JP2000147019A - Digital oscilloscope with Internet connection function - Google Patents

Abstract

(57) [Summary] [Problem] To provide a digital oscilloscope with an Internet connection function capable of collecting low-cost and flexible data of observation data at a remote place. A digital oscilloscope having means for setting an observation condition for observing an input signal, means for setting an observation condition under control of an external device, and means for outputting digital data obtained by converting the input signal to the external device. In addition, it has a function of controlling various line terminating devices for connecting to the Internet and connecting to the Internet, and setting and setting observation conditions by controlling from the external device connected via the Internet. Change and output of digital data are enabled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital oscilloscope, and in particular, to an external device,
For example, the present invention relates to a digital oscilloscope with an Internet connection function having a function of setting and changing observation conditions and the like and outputting digital data under the control of an external device by connecting to a personal computer (hereinafter, referred to as a personal computer). Things.

[0002]

2. Description of the Related Art Digital oscilloscopes are suitable for observing digital waveforms, and performance has been improved with the progress of digital technology.
The observation functions have been diversified in accordance with the diversification of various devices to be observed. For example, a digital oscilloscope equipped with a function that enables setting, changing, and transferring input data, that is, a so-called remote control function, by connecting to an external device that has a control function such as a personal computer, can be controlled by the personal computer. is there. The connection between this digital oscilloscope with remote control function and a personal computer is
An interface is required because it cannot be directly connected, but the interface used is IEEE
(Institute of Electrical
and Electronics Engineers
= IEEE48 standardized by the Institute of Electrical and Electronics Engineers
8 interfaces (usually GPIB = General
It is called Purpose Interface Bus. ), EIA (Electronic In)
The RS-232C interface standardized by the Industry Association (US) is generally used. This IEEE488
To connect a digital oscilloscope to a personal computer using an RS-232C interface or an RS-232C interface, as shown in FIG. An interface circuit (not shown) is required for both the personal computer 24 for controlling the digital oscilloscope 21, and both interface circuits are used by connecting them with a cable 23 dedicated to the interface circuit. However, the length of the cable, that is, the distance between connected devices is determined by the interface standard, and the dedicated cable 23 cannot be used with the connected devices separated by more than the standard distance. By the way, various large-sized devices are installed and used in various places. At times, irregular phenomena such as erroneous operations due to fluctuations in power supply must be monitored at a remote location where the large-sized devices are installed. Failures that cannot be grasped may occur. Moreover,
Due to the increase in the number of installations of various large-sized devices, the number of problems tends to increase. In the case of such an irregular malfunction with low reproducibility, it is necessary to stay at the site where the large-sized device is installed for a long period of time to grasp the problem. This is a problem that is needed, especially in remote locations, which requires more cost. Therefore, we would like to use a digital oscilloscope connected to a personal computer to observe such problems as large equipment in remote locations. Cannot be used with the same connection. One solution to such a case is to use a modem and a public line as in a digital oscilloscope with a line connection function disclosed in Japanese Patent Publication No. 8-76442.

[0003]

The above-mentioned prior art has two major disadvantages. One is that the cost of using a public line is high when the use is for a long time, such as when constantly monitoring a remote place. The second point is that it is basically difficult to monitor from two places at the same time.

An object of the present invention is to eliminate these disadvantages and realize a flexible use method such as lower cost and multi-point monitoring.

[0005]

According to the present invention, in order to achieve the above object, a digital oscilloscope according to the present invention comprises means for setting observation conditions for observing a signal input from a signal input terminal by operation control means having the same. A digital oscilloscope having means for setting an observation condition for observing a signal input from a signal input terminal by control from an external device and means for outputting digital data obtained by converting a signal input from the signal input terminal to the external device, An input / output unit for inputting and outputting signals and data to and from an external device, an internet control unit for controlling various terminal devices for connecting to the Internet to connect to the Internet, and a control from the external device for observation. It has a setting control unit for setting and changing conditions and outputting digital data. Performs connection via the Internet with the external device, the control of the connected the external device, setting of observation conditions, is capable of performing the output changes and the digital data.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a digital oscilloscope with an Internet connection function according to the present invention will be described with reference to FIGS. FIG. 1 is a block diagram of a digital oscilloscope with an Internet connection function of the present invention, and FIG. 2 is a digital oscilloscope with an Internet connection function of the present invention for observing a signal waveform or the like of an object to be measured in a remote place, and a personal computer for collecting observation data. Is a block diagram of an observation system in which is connected by various lines.
In FIGS. 1 and 2, reference numeral 2 denotes an object to be measured of a large-sized apparatus which is installed in a remote place and is an object to be observed;
Digital oscilloscope with an Internet connection function for observing signal waveforms, etc., 4 and 6 are Internet line terminators, 3 and 7 are interface standard cables connecting to 4 and 6, 5 is the Internet, 8 is the Internet connection function Shows a personal computer installed at a maintenance center, for example, for controlling observation condition settings of the digital oscilloscope 10 with the function and processing transmitted observation data. The digital oscilloscope 10 with an Internet connection function has the same function as the conventional one. A digital oscilloscope unit 11 having
An internet connection control unit 12 for controlling internet connection via a line termination device, an input / output unit 13, and a digital oscilloscope unit 11 controlled by an external device.
And a setting control unit 14 for controlling the observation condition setting.

