JPS63182451A - Control display apparatus of loom - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a loom in which each part of the loom is controlled by a plurality of microcomputers. This relates to a control display device for stopping the system and centrally displaying abnormal locations.

BACKGROUND ART Conventionally, as a method for detecting an abnormality in a microcomputer that controls each part of a loom, for example, Japanese Patent Laid-Open No. 57-1762
The methods disclosed in No. 37 and Japanese Unexamined Patent Publication No. 61-648 are known.

The method disclosed in JP-A No. 57-176237 restarts the microcomputer when an abnormality is detected, but in this case, it is difficult to determine where the abnormality is in the microcomputer itself or other controlled parts. In addition, the method disclosed in Japanese Patent Application Laid-open No. 61-648 uses data communication between each microcomputer in order to mutually monitor multiple microcomputers installed to control a loom. By connecting each microcomputer with a line and sending and receiving monitoring signals to each other, the response signal from the other microcomputer to this monitoring signal can be checked to monitor the normal operation of the other microcomputer. An abnormal state is detected when there is no response signal. However, with this method, transmission and reception must be repeated between one microcomputer and the other at all times during weaving.

In particular, the speed of jet rooms continues to increase, and if an abnormality occurs, it takes a lot of time to repair it, so it is necessary to detect runaway microcomputers as early as possible. The transmission and reception of monitoring signals must be repeated in short cycles, and the high-speed monitoring function is performed in addition to the original control function, placing a very heavy burden on each microcomputer.

Furthermore, according to this monitoring method, when an abnormality occurs in each part of the loom, the abnormality sensor installed in each part detects the abnormality, but it is not immediately clear which abnormality sensor is operating, and the loom The problem was that the operating rate of the loom decreased because the cause of the loom's stoppage could not be dealt with immediately.

Purpose of the Invention Therefore, the purpose of the present invention is to detect malfunctions in each part of a loom and the plurality of microcomputers that control them, to stop the operation of the loom, and to centrally display malfunctioning parts. An object of the present invention is to provide an abnormality detection display device.

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a loom equipped with a plurality of microcomputers to control each part of the loom, and a function of displaying an abnormal location on one microcomputer at the same time. This display microcomputer and each other microcomputer are bidirectionally connected to each other by a data communication line, and each microcomputer is individually connected to the controller of each part of the loom. Each of the above microcomputers independently controls the corresponding controller, and at this time,
The data communication line is used exclusively for exchanging control data. In addition, each microcomputer detects abnormalities in each controller and the microcomputer itself, and
Stop the operation of the loom. On the other hand, after the loom has stopped, the display microcomputer searches for which part of the controller and the microcomputer itself has detected an abnormality from each microcomputer via the communication line, and uses its display function to stop ll1a. Concentrately display abnormalities in one place while identifying the cause.

Therefore, each microcomputer is in a state where it relies heavily on its original control function. Moreover, since the abnormality is displayed by one dedicated microcomputer after the loom is stopped, the abnormality is searched for and promptly executed, so that subsequent measures can be taken quickly and appropriately.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a block diagram schematically showing the entire control and display device for a loom according to the present invention, and FIG. 2 is a diagram showing an operation control system for the loom.

First, in FIG. 1, a control display device 1 for a loom includes one display control device W, 2 and a plurality of control devices 21, 22, .
It has 2n. These are connected to each other by a data communication line 31, and both consist of a microcomputer for control, and each includes a CPU 3.13 and a memory 4.1.
4.

The CPU 3.13 and memory 4.14 are interconnected and further connected to an interface 5.15. The CPU 3.13 also detects a power outage detector 6.13.
16 and self-monitoring self-monitoring glue-trigger-pull monostable multivibrator 7.17, and the output end of retriggerable monostable multivibrator 7.17 is connected to abnormal output relay 8.16 via OR gate 11 and lla, respectively. 18a and the reset input terminal of CPU 3.13. In addition, or game) 11. The other input of lla is 0 or more, in which a signal output from the CPU 3.13 in the event of an abnormality is input, and the same is true for the other control devices 22, . . . 2n.

