JP4918991B2 - Measurement recording device - Google Patents

Description

  The present invention relates to a measurement recording apparatus, and more particularly to a measurement recording apparatus suitable for recording measurement results accompanying monitoring control of a batch process.

  Recorders that use recording paper can read the measurement results recorded on the recording paper as a wave-shaped trend over time whenever necessary. Widely used.

  The recorder using the recording paper has a pen shape that continuously draws and records changes over time of the measurement signal for each measurement channel with a recording pen provided for each measurement channel, and a plurality of measurement channels. Can be classified into dot shapes for dot recording using a common recording pen. Further, the pen shape can be classified into “with phase synchronization” and “without phase synchronization” depending on whether or not the recording position deviation between the recording pens in the recording paper feeding direction on the recording paper is compensated.

  FIG. 11 is a conceptual block diagram of a multi-pen type recorder. The measurement unit 10 includes an A / D converter (not shown) for each measurement channel, converts an analog input signal into a digital signal at a predetermined measurement cycle (for example, 125 ms), and stores it in the RAM 20 as measurement data. . In addition to the measurement data, the RAM 20 stores variable parameters such as measurement conditions.

  The recording pen drive system 30 is used to draw and record the measurement data for each measurement channel stored in the RAM 20 at a predetermined recording cycle. For each measurement channel, the servo unit 31, servo motor 32, and recording pen 33 are recorded. Is provided.

  The recording paper drive system 40 includes a recording paper control unit 41, a recording paper motor 42, and a recording paper 43. The recording paper 43 is fed out at a predetermined speed set by the operator by a recording paper motor 42 whose rotation speed is controlled by the recording paper control unit 41.

  The setting operation unit 50 is used to set measurement conditions such as measurement ranges, alarm setting values, and recording paper feed speeds for each measurement channel. A switch, a rotary encoder, and the like are provided as an operation panel. The operator operates the setting operation unit 50 while referring to the display information on the display unit 60.

  The ROM 70 stores programs and fixed parameters for controlling the operation of the entire apparatus.

  As the external memory 80, a removable memory such as a floppy (registered trademark) disk or an IC card is used.

  The communication interface 90 is used to exchange control signals and measurement data with an external device.

  The CPU 100 performs various arithmetic processes such as a moving average calculation on the measurement data and controls the entire apparatus.

  The recording position compensation unit 110 prevents the recording result on the recording paper 43 from being affected by the recording position shift between the recording pens 33 in the recording paper feeding direction, that is, recording by the recording pens 33 on the recording paper 43. The timing for inputting the measurement data stored in the RAM 20 for each recording pen drive system 30 is controlled while reflecting the feeding speed of the recording paper so that the result coincides on the time scale line of the recording paper 43 to compensate the recording position. .

  Thereby, when reading the recording result on the recording paper 43, it is not necessary to consider the recording position shift between the recording pens 33 existing along the feeding direction of the recording paper 43, and the analysis becomes easy. In the state where the recording position compensation unit 110 is not operated, the recording position deviation between the recording pens 33 existing along the feeding direction of the recording paper 43 must be taken into consideration when reading the recording result on the recording paper 43. Don't be. Depending on the presence / absence of the recording position compensation unit 110 and the presence / absence of the function operation, it can be classified into “with phase synchronization” and “without phase synchronization”.

  FIG. 12 is a conceptual block diagram of the dot recorder, and the same reference numerals are given to the parts common to FIG. In the measurement unit 10, an A / D converter (not shown) converts an analog input signal into a digital signal at a predetermined measurement cycle (for example, 2.5 seconds), and the analog input signal of each measurement channel is sequentially switched. Entered. The output data of the A / D converter is recorded at every recording cycle (for example, 10 seconds) set by the user as measurement data. In this case, three pieces of measurement data are thinned out.

