JP2000088932A - Portable monitor of generator and generator control board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate scaling to conform to an object to be monitored of many types by facilitating portability by one gathered device. SOLUTION: The portable monitor of a generator and a generator control board comprises an input unit 4 for inputting an analog signal and a digital signal, an A-D converter 5 for converting the analog signal into a digital signal, an information display unit 7, an operating unit for switching a display content of the display unit and setting display conditions, and an information processing controller 6 for information processing the input digital signal and the output signal of the converter, displaying the result on the display unit and information processing to alter a display scale of the display of the display unit at the time of inputting the signal for scaling from the operating unit. The respective units can be contained in one housing, the display unit is constituted of a touch panel, and used also as the operating unit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a generator and a portable monitoring device of a generator control panel for checking the state of each part of an emergency power generator for supplying power to important equipment during a power failure.

[0002]

2. Description of the Related Art Generally, in places where public facilities such as hospitals, fire departments, police, weather stations, and other private facilities continue to operate 24 hours a day, emergency power is supplied to necessary facilities in the event of a commercial power outage. Private power generation facilities are indispensable. In the event of a power outage, this emergency private power generation facility automatically activates the power generator using the battery that had been kept charged by the commercial power supply, and the generated power is automatically replaced by the commercial power supply. Power is supplied to the required equipment.

[0003] It is often necessary to check whether or not such a power generator is in a normal operating state at the time of a power failure or test operation, regularly or irregularly. The check items are the engine (diesel engine, etc.)
Lubricating oil pressure, rotation speed, cooling water temperature, generator output voltage, current, frequency, power factor, power, etc.
There are only a few large-scale emergency power generation systems that have dedicated facilities with sufficient checks at the location where the power generator is installed.

In order to check the operating state of the generator at a place where the above-mentioned dedicated equipment is not provided, each time, a voltage, a current, and the like taken out from a required point of the generator are measured with a measuring instrument such as a tester. The measured analog amount is digitized by a computer such as a personal computer, processed by a digital signal, and displayed. The display on the PC screen corresponds to each output of the target generator,
The display scale must be changed (hereinafter referred to as scaling), but this has conventionally been done by changing the computer program.

[0005]

In the operation check of the above-described power generator having no dedicated equipment, a required measuring device and a personal computer which are not united are carried each time, and the program is changed every time scaling is performed. There was a disadvantage that it had to be done. An object of the present invention is to solve such a drawback, to be easy to carry with one integrated device, to have high operability, and to be able to perform simple scaling operation so as to be suitable for many types of monitoring targets. It is another object of the present invention to provide a portable monitoring device for a generator and a generator control panel.

[0006]

In order to achieve the above object, a portable monitoring device for a generator and a generator control panel according to the present invention comprises:
An input unit connected to a control panel of a generator to be monitored and inputting an analog signal and a digital signal necessary for obtaining monitoring information; an A / D converter for converting the analog signal into a digital signal; An information display unit that displays a screen including a part necessary for the operation and a part indicating a monitoring result, an operation unit for switching display contents of the information display unit and setting display conditions, and the input digital Information processing of the signal and the output signal of the A / D conversion unit, and displaying the result on the information display unit. When a signal for scaling is input from the operation unit, the display unit performs the information processing. And an information processing control unit that performs processing to change the display scale in the input unit, the A / D conversion unit, the information display unit, the operation unit, and the information processing control unit. Configuring so that can be stored in one housing.

More specifically, in the portable monitoring device for a generator and a generator control panel according to the present invention, a touch panel constituting a display surface of the information display unit also serves as an operation unit, and the display of the information display unit is performed. Switching of contents and setting of a display scale as a display condition are performed based on an operator's touch on the touch panel.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a portable monitoring device for a generator and a generator control panel of the present invention (hereinafter referred to as the present device).
FIG. 2 is a system diagram showing an outline of the function of FIG. This device is a device for testing analog output data and status / fault signals output from the generator control panel to the machine facility management and maintenance system. The control is performed by a programmable controller, and the external operation and display are performed by a graphic touch panel.

