failure is transmitted, a failure message is transmitted to the server, and the failure message is displayed on the display screen (722).

On the other hand, if the selected device is a PC (736), the PC management program request to enter the power saving mode (738), if not the PC block the power supply of the device diagnosed failure (740). The process is repeated 742 until there are no other devices by checking if there are additional devices.

8 is a diagram illustrating a failure diagnosis process in lecture time according to an embodiment of the present invention.

1 and 8, when the devices connected to the main controller 2 are normally supplied with power, such as lecture time, the smart power controller 4 may be configured at a predetermined time interval and a preset moving average number of samples. Measure power consumption by moving average power consumption of each device. For example, a moving average value of the connected device and the device is retrieved from the electronic teaching device list (802), and the power consumption of the device is measured (804), and whether the measured power consumption is included in a preset normal operating range. If it is out of the normal operation range, it is determined as a failure and transmits a failure message to the server and displays the failure message on the screen (808).

When the measured power consumption is included in the normal operation range, the moving average value is recalculated and stored 810 reflecting the measured power consumption, and the failure range of the corresponding device is reset (812). The above process is repeated until the last device (814).

9 is a view illustrating a detailed process of additional diagnosis of failure through communication according to an embodiment of the present invention from the main controller's point of view.

2 and 9, a device connected through the LAN / serial control unit 29 of the main controller 2 may additionally diagnose whether the device has failed through communication using a LAN or a serial port of the main controller 2. Can be.

For example, when the communication target is a PC (902), the main controller 2 requests a diagnosis on whether the device list in the PC is normal through the LAN communication (908). In this case, it is checked whether a test result is received from the PC within a preset time, for example, within 1 second (910). If not, it is determined as a failure and a failure message is displayed on the screen (906). If the test result is received within a preset time, it is determined whether the received test result is normal (912). In this case, if the inspection result is not normal, a failure message is displayed on the screen (906). If the communication target is a general device other than a PC, it is determined whether or not the serial communication is normal (904) to further determine whether or not the failure, and if the serial communication is not normal, it is determined to be a failure and displays a failure message on the screen (906).

10 is a diagram illustrating a detailed process of additional diagnosis of failure through communication according to an embodiment of the present invention from the perspective of the PC.

Referring to FIG. 10, when the communication target is a PC, the PC examines a list of PC devices such as a mouse, a keyboard, an internal card, and the like connected to the PC, determines whether the list differs from a normal device list, and determines whether it is different from the normal device list. If it is determined to be a failure, and transmits a PC failure message to the main controller (1006), and if it is the same, it is determined to be normal and transmits a PC normal message to the main controller (1008). Even though the power consumption is within the normal error range through the first diagnosis, communication should be normally performed in the case of the device connected to the communication terminal. Through the above-described process, it is possible to determine whether the communication is performed normally or not.

FIG. 11 is a diagram illustrating a connection relationship between a main controller and a peripheral device of an electronic teaching system having a power saving function and an automatic failure diagnosis function for each device characteristic according to an embodiment of the present invention.

Referring to FIG. 11, the main controller 2 may be HDMI connected to an HDMI input connector and an HDMI output connector. In this case, the HDMI input terminal connecting device is a device connected to the HDMI input terminal of the main controller 2, for example, an A / V such as a PC 3-1, a notebook 32, and a Blu-ray having an HDMI output terminal. Players 3-5 and the like. The HDMI output terminal connected to the HDMI output terminal is a device connected to the HDMI output terminal of the main controller (2), for example, a touch screen (3-3), a projector (3-8), a monitor (with an HDMI input terminal) 3-9) and other A / V equipment. In addition, the main controller 2 may be connected to the microphone 3-2 to receive a voice signal, and output audio through the audio processor 23 through the audio amplifier 3-4. In the case of the HDMI output, it can be output to the screen of the monitor (3-9). The electric screen control unit 27 controls the up / down adjustment of the electric screen connected to the main controller 2, and the elevation control unit 28 controls the up / down adjustment of the elevation in which the projector connected to the main controller 2 is placed. To control.

According to the above-described apparatus and method through the detailed description, the electronic teaching system can enter the power saving mode suitable for the characteristics of each device connected to the main controller when the power saving function is performed, thereby maximizing the power saving effect and minimizing the switching time.

In addition, when the power saving function is performed, the user may enter the power saving mode or return to the normal mode simply and quickly by one touch or automatically by the user. For example, you can easily return to the state before switching to the power saving mode by saving the setting value of each device in the power saving mode and restoring it to the normal mode.

In addition, the power controller of the main controller may be added to achieve a power saving function of the main controller. If the connected device is a PC-type device, the switching time can be minimized by sending a power saving mode change command and a normal mode return command to the PC without booting.

On the other hand, the electronic teaching system can maximize the diagnosis effect and enhance the reliability by performing the diagnosis according to the characteristics of the connected device when performing the diagnosis function. For example, the first judgment is made by using the moving average value of the power consumption of the connected device, the second judgment is made by the HDMI connection diagnosis, and the third judgment is made by the additional diagnosis through LAN or serial communication to maximize the effect of failure diagnosis and reliability. To strengthen. In case of fault diagnosis using the moving average value of power consumption, the accuracy of fault diagnosis can be improved by reflecting fluctuations in power consumption due to the aging of equipment.

