JPH05242266A - Waveform monitoring and measuring instrument - Google Patents

Abstract

PURPOSE:To analyze and monitor a waveform in more detail by providing an analyzer which analyzes data inputted by a recorder and/or logger, and a pattern checker for the data. CONSTITUTION:A waveform-monitoring and measuring instrument 10 is equipped with the analyzer which performs analytic processing on collected data and the pattern checker in addition to a recorder which collects ordinary data, the logger which collects the data as performing algorithm, and a monitor which displays the recorder and the logger, and it is constituted integrally by housing them in one case. Therefore, it is possible to perform the analytic processing according to a program in which the collected data is set in advance, and furthermore, to perform pattern check whether or not waveform data is within a range set in advance, therefore, the operating status of facility or a system can be checked.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waveform monitoring / measuring device which can be connected to equipment or a system to monitor the waveform of an output digital or analog amount and to issue an alarm if necessary. ..

[0002]

2. Description of the Related Art Conventionally, when a facility or system is monitored, an analog or digital amount of each device is taken in by a recorder or a logger and displayed on a monitor for further monitoring. The signal analysis and the signal processing were performed by inputting into a computer programmed separately from the above device.

[0003]

However, when the equipment or system becomes large, it is necessary to monitor a large number of devices, and for this reason it is necessary to make a program for each device to be monitored, and moreover, it is necessary to put it on the market. There is a problem in that it is inconvenient and time-consuming to process and use the above device. Further, since there is no waveform measuring instrument having means for analyzing the inputted waveform as required, it is impossible to sufficiently monitor the equipment or system. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a waveform monitoring / measuring apparatus that is capable of performing waveform analysis and pattern checker of an input analog quantity and digital quantity, which is entirely composed of one measuring instrument. To do.

[0004]

A method according to the above-mentioned object.
The waveform monitoring and measuring apparatus described is a recorder that collects normal data, a logger that collects data while performing an algorithm, a monitor that displays the recorder and the logger, and a data input by the recorder and / or the logger. And a pattern checker for the data, which are housed in one case and are integrally formed.

[0005]

In the waveform monitoring and measuring apparatus according to claim 1,
In addition to the recorder and logger, the recorder has an analyzer for analyzing the collected data and a pattern checker. Therefore, the collected data can be analyzed according to a preset program, and a pattern checker can be performed to determine whether the waveform data is within a preset range. You can check the operating status of the system.

[0006]

Embodiments of the present invention will now be described with reference to the accompanying drawings to provide an understanding of the present invention. 1 is a block diagram of a waveform monitoring and measuring apparatus according to an embodiment of the present invention, FIG. 2 is a flow chart of the apparatus, and FIG. 3 is an external view of the apparatus.

As shown in FIG. 1, in the waveform monitoring and measuring apparatus 10 of the present invention, as input circuits, 32 channel analog input circuits 11 and 32 channel digital input circuits (contact input circuits) 12, 13 are provided. 8-channel measurement condition input circuit 14, 4-channel external interrupt circuit 15, and 4-channel trigger signal input circuit 1
6 and 6. The analog input circuit 11 includes a multiplexer 17 that switches input signals, an amplifier 18 that amplifies the output of the multiplexer 17, and an A / D conversion circuit 19 that AD converts the output of the amplifier 18. Each analog input is converted into a digital number and is taken into the device for signal processing. The digital input circuits 12 and 13 are respectively buffer circuits 20 and
21 is provided so that the input digital signal is temporarily stored. Further, the measurement condition input circuit 14, the external interrupt circuit 15, and the trigger signal input circuit 16 are also provided with buffer circuits 22 to 24, respectively, to temporarily store the input digital signal.

As output circuits, an alarm output circuit 25 for 8 channels, a trigger output circuit 26 for 1 channel, and two RS2s for interfacing with the outside are provided.
32C connection terminals 27 and 28 and GP-IB connection terminal 29
And a printer connection terminal 30 and a local network terminal 31 which is a transmission means between groups.
The RS232C connection terminals 27 and 28, GP-I
An option board is required for the B connection terminal 29, the printer connection terminal 30, and the local network terminal 31. The input circuit and the output circuit are the expansion bus 32.
Via two central processing units (CPU) 33,
34, a clock 35 and a RAM 36 are connected to the central processing unit 33, and a 2-port RAM 37 is connected to the central processing unit 33. The two-port RAM 37, the ROM 38, another RAM 39, and the watchdog timer 40 are connected to the central processing unit 34. A control program for an interface to the outside and a program for operating the display are written in advance in the ROM 38, and the watchdog timer 40 is provided for detecting runaway of the CPU 34.