The digital oscilloscope 10 with the Internet connection function can be used in a remote location where the device under test 2 of a large-sized device having a problem is installed, for example, a signal waveform to be observed by the device under test 2, for example, a required output waveform or a power supply waveform. The signal input terminal 15 of the digital oscilloscope unit 11 is connected to a required part of the device under test 2 so as to observe. The digital oscilloscope unit 11 having the same functions as the conventional one observes the signal waveform to be observed of the device under test 2, for example, the required output waveform and the power supply waveform, as in the conventional case. The Internet connection of the digital oscilloscope 10 with the Internet connection function is performed by the Internet connection control unit 12.
From the Internet line termination device 4 via the input / output unit 13. The Internet line terminating device 4 is connected to the Internet through an Internet connection company called a provider through a line such as a dedicated line or ISDN. Also,
The Internet 5 is connected to, for example, an Internet line terminating device 6 installed in a maintenance center having maintenance personnel, and is connected to a personal computer 8 operated by the maintenance personnel and collecting data. On this personal computer, maintenance personnel can use the personal computer 8 to collect required output waveforms and power supply waveforms observed by the digital oscilloscope unit 11 using Internet browsing software generally called a browser. The digital oscilloscope unit 11 converts a signal waveform, which is input to the signal input terminal 15, which is desired to be observed by the device under test 2, into digital data, and stores the digital data. Of course, since the digital oscilloscope unit 11 has the same function as the conventional digital oscilloscope, the digital oscilloscope unit 11 can be operated and controlled even in a remote place to observe the waveform as in the conventional case. The digital data stored in the digital oscilloscope unit 11 is output via the input / output unit 13 and transmitted to the personal computer 8 connected to the Internet line terminal 4, the Internet 5 and the Internet line terminal 6. The personal computer 8 collects data and sets and changes observation conditions of the digital oscilloscope unit 11 at a remote location as needed.
In order to cope with the above settings, the digital oscilloscope with an Internet connection function has a protocol stack of Tcp / ip, which is an Internet protocol, as a program executed on an internal processor, and interactively changes observation conditions and the like. It is necessary to operate as a so-called WWW server that transmits a procedure for performing it as data in a hypertext transfer language (HTML) format to a maintenance center, which is a monitoring point, in the form of HTML (hypertext makeup language). In FIG. 2, the Internet line termination device is shown as being outside the digital oscilloscope with the Internet connection function. However, this portion can be built into the digital oscilloscope and integrated.

[0008]

According to the present invention, the use of the Internet, which has been remarkably widespread in recent years, makes it possible to reduce the communication cost and to easily respond to requests for monitoring at a plurality of maintenance centers. An observation system can be constructed.

[Brief description of the drawings]

FIG. 1 is a block diagram of a digital oscilloscope according to an embodiment of the present invention.

FIG. 2 is a block diagram of an observation system according to the embodiment of the present invention.

FIG. 3 is a block diagram of a conventional system.

[Explanation of symbols]

10: Digital oscilloscope with Internet connection function, 11: Digital oscilloscope unit, 12: Internet connection control unit, 13: input / output unit, 14: setting control unit, 15: signal input terminal.

Claims (1)

[Claims] A means for setting an observation condition for observing a signal input from a signal input terminal; a means for setting an observation condition for observing the input signal by control from an external device;
A digital oscilloscope having means for outputting data obtained by digitally converting the input signal to an external device, comprising: an input / output unit for inputting / outputting signals and data to / from the external device; and a line terminating device for connecting to the Internet. An Internet control unit for controlling connection to the Internet, and a setting control unit for setting, changing, and outputting digital data of observation conditions under the control of the external device. A digital oscilloscope with an Internet connection function, wherein a connection is made, and under the control of the connected external device, setting and changing of observation conditions and output of digital data are performed.