JP5358602B2 - Recorder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recorder capable of accurately and promptly detecting no presence of recording paper, and malfunction in paper feeding as well. <P>SOLUTION: A recorder 1 is provided with a plurality of microswitches 15 to be closed by contact with recording paper 3, which are arranged on the outer peripheral surface of a rotating body (sprocket drum 6) for moving the recording paper 3, spaced apart from each other in circumferential direction (for example, at 45 degree intervals), where the contact with the recording paper 3 is possible. The microswitches 15 are embedded approximately flush with the surface of the rotating body (sprocket drum 6). Operational states of a predetermined number of microswitches 15 in contact with the recording paper 3 at a time in a contact area of the rotating body (sprocket drum 6) with the recording paper 3 are determined. When the determination that all of the predetermined number of microswitches 15 are in the closed state is not made, a notification is made. <P>COPYRIGHT: (C)2013,JPO&amp;INPIT

Description

  The present invention relates to a recorder used in a power plant or the like, and more particularly, to a recorder that informs of a recording paper feed failure or out of paper.

Industrial recorders are used in various industrial plants to record measurement data such as process temperature, pressure, and flow rate. Normally, measured data is recorded on recording paper called chart paper. ing.
As such a recorder, conventionally, in order to notify that the chart paper is out of paper or that the chart paper is not moving normally, light is directed toward the opening formed on the side edge of the chart paper. A configuration has been proposed in which whether the light receiving means continuously receives light that has passed through the opening or whether the light has not been received continuously for a predetermined time (see Patent Document 1).

JP 2008-185666 A

  However, since chart paper is used which is obtained by alternately folding a band-like paper having openings continuously formed on both side edges at predetermined intervals, the folded chart paper is used for chart feeding. The chart paper may be misaligned and the chart paper opening may not be aligned with the teeth of the sprocket drum of the recorder that can be engaged with the opening.

  Such chart paper feed failure is not necessarily grasped only by determining whether or not the light passing through the opening described above is continuously received for a predetermined time or not (the chart papers are overlapped and sent). Even if the chart paper is misaligned, as long as light reception and non-light reception are alternately repeated, no alarm is issued), and visual confirmation is still necessary.

  The present invention has been made in view of such circumstances, and it is a main object of the present invention to provide a recorder capable of accurately and quickly grasping not only out of recording paper but also paper feeding failure.

  In order to achieve the above object, a recording meter according to the present invention is a recording meter that performs recording while sequentially moving recording paper, and an outer peripheral surface that can contact the recording paper of a rotating body that moves the recording paper In addition, a plurality of microswitches that are closed by contact with the recording paper are arranged at intervals in the circumferential direction and embedded so as to be substantially flush with the surface of the rotating body. Determining means for determining the operating state of the set number of microswitches in contact with the recording paper at the same time, and determining that all of the set number of microswitches are closed by the determining means And notifying means for notifying (when it is determined that less than a set number of microswitches are in a closed state), is provided.

Here, since the number of microswitches located in the contact area with the recording paper may vary due to the rotation of the rotating body, the set number of recording papers that simultaneously contact the recording area of the rotating body with the recording paper. The minimum number of microswitches that will be in contact with the recording paper in the contact area, and if all of the minimum number of microswitches are not determined to be closed (less than the minimum number of microswitches) When it is determined that only a few microswitches are in the closed state), the notification means may notify the user.

  For example, when microswitches are arranged on the outer peripheral surface of the rotating body at intervals of 45 degrees and the contact area of the rotating body with the recording paper is expressed as the central angle of the rotating body, the recording paper is about 180 degrees. Although the number of microswitches located in the contact area may be four or five as the rotating body rotates, the minimum number of microswitches that simultaneously contact the recording paper in the contact area Therefore, when it is determined that there are fewer than four microswitches in the closed state, at least one of the microswitches located in the contact area of the rotating body with the recording paper is in contact with the recording paper. In this case, the information is notified by the notification means.

  The notifying means may be a means for generating an alarm sound or a means for lighting a display means capable of lighting display.

  In the above-described configuration, the determination unit determines that the set number of micro switches are out of paper when it is determined that all of the set number of micro switches are in the open state, and a part of the set number of micro switches is in the open state. If it is determined that there is a paper feed, it may be determined that the paper feed is out of order.