In FIG. 1, reference numeral 1 denotes an engine generator constituted by a diesel engine (hereinafter referred to as an engine) 11 and an AC generator (hereinafter referred to as a generator) 12. Reference numeral 2 denotes a control panel of the generator 12. 3 is a load of the generator 12.
Reference numeral 10 denotes the present apparatus. As shown in FIG. 1, the present apparatus includes an input unit 4, an A / D conversion unit 5, an information processing control unit 6, and an information display unit (mainly composed of a touch panel, hereinafter referred to as a touch panel) 7. Have been.

The input unit 4 includes a connection cable and terminals. The output unit 8 includes a drive output of a not-shown relay contact inserted between the present device and the generator control panel 2,
This is to output a feedback signal (analog signal) for confirming the scaling function of the device. For this reason, the output unit 8 has a built-in D / A converter. If such a function is not required, the output unit 8 may not be provided. The power supply unit 9 is provided with an AC100 externally.
This is for inputting V or 24 V DC and supplying power to each part in the apparatus.

FIG. 2 is an explanatory diagram showing the relationship between the input section 4 of the apparatus shown in FIG. 1 and monitored points of each section of the power generator 1. As shown in FIG. In FIG. 2, 11a to 11n are detectors at each check point of the engine. 13 is a circuit breaker for wiring. 14 is a current transformer. 15 is a transformer. 16 is a transducer. 17 is a voltmeter. 17a
Is a voltmeter changeover switch. 18 is an ammeter. 1
8a is an ammeter changeover switch.

Reference numeral 2a denotes an analog signal (4 to 20 mA of DC current) obtained by replacing the outputs of the detectors 11a to 11n (numerical values representing the number of revolutions of the engine 11, lubricating oil pressure, cooling water temperature, etc.) with a transducer (not shown). ) Of this device 1
Output terminal for supplying 0. 2b is the generator 1
2 is an output terminal for supplying power to the load 3 via the circuit breaker (MCCB) 13. 2 c is an output terminal for supplying the output of the transducer 16 to the device 10. 2d is an output terminal of an alarm circuit (not shown) built in the control panel 2.

The transducer 16 is composed of a plurality of unit transducers, inputs a plurality of elements such as the voltage and current of the output of the generator 12, substitutes an analog quantity of 4 to 20 mA, and outputs a plurality of corresponding information. I do. Note that the voltage is input to the transducer 16 via the transformer 15 only when the voltage is 400 V or more, but when the voltage is 400 V or less, the output voltage of the generator 12 is , As it is transducer 16
Input. The current is sensed by a current transformer 14 coupled to a circuit supplying the load 3, the output of which is input to a transducer 16.

Outputs from the output terminals 2 a and 2 c of the generator control panel 2 enter the device 10, pass through the input unit 4, and become input to the A / D converter 5. The output of the output terminal 2d of the generator control panel 2 via the input unit 4 and the digitized output of the A / D conversion unit 5 are input to the information processing control unit 6 and are processed by the built-in CPU. The signal is changed to a signal suitable for information display and output to the information display unit 7. When scaling is performed by touching the display surface 7a of the touch panel 7, a scaling value for designating a display scale of a corresponding item is set by operating a ten-key displayed on the screen. The information processing of the information processing control unit 6 is performed according to the following.

FIG. 3 is a plan view showing the appearance of the apparatus 10 of FIG. The housing of the device 10 is composed of a main body 20 and a lid 21 of the housing. FIG. 3 shows a state in which the lid 21 is opened and the upper surface of the touch panel 7 is visible. FIG. 4 is a perspective view showing the appearance of the apparatus of FIG. 1 in a use state. In FIG. 4, the lid 21 is opened and the information display section 7 is opened.
Is set at an easy-to-view angle. In FIG. 3, 4
a, 4b, 4c, 4d, and 4e are terminals of the input unit 4,
These are a first channel measurement connector, a second channel measurement connector, a status / security monitoring connector, an alarm / external monitoring connector, and a power supply connector.