IC card input / output devices 42 and 43 are connected to the central processing units 33 and 34 via an IC card interface 41, and a liquid crystal display interface 44 is connected to the central processing unit 34. LCD display 45 and keyboard interface 4
A keyboard 47 is connected via 6. And
These are integrated and housed in a case 48 as shown in FIG. 3, and the liquid crystal display 46, I
C card input / output devices 49 and 50 and a control keyboard 47 are arranged.

Next, the operation and usage of the waveform monitoring and measuring apparatus 10 will be described. First, when the power switch is turned on, a memory check and an internal battery check are performed, and if there is an abnormality, a warning is issued and processing is stopped. After confirming that these are normal, first, as shown in FIG. 2, measurement parameters are input from the keyboard 47 (step a). The measurement parameters refer to measurement conditions such as measurement channel designation, sampling time, and the number of times of repetition, which are determined in advance and input while displaying on the liquid crystal display 45 from the keyboard 47, and the execution key is pressed. Take it in by. Next, set the measurement alarm environment setting conditions using the keyboard 4
Input from 7 (step b), but this operation is also performed by the display 4
While watching 5, input from the keyboard 47, and press the enter key to take it in. Thereby, the measurement start condition and the alarm output condition are set. next,
If an option board is used, its setting is performed (step c).
The RS232C connection terminals 27, 28, the GP-IB connection terminal 29, the printer connection terminal 30, and the board for driving the local network terminal 31 are referred to as a board or the like, and it is necessary to set the signal system according to external conditions. is there.

After making the above settings, measurement is started.
As a result, the signal input from the input terminal is measured based on the conditions set in steps a to c (step d). Next, it is selected whether to analyze the data collected by the above process (step e), perform analog pattern matching (step f), or perform data dump (step g). In the case of processing / analyzing the analyzed data (step e), this analysis is performed by the processing program input in advance,
For example, frequency analysis of collected data, XY synthesis, filtering, calculation of maximum / minimum or average value, standard deviation,
Analyze screen display magnification change, transfer function conversion, etc. This analysis software is input to the IC cards 42 and 43 in advance, and is taken into the device through the IC card interface 41. Alternatively, in some cases, it is possible to put the data in the device in an IC card and analyze the data recorded in the IC card on another personal computer using another IC card interface. The above means constitute the analyzer. Then, when analog pattern matching is performed, step f is selected. As a result, the pattern of the selected and measured data is compared with the normal pattern of the data collected in the past (pattern check), and when the value exceeds the preset value,
It is designed to emit a warning signal. The pattern checker is configured by the above means. It is also possible to perform a data dump if necessary (step g).
However, since this data dump is not understood by the data in the device, the internal data can be converted into ASCII code and viewed. After setting the option board (step c), it is possible to select to display real-time data (step h). As a result, the current collected data is displayed on the display 45 and acts as a monitor. As shown in FIG. 2, while repeating the above steps, the waveform of the signal generated from the system is recorded, analyzed, and monitored.

[0012]

As is apparent from the above description, the waveform monitoring and measuring apparatus according to the present invention has an analyzer for analyzing data input by a recorder and / or a logger, and a pattern checker for the data. As such, the waveforms of the system can be analyzed and monitored in greater detail. Since these devices are housed in one case, they are convenient to carry, and there is no need to bother with individual devices for processing as in the conventional case.

[Brief description of drawings]

FIG. 1 is a block diagram of a waveform monitoring and measuring apparatus according to an embodiment of the present invention.

FIG. 2 is a flowchart of the device.

FIG. 3 is an external view of the same device.

[Explanation of symbols]

 10 Waveform Monitoring and Measuring Device 11 Analog Input Circuit 12 Digital Input Circuit 13 Digital Input Circuit 14 Measurement Condition Input Circuit 15 External Interrupt Signal Input Circuit 16 Trigger Signal Input Circuit 17 Multiplexer 18 Amplifier 19 A / D Converter Circuit 20 Buffer Circuit 21 Buffer Circuit 22 buffer circuit 23 buffer circuit 24 buffer circuit 25 alarm output circuit 26 trigger output circuit 27 RS232C connection terminal 28 RS232C connection terminal 29 GP-IB terminal 30 printer terminal 31 local network terminal 32 expansion bus 33 central processing unit 34 central processing unit 35 Clock 36 RAM 37 2 Port RAM 38 ROM 39 RAM 40 Watchdog Timer 41 IC Card Interface 42 IC Car 43 IC card 44 LCD display interface 45 display 46 keyboard interface 47 keyboard 48 Case 49 IC Card Devices 50 IC Card Devices

Claims (1)

[Claims] 1. A recorder for collecting normal data, a logger for collecting data while performing an algorithm, a monitor for displaying the recorder and the logger, and analyzing data input by the recorder and / or logger. A waveform monitoring / measuring apparatus having an analyzer and a pattern checker for the data, which are housed in one case and integrated.