JPS63148383A - Recorder system for ic card - Google Patents

Abstract

PURPOSE:To record a measured value that changes secularly like a wattmeter, etc., on an IC card and also to display a compressed data visually at need. CONSTITUTION:A data obtained from the wattmeter 1, after being converted to a digital data at an A/D converter 2, is written on a card reader/writer device 10. Simultaneously, it is compared with a value representing abnormality in which the value of the data is set in advance, and an alarm device is operated when the abnormality is generated. Also, it is possible to display a content recorded on the IC card when desired on a CRT11 at arbitrary speed, and also, to print the calculated value of the data in a prescribed period on a sheet 13 with a printer 12.

Description

[Detailed Description of the Invention] A. Object of the Invention [Field of Industrial Application] The present invention relates to a so-called data logger device for collecting, displaying, and managing chronological data such as electric power needles. More specifically, the present invention relates to an IC card recorder system that records, displays, and/or prints collected data on an IC card.

[Conventional technology]

Analog recording devices are widely used to manage data on devices such as power meters that change over time. This recording device is called an XY recorder or pen recorder, and uses a recording pen to record on a recording sheet that is driven at a constant speed. The administrator checks and examines the recorded contents at predetermined intervals to discover abnormalities and obtain data for management. That is, in order to manage the wattmeter, etc., the voltage, current, power, phase, etc. obtained from the wattmeter 1 as shown in FIG.
Conventionally, various analog data such as power factor and temperature are sent to a device 15 such as a pen recorder and recorded on recording paper that moves at a constant speed. On the other hand, in the case of a digital type, the values measured at predetermined time intervals are calculated and printed out, creating a so-called log sheet.

FIG. 2 is a block diagram of a conventional device that performs digital processing, in which multiple pieces of data obtained from the power device 1 are switched by a switching device 16 and sent to an A/D converter 17 to convert them into digital values. After conversion, display on CRT 19 and printer 2 under the control of interface and control circuit 18
Printing is performed at 0.

[Problems to be solved by the invention] However, with analog type devices, not only do you have to be careful when handling the device, but the paper moves at a constant speed regardless of the size of the change, so it is difficult to handle minute changes. Attempting to record changes requires a large amount of paper, making it impractical. Furthermore, even if the paper is driven and recorded at a practical drive speed, the administrator must check the long paper, which requires a great deal of effort and time. Furthermore, since the device is large-sized, it is often attached to power equipment or the like from the beginning, making it difficult to manage it at a remote monitoring station or the like.

In addition, with the digital type, the values measured at predetermined time intervals are printed out by the printer 20, so accurate values can be obtained as data, but it is difficult to immediately grasp the tendency of the data as a whole or a part at a specific time. That is difficult.

Furthermore, in any device, it is impossible to display only a desired portion by changing the degree of time compression. For this reason, there has been a demand for a recording system that is compact, can handle a large amount of data, and can instantly grasp data trends at any given point in time.

The present invention has been made in response to such demands, and it records measurement values that change over time on a power needle, etc., on an IC card, and also visually displays compressed data as necessary. Another object of the present invention is to provide an IC card recorder system that can reduce the size of data media and improve operability.

Configuration of the Invention [Means for Solving Problems] The present invention is capable of recording measurement values that change over time on an IC card by including at least an input signal converter and an IC card reading/writing device. This is an IC card recorder system, and a diagram of its principle is shown in FIG. That is, a recorder system is shown for recording and displaying time-varying measured values from a power meter 1, etc., which includes an input signal converter for converting said measured values into corresponding digital values. 2 (usually an A/D converter), a card reading/writing device 3 for writing the converted digital value onto the IC card and reading the contents recorded on the IC card, and further as necessary. The device includes a compression circuit 6 for compressing data read from an IC card, and a display means 5 for visually displaying the measured value.

[For production]

Measured values that change over time from the wattmeter 1 etc. are converted into digital values by the input signal converter 2, and then written to the IC card by the card reading/writing device 3 and recorded on the IC card. The contents are read out. Further, an arbitrary part of the measured value is time-compressed by the compression circuit 6 and visually displayed by the display means 5.

〔Example〕

FIG. 5 is a perspective view of an embodiment of the invention, the entire device being designated by the reference numeral 4. This device 4 includes a current value display section 8 of each meter, an alarm setting knob 9, a card reading/writing device 10, a CRT II, a printer 12, and a printing paper 1.
3, the CRTII, the operation buttons 14 of the printer 12, etc. are included. In this device, the data obtained from the wattmeter 1 is converted to the A/D
After being converted into digital data by a converter, it is written to the card reading/writing device 10. At the same time, the data value is compared with a preset value indicating an abnormality, and in the event of an abnormality, an alarm device (not shown) is activated. Also,
When desired, the contents recorded on the IC card can be displayed on the CRT II at any speed, and the calculated values of data for a predetermined period can be printed on paper 13 by the printer 12. Of course, it is also possible to time-compress and display the data of the IC card reproduced in the CRT II, and if a dot matrix type printer is used as the printer 12, it is also possible to print graphs.

FIG. 4 shows an example in which the device 4 and the power meter 1 are coupled through a communication line. That is, after the data from the wattmeter 1 is converted into a digital value by the input signal converter 2, the data is sent to the modem device 2.
5 and sent to the telephone network 7. On the other hand, the data transmitted via the telephone network 7 is demodulated into original digital data via the modem device 26 on the receiving side, and then taken into the device 4. In this case, the device 4 may not be provided with the input signal converter 2.

Note that it is also possible to configure the system using a network such as a LAN connected by an optical cable or the like without using the telephone network 7, and in this case, high-speed data transfer is possible.

Effects of the Invention As described above, according to the present invention, measured values that change over time from a power meter, etc. are stored in an IC card, and are compressed as necessary so that they can be visualized as data. Since the information is displayed, it is possible to reduce the size of the data medium and improve the operability, which is extremely useful in practical terms.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the conventional example, FIG. 2 is a block diagram of the conventional example, FIG. 3 is a principle diagram of the present invention, FIG. 4 is a block diagram of an embodiment of the present invention, and FIG. 5 is a block diagram of the present invention. It is a perspective view of an example. Explanation of symbols 1--power needle, 2--human power signal converter, 3--card reading/writing device, 5--display means, 6--compression circuit, 7---telephone network, 10--. Card reading/writing device, 25.26--modem

Claims (6)

[Claims] (1) At least an input signal converter and an IC card reader/
An IC card recorder system that is equipped with a writing device to record measurement values that change over time on an IC card. (2) The IC card recorder system according to claim 1, wherein the input signal converter is an A/D converter. (3) The IC card recorder system according to claim 1, comprising display means for visually displaying measured values. (4) The IC card recorder system according to claim 3, wherein the display means comprises a current value display section and a CRT. (5) Claim 1, characterized by comprising an alarm means for generating an alarm when the measured value exceeds a set value.
The IC card recorder system described in Section 1. (6) A modem device for transmitting the output of the A/D converter via a communication line, and a modem device for demodulating the transmitted output and
The IC card recording according to claim 1, further comprising a modem device for writing to a C card, and the measured value is recorded on an IC card set in a recording system at a remote location. meter system.