JP3325429B2 - Electronic recorder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic recorder for recording a change in an electric signal indicating a process amount such as a temperature, a pressure and a flow rate.

[0002]

2. Description of the Related Art Generally, an electronic recorder which receives an electric signal is used to measure a process amount such as temperature, pressure, flow rate and the like, and record a change. Used to monitor and record changes in status. Specifically, it is often used to record when a device that continues to operate at a high or low temperature, such as an environmental test, is broken.

FIG. 3 is a block diagram showing a conventional electronic recorder. In FIG. 3, reference numeral 1 denotes an amplifying unit for amplifying an input signal from an input terminal 1a corresponding to a process amount such as, for example, temperature, pressure, and flow rate. Is a display unit for displaying input signal values, device states, etc., 5 is a pen for actually recording, 4 is a servomotor for moving the recording pen 5, 3 is a servo unit for driving the servomotor 4, and 7 is a servo unit. A chart drive motor 6 for driving the recording paper, and a chart drive unit 6 for driving a chart drive motor 7 are used to set the speed at which the recording paper is driven by a chart speed changeover switch 8. Reference numeral 9 denotes a chart driving mechanism that is driven by the chart driving motor 7 and moves the recording paper while bringing the recording paper into contact with the recording pen 5.

Next, the operation will be described. The amplifier 1 amplifies the input signal, the display 2 displays the value of the input signal, and sends the signal amplified by the amplifier 1 to the servo unit 3. The servo unit 3 is controlled according to the output of the amplifier 1 and drives a servo motor 4 that moves a recording pen 5. Further, the chart drive motor 7 is driven by the chart drive unit 6, the recording paper is moved at a constant speed, and recording is performed with the recording pen 5.

[0005]

Since the above-mentioned conventional electronic recorder is constructed as described above, the mechanism is complicated and troubles such as paper jams are liable to occur. Also, recording paper,
There is a problem that there are consumables such as pens and that they need to be replenished periodically.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to make it possible to avoid a trouble such as a paper jam by making paperless, and to make it possible to reduce the size. It is another object of the present invention to provide a recorder capable of recording for a long period of time by eliminating the need for replenishment of consumables.

[0007]

According to a first aspect of the present invention, there is provided an electronic recorder that transfers data between a master IC card and a trend display slave IC card that retains the same data as the master IC card. When the slave IC card is replaced, a spare IC card for substituting the slave IC card is provided.

[0008] An electronic recorder according to a second aspect of the present invention includes a spare IC.
When a plurality of cards are mounted and the recorded contents of the slave IC card become full, the IC card is provided with an IC card switching means for sequentially switching to a new spare IC card for recording.

[0009]

According to the first aspect of the invention, the data of the master IC card is input to the trend display slave IC card.
When the IC card becomes full, data is input to a spare IC card for substituting the slave IC card, and the data is held.

In the second invention, when the recorded contents of the slave IC card become full, data is sequentially input to a new spare IC card.

[0011]

【Example】

Embodiment 1 FIG. Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 11 denotes a master IC card which is permanently installed to record an input signal indicating a process amount at all times;
Reference numeral 12 denotes a slave IC card for displaying a past trend, which stores the same data as the data in the master IC card 11. Reference numeral 13 denotes a spare IC card for replacing the slave IC card 12. Similarly to the conventional embodiment, reference numeral 14 denotes an amplifier for amplifying an input signal supplied to the input terminal 1a, and reference numeral 15 denotes a display for displaying trends such as the value of the input signal and the state of the device. 18 detects that the input data amount of the slave IC card 12 has become full,
IC card switching means for separating the spare IC card 13 from the master IC card 11 and connecting the spare IC card 13 to the master IC card 11, and IC card control means 21 for controlling data transfer between the master IC card 11 and the slave IC card 21.