  The recording pen drive system 120 is configured to strike an ink ribbon on recording paper with a recording pen. That is, the ribbon control unit 121 and the ribbon drive mechanism 122 change the recording color by swinging the ribbon dyed with ink so that the color bands are different in the width direction along the recording paper feeding direction. Ribbon feed is performed in a direction perpendicular to the paper feed direction.

  The recording pen control unit 123 and the recording pen drive mechanism 124 are assigned to each measurement channel of the ink ribbon at a position corresponding to the measurement data value of each measurement channel while reciprocating the recording pen in the width direction of the recording paper. The recording pen is selectively driven so as to strike a predetermined color band on the recording paper. The recording cycle can be arbitrarily set by the operator as described above, and is set in association with the recording paper feed speed.

JP 02-159514 A JP-A-62-91814

  Patent Document 1 discloses an invention that is a multi-pen type recorder in which a phase synchronization reference pen can be arbitrarily set.

  Japanese Patent Application Laid-Open No. 2004-228561 is a dot-type recorder that switches recording colors by swinging ribbons dyed with ink so that color bands are different in the width direction along the recording paper feeding direction. The ribbon is fed in the direction perpendicular to the feed direction of the ink, and the recording pen is reciprocated in the width direction of the recording paper, and assigned to each measurement channel of the ink ribbon at a position corresponding to the measurement data value of each measurement channel. An invention is disclosed in which a recording pen is selectively driven so as to strike a predetermined color band on a recording sheet.

  By the way, one of the plant control forms is a batch process used in a food / chemical / pharmaceutical plant. In the batch process, a recipe for making a target product and an apparatus for operating the recipe are assigned based on a procedure manual created for each product. The operation state of a plurality of plant facilities such as a reaction kettle and a stirrer is monitored and controlled so that a predetermined amount of raw material is charged and heating and reaction are performed based on a predetermined sequence.

  In a batch plant for high-mix low-volume production, process rearrangement and type switching are frequently performed, and batch sequences for each type are performed sequentially through a large number of plant facilities. Even in such a batch process monitoring control, a recorder is used as a means for recording measurement data in each part of the plant equipment.

The following functions are desired as a recorder that records the measurement results associated with the batch process monitoring control.
1) At the start of recording (process start) Comments such as product name, lot number, start date time, etc. 2) At the end of recording (process end) Worker comments, measurement data, end date time, etc. 3) Batch Distinguish by process chart feed to leave a gap between this record and the next record

  However, conventional recorders are designed mainly to continuously record various monitoring data in continuous processes such as power generation, gas, oil refining, and water and sewage treatment that are continuously operated throughout the year with almost no pauses. Therefore, it is difficult to perform specific print recording associated with the monitoring control of these batch processes.

  The present invention pays attention to such points, and an object of the present invention is to realize a measurement recording apparatus suitable for recording measurement results accompanying monitoring control of a batch process.

The invention according to claim 1, which achieves such a problem,
In a measurement recording device that records a trend of a batch process measurement result in a wave shape over time, and prints and records information on the attribute of the batch process at least before and after the trend recording,
Whether or not chart feed is used to leave an interval from the previous recording before starting printing, and whether or not chart feed is used to make an interval between the chart feed amount for chart feeding and the next recording after finishing printing Printing data storage means for storing the chart feed amount in the case of chart feeding as printing data,
Is provided .

The invention according to claim 2 is the measurement recording apparatus according to claim 1,
The recording means is a recording pen that performs line drawing recording.

The invention according to claim 3 is the measurement recording apparatus according to claim 2,
Line drawing recording represents the maximum value and the minimum value within the recording period.

The invention according to claim 4 is the measurement recording apparatus according to any one of claims 1 to 3,
The recording means is a plurality of recording pens that perform line drawing recording for each of a plurality of measurement systems.

The invention according to claim 5 is the measurement recording apparatus according to claim 4,
The recording unit includes a recording position compensation unit that compensates for a recording position shift between the recording pens in the recording sheet feeding direction on the recording sheet.