In addition, it is possible to determine whether the connected device has failed in both the idle time before and after the lecture and the lecture time. It is possible to promptly notify the administrator of the fault finding through the breakdown diagnosis of idle time before and after the lecture, to prevent the cross-talk of the lecture and to take countermeasures. During the lecture, it is possible to detect a short circuit or disconnection in real time by troubleshooting. Furthermore, it is possible to reduce maintenance costs by increasing convenience of troubleshooting and minimizing diagnosis time by automatically diagnosing all peripheral devices without an administrator's operation of individual devices.

So far, the present invention has been described with reference to the embodiments. Those skilled in the art will appreciate that the present invention can be implemented in a modified form without departing from the essential features of the present invention. Therefore, the disclosed embodiments should be considered in descriptive sense only and not for purposes of limitation. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

Claims (10)

Power management function of each device connected to the main controller is integrated, and the power saving function is performed in different ways for each device, and the high definition multimedia interface (HDMI) is referred to as the power consumption of each device. A main controller performing fault diagnosis for each device by further using an input / output connection state and a communication state; And
A smart power controller which cuts off power for each device when entering a power saving mode under the control of the main controller and automatically supplies power when switching from the power saving mode to the normal mode; Including;
Main controller
The HDMI input unit determines whether a normal HDMI signal is input to determine whether the HDMI input connector is malfunctioning, and whether the HDMI input connector supplies normal power through an HDMI cable and whether the input HDMI signal format is one of the standard video formats. If it satisfies all of them, it is determined that the connected HDMI input device is normal.
Check if HDMI signal is outputted from the HDMI output unit to determine whether the HDMI output terminal is malfunctioning, and whether the hot plug of the HDMI output unit is in normal level or if the serial communication with the HDMI output terminal is normal through the HDMI cable. Whether the HDMI output terminal is in a normal state when all of the signal level of the HDMI output data line is normal or not. The method of claim 1, wherein the main controller
When switching from the normal mode to the power save mode, check the device information registered in the device list.
If the device identified through the device information is a personal computer (PC) device that requires booting, only the power saving mode request message is transmitted to the management program of the PC device through the network and No blocking,
If the identified device is a projector or audio / visual (Audio / Visual: A / V) player, power off message to the projector or A / V player via output IR signal or serial communication. Control the smart power controller to cut off the power supply to the projector or A / V player,
If the identified device does not require booting, or is output Infrared (IR), or any other device that cannot perform a power off function via serial communication, it may send a pre-message or output IR signal or serial. Electronic teaching system, characterized in that to cut off the power supply only by controlling the smart power controller without a power off operation using communication. The method of claim 1, wherein the main controller
A power control unit providing a power saving function of the main controller itself; Including;
Power control unit
When the power saving mode is entered, all the other blocks of the main controller except for the microcontroller are turned off, and when switching to the normal mode, the power supplied to the microcomputer is supplied to all the other blocks of the main controller. Teaching system. The method of claim 1, wherein the main controller
An electronic teaching system, characterized in that when the device enters the power saving mode, it saves the setting values for each connected device, and then returns to the normal mode using the stored setting values for each device. The method of claim 1, wherein the smart power controller
A power distribution unit that distributes power to each device connected to the main controller;
A power measuring unit measuring power consumed by each device in the power distributed by the power distribution unit; And
A power control unit for determining that the power consumption of the device measured by the power measurement unit is out of a range of a preset normal state and disconnecting the power by determining that the device is a failure;
Electronic teaching system comprising a. The method of claim 1, wherein the main controller
The primary diagnosis is made by fault diagnosis using the moving average value of power consumption of each connected device.
HDMI connection diagnosis is used to make a second determination
Electronic teaching system, characterized in that the third determination of the failure by a local area network (LAN, hereinafter referred to as "LAN") or serial communication with the connected device. delete Performs power saving function in different ways for each device while managing power control of multiple devices connected to the main controller, and uses each device by using at least one of HDMI input / output connection status and communication status together with power consumption of each device. A main controller for performing troubleshooting; And
A smart power controller which cuts off power for each device when entering a power saving mode under the control of the main controller and automatically supplies power when switching from the power saving mode to the normal mode; Including;
Main controller
When the devices connected to the main controller are supplied with power and operate normally, load the average values of the connected devices and devices in the device list through the smart power controller to measure the power consumption of the device.
Check whether the measured power consumption is within the preset normal operating range, and if it is out of the normal operating range, it is determined as a failure.
When the measured power consumption is within the normal operating range, the electronic teaching system, recalculating and storing the moving average value to reflect the measured power consumption, and to reset the failure range of the device. Performs power saving function in different ways for each device while managing power control of multiple devices connected to the main controller, and uses each device by using at least one of HDMI input / output connection status and communication status together with power consumption of each device. A main controller for performing troubleshooting; And
A smart power controller which cuts off power for each device when entering a power saving mode under the control of the main controller and automatically supplies power when switching from the power saving mode to the normal mode; Including;
Main controller
When connected with a PC via LAN communication, request the PC to diagnose whether the device list in the PC is normal.
Check whether the test result is received from the PC within the preset time and if not, judge it as a failure,
If the test result is received within a preset time, it is determined whether the received test result is normal, and if the test result is not normal, it is determined as a failure.
When connected to the device through serial communication, check whether serial communication is normal and determine whether there is a failure.
And the test result is determined according to whether the device list in the PC is the same as the normal device list. The method of claim 6, wherein the main controller
If the device is turned off due to the absence of an electronic teaching desk, the device is powered off and the device is powered through a smart power controller.
Check the device list to check the device from the device information, and after the device is turned on, additional power on command should be sent. ,
When the failure diagnosis results in a failure, the electronic teaching system, characterized in that to cut off the power supply of the device through the smart power controller.

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