SU765425A1 - Apparatus for measuring relative deformation of textiles - Google Patents

Description

one

The invention relates to the field of measurement technology in the light industry, is intended to measure the processing of weaving on weaving machines and can also be used to control the shrinking or stretching of material in various technological processes.

A device for determining the relative deformation of textile materials. A material containing impulse length sensors installed at the inlet and outlet of the material processing zone is connected to the strain gauge through the switch and the indicator connected to the output of the strain gauge i.

The main disadvantage of it is that electrical impulses, the number of which is proportional to the length 20 of the material that has passed the deformation zone, are formed directly by length sensors. To obtain the results of measuring the relative deformation with an accuracy of 0.1% when passing through the base length, 1000 pulses must be obtained from the sensor. This is practically impossible when measuring the processing of thread yarns on machines with a low speed of movement of the threads. Jg

The purpose of the invention is to improve the accuracy of determining the relative deformation.

This is achieved by the fact that the strain gauge contains a generator t & pulses, a decoder, a computing unit, a breaker and keys, while the outputs of the clock generator through the keys are connected respectively to the counter input and the decoder to the input of the computing unit, the first output of the counter is connected to the control input of the decoder, and the second to the first input of the transducer and to the control input of the switch, the first output of which is connected to the control input of the first key, and the second through the interrupter under shochen yuscheglu to the control input of the second key.

The drawing is a schematic diagram of the device.

It contains two pulse sensors of length 1 and 2, electrically connected with strain gauge 3, the output of which is connected to indicator 4. The strain gauge includes switch 5, generator 6 clock pulses, breaker 7, keys 8

and 9, the command counter 10, the decoder 11 and the computing unit 12.

The device works as follows.

When the device is turned on, the enable signal from the clock generator 6 also appears at the output of the chopper 7; through the switch 8, the command pulses are fed to the input of the counter 10, and when a next pulse arrives at its first output, a certain code appears at its first output. Coded signals from the first output of the counter 10 through a decoder

11 are transmitted to the computing unit

12 and prepare the latter for the summation of information pulses of the clock generator. Simultaneously with the PF phenomenon, at the first output of the 10 signal counter in the code, which provides the computing unit 12 summation of information pulses, a command signal also appears at its second output to the second input of the interrupter 7 and to the third input of the switch 5,

; When a command is received at the second input of the chopper 7, the enable signal is removed from its output, which is fed to the control input 8, as a result of which the pulses from the generator 6 are temporarily interrupted at the counter 10 clocking pulses, and when the command is received at the third input of the switch 5 a state that ensures cyclic pulses of the sensor 1 through it.

When the first cyclic pulse arrives from the sensor 1 at the input of the switch 5, a signal appears at its first output, and the pulses from the generator 6 through the first key 9 and the decoder 11 begin to flow to the input of the computing unit 12, where they are summed up. When the thread passes the base length, a cyclic pulse appears at the output of sensor 1, with the arrival of which the enabling signal is removed from the first output of the switch 1 of switch 5, and from the second output of the switch 5, a command pulse is sent to the first input of the chopper 7. When removed the permission signal from the second input of the key 9 stops the flow of information pulses from the generator b through the decoder 11 to the computing unit 12, and when the command signal arrives at the first input, the interrupter 7 reappears The second signal at its output and the clock pulses from the generator b through the key 8 begin to flow to the counter 10.

When the clock pulses re-arrive at the counter 10, the help of the decoder 11 translates into the memory of the computing unit 12 the number of dialed information

pulses from generator 6 and the preparation of computing unit 12 to calculate the next series of information pulses.

Simultaneously with the issuance of the transmitter 10 through the decoder 11 to the computing unit 12 a command ensuring its preparation for re-summation, the command output to the second input of the interrupter 7 and the third input of the switch 5 appears again on the second output of the counter 10. the passage of the clock pulses from the generator b to the counter 10, and the input switch 5 is transferred to the state allowing the cycle pulses from the sensor 2 to pass through it.

Upon the subsequent arrival of the first cyclic pulse from sensor 2 to the input of switch 5, the enabling signal appears again at its second output and information pulses from generator b send through key 9 through the decoder 11 to the input of computing unit 12. At the moment of receiving the second cyclic pulse c The sensor 2, which fixes the passage of the base length of the fabric, again removes the enabling signal from the second input of the key 9, as a result of which the flow of information pulses from the generator 6 to the computing unit stops 12 and a command impulse is applied again via the second output of the switch 5 to the first input of the chopper 7. This releases the enable signal from the second input of the key 8 and the clocking pulses from the generator 6 begin to flow again to the input of the counter 10.

The arrival of the clock pulses to the counter 10 provides the transfer from the decoder 11 to the computing unit 12 corresponding commands to perform the necessary arithmetic operations for calculating the utavity of the warp threads when forming the fabric in percent. measurement and calculation. At this point, the operation of the device is completed. To repeat the cycle, it is necessary to reset the switch 5, breaker 7, counter. 10 and computing unit 12, which is achieved by pressing the start button (not shown in the drawing).

The proposed apparatus allows the control of thread running on weaving machines on bases of the order of 510 cm, thanks to which measurement results are obtained in minimal time intervals and the time for monitoring and setting weaving machines is significantly reduced.

In addition, the device can also be used to periodically monitor the value of

strain values at various technological operations.

Claims (1)

1. USSR author's certificate 5 No. 247218, cl. G 01 B 7/04, 1967.