KR100307011B1 - Digital measurement device having remote control function using internet and controlling method thereof - Google Patents

Abstract

PURPOSE: A digital measurement device having a remote control function using internet and a controlling method thereof are provided to perform a remotely measuring function by connecting an extended card having processing blocks to a personal computer. CONSTITUTION: A measurement terminal portion(20) has a strobe terminal for measuring an electric parameter. An extended module(18) has an analog signal processor for controlling a measuring range and a measuring condition according to a control signal and a measuring circuit block for measuring a received signal. A desktop computer(10) and a notebook computer(12) receive a control command from a remote computer(22) through the internet(14), control the analog signal processor of the extended module(18), process the measured value, store the processed value, display the processed result on a screen, and the measured value to the remote computer through the internet(14).

Description

Digital measuring device having telemetry function using internet network and its control method

The present invention relates to a remote digital measurement apparatus and a control method, and more particularly, to a digital measurement apparatus having a telemetry function using an internet network and a control method thereof.

In general, most instruments such as oscilloscopes that display waveforms such as voltages and currents on the screen include circuits that allow you to choose to amplify or attenuate analog signals input from the measurement terminals, as well as internal or external triggers on level controlled signals. It has a structure that displays signals on the screen by applying signals to the X and Y axis deflection plates together with the signals. Recently, the technology of low-power microcontrollers has become popular, and an A / D (analogue to digital) converter is built into the microcontroller. Various digital instruments such as digital multimeters and digital clamp meters are becoming common.

Most of these high-precision digital measuring instruments use a plurality of A / D converters in combination with a multiplexer to determine the number of input channels and determine the specifications such as measurement frequency range, speed, and resolution. Also determined according to this, operation functions, storage functions, input / output functions, etc., which could not be implemented in an analog instrument, may be added.

The commonality of most digital instruments is that the A / D converter converts the analog signal level into a digital value through an attenuator that amplifies or attenuates the applied input signal to a certain range that can be processed by the A / D converter. Voltage, current, and waveforms measured on the LCD (liquid crystal display) or CRT (cathode ray tube) screen by the firmware where the controller and the calculation software are stored. In order to display, the high computational processing speed of the software and the processor for displaying the same or more effects as the existing analog instrument was required.

Among the cost components of the dedicated digital measurement airflow, the ratio of digital signal operation and processing, display, and calculation processing functions, which are required, is somewhat different depending on the instrument, but it is generally expensive because it accounts for a large part of the manufacturing cost. There was a limit to the cost of digital instrumentation.

In addition, microprocessors used in digital instruments do not require fast processing power compared to 32- and 64-bit microprocessors such as Pentium and MMX that are commonly used to implement multimedia in PCs. Even the very simple contents are stored in firmware and used, but the GPIB (General Purpose Interface bus) connection function and memory function have been added, which has caused the price increase of the instrument.

In addition, some conventional digital instruments only send and receive simple signals to and from computers, such as PCs or workstations, located near the instrument via GPIB or RS-232C serial ports, and remotely display waveforms displayed on the digital oscilloscope in the field. It is not possible to select the measurement range of the on-site digital oscilloscope or transmit it to a remote site.

As a result, it is inexpensive as a high-precision measuring device, and the high-precision measuring device having the function to support the maintenance and research work of the device by controlling the measuring range remotely by viewing the current and voltage waveforms transmitted to the remote place by measuring the data measured by the measuring device Was required.

The technical problem to be achieved by the present invention is to connect the expansion card containing the main processing block of the digital instrument to the PC to measure, analyze the measured values and display on the PC screen, control and measure the instrument through the Internet network The present invention provides a digital measuring device having a telemetry function using an internet network that supports device repair while transmitting waveform data on a screen of a remote computer, and a method of controlling the same.

1 is a connection diagram of a digital measurement apparatus having a telemetry function using the Internet according to the present invention.

FIG. 2 is an external view showing an embodiment of the measurement terminal shown in FIG. 1.

3 is a block diagram showing an embodiment of an expansion card built in the PC of FIG.