The invention according to claim 6 is the measurement recording apparatus according to claim 1,
The recording means is a recording pen that performs dot recording.

A seventh aspect of the present invention is the measurement recording apparatus according to any one of the first to sixth aspects, wherein each recording is performed on a chart.

The invention according to an eighth aspect is the measurement recording apparatus according to any one of the first to sixth aspects, wherein each recording is performed on a two-dimensional display screen.

A ninth aspect of the present invention is the measurement recording apparatus according to any one of the first to eighth aspects, wherein the start / stop of recording is performed from outside via a network.

  As a result, a measurement recording apparatus suitable for recording various measurement results associated with the monitoring control of the batch process can be realized.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a conceptual block diagram of a multi-pen type recorder showing an embodiment of the present invention. Parts common to those in FIG. In FIG. 1, in addition to the configuration of FIG. 11, a plotter pen unit 130 for printing character symbols and an external contact signal input unit 140 are provided.

  The plotter pen unit 130 should print the plotter pen itself in the X-axis direction along the recording paper feed direction, the Y-axis direction orthogonal to the recording paper feed direction, and the Z-axis direction perpendicular to the recording paper. Character symbols are printed by reciprocating a predetermined amount according to the character symbols. The X-axis control unit 131, the X-axis drive mechanism 132, the Y-axis control unit 133, the Y-axis drive mechanism 134, Z An axis control unit 135, a Z-axis drive mechanism 136, and the like are included.

  For example, a contact signal that is turned on / off in conjunction with an operation of a control target (not shown) is input to the external contact signal input unit 140.

  2 and 3 are examples of recording results of the apparatus of FIG. 1, and examples of measuring the temperature inside the baking oven while performing phase synchronization to compensate for the recording position deviation between the recording pens in the recording paper feed direction on the recording paper. Is shown. In FIG. 2, trend recording is performed while the recording pen is moved up and down, and in FIG. 3, trend recording is performed with the recording pen kept down. The difference between FIG. 2 and FIG. 3 is whether or not the recording result by the recording pen is continuous before and after the trend recording. The following will be described based on the recording result of FIG.

  In the recording result of FIG. 2, Ta indicates a chart feed period at the start of the batch process, and Tb indicates a start print recording period. Tc is a trend recording period during execution of the batch process. Td is a data discharge period for phase synchronization processing. Even if the actual measurement operation is finished, the recording position deviation between the reference recording pen and the other recording pens existing along the recording paper feeding direction is electrically The period required for signal processing for compensating and matching is shown. Te represents the end print recording period, and Tf represents the chart feed period at the end of the batch process.

The start print information recorded in the start print recording period Tb is stored in the RAM 20 with a data structure as shown in FIG. 4, for example. The start print information includes various attribute information related to the start of the batch process, and the plotter pen is driven and controlled based on such start print information, for example, the following print recording is performed.
1) Start comment: Arbitrary character string can be set on one or more lines
(Example: French bread start)
2) Batch number: Arbitrary character string can be set on one or more lines
(Example: ABC51)
3) Lot number: (Example: 000052)
4) Start date time: (Example: 2005/12/08 14:25:45)
5) Recording paper feed speed: (Example: 100 mm / h)

  In the trend recording period Tc, when the temperature reaches a predetermined set temperature suitable for baking, for example, French bread, the time when the temperature reaches the predetermined temperature is set as the time when preheating ends and baking starts, for example, “14:31:46” Record as a message, such as “Start”. Thereafter, the furnace temperature is controlled to maintain the set temperature for a predetermined time required for baking French bread. Then, when the predetermined time has elapsed, the time is set as the time when the baking ends, and is printed and recorded as a message, for example, “15:04:23 FULL”.