  When the paper is out, there is no recording paper in contact with the peripheral surface of the rotating body. Therefore, all the microswitches arranged on the outer peripheral surface of the rotating body should be in an open state. When it is determined that the part is in the open state, the recording paper is on the outer peripheral surface of the rotating body, but because it is a case where some microswitches are in the open state due to feed failure, Based on the fact that both can be distinguished. For example, when the recording paper is moving normally on the rotating body, the recording paper is in contact with the microswitch in the contact area with the recording paper, but the recording paper is overlapped and sent. In some cases, the overlap is canceled during the movement on the rotating body, and the contact with some micro switches is temporarily lost, and the opening of the recording paper and the teeth of the sprocket drum are aligned. Without recording, if the recording paper is displaced and the contact with the microswitch is impaired, the recording paper is distorted and some microswitches are opened, so by monitoring the signal from the microswitch, It is possible to determine out of paper or paper feed failure.

In addition, the microswitch provided on the outer peripheral surface of the rotating body is provided at intervals in the circumferential direction in the vicinity of both end portions in the axial direction of the rotating body, and the notification means is at least one of the axial directions of the rotating body. On the other hand, when it is determined by the determination means that at least one of the set number of microswitches is in the open state, a notification may be made.
Since the recording paper feed failure may occur only on one side of the recording paper, in order to be able to detect such a situation at an early stage, it may be notified when an abnormality is detected on one side. .

  In the case where the notification means is configured by means for generating an alarm sound or lighting means, the alarm sound or lighting mode may be made different depending on whether the paper is out of paper or the paper feed is out of order.

  As described above, according to the recorder according to the present invention, a plurality of micro switches are arranged at intervals in the circumferential direction on the outer peripheral surface of the rotating body that moves the recording paper, and the surface of the rotating body is substantially the same surface. The operation state of the set number of microswitches that contact with the recording paper is determined in the contact area of the rotating body with the recording paper, and at least one of the set number of microswitches is open Since it is provided with notifying means for notifying when it is determined that the recording paper is out, not only out of the recording paper but also paper feeding failure can be grasped accurately and early.

  In particular, when it is determined that all of the set number of microswitches are open, it is determined that the paper is out of paper, and when it is determined that a part of the set number of microswitches is open. By determining that the paper feeding is out of order, it is possible to identify the cause of the notification.

  At this time, if the notification means is configured by means for generating an alarm sound or lighting means, and the alarm sound or lighting mode is made different depending on whether the paper is out of paper or paper feed failure, the cause of the notification can be easily identified. Become.

  In addition, the microswitches provided on the outer peripheral surface of the rotating body are provided at intervals in the circumferential direction in the vicinity of both ends in the axial direction of the rotating body, and the number set on at least one side in the axial direction of the rotating body If notification is made when it is determined that at least one of the microswitches is in the open state, it is possible to detect paper feeding failure occurring only on one side of the recording paper at an early stage.

1A and 1B are perspective views showing the overall configuration of the measuring instrument, where FIG. 1A shows a state before the recording paper (chart paper) is mounted, and FIG. 1B shows the state where the recording paper (chart paper) is mounted. Show. FIG. 2 is a side sectional view showing an outline of the inside of the measuring instrument. FIG. 3 shows a rotating body (sprocket drum) of a measuring instrument, (a) is a cross-sectional view taken along line AA of (c) showing a state where a micro switch is embedded in the outer peripheral surface of the rotating body, (B) is the figure which looked at the edge part of the rotary body from the axial direction, (c) is the figure which looked at the rotary body from the orthogonal | vertical direction with respect to the axis | shaft. FIG. 4 is a block diagram showing a control circuit of the measuring instrument according to the present invention. FIG. 5 is a flowchart showing an example of a control operation by the control unit of the measuring instrument according to the present invention.

  Embodiments of a measuring instrument according to the present invention will be described below with reference to the accompanying drawings.

  1 to 3, the recorder 1 is provided, for example, on a control operation panel of a power plant, and an electric signal corresponding to a physical quantity that changes with time such as the temperature, pressure, and power generation amount of a power generation facility is input. The physical quantity is recorded on a recording paper made of chart paper. The case 2 is attached to a control operation panel or the like, and the unrecorded recording paper storage unit is provided in the case 2 and stores the unrecorded recording paper 3. 4, a cover member 5 that covers the unrecorded recording paper container 4, a sprocket drum 6 that moves the recording paper 3, and a recording paper guide plate 7 that guides the recording paper 3 from the unrecorded recording paper container 4 to the sprocket drum 6. A recording unit 8 provided on the case 2 and provided with a pen 8 a for recording on the recording paper 3, a recording paper pressing member 9 for pressing the recording paper 3, and a recorded recording paper storage for storing the recorded recording paper 3 Part 10 and in this example The unrecorded recording paper storage unit 4, the cover member 5, the sprocket drum 6, the recording paper guide plate 7, the recording paper pressing member 9, and the recorded recording paper storage unit 10 are modularized and detachably attached to the case 2. It has become so.

