JPS6013236B2 - Multi-point monitoring device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a multi-point monitoring device for monitoring a large number of monitoring objects, such as loom spindle thread cuts.

In the case of machine spindle thread trimming, for example, there is a method of monitoring by pulling out a signal line from the thread trimming sensor of each unit in an open-end type kale loom, etc., but this is very expensive, and There is a method of counting thread breakages in one spinning machine by measuring current changes caused by the operation of an electromagnetic device due to thread breakage, but it is unclear in which unit the thread breakage has occurred, and it takes a lot of effort and time to detect it. It took.

The present invention solves the above-mentioned problems, and allows signals from a large number of units to be extracted through a common signal line.
It is an object of the present invention to provide a multi-point monitoring device that can detect an abnormality in a specific unit even though signals are extracted through a common signal line.

In order to achieve the above object, the present invention provides a large number of monitoring conductors each connected to a large number of monitoring target contacts and provided in contact with a running endless belt, and a belt running direction of the monitoring conductor. two common guide fins provided on the upper side so as to contact the endless belt; a starting point conductor provided midway between the two common conductors so as to contact the endless belt; and at least one A large number of input conductors are provided so as to contact the endless belt at intermediate positions between two adjacent monitoring conductors, and a part of the endless belt has a plurality of input conductors that are connected to the common conductor as the belt runs. and the female point conductor, and between each of the monitoring conductors and the input conductor, and each of the monitoring conductors and the input conductor are provided with a large number of conductive portions arranged so as to bring them into contact with each other at different times, and further, a sampling start point and sampling rate setting unit that is connected to the starting point conductor and outputs a sampling start point signal and a sampling rate signal according to a signal when the conductor and the common conductor are electrically connected; and an input terminal connected to the input conductor; is connected, and a control terminal is connected to the output terminal of the sampling start point and sampling rate setting section, and the monitoring target contact is specified based on the sampling start point signal and the sampling rate signal from the setting section. This configuration includes a sampling section that samples input signals at a sampling rate and monitors the contacts to be monitored, thereby realizing multi-point monitoring with an inexpensive device.

An embodiment of the present invention will be described below based on the drawings.

FIG. 1 shows a schematic diagram of the entire structure. Reference numeral 1 denotes an endless belt, which contacts and drives a large number of driven pulleys 2-1, 2-2 to 2-N, which serve as monitoring conductors arranged at equal intervals. 3 indicates every other driven pulley, such as the center between the first and second driven pulleys 2--, 2-2, and the center between the third and fourth driven pulleys 2-3, 2-4. Tension pulleys and endless belts, which serve as input conductors arranged at the center of each interval, are pressed into contact with each of the driven pulleys 2-1, to 2-N, and the endless belt pulleys and each of the driven pulleys 2-1 to 2-2-
Secure contact with N. Each of the driven pulleys 2-1 to 2-N is a sensor contact A which is a moeting target contact.
-1, A-2 to A-N to the common signal line 4. Further, the tension pulley 3 is connected to the common signal line 5, and the driven pulleys 2-1 to 2-N and each tension pulley 3 are electrically insulated. The endless belt 1 is made of an insulator, and a second
As shown in Figures a and b, the guide portion 6 is formed by adhering a conductor or braiding electric wires 7, and its length in the belt length direction is as shown in Figure 3 between the driven pulley 2 and the conductor 6. 1-2-N
The distance between the tension pulley 3 and the tension pulley 3 adjacent to it is longer than that. Furthermore, there is one tension pulley 3 on the upper side in the belt running direction of these pulley groups.
and two driven pulleys adjacent to this, e.g. 2-1
. 1 and 8-2 are directly connected to the common signal line 4, and the dummy pulley 9 corresponding to the tension pulley 3 is connected to the signal line 101. The common signal line 4 is grounded, for example, and the signal lines 5 and 10 are connected to the bases of transistors 11 and 12, respectively, and the bases are pulled up with resistors. Also transistor 1
The emitters of 1 and 12 are grounded and the collectors are pulled up with a resistor, and their outputs are connected to signal lines 13 and 1.
It is taken out at 4. 15 is a belt drive motor.

Now, when the endless belt 1 runs, the conductive part 6 advances while short-circuiting the dummy pulleys 8 and 9 and the pulley groups 2 and 3 one after another.