The CPU 3.13 is programmed to trigger the retriggerable monostable multivib break 7.17 at regular intervals. If this program runs normally, the retriggerable monostable multi-bi break 7
．． 17 sends the abnormal signal to the reset input terminal of the CPU 3.13 and the OR gate 11. Although not output to lla, when one of the microcomputers is unable to execute the program normally due to a malfunction due to noise or the like, the corresponding retriggerable monostable multi-by-break 7.
17 is no longer triggered from that point on, so it outputs an abnormal signal. Therefore, the CPU 3.13 is reset in preparation for re-operation, and the corresponding relay 8.1
8a is turned on to stop the loom. Also,
The same applies to the control devices 22...2n, and if the internal control microcomputer malfunctions, the internal retriggerable monostable multivibrator (not shown) outputs an abnormal signal, and the CPU is reset.
The corresponding relays 18b...18n are turned on.

Furthermore, the interface 5 of the display control device 2 is connected to a data setting device 9 and a display device 10. This data setting device 9 stores control data necessary for controlling the loom in the memory 4 of the display control device 2, such as the rotation speed of the loom's drive motor, the target tension value for electric feed-off, the weft thread density, etc. Control data such as the nozzle injection timing and pressure, the stop timing and feeler timing of the loom control device, and the selection pattern of the weft yarn selection device are set and stored in advance. Further, when an abnormality is detected, the display device 1O lights up an indicator light corresponding to the abnormality, or directly displays the abnormality in text using a liquid crystal display device or the like.

The interface 15 of the control device 21 also includes a loom encoder 19 that detects the rotation angle of the loom as a controller;
A plurality of solenoid valves 20 for horizontal insertion and their abnormality detection sensors 23a are connected.

The other control device 22 is connected to the electric feed-out motor 24 and its tension abnormality detection sensor 23b as a controller in order to control the warp tension.
n is used for other controls and is connected to a plurality of abnormality detection sensors 23n. Each of the above abnormality detection sensors 2
3a, 23b...23n detects an abnormality to be detected, each control device 21, 22...2n based on the abnormality signal
Relays tea, ta, b...18n provided inside are turned on. In addition, the relay contact 25b of the operation relay 25
A signal line 32 is connected to the display control device 2 and a plurality of control devices 21, 22, . . . 2n via the signal line 32.

Next, in FIG. 2, the drive motor 26 of the loom is connected to the three-phase power supply 12 via the breaker 12a and the relay contact 25a of the operation relay 25, and a part of it is connected to the three-phase power supply 12 via the transformer 27. It is also connected to circuit 28. This control circuit 28 includes a run switch 29, a stop switch 30, and relays 8.18a, 18b and 18n.
Normally closed relay contacts 8A, 18aA, 18b linked to
A...18nA and a driving relay 25 are connected in series, and a self-holding relay contact 25 that is connected to the driving relay 25 in parallel with the driving switch 29.
c is connected.

When the operation switch 29 is turned on, the operation relay 25 is turned on, and in conjunction with this, the relay contact 25c is turned on to perform self-holding, and the relay contact 25a is turned on to energize the drive motor 26, which to the display control device 2 via the signal line 32 by operating the loom and turning on the relay contact 25b! a Momentum double signal is input. Stop switch 30 is turned off or any relay 8.18a, 18b...
18n turns on, relay contact 8A,
When the signals 18aA, 18bA, .

Operation of the Embodiment Next, the abnormality detection and display operation in the embodiment of the present invention configured as described above will be explained with reference to the flowcharts shown in FIGS. 3 to 11.

First, FIG. 3 shows a flowchart of a control program in the display control device 2. As shown in FIG. The control program starts when the power is turned on or a false start occurs after the program runs out of control, and first it is determined whether the power failure flag of the power failure detector 6 is set. If the power outage flag is set, after resetting the power outage flag, the CPU 3 determines whether the loom is stopped based on the on/off state of the operation relay 25, and determines whether the power outage flag is v? If machine a is stopped, control device 2
A status signal transmission request command is sequentially transmitted every 1.22...2n, and it is determined whether an abnormality has occurred in every control device 21, 22...2n.