The end print information recorded in the end print recording period Te is stored in the RAM 20 with a data structure as shown in FIG. 5, for example. The end print information includes various attribute information relating to the end of the batch process. Based on such end print information, the plotter pen is driven and controlled, for example, as follows.
1) End comment: Arbitrary character string can be set on one or more lines
(Example: French bread Kansei)
2) Batch number: Arbitrary character string can be set on one or more lines
(Example: ABC51)
3) Lot number: (Example: 000052)
4) End date time: (Example: 2005/12/08 15:10:10)
5) Recording paper feed speed: (Example: 100 mm / h)
6) Measurement / calculation results: (Example: Panyaki Zikan 00:32:37)

  These start print information, start date and time, recording paper feed speed, whether to feed charts to make an interval from the previous record before start printing, chart feed amount when chart feed, end date and time, end Whether to feed the chart in order to leave an interval from the next recording after printing, whether to automatically update the chart feed amount and lot number (lot number + 1) when chart feeding, phase synchronization with the pen model Whether to stop trend recording after recording all phase-synchronized data when in use, whether to print measurement / computation results, print channel for printing, data conditions to print, and other recorders The information that the user has is arbitrarily set by the user through the panel, communication with the outside, or media, as shown in FIG. It is stored as character data in the print data storage area of the RAM 20.

  When a recording start instruction is received by an external contact (remote input), panel, or external communication, when chart feed is performed, the recording paper is fed for the set recording paper feed length, and start printing is performed according to the set contents. . If all printing is set to OFF and there is no content to print, no printing is performed.

  When start printing ends, trend recording of measurement and calculation results starts. It is also possible to use a method of starting start printing and trend recording of measurement / calculation results simultaneously with the start of recording.

  During the trend recording operation, a message is printed based on an instruction from an external contact (remote input), panel, communication, internal switch or the like.

  When recording stop is received from an external contact (remote input), panel, or communication while using the phase synchronization of the pen model, if the trend recording is set to stop after recording all phase synchronization data After all the phase-synchronized data is trend-recorded, end printing (end comment etc.) is performed according to the set contents. If there is no content to be printed with all printing OFF, no printing is performed.

  When chart feed is performed after completion printing, recording paper is fed by the set recording paper feed length.

FIG. 7 is a flowchart for explaining the flow of these series of operations.
When recording start information is input via an external contact (remote input), a panel, or external communication with the power turned on, the recording start / stop information storage area in the RAM 20 is updated and stored. Then, the recording start / stop information stored in the RAM 20 is confirmed every predetermined period (for example, sampling period 125 ms of the A / D converter provided in the measuring unit 10), and recording is detected when recording stop → start is detected. The operation is started (step SP1).

  The presence / absence of chart feed is determined (step SP2), and if there is, control information for feeding the recording paper 43 by the set chart feed amount is input to the recording paper control unit 41. The recording paper control unit 41 drives the recording paper motor 42 in accordance with the control information and causes the recording paper 43 to travel for the set chart feed amount (Ta section in FIGS. 2 and 3) (step SP3).

  Next, the presence / absence of the start print setting is confirmed (step SP4). If the start print is set, the start print information is read from the RAM 20 (step SP5), and if the start print is not set, the start print process is skipped.

  In the start printing process, if printing of the recording paper feed speed is ON, the recording paper feed speed stored in the RAM 20 is read. If printing of the start date / time is ON, the current date time is read from the clock held by the recorder. Get. These date time and recording paper feed speed are stored in the print data storage area of the RAM 20 together with the character string (ASCII code) and character position information. If the lot number printing is ON, the lot number information stored in the RAM 20 is read. If the batch number printing is ON, the batch number information stored in the RAM 20 is read. These batch number and lot number are also stored in the print data storage area of the RAM 20 together with the character string (ASCII code) and character position information. If printing of the start comment is ON, the start comment is stored in the print data storage area of the RAM 20 together with the character string (ASCII code) and character position information.

  If at least one character string is expanded in the print data storage area of the RAM 20, the character string (ASCII code) and the character position information of the first line are expanded in the print image buffer area of the RAM 20.