<Description of Symbols for Major Parts of Drawings>

10 ... Desktop PC 12 ... Notebook

14 ... internet network, 18 ... expansion module

20 ... measuring terminal, 22 ... remote computer

According to the present invention for achieving the above technical problem, a digital measuring device having a function of controlling a measurement condition and a range from a remote computer using the Internet network and transmitting the measured value to the remote computer measures an electrical parameter Measuring terminal unit for; An expansion card for controlling an input signal range according to a control signal and having a measuring circuit block for measuring a signal flowing from the measuring terminal; The expansion card is mounted in the built-in slot, and the control card is controlled by inflow of a control command received from the remote computer through the Internet or inputted on a graphical user interface (GUI) method, and the measured data is calculated, processed and stored. And a personal computer for displaying on the screen and transmitting the measured value to the remote computer through the Internet.

A digital measuring device having a function of controlling a measurement condition and a range in a remote computer by using an internet network for achieving the another technical problem, and transmitting a measured value to the remote computer, the measuring terminal unit for measuring electrical parameters; An expansion module for controlling a measurement range according to a control signal and including a measurement circuit block for measuring a signal flowing from the measurement terminal; An expansion card connected to the expansion module and having an A / D conversion, amplification, and attenuation function of measured data; The expansion card is mounted in a built-in slot, and the control card is controlled by receiving a control command received from the remote computer through the Internet or inputted on a graphical user interface (GUI) method, and calculating and processing the measured value. It stores and displays on the screen, characterized in that it comprises a personal computer for transmitting the measured value to the remote computer via the Internet.

The measuring terminal further comprises a sensor.

The method for controlling digital measurement using a remote computer and a PC with an expansion card connected to the measurement terminal unit for achieving the above another technical problem and having a main circuit block for digital measurement is performed using a GUI method in the remote computer. Setting and transmitting a measurement range; Controlling an analog signal processor of the expansion card according to a control signal received from the PC to set an input range of measurement data; The measured signal flowing from the measuring terminal is processed according to the input range set in the expansion card, the data measured by the PC is calculated, processed, stored and displayed on the screen, and the measured value is stored on the remote computer through the Internet. It characterized in that it comprises the process of transmitting to.

1 shows a connection diagram of a digital measuring device having a telemetry function using the Internet according to the present invention.

In FIG. 1, a measurement terminal unit 20 having a strobe terminal for measuring electrical parameters, an analog signal processor for controlling a measurement range and measurement conditions according to a control signal, and a measurement circuit block for measuring an incoming signal The control module received from the remote computer 22 through the Internet and the expansion module 18 to control the analog signal processor of the expansion module 18, and calculate, process and store the measured values on the screen. A desktop computer 10 and a notebook computer 12 are displayed for displaying and transmitting the measured values to the remote computer via the Internet.

Here, although not shown in the expansion card, the A / D converter, an analog amplifier, and an attenuator having a common function generally required for measurement may be provided and used in connection with an expansion module having various measurement functions. It can include a measurement circuit block for measuring specific electrical parameters included in the expansion module without.

In addition, as shown in FIG. 2, the measurement terminal unit 20 includes an RS-232C interface unit 21 for RS-232C communication with the expansion module as an option and can be measured wirelessly. It can be provided. In addition, it can be connected to a printer port as well as a universal bus port capable of high-speed transfer such as USB (Universal Serial Bus) and SCSI.

The notebook computer 12 is a PCMCIA (Personal Computer Memory Card Interface Association) which can be used to expand various peripherals such as modems, LAN cards, pagers and digital cellular, memory expansion, hard disk drivers, CD-ROM drivers, and digital cameras. You can install a card.

As shown in FIG. 3, the expansion card including the main circuit block of the digital oscilloscope using the PCMCIA card may include a first channel measuring unit 30, an analog signal processor 40, a second channel measuring unit 50, and a controller ( 60). The first channel measuring unit 30 receives the infrared data transmitted by IrDA communication standard from the filter unit 310 and the measuring terminal unit 20 for inputting the signal of the measurement band from the measuring terminal unit, which is not shown, and converts it into an analog signal. Digital switch / relay and resistor for attenuating the measurement signal inputted through the filter unit 310 at a constant rate according to the control signal of the IrDA interface unit 311 and the control unit 60 outputted to the filter unit 310 Analog signal processor 40, attenuation / amplification circuit 312 composed of a plurality of stages for attenuating or amplifying the signal output from the analog signal processor 40 to a range of signals having a predetermined amplitude, 314), a trigger signal processor 316 for triggering an input signal, an A / D converter 318 for converting an analog signal into a digital signal, and a digital data value converted in order to sequentially output the digital signal. It is composed of a not shown for the calibration and correction circuit has a FIFO memory unit 320.