Next, the operation will be described. Master IC
It has three IC cards: a card 11, a slave IC card 12, and a spare IC card 13, and always monitors the process amount and writes and holds the data in the master IC card 11. Here, the master IC card 11 and the slave I
The functions of the C card 12 can be switched by a switch or the like (not shown). Also, data is periodically transferred between the master IC card 11 and the slave IC card 12 by the IC card control means 21 so that the same data is retained. When a past trend is displayed, data is read from the slave IC card 12 and displayed on a display unit 15 such as a front panel of an electronic recorder. At this time, the master IC card 11 continues to write the data of the input signal, and the data collection is not stopped. Next, when the storage capacity of the slave IC card 12 becomes almost full, the IC card switching means 18 detects this and operates, and the slave IC card 12 operates.
The input signal to the C card 12 is automatically switched so as to be input to the spare IC card 13, and the spare IC card 13 operates as a substitute for the slave IC card 12. At this time, when the storage capacity is full, the master IC card 11 overwrites the oldest previously stored head data and writes endlessly, and data collection is inevitable. Next, the slave IC card 12 whose capacity is full is replaced with a new IC card and collected. The new IC card becomes a spare IC card, and the above operation is sequentially repeated. Further, the IC card which has been processed for the purpose of use is repeatedly used.

The specific effects of the first embodiment are as follows.
There are the following: 1) Since only the IC cards are sequentially replaced,
There are no consumables. 2) Since there is no mechanism, troubles such as paper jam do not occur. 3) Data collection and processing can be easily performed even in a plant in which a controller or the like for collecting information is not installed. 4) If necessary, it is possible to print from the recovered IC card onto the conventional recording paper, and it is also possible to perform batch processing at high speed. 5) Since it can be stored in the same size as a conventional indicator, space for the indicator and the recorder is required, but space is saved because the indicator and the recorder are used.

Embodiment 2 FIG. In the first embodiment, the slave I
Although the case where the C card 12 is collected and replaced with a new IC card has been described, in the second embodiment, as shown in FIG. 2, a large number of spare IC cards 13a, 13b,. This eliminates the need to replace the IC card for a long period of time. In the drawing, the same components as those in FIG. 1 are denoted by the same reference numerals. In FIG. 2, 18a
Is a slave IC card 12, a spare IC card 13a,
IC card switching means for switching input / output connections of 13b,... 13c.

According to the above configuration, based on the operation of the IC card switching means 18a, when the data amount of the slave IC card 12 becomes full, the spare IC card 13b is connected to the master IC card 11, and the spare IC card 13b is connected. When the spare IC card 13b becomes full, the spare IC card 13c is connected to the master IC card 11. This eliminates the need to replace the IC card for a long time.

[0016]

According to the first aspect, the data of the master IC card is input to the slave IC card for trend display, and when the IC card becomes full, the spare IC card for substituting the slave IC card is used. Since the data is input and the data is held, the recording paper can be eliminated, paper jam can be prevented, and the size can be reduced.

According to the second aspect of the present invention, data is sequentially input to a new spare IC card when the contents of the slave IC card become full, so that data can be recorded for a long period of time.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 2 is a block diagram showing a second embodiment of the present invention.

FIG. 3 is a block diagram showing a conventional recorder.

[Explanation of symbols]

1, 14 amplifying unit, 1a input terminal, 2, 15 display unit, 3 servo unit, 4 servo motor, 5 recording pen, 6 chart drive unit, 7 chart drive motor, 8 chart speed changeover switch, 9
Chart drive mechanism, 11 Master IC card, 12
Slave IC card, 13, 13a, 13b, 13c
Spare IC card, 18, 18a IC card switching means,
21 IC card control means.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-292210 (JP, A) JP-A-4-9715 (JP, A) JP-A-5-79863 (JP, A) JP-A-5-79863 91455 (JP, A) JP-A-5-62456 (JP, A) JP-A-4-181441 (JP, A) JP-B1-37778 (JP, B2) JP-B-60-17137 (JP, B2) (58) Field surveyed (Int. Cl. ⁷ , DB name) G01D 9/00 G06F 12/16 310

Claims (2)

(57) [Claims] An electronic recorder used for monitoring and recording a process amount, wherein a master I which constantly records an input signal is provided.
A data transfer between the C card and the master IC card, and a trend display slave IC card holding the same data as the master IC card, and replacing the slave IC card when replacing the slave IC card. An electronic recorder, comprising: a spare IC card. 2. The apparatus according to claim 1, further comprising an IC card switching means for switching to a new spare IC card when the plurality of spare IC cards are mounted and recording contents of the slave IC card become full, and recording the data. Electronic recorder as described.