KR20100128474A - Controller and emergency generation system including the same - Google Patents

Abstract

PURPOSE: A controller and an emergency generation system including the same are provided to monitor a digitally converted signal by storing the digitally converted signal. CONSTITUTION: An ADC(104) receives an analog signal from at least one sensor installed in an engine of an emergency generation device. The ADC converts the received analog signal into a digital signal. A CPU(101) processes the signal received from the ADC. A memory unit(102) stores information processed by the CPU and includes a plurality of RAMs or ROMs. The CPU is programmed through JTAG. The CPU calculates the number of the rotations of the engine.

Description

CONTROLLER AND EMERGENCY GENERATION SYSTEM INCLUDING THE SAME}

The present invention relates to a control unit for controlling an emergency power generation device and an emergency power generation system including the same.

Generators are used not only in mobile devices such as vehicles, aviation, and ships, but also in engine industries such as thermal power plants and hydroelectric power plants. In particular, ships are equipped with emergency generators in preparation for generator failures that may occur during navigation. In this case, a monitoring system is required to operate the emergency generator in case of a failure of the main generator.

In the case of a conventional emergency generator monitoring system using an analog signal, only the alarm bell is generated to check the real-time information on the abnormal state of the engine inside the emergency generator and to take action.

However, since information on the engine abnormality of the emergency generator is not stored, the cause of the failure cannot be easily determined due to the lack of information on the engine of the emergency generator.

An object of the present invention is to propose a control unit for controlling an emergency power generation device for high-speed signal processing to enable the digital control to monitor the engine condition, and an emergency power generation system including the same.

According to an aspect of the present invention, a control unit for controlling an emergency power generation apparatus of a ship, the control unit comprising: an ADC for receiving an analog signal from at least one sensor installed in the internal engine of the emergency power generation apparatus, and converts the received analog signal into a digital signal; A CPU for processing a signal received from the ADC; And a control unit for controlling an emergency power generation device including a memory unit for storing the signal processed information in the CPU is provided.

According to another aspect of the present invention, an emergency power generation system including a control unit for controlling an emergency power generation device of a ship, the emergency power generation device for producing emergency power; A display unit displaying a state of the emergency power generation device; An operation unit for operating the emergency power generation device; And a controller configured to receive an analog signal input from a plurality of sensors provided in the emergency power generation device and convert the analog signal into a digital signal, wherein the controller converts the analog signal into the digital signal. There is provided an emergency power generation system including a CPU for signal processing and a memory unit for storing the information processed by the CPU.

The controller and the emergency power generation system including the same for controlling the emergency power generation device according to the present invention has the advantage of storing and monitoring the digitally converted signal.

In addition, the control unit for controlling the emergency power generation device and the emergency power generation system including the same has the advantage of protecting the engine through an alarm bell to notify the input signal when a value exceeding a set reference value.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all transformations, equivalents, and substitutes included in the spirit and scope of the present invention. In the following description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In order to facilitate a thorough understanding of the present invention, the same reference numerals are used for the same means regardless of the number of the drawings.

Prior to the detailed description of the drawings, it is intended to clarify that the division of the components in the present specification is only divided by the main function of each component. That is, two or more components to be described below may be combined into one component, or one component may be provided divided into two or more for each function. Each of the components to be described below may additionally perform some or all of the functions of other components in addition to the main functions of the components, and some of the main functions of each of the components are different. Of course, it may be carried out exclusively by.

1 is a system diagram showing an emergency generator monitoring system according to an embodiment of the present invention, Figure 2 is a block diagram showing an emergency power generation device, Figure 3 is a block specifically showing the operation unit shown in FIG. It is also.

1 to 3, the emergency generator control system according to the present invention includes a display unit 180, a control unit 100, an operation unit 160, an interface module 110, an analog expansion unit 130, and a relay module ( 140, an expansion relay 150, and an emergency power generation device 120.

In detail, the emergency power generation device 120 may include an engine 121, a power generation unit 122, a power control unit 123, and a sensor unit.

The engine 121 uses an engine that uses fossil fuel, such as a diesel engine. The engine compresses the air inside the cylinder to generate the rotational force generated by burning heavy oil or light oil.

The power generation unit 122 generates electric power using the rotational force from the engine 121.

The power control unit 123 controls the power produced by the power generation unit 122 and converts the power to be used in the ship.