If there is an abnormality, the CPU 3 displays the abnormal location of the abnormal control device 21, 22, . . . 2n on the display 10 based on the status signal. Subsequently, the CPU 3 again determines whether the loom is stopped and repeats the above-described operation. In addition, in the process of determining whether the power outage flag is set, if the power outage flag is not set,
The program determines that there is an abnormality in CPU3 and sends ORGATE 1.
By turning on the signal to 1 and turning on the relay 8, the relay contact 8A is opened and the driving motor 26 of the loom is turned on.
In addition to cutting off the power to the loom and stopping the operation of the loom,
An abnormality in the CPU 3 is displayed on the display 10. after that,
The process proceeds to the process of determining whether or not the loom is stopped, and the above-described operations are executed.

Next, FIG. 4 shows a flowchart of the display control device 2 when control data is set by the data setter 9. The CPU 3 executes the data setting program in response to an interrupt from the data setting W"tr9. When various control data are input, the set control data is
- is stored in the memory 4 of the display control device 2, and this control data is stored in each predetermined control device 21, 22...
2n and stored in the memory 14, respectively.

FIG. 5 shows a flowchart of the CPU 3 at the time of a power failure interruption. When the power outage detector 6 detects a power outage, the power outage program sets a power outage flag. Note that even when the power is turned off, the power outage detector 6 regards this as a power outage and sets a power outage flag.

FIG. 6 shows a flowchart for self-diagnosis of the CPU 3. With this interrupt program, the CPU 3 generates a trigger signal by interrupting at fixed time intervals, and thereby periodically triggers the retriggerable monostable multipipe rake 7 to perform self-diagnosis. When an abnormality occurs in the program, the retriggerable monostable multivibrator 7 is not triggered, so an abnormality signal is output, the CPU 3 is reset, and at the same time the relay 8 is turned on to stop the loom.

Next, FIG. 7 shows a flowchart of the control program of the control device 21. The control program starts when the power is turned on or restarted, and after first turning off all the electromagnetic valves 20, it is determined whether the power failure flag of the power failure detector 16 is set. If the power outage flag is not set, it is determined that the CPU 13 is abnormal and the CPU
13, and then turns on the signal to the OR gate 11 to turn on the relay 18a, thereby opening the relay contact 18aA, cutting off the power to the loom's drive motor 26, and turning on the loom. The operation of the loom will be stopped and further operation of the loom will be prohibited. Further, when the power outage flag is set, after resetting it, a status indicating that there is no abnormality is set in the CPU 13 in preparation for a later operation command.

The loom is operated from this state. When the abnormality detection sensor 23a detects an abnormality during driving, CPtJ1
3, after turning off all the solenoid valves 20, the relay 18
By turning on a, the operation of the loom is stopped and further operation of the loom is prohibited. If there is no abnormality, it is determined whether the loom is in operation, and if the loom is in operation, each solenoid valve 20 is activated in accordance with the control data stored in the memory 14 based on the angle signal from the loom encoder 19. Control on/off and repeat the above operation. Also, when the loom is stopped, turn off all solenoid valves.

FIG. 8 shows a flowchart for self-diagnosis of the CPU 13 of the control device 21. The program outputs a -trigger signal to the retriggerable monostable multi-pipe rake 17 in the same way as the CPU 3 by means of an interrupt at regular time intervals to perform self-diagnosis.

FIG. 9 shows a flowchart of the control device 21 when any one of the abnormality detection sensors 23a detects an abnormality. When any abnormality detection sensor 23a detects an abnormality, a search is made to determine which abnormality detection sensor 23a has detected the abnormality, and a status indicating that the specific one has detected the abnormality is set.

FIG. 10 shows a flowchart of the control device 21 in the event of a power outage, and when the power outage detector 16 detects a power outage, a power outage flag is set.