Reading and setting the initial resistance value of the analog signal processor 40 through the data input / output port of the PCMCIA card provides a graphical user interface (GUI) by selecting a control panel located on the right side of the PC window with a mouse click. To select the input range. In the PCMCIA card, if the cursor is clicked on the screen of the Windows environment without the switch on the operation panel, which is essential for setting the input conditions of the instrument such as a general oscilloscope, the analog signal processor 40 in the PCMCIA card is set to the corresponding value. It works as a software that selects and connects, and has the same effect as selecting an input range from the actual control panel.

According to the present invention, various electronic instruments such as a digital oscilloscope, a digital logic analyzer, a digital spectrum analyzer, a digital protocol analyzer, and a digital field strength meter can be implemented according to the size, input / output port, and data transmission speed of the PCMCIA card. In addition, the sensors are attached to the measurement terminal unit 20 such as digital medical devices, environmental analyzers, automotive ECU (Engin Control Unit), temperature, illuminance, speed, acceleration, distance, etc. You can implement the instrument.

In addition, the data measured by the user is connected to a public communication network such as the Internet by using a modem or a dedicated line from a personal computer to an expert in a remote diagnosis center required for maintenance of specialized equipment such as medical equipment or aircraft maintenance. By transmitting, the expert and the non-expert who are users of the field can remotely check and repair the abnormality of the device while watching the same measurement screen, and can support R & D remotely. Some of these models can be applied to the GPIB of the conventional digital oscilloscope.

According to the present invention, by installing a general-purpose notebook and digital measurement hardware modules and software, users can purchase and operate ultra-precision instruments at low cost, and do not need to separately purchase various digital instruments such as a conventional digital multimeter or digital oscilloscope. In addition, various complex functions such as repair or diagnostic support can be simultaneously implemented using the Internet network.

In addition, it is not limited to simply displaying information measured by general-purpose instruments to the display unit. It is a measurement application software using Windows 95's multi-trading and Windows functions, and it is possible to enlarge and reduce measured waveforms on a high-resolution screen of a PC. In addition, it is possible to use the Widows function that displays, saves, processes, and simulates measurement data on several screens. It can have a measurement function that implements the measured data in multimedia while doing.

Claims (6)

A digital measuring device having a function of controlling a measurement condition and a range from a remote computer using an internet network and transmitting the measured value to the computer. A measurement terminal unit for measuring electrical parameters; An expansion card for controlling an input signal range according to a control signal and having a measuring circuit block for measuring a signal flowing from the measuring terminal; The expansion card is mounted in the built-in slot, and the control card is controlled by inflow of a control command received from the remote computer through the Internet or inputted on a graphical user interface (GUI) method, and the measured data is calculated, processed and stored. And a personal computer which displays on the screen and transmits the measured value to the remote computer through the Internet. The digital measuring device having a telemetry function using an internet network according to claim 1, wherein the measuring terminal further comprises a sensor. A digital measuring device having a function of controlling a measurement condition and a range from a remote computer using an internet network and transmitting the measured value to the computer. A measurement terminal unit for measuring electrical parameters; An expansion module for controlling a measurement range according to a control signal and including a measurement circuit block for measuring a signal flowing from the measurement terminal; An expansion card connected to the expansion module and having an A / D conversion, amplification, and attenuation function of measured data; The expansion card is mounted in a built-in slot, and the control card is controlled by receiving a control command received from the remote computer through the Internet or inputted on a graphical user interface (GUI) method, and calculating and processing the measured value. And a personal computer for storing and displaying on the screen and transmitting the measured values to the remote computer via the Internet. The digital measuring device having a telemetry function using an internet network according to claim 3, wherein the measuring terminal further comprises a sensor. The method of claim 3, wherein the expansion card Digital measuring device having a telemetry function using the Internet network, characterized in that the PCMCIA (Personal Computer Memory Card Interface Association) card. In a method for controlling digital measurement by using a PC and a remote computer connected to the measurement terminal unit and having an expansion card having main circuit blocks for digital measurement, Setting and transmitting a measurement range in a GUI manner in the remote computer; Controlling an analog signal processor of the expansion card according to a control signal received from the PC to set an input range of measurement data; Process the measured signal from the measuring terminal according to the input range set in the expansion card, calculate, process, store and display the measured data on the PC, and display the measured data on the remote computer via the Internet. Digital measurement control method having a telemetry function using the Internet network, characterized in that it comprises the step of transmitting to.