The sensor unit may include a plurality of sensors such as a pickup sensor, a temperature sensor, and a pressure sensor. Pick-up sensor is a sensor that uses the principle that induced electromotive force is generated by the electromagnetic induction phenomenon when the magnetic flux passes through the pickup coil. The pickup sensor is provided inside the engine 121 to measure the RPM of the engine 121. The pickup sensor generates a square wave by connecting a constant magnet to the crankshaft and measuring a change in magnetic flux generated each time the engine rotates. The pickup sensor counts the number of square waves and provides them to the controller 100.

The temperature sensor may include a first analog sensor for sensing a lubricating oil temperature and a second analog sensor for sensing a coolant temperature. The pressure sensor may include a third analog sensor for detecting lubricating oil pressure and a fourth analog sensor for detecting coolant pressure.

The first analog sensor may detect a temperature in the range of -50 to 200 ° C. The first analog sensor may use MBT 5250 manufactured by DANFUSS. At this time, the first analog sensor is input in the form of 0.6 ~ 3V. The value converted to 12bit resolution can be calculated based on the minimum 0.6 and 3V, and the sensed value can be filtered and provided to the controller.

The second analog sensor can detect a temperature in the range of 0 ~ 120 ℃. As the second analog sensor, W227 may be used, such as TR227. The temperature sensor has an analog output of 4-20mA and a full voltage of 24V.

The third analog sensor may sense pressure in the range of 1 to 10 bar, and the fourth analog sensor may sense pressure in the range of 1 to 10 bar.

The values detected by the first to fourth analog sensors are transmitted to the controller 100.

The sensor unit may further include a power supply voltage sensor for sensing a system power supply voltage. The supply voltage sensor can detect voltages in the 0 to 30V range. The voltage value measured by the power supply voltage sensor is transmitted to the controller 100.

The third and fourth analog sensors may use PA-221SR manufactured by KELLER.

The interface module 110 is connected to the power supply unit, the control unit 100, the operation unit 160, and the emergency power generator 120. The interface module 110 may be configured of a plurality of switch elements, and may provide a signal input from each component to the controller 100, and may provide a signal input from the controller 100 to each component.

The interface module 110 may include a 24V power supply, twelve digital inputs and five analog inputs, six relay inputs and outputs, and two pickup terminals.

The interface module 110 may be connected to a main power battery and an auxiliary power battery to supply power.

As shown in FIG. 3, the operation unit 160 includes a power supply 161, a start 162, a stop 163, a bell stop 164, an alarm reset 165, an emergency stop 165, and an automatic / manual mode. 166 may be provided.

The power button 161 is a button for supplying power to the emergency power generating device. When the power button 161 is pressed, the emergency power generating device is driven.

When the start button 162 is not automatically set as a button for starting the engine of the emergency power generator, the start button 162 is manually pressed to start the engine.

The stop button 163 may stop the engine 121. The stop button 163 may be pressed by the user when the emergency power generation device is unnecessary to operate.

The bell stop button 164 is a button for stopping the alarm bell ringing by the user pressing a button after the operator or the user takes appropriate measures after the alarm bell rings or after the alarm bell is recognized.

The alarm reset button 165 is a button for resetting all alarms. For example, the alarm reset button 165 transmits a signal for alarm reset to the relay module 140 to turn off the relay circuits related to the alarm occurrence in the relay module 140.

The emergency stop button 166 may be operated by a user as a button for supplying a control signal to emergency stop the engine when an engine abnormality occurs.

Auto / manual mode button 167 is a button to switch to the automatic mode or manual mode.

The analog extension 130 may be connected to sensors that are not connected to the interface module 110 in the sensors installed in or around the engine. The analog expansion unit 130 may be connected to the control unit 100 to transmit an analog sensor signal to the control unit 100.

The relay module 140 may include seven relays for driving an emergency generator engine.

Hereinafter, the functions of each relay of the relay module will be described with reference to Table 1.

Relay number function Remarks First relay circuit Engine start and crank start Off when RPM is applied Second relay circuit Fuel valve opening and closing Engine stops when valve closes Third relay circuit Start failed Engine fails to start Fourth relay circuit Remote on Remote operation Fifth relay circuit Alarm bell Alarm ringing Sixth relay circuit Engine overspeed detection Engine speeding 7th relay circuit Each alarm display Alarm display

Table 1 summarizes the functions and control of each relay circuit of the relay module.