When the measurement recording device is a dot model, the contents of the print image buffer area of the RAM 20 are read as needed, and the following 1) to 4) control is executed based on the contents to print one line of dots on the recording paper. Is done.
1) Movement of recording pen by recording pen drive mechanism 2) Ribbon shift (print color selection) by ribbon drive mechanism control of ribbon control unit
3) Dot recording by recording pen control unit 4) Recording paper feed by recording paper motor control of recording paper control unit

When the measurement recording apparatus is the pen model shown in FIG. 1, the contents of the print image buffer area of the RAM 20 are read as needed, and the following control 1) to 3) are executed based on the contents, and one line is printed on the recording paper. The pen writing is printed.
1) When control information is sent to the X-axis control unit 131, the X-axis control unit 131 operates the X-axis drive mechanism 132 according to the information, and when the control information is sent to the Y-axis control unit 133, the Y-axis control unit 133 receives the information. 2) When the control information is sent to the Z-axis control unit 135, the Z-axis control unit 135 operates the Z-axis drive mechanism 136 according to the information to raise or lower the plotter pen 3) When the control information is sent to the recording paper control unit 41, the recording paper control unit 41 drives the recording paper motor 42 according to the information and sends the recording paper 43 (feed (interval) between lines).

  As described above, all the start prints including the start date time, the recording paper feed speed, the batch number, the lot number, the start comment, etc. are printed on the recording paper 43 (Tb section in FIGS. 2 and 3).

  When the start printing is completed, recording paper feed and trend recording (Tc section in FIGS. 2 and 3) are performed (step SP6).

  When the recording start → stop is detected, the end print information is read from the RAM 20, but until the stop is detected, recording paper feed and trend recording (Td section in FIGS. 2 and 3) are performed (step SP7).

  When phase synchronization is used in the pen model shown in FIG. 1, it is determined whether or not all phase synchronization data is recorded (step SP8).

  If all recording is set, the trend recording data not recorded in the phase synchronization trend recording data stored in the RAM 20 is recorded (step SP9).

  When the recording of all the phase-synchronized trend recording data is completed (Td interval in FIGS. 2 and 3), the recording paper feed and the trend recording are stopped (step SP10).

  Next, the presence / absence of end print setting is confirmed (step SP11). If end printing is set, end printing information is read from the RAM 20 (step SP12). If end printing is not set, the end printing process is skipped.

  In the end printing process, if printing of the recording paper feed speed is ON, the recording paper feeding speed stored in the RAM 20 is read. If printing of the end date time is ON, the current date time is read from the clock held by the recorder. Get. These date time and recording paper feed speed are stored in the print data storage area of the RAM 20 together with the character string (ASCII code) and character position information. If the lot number printing is ON, the lot number information stored in the RAM 20 is read. If the batch number printing is ON, the batch number information stored in the RAM 20 is read. These batch number and lot number are also stored in the print data storage area of the RAM 20 together with the character string (ASCII code) and character position information. If printing of the end comment is ON, the end comment is stored in the print data storage area of the RAM 20 together with the character string (ASCII code) and character position information.

  All the end prints are printed on the recording paper by the same method as the start print (Te section in FIGS. 2 and 3).

  It is determined whether or not the lot number is automatically updated (step SP13). If automatic update is set, the lot number is updated by adding +1 to the current lot number (step SP14).

  Thereafter, the presence / absence of chart feed is determined again (step SP15), and if so, control information for feeding the recording paper 43 by the set chart feed amount is input to the recording paper control unit 41. The recording paper control unit 41 drives the recording paper motor 42 according to the control information, and causes the recording paper 43 to travel for the set chart feed amount (Tf section in FIGS. 2 and 3) (step SP16).

  Then, returning to step SP1, a series of operations is repeated.

  By adopting such a configuration, information regarding the attribute of the batch process is printed and recorded at least before and after the trend recording of the batch process, which is suitable for recording various measurement results associated with the monitoring control of the batch process. A measurement recording device can be realized.