The first channel measurement connector 4a and the second channel measurement connector 4b are connected to the output terminal 2c of the control panel 2. The status / security monitoring connector 4c is
It is connected to the output terminal 2a of the control panel 2. The alarm / external monitoring connector 4d is connected to the output terminal 2d of the control panel 2. The power supply connector 4e is connected to a power supply (not shown) of 100 V AC or 24 V DC supplied to the apparatus.
As shown in FIG. 4, the touch panel 7 has hinges 7b, 7b
, The display surface 7a can be semi-fixed at a position where the display surface 7a is easy to see. 9a is a power switch of the apparatus.

An example of the function of the present apparatus is as follows: measurement display of 4-20 mA DC output from the control panel;
There are scaling operation for mA input, display of status / security / monitoring items, remote test operation signal output, and hard copy of the screen being displayed. The screen displayed on the display surface 7a of the touch panel is switched, for example, by a commercial power supply measurement display, a generator power supply measurement display, a field voltage and other measurement display, a preliminary measurement display, a state / monitoring item display, remote operation, and security. Monitor item display (major fault), alarm monitor item display (minor fault), external monitor item display, commercial power measurement scaling, generator power measurement scaling, field voltage and other measurement scaling, preliminary measurement scaling, etc. .

FIG. 5 is an explanatory diagram showing an example of a screen appearing on the display surface 7a of the touch panel when the commercial power supply measurement display is selected. In FIG. 5, reference numeral 31 denotes a screen switching touch switch for switching to another measurement screen or a status / monitoring screen. Reference numeral 32 denotes a scaling touch switch. When this position is touched, a numeric keypad for scaling is displayed. Reference numeral 33 denotes a scaling release touch switch. When this position is touched, the display of the numeric keypad for scaling is released and disappears from the screen.

Reference numeral 34 denotes a commercial voltage scaling touch switch. Reference numeral 35 denotes a frequency lower limit scaling touch switch. 36 is a frequency upper limit scaling touch switch. If you touch each position of 34-36,
Set and display the scaling values of the commercial voltage, frequency lower limit, and frequency upper limit, respectively. 37 indicates the scaling value of the commercial power factor, and the power factor scaling value is 0.5 to 1
0.5 is fixed. Reference numeral 38 denotes a screen print touch switch for printing a display screen. Reference numeral 39 denotes a screen print stop touch switch for stopping printing.

For example, when the scaling touch switch 32 is touched while the screen shown in FIG. 5 is displayed, as shown in FIG.
Is displayed on the screen. Next, when the user touches a data portion for which a scaling value is to be set, for example, the commercial voltage scaling touch switch 34, the touched portion turns white. In this state, the scaling value is specified by touching the numeral on the scaling numeric keypad 40, and the scaling value is set by touching the execution key 40a. Is done.

When performing the next scaling, touch the data portion for which another scaling value is to be set.
Hereinafter, the same operation may be repeated. To end the scaling, touching the scaling release touch switch 33 closes the scaling numeric keypad 40 and disappears from the screen.

Next, when the user selects "Generator 1 measurement" of the screen switching touch switch 31 and touches the place, the screen of FIG. 5 changes to the generator power measurement display screen of FIG.
The difference between FIG. 5 and FIG. 7 is that “commercial voltage” of the item of the scaling touch switch changes to “generator voltage”, and “commercial” similarly changes to “generator” in the same manner. "1 measurement" has changed to "commercial measurement"
There is no change in other parts. The scaling operation on the generator power measurement display screen of FIG. 7 may be performed in the same manner as in FIGS.

When a display screen other than the above is selected by a switching operation on the display surface 7a of the touch panel, the items displayed on the screen are as follows. The field voltage and other measurement displays include the generator field voltage, the generator field current, the charging device charging current, the engine speed, the cooling water pressure, the lubricating oil pressure, the recooling water pressure, and the like. In the status / monitoring item display, selection display during commercial power reception and commercial power outage, selection display between commercial power side and generation power supply side, selection display of control circuit automatic and control circuit test, control circuit remote test, control circuit remote test In addition to selection and display of priority, control circuit priority extension, and remote standby completion, there are various displays such as operation of the generator, low-speed relay operation, specified-speed relay operation, and uniform charging.