The first relay circuit drives the start motor of the engine. When the engine is started, the starter motor must be turned off immediately to protect the engine because the engine has more speed and power than the motor. That is, when the RPM signal indicating that the engine is started is input, the first relay circuit should be turned off immediately. To start the engine, the engine fuel valve must be opened as well as the start motor. Thus, the second relay circuit drives the fuel valve of the engine. When the engine is started, the first relay circuit is turned off and the second relay circuit remains on.

Here, engine starting can be attempted several times. In the present invention, three attempts will be described as an example. When a signal for starting the engine is input, the first relay circuit is turned on for 5 seconds, and if the engine RPM signal is not applied, it is turned off for 5 seconds and then turned on again for 5 seconds. This operation is performed three times. Accordingly, the maximum time for starting the engine is 25 seconds.

At this time, the third relay circuit is turned on when the engine drive fails as a result of three consecutive engine starts, thereby notifying the outside of the engine start failure. Here, the external may mean the display unit 180 or an alarm device for notifying the alarm. When the engine fails to start, the fifth relay circuit may be operated to ring the alarm bell.

The fourth relay circuit shows that the remote mode is set, and the sixth relay circuit notifies that the engine is rotating at an engine over speed, that is, 1980 RPM or more. The sixth relay circuit transmits a signal to the fifth relay circuit to automatically stop the engine when the engine is in an overspeed state and to operate an alarm bell notifying the outside (display unit or alarm device) of the overspeed. The seventh relay circuit informs the alarm state of the engine. When the controller is powered on and there is no alarm, the seventh relay circuit is turned on and is turned on by using the trigger signal whenever various alarms are received, indicating that an alarm condition of the engine has occurred to the outside.

The expansion relay 150 includes relay circuits which are preliminarily attached for engine control in addition to each function. For example, the expansion relay 150 may include a relay circuit which is operated when the lubricating oil temperature, the pressure of the engine, and the temperature or the pressure of the coolant is higher than the reference value to stop the engine or adjust the engine speed. .

The display unit 180 displays a state of the emergency power generation device. The display unit 180 may include a display device such as a liquid crystal display, a touch screen, or an organic light emitting display. The display unit 180 may display a state of an engine, that is, an engine RPM, an analog sensor signal, or a state of various alarms. The display unit 180 displays four analog sensor values and displays the values in a chart, and the power supply values are the same. The display unit 180 lists important alarms on the left side and informs the user when an alarm occurs. In addition, the display unit 180 may display a manual, a remote mode display, and a state of preparation, operation, start, and failure, which are driving states of the engine.

The controller 100 controls the engine propulsion force inside the generator, and controls the general setting. The controller 100 monitors the thrust force or general setting of the generator.

To this end, the controller 100 receives a signal from the engine inside the generator through the interface module 110. The controller 100 generates a control signal through the received signal and transmits the generated control signal to the relay module 140. In addition, the controller 100 transmits state information of the engine to the display unit 180.

The control unit 100 may be connected to the analog expansion unit 130, the relay module 140, and the expansion relay 150. The controller 100 is connected to the analog expansion unit 130 and converts the analog signal received from the sensors formed around the engine 121 into a digital signal. The converted signal is stored in the memory unit inside the controller 100. In addition, the controller 100 processes the converted digital signal and provides it to the display unit 180.

The controller 100 may control the relay module 140. That is, the controller 100 may control the engine start and stop by driving the relay module 140 without directly controlling engine start and stop. The controller 100 may generate and supply a control signal capable of driving the relay module 140.

The controller 100 may control the peripheral relays of the emergency power generator 120 by controlling the expansion relay 150.

The control unit 100 may be implemented as a control board adopting a high speed multifunction digital signal processing processor in order to have flexibility and user access in engine control.

The digital signal processing processor of the controller 100 includes a digital input terminal, an analog sensor signal input terminal and a 4-20 mA current output terminal, a pickup sensor input terminal, a relay control terminal, a sensor signal input terminal, a monitoring signal output terminal, and an RS-232C. It may include an input / output terminal such as a communication port. The digital signal processing processor of the controller 100 processes a signal input to each terminal and provides a result signal to the interface module 110, the display unit 180, the relay module 140, and the like.

The controller 100 may calculate the engine speed. That is, when the engine speed information is received from the pickup sensor included in the emergency power generation device 120, it may be calculated and provided to the display unit 180.

