KR100719815B1 - Digital Motor Controller system including use of the Video Monitering System - Google Patents

Abstract

The present invention relates to a digital motor control system including a video surveillance function, the digital motor control system for controlling a motor, the camera for photographing the state of the motor, and the image data captured by the camera in the frame unit If the first memory and the data of the operating state by measuring the voltage and current of the motor is out of the preset range in the CPU, it is determined that there is an event in the motor, and if there is the event And a second memory configured to store image data in the photographed frame unit at the time at which the event occurs and the time at which the event occurs, wherein the central processing unit is configured to display the event occurrence information stored in the second memory. It is characterized by displaying on.

By storing the time information and the video screen at the time of occurrence of the event according to the motor failure, the administrator can check the accident image together with the motor event information when analyzing the cause of the accident.

Digital Motor Controller, Local Control Panel, Camera, Overlay

Description

Digital motor control system including video surveillance function {Digital Motor Controller system including use of the Video Monitering System}

1 is a system block diagram of the present invention

Figure 2 is a block diagram of the main part of the video surveillance of the present invention

3 is an exemplary video overlay of the present invention.

4 is a block diagram of a conventional system

The present invention relates to a digital motor control system including an image surveillance function, and more particularly, a CCD camera with an infrared lamp and pan / tilt control installed in a field to control motor operation conditions such as drainage, sewage, water supply, and fire hydrant. Alternatively, the video footage from the CMOS camera can be displayed on the TFT-LCD screen of the switchboard room's digital motor controller via a power line modem or coaxial line to create an overlay window in full size or in any size form. When the event occurs due to motor abnormality such as over current, phase loss, unbalance, short circuit, restraint, reverse phase, ground fault, under current, etc. When analyzing the cause, the administrator can check the accident image along with the motor event information for quick accident analysis. In the operation and measurement of the load motor starting method through the digital motor control system, a user-oriented user interface is realized by making all icons necessary for motor control with a touch panel and TFT-LCD. All the monitoring and operation can be performed remotely by the network communication function, and even the administrator alone can easily check the defect and rotation direction of the motor itself in real time through the digital motor control system when no load is checked immediately after construction work or before normal operation. The present invention relates to a digital motor control system including a video surveillance function that does not require a local control panel and an additional video system, and reduces the number of system administrators.

In general, the control of the motor is divided into a mechanical method consisting of a timer, an ammeter, a magnetic switch, and the like, and an electronic method using a digital motor controller as shown in FIG. 4. In the past, the motor controller was biased to simple control such as overcurrent monitoring and motor start stop, so when a problem occurred in the motor control, the manager directly dispatched to the site to initialize the motor controller in the local control panel or to change the status of stop / start, etc. There is a problem such that it takes a lot of maintenance time because it has a structure to inspect with a manager and a wired or wireless call. In some cases, additional video systems, such as CCTV or DVR, had to be installed separately from the motor controllers in order to effectively monitor the site in important areas where accidents caused by motor malfunction caused a lot of human and property damage. However, this video system is generally only a formal surveillance, and is managed in a form independent of the motor controller, and thus has little problem in analyzing the cause of an accident when an accident occurs.

The present invention has been made to solve the above problems, the operation of the operation of the motor, such as drainage, sewage, water supply, fire hydrant, etc., the power line to the video from the infrared camera and the CCD camera or CMOS camera with built-in Pan / Tilt control Through the modem or coaxial line, the TFT-LCD screen of the digital motor controller in the switchboard room creates an overlay window in full size or arbitrary size to show the situation in real time, and overcurrent, phase loss, unbalance, short circuit, restraint, reverse phase It is a function that saves a certain amount of time information and video screen at the time of frame when an event occurs due to motor alarm such as a ground fault, undercurrent, etc. Operation of the load motor via the digital motor controller In the measurement, the touch panel and TFT-LCD make all the icons necessary for motor control and realize a user-oriented user interface, and all the monitoring and operation can be performed remotely by the network communication function. Or, when checking the load before normal operation, it is easy to check the defect and rotation direction of the motor itself through the controller in real time, so that no local control panel and additional imaging system are needed in the field, and thus the initial introduction cost of the system can be reduced. The rapid accident analysis through the system increases the reliability of the digital motor controller and reduces the number of people in the system, thereby reducing maintenance costs.

In order to achieve the above object, a digital motor control system including an image monitoring function receives an analog signal through a power line modem or coaxial line from a camera installed in the field for an image monitoring function together with operation and measurement of a load motor starting method. Converts to a digital signal through a video decoder, and scales the picture in picture (PIP) window image to the size of the overlay window you want to display on the TFT-LCD, and the user-selected iconized main window image through the touch panel. It is stored in the display memory in real time and the image is displayed on the TFT-LCD by the central processing unit through the Transparent / Average / And / Or / Invert overlay function of the digital multiplexer.
In addition, the time information is read from the real time clock when an event occurs due to a motor error, and the video screen at that time is stored as a certain amount of image files such as JPEG in a frame unit, and the motor event information is used when analyzing the cause of the accident. It can provide convenience to the operator during maintenance by providing a video surveillance function that expresses the image with TFT-LCD quickly through the playback function to check the accident image.