  Further, by performing a predetermined amount of chart feed at least one of the start and end of the batch process, it is possible to know that the batch process has changed from the recording result.

  In the above embodiment, the start print information and the end print information are stored in the respective storage areas. However, a plurality of sets can be set and stored as shown in FIGS. As shown, for example, one start print information and end print information may be selected from a plurality of external contacts.

  For example, in the example of the start print information in FIGS. 2 and 3, “French bread start” is printed. However, when manufacturing a croissant, the start print information set for the croissant is selected by an external contact and used for the croissant. The start print information of “croissant start”, batch number / lot number for croissant, etc. may be printed.

  In addition, in the end print information examples of FIGS. 2 and 3, “French Pan Kansei” is printed. However, the end print information set for failure when the process control or the like cannot be controlled well is displayed by an external contact. By selecting, it may be possible to print defective end print information such as “printing of“ pan free ”and not updating lot number”.

  In the above-described embodiment, an example of the synchronous process in which the start print information is printed when the recording start is received and the end print information is printed when the recording stop is received is shown. In addition, the start print information may be printed if a start print request is received from an external contact or the like, and similarly, the end information may be printed if a finish print request is received from an external contact or the like.

  Each recording described in the above embodiment may be performed on a two-dimensional display screen of a paperless recorder that uses a two-dimensional display instead of recording paper.

  In addition, the start print and end print requests may be automatically printed at a predetermined time using a timer function.

  Furthermore, although the example of bread baking was demonstrated in the said Example, it is suitable for the recording of the various batch processes used at a foodstuff, a chemical, a chemical plant etc.

It is a conceptual block diagram of the present invention. It is an example figure of a recording result of the apparatus of FIG. It is another example of a recording result of the apparatus of FIG. It is an example of the data structure of start printing information. It is an example of the data structure of end print information. It is an example of a data structure for printing. It is a flowchart explaining the flow of a series of operation | movement of FIG. It is an example of a structure of a start printing information set. It is a structural example of an end print information set. It is an example of information selection by an external contact. It is a block diagram which shows the example of the conventional pen-shaped structure. It is a block diagram which shows the example of the conventional dot form structure.

Explanation of symbols

20 RAM
41 Recording paper control unit 42 Recording paper motor 43 Recording paper 130 Plotter pen unit 131 X-axis control unit 132 X-axis drive mechanism 133 Y-axis control unit 134 Y-axis drive mechanism 135 Z-axis control unit 136 Z-axis drive mechanism 140 External contact signal Input section

Claims (9)

In a measurement recording device that records a trend of a batch process measurement result in a wave shape over time, and prints and records information on the attribute of the batch process at least before and after the trend recording,
Whether or not chart feed is used to leave an interval from the previous recording before starting printing, and whether or not chart feed is used to make an interval between the chart feed amount for chart feeding and the next recording after finishing printing Printing data storage means for storing the chart feed amount in the case of chart feeding as printing data,
Measuring a recording apparatus, wherein a provided.   The measurement recording apparatus according to claim 1, wherein the recording means is a recording pen that performs line drawing recording.   The measurement recording apparatus according to claim 2, wherein the line drawing recording represents a maximum value and a minimum value within a recording cycle.   4. The measurement recording apparatus according to claim 1, wherein the recording means is a plurality of recording pens that perform line drawing recording for each of a plurality of measurement systems.   5. The measurement recording apparatus according to claim 4, wherein the recording means includes a recording position compensation unit that compensates for a recording position shift between the recording pens in the recording paper feed direction on the recording paper.   The measurement recording apparatus according to claim 1, wherein the recording unit is a recording pen that performs dot recording. Each recording is performed on a chart, The measurement recording apparatus in any one of Claims 1-6 characterized by the above-mentioned. 7. A measurement recording apparatus according to claim 1, wherein each recording is performed on a two-dimensional display screen. 9. The measurement recording apparatus according to claim 1 , wherein start / stop of recording is performed from outside via a network.

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