The controller 100 may receive the current engine speed and calculate the received engine speed, display the calculated speed on the display unit 180, or store it if necessary. The input spherical pulse is calculated using the capture interrupt. The RPM calculation is as in Equation 1. Since the number of pulses per revolution is different for each pickup coil of an engine, it is easy to apply it to other engines simply by adjusting this pulse value parameter.

Each time the capture interrupt occurs, the timer value received is calculated and stored in the buffer. Due to the nature of the capture interrupt, it is desirable to be configured not to receive a frequency input below a specific frequency, about 100 Hz, because it waits for the next input.

A detailed description of the control unit 100 will be described in detail with reference to FIGS. 4 to 6.

4 is a block diagram showing a functional block of a control unit according to an embodiment of the present invention, FIG. 5 is a block diagram showing an ADC block shown in FIG. 4, and FIG. 6 is a logic circuit of the control unit shown in FIG. 1. Is a block diagram briefly shown.

4 to 6, the controller 100 according to the present invention includes a CPU 101, a system controller 105, an ADC 104, an external interrupt controller 106, a CPU-Timer 107, and an external interface. 103 and the memory unit 102 may be included.

In detail, the CPU 101 is connected to the memory unit 102, the external interface 103, the external interrupt control unit 106, the ADC 104, and the system control unit 105.

The CPU 101 may set an internal program by receiving a program through a real-time JTAG.

The CPU 101 may signal-process the signal input from the ADC 104 and store it in the memory unit 102. In addition, the CPU 101 may provide a digital signal signal-processed to the display unit 180 through the external interface 103.

The CPU 101 generates a control signal for controlling the engine and transmits the control signal to the relay module 140 through the external interface 103. In this case, the CPU 101 may generate control signals using the signals input from the system controller 105.

The CPU 101 periodically checks whether an external interrupt is input through the CPU-Timer 107 and operates accordingly.

The CPU 101 can calculate the engine speed. Description of this is the same as the description of the control unit 100 with reference to FIG.

The ADC 104 may convert an analog signal input from sensors installed in the engine into a digital signal. The ADC 104 receives 0 to 3V analog input voltage and outputs it after digital conversion. ADC 104 according to an embodiment of the present invention is composed of a module having two eight channels, it can be configured in 16 channels in series. The ADC 104 can perform simultaneous or sequential sampling and can provide fast conversion rates of 25 MHz or 12.5 MSPS.

As illustrated in FIG. 5, the ADC 104 includes an analog multiplexer 340 and 350, a sample and hold (S / H) 360 and 370, an ADC module 310, and a high speed prescaler ( High Speed Prescaler) 330, Result Register 320, ADC Control Register 300, and the like.

The analog multiplexers 340 and 350 output a signal input to eight channels in one channel so as to select one of eight channels.

The auto sequencing capacity of the two S / Hs 360 and 370 can provide up to 16 automatic conversions in a single session, with each conversion being programmable from 1 to 16 selected inputs. The ADC module 310 stores the conversion value in the result register 320.

The ADC module 310 may provide various triggers for Start of Conversion (SOC). Sequencers 1 and 2 in the ADC control register 300 provide various triggers for the SOC. Here, the sequencers 1 and 2 may operate in the engine start or engine stop mode. Synchronized transformations can provide a variety of time sequence triggers.

Each of the S / H A and B 360 and 370 may be separated through the control of the high speed prescaler 330.

The memory unit 102 may store a signal input from the sensor unit.

The memory unit 102 may store information about the engine, such as engine speed information, alarm information, lubricating oil temperature and pressure information, coolant temperature and pressure information, battery information, and engine stop information.

Engine information stored in the memory unit 102 may be managed as a database. For example, the controller 100 may be connected to an external PC 170 through an RS232 communication method through an external interface 103 to transmit information about an engine to a computer.

alarm function Remarks Engine start failure alarm Engine start Alarm ringing Low voltage alarm 20V or less power supply Alarm ringing Engine overspeed alarm Engine speeding Alarm bell rings after emergency stop Sensor alarm Input over setting Lubricant or Coolant Information Sensor disconnection alarm When sensor signal is disconnected Switch input alarm Switch input Alarm ring at specific input Switch disconnection alarm Switch disconnection Alarm ring at specific input

The transmitted information may be displayed in a table as shown in Table 2. The memory 102 may be a memory such as a flash memory. The memory unit 102 may include a plurality of RAMs or ROMs.