Hereinafter, the configuration and operation of the present invention will be described in detail with reference to the accompanying drawings.

1 is a system block diagram of the present invention.

delete

delete

delete

The operation and measurement of the start-up method of the load motor through the digital motor controller 100 is implemented as a user-oriented user interface 501 by iconizing all the items necessary for motor control with the touch panel 121 and the TFT-LCD 120. do.
The network communication function consisting of the network interface 126 and the network 127 is configured to perform all monitoring and manipulation of the digital motor controller 100 even at the remote computer 128.
In addition, the analog video signal photographed by the camera 307 installed in the load motor unit 300 is input to the video decoder 112 through the power line modem 111 or coaxial line and converted into a digital signal.
The converted digital video signal is stored in real time in the display memory 115 in the form of a PIP window image 502 scaled to an overlay window size to be displayed on the TFT-LCD 120, and the user via the touch panel 121. The selected iconized main window image 501 is stored in the display memory 115 in real time.
The central processing unit 101 displays the two window images 501 and 502 on the TFT-LCD 120 through the transparent / average / And / Or / Invert overlay function of the digital multiplexer 118.
When the event occurs due to a motor error, the time information is read from the real time clock 129, and the video screen at that time is stored as a certain amount of image files, such as JPEG, in units of frames. It is configured to quickly show the TFT-LCD 120 through the playback function to check the image.

delete

Starting the main motor 303 or the preliminary motor 304 through the digital motor controller 100 can be directly started and started according to the motor capacity through an iconized menu displayed on the touch panel 121 and the TFT-LCD 120. Y- △ start, reversible start, and reactor start are set by selecting the range of the input current of the motor 303 or 304, that is, the range of the current input from the CT (Current Transformer) 202, and the motor 303 or Start 304).
The central processing unit 100 drives the magnetic switch 203 or 205 of the power supply unit 200 through the motor multiple drive unit 103 by a predetermined timing sequence, and the contact point 204 or of the magnetic switch 203 or 205. 206 is turned on to start the motor 303 or 304.

In this case, when the normal motor operation is difficult due to the abnormality of the central processing unit 101, the motor multiplexing unit 103 may perform the operation of the relay or the contactless relay, which is the actual driving element of the motor control, without the logic of the central processing unit 101. Emergency operation is possible by the starting method of the motor currently set by the operation button of the hybrid IC emergency operation unit 102 composed of the circuit.
One digital motor controller 100 is provided with a connector for extending the motor driving unit to operate the main motor 303 and the spare motor 304 to enable multiple driving.

Signals input through the CT (current) input unit 106 and the PT (voltage) input unit 105 for current monitoring and voltage monitoring according to the starting of the main motor 303 or the preliminary motor 304 are connected to the A / D converter ( Each sample is sampled at the converter 104 and the value is calculated via a programmatic integrator at the central processing unit 101.
The value of the central processing unit 101 is analyzed to determine whether the value is abnormal for overcurrent, phase loss, unbalance, short circuit, restraint, reverse phase, ground fault, undercurrent, and the like. When it occurs, the event records the protection of the load motor and the content of the event.

The remote computer 128 can monitor the operation of the motor, the video surveillance, and the state of the motor by the digital motor controller 100 through the network 127 configured of the TCP / IP port or the RS-232C port.

2 is a block diagram of the main part of the video surveillance of the present invention.
The touch panel 121 uses an infrared method or a 4-wire resistive film method, and data input to the touch panel 121 by a manager's touch is an analog multiplexer (Analog MUX) 122 and an A / D converter 123. Is converted into a digital value, and the converted digital value is substituted with the data inputted by the touch controller 124 and the resolution of a predetermined TFT-LCD, and the X (horizontal) axis and Y (vertical) Get the coordinates of the axis.

The analog video signal output from the camera 307 installed in the load motor unit 300 is input to the video decoder 112 through the power line modem 111 or the coaxial line, and the video decoder 112 is a digital signal BT656. The signal is converted into a (YUV4: 2: 2) signal and sent to a resizer 113.
The resizer 113 converts the input video signal into a PIP window image 502 scaled to the overlay window size to be displayed on the TFT-LCD 120 and sends it to the YUV / RGB converter 114.
The YUV / RGB converter 114 converts the PIP window image 502 input from the resizer 113 into a 16-bit RGB signal and stores the PIP window image 502 in the PIP window memory area of the display memory 115 as the first memory in real time. .
The iconized main window image 501 selected by the user through the touch panel is also stored in the main window memory area of the display memory 115.