That is, assuming that the sensor contacts A-1 to A-N' are normally closed, in the pulley groups 2 and 3, when the conductive part 6 short-circuits the pulleys 2-1 and 3, the pulse 1 in FIG. When pulleys 3 and 2-2 are short-circuited, pulse 2 is generated, and when pulleys 2-3 and 3 are short-circuited, pulse 3 is generated at a period position three times the period of pulse 1 and pulse 2. When the pulley 3 and the pulley 2-4 are short-circuited, a pulse 4 is generated at the same periodic position as the period of the pulse 1 and the pulse 2, and the signal line 1 is generated per rotation of the belt 1.
3, N pulse trains as shown in FIG. 4b are obtained.
And the pulse train of the signal line 13 is from sensor contact A-1 to
Corresponds to the state of A-N, for example, sensor contact A-6
When sensor contact A-N-3 is open, the pulse 6 corresponding to the contact A-6 is missing, and when the sensor contact A-N-3 is open, the corresponding pulse N-3 is missing. Further, when the conductive part 6 short-circuits the leading dummy pulley 8-1 and the dummy pulley 9, it generates the pulse 1' shown in FIG. , a pulse train as shown in FIG. 4a is obtained on the signal line 14 prior to the pulse train on the signal line 13.
The pulse train on the signal line 14 is used as information indicating the starting point of the pulse train appearing on the signal line 13 and information on the belt speed at that time, and the arrangement relationship between the pulleys 2 and 3 and the dummy pulleys 8-1, 8-2, and 9. If the pulse train of the signal line 13 is analyzed by a computer or the like, taking into account the belt speed at that time, the states of all the sensor contacts A-1 to A-N can be detected during one rotation of the belt. signal line 13
For example, the analysis is performed as follows. Prior to monitoring, the conductive part 6 of the belt 1 is connected to the dummy pulley 8-1.
, 8-2, 9 is input to the sampling start point and sampling rate setting unit 16, which determines the starting point for monitoring the pulse train of the signal line 13, and determines the monitoring start point at that point. The sampling time for the pulse train of the signal line 13 is determined from the period of pulses 1' and 2' corresponding to the belt running speed. That is, if the period of pulses 1', 2' on the signal line 14 is T, in this embodiment, the period of pulses 1', 2' on the signal line 13 is T,
The period of pulses 2 and 3 is determined to be 3T. Furthermore, if the position of the dummy pulley 8-2 is set in a predetermined relationship with respect to the driven pulley 2-1, the time delay between the pulse 1 of the signal line 13 and the pulse 2' of the signal line 14 will be It is determined when T of 1' and 2' periods is detected. Therefore, the sampling start point and sampling rate setting section 16 instructs the sampling section 17 about the sampling time based on the T detected by the dummy pulleys 8-1, 8-2, and 9.

The sampling section 17 samples the pulse train corresponding to FIG. 4 M input from the signal line 13 at the sampling start point and at the time instructed by the sampling rate setting section 16, and monitors the state of the sensor contact. For example, if pulse 6 and pulse N-3 are missing, it is determined that the corresponding sensor contacts A-6 and AN-3 are open, and this is recorded in the recording section 18 and an appropriate alarm is issued. Approximately 1 per side for open-end seiseki
The 100 units of 0-term funeral shells are driven by one endless belt, and the spindle is rotated by a driven pulley that is in contact with the endless belt.

In order to stop the sliver joining when the thread is cut, a feeler (reed switch, etc.) that electrically detects this is installed, and if this is used as a sensor contact, it will monitor the thread breakage of 10 false weights. can. Also, contacts that detect knee brake operation (limit switch, etc.)
It is also possible to consider a method in which a pulley or a contact piece corresponding to 2-1, 2-N is pressed against the belt by operating a knee brake and replaced with a sensor contact. Furthermore, if the information in the recording section 18 is processed by a computer, it is possible to constantly monitor spinning operations such as the number of abnormal spindle occurrences and the time required for repair, and to accurately grasp worker efficiency, thereby improving work efficiency. I can do it. Note that the arrangement of the tension pulleys is not limited to the center between the driven pulleys, and the power supply to the conductive portion is not limited to the tension pulleys.

Further, the positional relationship of the dummy pulley may not be the same as that of the driven pulley, and in this case, the sampling start point and sampling rate can be easily determined based on their positional relationship. As described above, according to the present invention, an endless belt is used as a medium for addressing signals, and status signals of a large number of contacts to be monitored can be collected with a simple attachment and one common line, which was previously impossible due to cost. Collects the status of targets that are monitored at multiple points and whose status changes infrequently (even if one signal line is installed, if the signal only changes once every few hours, the usage rate of the signal line will be very low) It is possible to realize an inexpensive device that can be used.

Furthermore, when applied to thread breakage monitoring in fine looms, existing belts, existing pulleys, and sensors can be used, making it extremely effective.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which FIG. 1 is a schematic diagram of the overall configuration, FIG. FIG. 4 is a side view showing the relationship between the pulley and the pulley, and FIG. 4 is a waveform diagram of each part in FIG. 1... Endless belt, 2-1 to 2-N... Driven pulley (monitoring conductor), 3... Number pulley (input conductor), 5, 10... Signal Line, 6... Conductive part, 8-1, 8-2...
...Dummy pulley (common conductor), 9...
Dummy pulley (conductor for female point), 13, 14...
... Signal line, 16... Sampling start point and sampling rate setting section, 17... Sampling section, A-1, A-2 to A-N... Sensor acid point (monitoring target contact). Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] 1 Each connected to a large number of monitoring target contacts,
and a large number of monitoring conductors provided so as to be in contact with the running endless belt; and two common conductors provided so as to be in contact with the endless belt on the upper side of the monitoring conductors in the belt running direction; A starting point conductor is provided to contact the endless belt at an intermediate position between two common conductors, and a number of inputs are provided to contact the endless belt at an intermediate position between at least every other adjacent monitoring conductor. A part of the endless belt has electrical conductors between the common conductor and the starting point conductor, and between each of the monitoring conductors and the input conductor as the belt runs. A large number of conductive parts are arranged so that the points of contact and conduction are different from each other, and the conductive parts are connected to the start point conductor, and a sampling start point signal is generated by a signal when the conductor and the common conductor are connected. and a sampling start point and sampling rate setting unit that outputs a sampling rate signal, an input terminal is connected to the input conductor, a control terminal is connected to the output terminal of the sampling start point and sampling rate setting unit, and the setting unit A sampling unit is provided that identifies the contact to be monitored based on a sampling start point signal and a sampling rate signal from and samples the input signal at a specific sampling rate to monitor the contact to be monitored. Multi-point monitoring device.