As illustrated in FIG. 6, the controller 100 may include a plurality of macrocells and may be manufactured as one chip in a logic form. In FIG. 6, there are several LABs composed of macro cells, and an input / output (I / O) control block according to each LAB controls input / output of an external input / output (I / O) pin. Accordingly, the user can easily write or erase a program in the macro cell by implementing a logic type circuit.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be understood that the invention may be varied and varied without departing from the scope of the invention.

1 is a system diagram showing an emergency generator monitoring system according to an embodiment of the present invention.

2 is a block diagram showing an emergency power generation apparatus.

3 is a block diagram illustrating in detail the operation unit illustrated in FIG. 1;

FIG. 4 is a block diagram illustrating a configuration for each function of a controller shown in FIG. 1. FIG.

FIG. 5 is a block diagram specifically showing the ADC module shown in FIG. 4. FIG.

FIG. 6 is a block diagram schematically illustrating a logic circuit of the controller illustrated in FIG. 1. FIG.

<Description of the symbols for the main parts of the drawings>

100: control unit

110: interface module

120: emergency power unit

130: analog extension

140: relay module

150: extension relay

160: operation unit

170: PC

180: display unit

Claims (19)

In the control unit for controlling the emergency power generation device of the ship, An analog-to-digital converter (ADC) for receiving an analog signal from at least one sensor installed in an emergency power generation apparatus and converting the received analog signal into a digital signal; A CPU for processing a signal received from the ADC; And A control unit for controlling an emergency power generation apparatus including a memory unit for storing the signal processed information in the CPU. The method of claim 1, The memory unit is a control unit for controlling an emergency power generation device, characterized in that it comprises a plurality of RAM or ROM. The method of claim 1, The CPU is a control unit for controlling an emergency power generation device, characterized in that programmed via JTAG. The method of claim 1, The CPU is a control unit for controlling the emergency power generation apparatus, characterized in that for calculating the number of revolutions of the engine. According to claim 1, And the memory unit stores at least one of rotational speed information of the engine, alarm information, temperature and pressure information of lubricant or cooling water, battery information, and engine stop information. In the emergency power generation system comprising a control unit for controlling the emergency power generation device of the ship, An emergency power generation device for producing emergency power; A display unit displaying a state of the emergency power generation device; An operation unit for operating the emergency power generation device; And It includes a control unit for receiving an analog signal input from a plurality of sensors provided in the emergency power generation device and converts it into a digital signal, The control unit includes an ADC for converting the analog signal into the digital signal, a CPU for signal processing the signal received from the ADC and a memory unit for storing the signal processed information from the CPU. The method of claim 6, The memory unit emergency power generation system for controlling an emergency power generation device, characterized in that it comprises a plurality of RAM or ROM. The method of claim 6, The CPU is an emergency power generation system for controlling an emergency power generation device, characterized in that programmed via JTAG. The method of claim 6, The CPU is an emergency power generation system, characterized in that for calculating the rotation speed of the engine. The method of claim 6, And the memory unit stores at least one of rotational speed information of the engine, alarm information, temperature and pressure information of lubricating oil or cooling water, battery information, and engine stop information. The method of claim 6, The emergency power generation device An engine for generating torque; A power generation unit converting the rotational force generated from the engine into electric power; And Emergency power generation system including a power control unit for converting the power generated by the power generation unit to the power used in the ship. The method of claim 11, It includes a sensor unit for generating a signal by measuring the temperature and pressure of each of the lubricant supplied to the engine and the coolant around the engine, The sensor unit is an emergency power generation system, characterized in that for transmitting the measured signal to the control unit. 13. The method of claim 12, And an interface module configured to provide a signal received from the sensor unit to the controller between the sensor unit and the controller. The method of claim 11, Emergency power generation system comprising a relay module including at least one relay circuit for driving the engine by receiving a control signal from the controller to the engine. The method of claim 14, A first relay circuit for driving a start motor driven to start the engine; A second relay circuit for controlling opening and closing of a fuel valve input to the engine; A third relay circuit for limiting the number of starts of the engine; And a fourth relay circuit for operating the engine in either a manual mode or a remote mode. The method of claim 15, And a fifth relay circuit configured to receive a signal from the third relay circuit and operate an alarm bell when the engine fails to start. The method of claim 15, And a sixth relay circuit for indicating that the engine is in an overspeed state when the rotation speed of the engine exceeds a reference value. The method of claim 15, Emergency power generation system including a seventh relay circuit for checking the alarm state of the engine. The method of claim 6, The control unit is an emergency power generation system, characterized in that manufactured by a single chip programmable.

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