  Further, the case 2 is provided with a speaker 11 and a light emitting display unit 12 connected to a control circuit described later.

  The unrecorded recording paper storage unit 4 stores unrecorded strip-shaped recording paper 3 that has not been recorded by the recording unit 8 to be described later in a state where the recording sheet is folded alternately in a mountain and valley.

  The sprocket drum 6 is formed of a cylindrical rotating body, and teeth 6a engageable with openings 3a provided at both side edges of the recording paper at both ends thereof at a predetermined interval (pitch) over the entire circumference. Is formed. The sprocket drum 6 rotates counterclockwise at a predetermined speed in the drawing to guide the recording paper 3 from the unrecorded recording paper storage unit 4 to the recording unit 8 via the recording paper guide plate 7. After being recorded here, it is sent out to the recorded recording paper storage unit 10.

The recording unit 8 includes a pen 8a that records measurement data and a horizontal movement mechanism 8b that moves the pen 8a in the horizontal direction, and supports physical quantities that change with time such as temperature, pressure, and power generation amount of power generation equipment. The horizontal movement mechanism moves the pen in the horizontal direction according to the electric signal. For this reason, since the recording paper moves at a constant speed, the tip of the pen comes into contact with the chart paper, and a time-series graph corresponding to the measurement data is continuously recorded on the recording paper.
In addition, although the example which used the pen as the recording part 8 was shown, you may make it record measurement data on a recording paper by a dot method or a heat sensitive system.

  The chart paper pressing member 9 is provided in the vicinity of the sprocket drum 6, holds the recording paper 3 together with the sprocket drum 6, and guides the recording paper recorded by the recording unit 8 to the recorded recording paper storage unit 10.

  The recorded recording paper storage unit 10 is provided below the sprocket drum 6 and sequentially stores the recording paper 3 on which the measurement data is recorded by the recording unit 8. An opening 11 is formed in a portion of the case 2 facing the recorded recording paper storage unit 10, and the recorded recording paper 3 can be observed and taken out from the outside through this opening. Yes.

  In the recording meter as described above, the outer peripheral surface that can come into contact with the recording paper 3 near both ends of the sprocket drum 6, more specifically, the portion inside the teeth 6 a that engage with the opening 3 a of the recording paper 3. A plurality of microswitches 15 which are closed by contact with the recording paper are arranged at predetermined intervals in the circumferential direction. In this example, eight sprocket drums 6 are provided in the circumferential direction at 45 ° intervals at each of both end portions. Each micro switch 15 is embedded so as to be substantially flush with the surface of the sprocket drum 6. When the recording paper 3 comes into contact with the sprocket drum and the recording paper 3 moves as the drum rotates. The microswitch in the contact area where the recording paper 3 contacts the recording paper 3 of the sprocket drum 6 is closed when the recording paper is in contact with the recording paper 3 under normal conditions. The microswitch 15 in the region 3 (region other than the contact region) 3 is opened.

  As shown in FIG. 4, each micro switch 15 is electrically connected to the control unit 20, and an on / off signal is input to the control unit 20, and the control unit 20 activates notification means based on the on / off signal. I try to let them.

  When the recording paper 3 is out of paper or when the recording paper 3 is out of feed, the notification means is provided by the speaker 11 that notifies by sound output such as a buzzer or by the light emitting display section 12 that is left by light emission. In order to notify the worker that the paper is out of paper or paper feeding failure, the voice output notification means connects the control unit 20 with a voice signal output control unit 21 that generates a voice signal, The audio signal generated by the audio signal output control unit 21 is output from the speaker 11 via the amplifier 22. Further, the notification means by the light emission display connects the LED drive circuit 23 to the control unit 20, and the LED drive circuit 23 causes the out-of-paper display LED 12 a of the light emission display unit 12 or the paper feed malfunction display based on a command from the control unit 20. LED 12b is turned on.

  The control unit 20 includes a central processing unit (CPU), a read only memory (ROM), a random access memory (RAM), an input / output port, etc., and inputs an on / off signal of each micro switch 15 and is given to the ROM or RAM. According to the predetermined program, the state of the recording paper is grasped from the input on / off signal.

FIG. 5 shows an example of the control operation by the control unit 20, which will be described below based on this flowchart.
First, since the area (contact area) with which the recording paper contacts in each recorder is almost determined, the minimum number (N) of microswitches that are in contact with the recording paper in this area is set in advance. That is, the number of microswitches that are always in contact with the recording paper 3 even when the sprocket drum 6 rotates is set (step 50).