The main window image 501 and the PIP window image 502 having different color depths are respectively referred to as lookup table 1 (LUT) 116 and lookup table by the command of the central processing unit 101. 2 117 is converted into a 24 BIT RGB signal, and the converted two signals use one of the overlay functions (Transparent / Average / And / Or / Invert) already defined through the digital multiplexer 118, and for overlay Outputs an image 503 in which the PIP window image 502 is overlaid on an area where the overlay key color value and the main window image 501 coincide with each other by referring to the start and end position data of the horizontal and vertical data. The output timing control unit 119 sends the final 24 BIT RGB signal to the TFT-LCD 120 for display.

The central processing unit 101 reads time information from the real time clock 129 when an event occurs due to a motor abnormality, and compresses a video screen at that time through a video codec 110 such as a JPEG codec. A certain amount of frames is stored in a flash memory 125 which is a second memory as an image file such as JPEG.
When analyzing the cause of the accident, image data such as JPEG stored in the flash memory 125 may be transferred to the TFT-LCD 120 through the video codec 110 such as the JPEG codec so that the accident image together with the event information of the motor may be checked. Implement a playback function that displays the.

delete

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by those skilled in the art without departing from the gist of the present invention as claimed in the claims. Of course, such changes are within the scope of the claims of the present invention.

By using the present invention as described above, the administrator alone can easily check the defects and the rotation direction of the motor itself in real time, so that a local control panel and an additional video system are not required, thereby reducing the initial introduction cost of the system, and a video with the built-in video system. In addition to screen support, it is a function that saves a certain amount of time information and video screens at the time of event according to motor alarm such as over current, phase loss, unbalance, short circuit, restraint, reverse phase, ground fault, under current, etc. It can check the accident image together with the motor event information, so that it can be analyzed quickly, thereby increasing the reliability of the digital motor control system and reducing the number of management personnel, thereby reducing maintenance costs.

Claims (12)

A central processing unit that controls the operation and monitoring of the motor, A magnetic switch or a solid state switch for supplying or disconnecting power from the motor to the motor, PT input unit for receiving the voltage of the power supply, CT input unit for receiving the magnitude of the current supplied to the motor from the power source, An A / D converter for converting an analog signal input to the PT input unit and the CT input unit into a digital signal; A motor driving unit controlling the magnetic switch or the solid state switch; A display unit for displaying a control state or a monitoring state of the motor by the central processing unit; The central processing unit controls the motor driving unit according to a command for driving the motor by a user's selection, and receives and processes a signal corresponding to a voltage and current value converted into a digital signal by the A / D converter. In the digital motor control system, A camera for photographing the state of the motor, A first memory for storing image data photographed by the camera on a frame basis; If the data of the operation state by measuring the voltage and current of the motor is out of the preset range in the CPU, it is determined that there is an event in the motor, If there is the event further includes a second memory for storing the image data in the unit of the photographed frame at the time the event occurs and the time the event occurs, And the central processing unit displays the event occurrence information stored in the second memory on the display unit. The method of claim 1, And storing in the first memory an iconized main window image selected by the user for control or monitoring of the motor. The method of claim 2, The icon of the iconized main window image is the status information and data of the direct start, Y- △ start, reversible start, reactor start of the motor. The method of claim 2, And a PIP window image scaled to a predetermined size is overlaid on a predetermined area of the main window image and displayed on the display unit. The method of claim 4, wherein The overlay is a digital motor control system, characterized in that the PIP window image is overlaid with reference to the horizontal and vertical start position and end position data to be overlaid on the main window image. The method according to any one of claims 3 to 5, And the main window image and the PIP window image adjust depths of colors by respective lookup tables. The method of claim 6, The event is one or more of overcurrent, phase loss, unbalance, short circuit, restraint, reverse phase, ground fault, undercurrent for the motor. The method of claim 7, wherein And said motor comprises a plurality of motors and is controlled and monitored by a single digital motor controller. A central processing unit that controls the operation and monitoring of the motor, A magnetic switch or a solid state switch for supplying or disconnecting power from the motor to the motor, PT input unit for receiving the voltage of the power supply, CT input unit for receiving the magnitude of the current supplied to the motor from the power source, An A / D converter for converting an analog signal input to the PT input unit and the CT input unit into a digital signal; A motor driving unit controlling the magnetic switch or the solid state switch; A display unit for displaying a control state or a monitoring state of the motor by the central processing unit; The central processing unit controls the motor driving unit according to a command for driving the motor by a user's selection, and receives and processes a signal corresponding to a voltage and current value converted into a digital signal by the A / D converter. In the digital motor control system, Further comprising an emergency operation unit in addition to the central processing unit for controlling the motor drive unit, And digitally controlling the motor by controlling the magnetic switch as the user controls the emergency operation unit when there is an error in the central processing unit. The method of claim 9, The emergency operation unit is a digital motor control system, characterized in that composed of a logic circuit of the hybrid IC. The method of claim 10, And the motor driving unit controls the magnetic switch or the solid state switch by determining whether the emergency operation unit is controlled or the central processing unit. The method of claim 10, The motor is a digital motor control system, characterized in that made of a plurality and controlled by one motor drive.

Images