In the security monitoring item display (major failure), in addition to the display of the major failure, a decrease in hydraulic pressure, an increase in water temperature, an overspeed,
Overvoltage, overcurrent, congestion in starting, control power supply failure, spontaneous stop,
Excitation device failure, voltage drop, generator breaker disconnection, water cutoff, overheating of generator shaft, etc. In the alarm monitoring item display (minor failure), in addition to the indication of minor failure, fuel oil level abnormality, insufficient lubrication pressure, thermal insulation abnormality, automatic charging equipment abnormality, auxiliary circuit leakage, auxiliary circuit overcurrent, hydraulic pressure There are shutter abnormalities, hot air heater abnormalities, disconnection of circuit breakers for wiring (collective), cooling water abnormalities, ground fault overvoltage, transformer temperature rise, etc.

The present apparatus can be variously modified in addition to the embodiment shown in FIGS. 1 to 7, and any of them can be used as long as it meets the gist of the present invention. Within the same range.

[0026]

As described above, the generator and the portable monitoring device of the generator control panel according to the present invention have an input section, an A / A
A digital-to-analog (D) conversion unit, an information display unit, an operation unit, and information processing of an input digital signal and an output signal of the A / D conversion unit, and displaying the result on the information display unit; And a data processing control unit that performs processing so that a display scale on the display unit is changed in the information processing when a signal for scaling is input from the mobile terminal. Since the display scale on the display unit can be freely changed, there is an effect that one device can be used for various generators having different outputs.

Further, a touch panel constituting a display surface of the information display unit also serves as an operation unit, and switching of display contents of the information display unit and setting of a display scale as a display condition are performed by an operator using the touch panel. The above-mentioned effect can be efficiently achieved by performing based on the touch.

[Brief description of the drawings]

FIG. 1 is a system diagram showing functions of an apparatus of the present invention.

FIG. 2 is an explanatory diagram showing a connection state when using the device of FIG. 1;

FIG. 3 is a plan view showing an appearance of the apparatus of FIG. 1 with a lid opened.

FIG. 4 is a perspective view showing an appearance of the apparatus of FIG. 1 in a use state.

FIG. 5 is an explanatory diagram showing an example of a screen appearing on a touch panel when a commercial power supply measurement display is selected.

FIG. 6 is an explanatory diagram illustrating an example of a screen that appears on a touch panel during a scaling operation.

FIG. 7 is an explanatory diagram showing an example of a screen appearing on a touch panel when a generator measurement display is selected.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Activation generator 2 Generator control panel 3 Generator load 4 Input part 5 A / D conversion part 6 Information processing control part 7 Information display part 7a Touch panel 8 Output part 9 Power supply part 10 This device 11 Diesel engine 12 Alternator 16 Transducer 20 Main body of case 21 Lid 40 Numeric keypad

Claims (2)

[Claims] 1. An input unit connected to a control panel of a generator to be monitored, for inputting an analog signal and a digital signal necessary for obtaining monitoring information, and an A / D for converting the analog signal into a digital signal. A conversion unit, an information display unit that displays a screen including a part necessary for operating the device and a part indicating a monitoring result, and an operation unit for switching display contents of the information display unit and setting display conditions, Performs information processing of the input digital signal and the output signal of the A / D conversion unit, displays the result on the information display unit, and displays the information when a signal for scaling is input from the operation unit. An information processing control unit that performs processing so that a display scale on the display unit is changed in the processing; the input unit, the A / D conversion unit, the information display unit, the operation unit, A generator and a portable monitoring device for a generator control panel, wherein the information processing control unit is configured to be housed in one housing. 2. A touch panel constituting a display surface of the information display unit also serves as an operation unit, and switching of display contents of the information display unit and setting of a display scale as a display condition include:
The portable monitoring device for a generator or a generator control panel according to claim 1, wherein the monitoring is performed based on an operator's touch on the touch panel.