  Then, on both sides of the sprocket drum, based on the on / off information input from each microswitch 15, whether all of the N microswitches are off (open state) (step 52), or at least the sprocket drum On one side, it is determined whether or not there are less than N micro switches (a part of the N micro switches are open) (step 54).

  As a result, when it is determined that all of the set N micro switches are OFF (open state) on both sides of the sprocket drum, the recording paper is not in contact with any of the micro switches. Since it is in the state, it is determined that the paper has run out (step 56), a warning sound for running out of paper is emitted from the speaker 11, and the paper running display LED 12a is turned on to notify the operator by both sound signal and light emission ( Step 58).

  If it is determined that all the set N micro switches 15 are not OFF (open state) but some of the micro switches 15 are OFF (open state), as described above, the chart paper Are overlapped or the chart paper is misaligned, it is determined that there is some sort of paper feed failure (step 60), a paper feed failure alarm sound is emitted from the speaker 11, and the paper feed failure indication LED 12b is turned on. Then, the operator is notified by both sound signal and light emission (step 62).

  Further, when it is determined that all the set N micro switches 15 are not OFF (open state) and that the set N micro switches are always ON (closed state), It is considered that there is a normal state in which there is no paper breakage or paper feed failure (step 64), and the processing from step 52 onward is repeated.

  Note that the alarm sound when a paper out is detected and the alarm sound when a paper feed failure is detected may be the same, but a different alarm sound is generated so that the cause of the alarm can be determined. Good.

  Therefore, according to the above configuration, the microswitches 15 are arranged (embedded) at equal intervals in the circumferential direction on the outer peripheral surface of the sprocket drum 6 (rotating body) for moving the recording paper 3, and the recording paper 3 of the sprocket drum 6 is connected. When the minimum number (N) of the microswitches 15 to be simultaneously contacted with the recording paper 3 in the contact area is set, and it is not determined that all of the set number of microswitches are in the closed state ( (When it is determined that at least one is in the open state) by alarm sound or light emission, it is possible to accurately and quickly grasp not only the recording paper 3 out of paper but also paper feeding failure. .

  Further, when it is determined that all of the set number of microswitches 15 are in the open state, it is determined that the paper is out, and when it is determined that a part of the set number of microswitches is in the open state. By determining that the paper feed is out of order (when it is determined that less than the set number of microswitches are in the closed state), the cause of the notification can be easily identified.

  Further, microswitches provided on the outer peripheral surface of the rotating body are provided at intervals in the circumferential direction in the vicinity of both ends in the axial direction of the rotating body, and the number of micro switches set on at least one side in the axial direction of the rotating body is provided. Since not all of the microswitches are determined to be closed (when at least one of the set microswitches is determined to be open), the paper feed malfunction that occurs only on one side is reported. It becomes possible to detect early.

  In the above configuration, the micro switches are arranged at intervals of 45 degrees in the circumferential direction of the sprocket drum, but may be arranged more finely (for example, every 30 degrees) or more roughly. It may be arranged (for example, every 60 degrees).

1 Recorder 3 Recording paper 6 Rotating body (Sprocket drum)
11 Speaker 12 Light emitting display 15 Micro switch

Claims (5)

A recorder that performs recording while sequentially moving recording paper,
A plurality of microswitches that are closed by contact with the recording paper are arranged on the outer peripheral surface of the rotating body that moves the recording paper at intervals in the circumferential direction, and the surface of the rotating body. Buried so that they are almost on the same plane,
A determination means for determining an operating state of a set number of microswitches in which the recording paper simultaneously contacts in the contact area of the rotating body with the recording paper;
Informing means for informing when all of the set number of microswitches are not determined to be closed by the determining means;
The recorder characterized by comprising.   The set number of microswitches that simultaneously contact the recording paper in the contact area of the rotating body with the recording paper is the minimum number of microswitches that are in contact with the recording paper simultaneously in the contact area. The recorder according to claim 1.   The determination means determines that all of the set number of microswitches are in an open state, determines that the paper is out, and determines that a part of the set number of microswitches is in an open state. The recording meter according to claim 1, wherein it is determined that the paper feed is out of order.   The microswitches provided on the outer peripheral surface of the rotating body are provided at intervals in the circumferential direction in the vicinity of both end portions in the axial direction of the rotating body, and the notifying means includes at least one of the axial directions of the rotating body. 4. The measurement according to claim 1, wherein, when the determination means does not determine that all of the set number of microswitches are in a closed state, the measurement means according to claim 1. Total. 4. The recorder according to claim 3, wherein the informing means comprises means for generating an alarm sound or a means for lighting, and the alarm sound or lighting mode varies depending on whether the paper is out of paper or paper feed is bad. .

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