Furthermore, FIG. 11 shows a flowchart of the control device 21 regarding transmission and reception with the display control device 2. When a signal is received from the display control device 2, it is first determined whether it is a status signal request command, and the status signal is If it is a request command, the status data at that time is sent to the display control device 2, and if it is not a status signal request command, the status data at that time is sent to the display control device 2.
That is, if it is a data setting command, it is stored in the memory 14 as control data to be set, that is, angle data for on/off of each electromagnetic valve 20.

The above operation program is almost the same for the other control devices 22...2n.

Modifications of the Invention In the above embodiments, the control device for setting control data has a function of displaying abnormal locations, but the present invention is not limited to this, and other control devices may be configured as the display control device.

Effects of the Invention As described above, according to the present invention, the following unique effects can be obtained.

First, in a loom equipped with multiple microcomputers to control each part of the loom, one of the microcomputers is used as a display control device to display abnormalities, and this and other multiple microcomputers By connecting the control devices to each other via data communication lines and further connecting the controllers of each part of the loom to each control device, each control device can independently detect abnormalities in each controller and the microcomputer itself. In addition to stopping the operation of the loom, the display control device searches through the communication line from each control device after the loom has stopped to find out which abnormality has been detected in the controller, microcontroller, or computer, and displays the information. Since the cause of the loom stoppage is displayed centrally, abnormalities in each part of the loom can be centrally displayed on one display.
Therefore, the abnormality of the loom can be immediately identified just by looking at it, and the cause of the loom stopping can be quickly dealt with, thereby improving the operating rate of the loom.

In addition, each control device only controls the loom while the loom is in operation, and communication between each control device regarding abnormality detection is performed while the loom is stopped. Therefore, communication regarding abnormality detection is transmitted to each microcomputer. It does not become a burden, and since each microcomputer independently detects an abnormality and stops the loom, the time from the occurrence of an abnormality to the stoppage of the loom is extremely short, so that , can be dealt with early. Furthermore, since power outages are detected, it is possible to determine and display whether the prohibition of loom operation is due to a power outage or an abnormality in the microcomputer or the like.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the overall configuration of the display control device for a loom according to the present invention, FIG. 2 is a diagram showing the operation control system of the loom, and FIG. 3 is a flowchart for abnormality detection and display of the display control device.
Figure 4 is a flowchart of data settings for the display control device;
FIG. 5 is a flowchart for power failure detection of the display control device, FIG. 6 is a flowchart for CPU self-diagnosis of the display control device, FIG. 7 is a flowchart for abnormality detection of the control device, and FIG.
The figure is a flowchart of CPU self-diagnosis of the control device, No. 9.
10 is a flowchart of abnormality detection in the control device, FIG. 10 is a flowchart of power failure detection in the control device, and FIG. 11 is a flowchart of the control device regarding reception between the display control device and the control device. ■... Loom control display device, 2... Display control device, 21
．． 22...2n...Control device, 3.13...CPU, 4
．． 14...Memory, 5.15...Interface, 6
．． 16...Power failure detector, 7.17...Retriggerable monostable multi-vibration break, 8.18a, 18b/-18n
・・Relay for abnormal output, 9・・Data setting device, 10・
・Indicator, 23a, 23b...23n...Abnormality detection sensor, 25...Driving relay, 26...Motor morph, 28
...Control circuit. Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 70 Figure 77

Claims (2)

[Claims] (1) In a loom equipped with multiple microcomputers to control each part of the loom, one microcomputer is a display control device that has a function of displaying abnormal locations, and the other microcomputers are control devices for each part. They are connected to each other by data communication lines and are also individually connected to the controllers of each part of the loom, and each controller independently detects abnormalities in each controller and the microcomputer itself and controls the operation of the loom. After the loom is stopped, the display control device searches each control device via the data communication line to find out which part of the controller and microcomputer has detected an abnormality.
A control and display device for a loom, characterized by its display function, which centrally displays the cause of a loom's stoppage on a display. (2) A control display for a loom according to claim 1, characterized in that the display control device and the plurality of control devices are equipped with a CPU having a self-diagnosis function and a power outage detector. Device.