SU752137A1 - Apparatus for measuring relative deformation of material - Google Patents

Description

one

The invention relates to the field of measurement technology in light industry and can be used to determine the shrinkage or stretching of materials in various technological processes, such as textile manufacturing.

A device for determining the relative deformation of a material is known, comprising input and output impulse sensors of material length, installed at the inlet and outlet of the material processing zone, associated with a strain gauge comprising two keys, a counter and a delay element, and an indicator associated with the strain gauge output. one.

A disadvantage of the known device is that it is impossible to determine the sign of the deformation of the material.

The aim of the invention is to expand the functional capabilities of the device.

This goal is achieved by the fact that the strain gauge has a serially connected memory block and an invertor, an additional delay element, a block is closed and a deformation strain detection unit, while the output material length sensor and the key outputs are connected to the first input of the counter, the first output of which is connected to the first input of the memory unit, the input length sensor of the material is connected to the first input of the first key, to the second input of the memory unit, the input of the delay element and the first input of the determination unit ka deformation, the second input of which is connected with the second output of the counter, and the output with the inverter's input, the output of the delay element and connected to the input of the second key, 10 to the third input of the memory unit, the second input and the receiver, and through an additional delay element to the second inputs of the first key and counter.

The drawing shows the principle 15 a diagram of the proposed device.

The device contains pulse sensors 1, 2 of the length of the material, and the output sensor 2 is measuring and has a gear ratio not less than 20 times greater than the gear ratio of the input sensor 1, which is basic. The gear ratio in this case refers to the number of output pulses of the sensors, which is equivalent to the base length of the material. Thus, the transfer coefficient of the measuring sensor 2 is such that 10 pulses appear at the output of the base length of the material at its output. The indicator n determines the theoretically possible accuracy.

measurement, i.e., with increasing magnification, it is theoretically accurate to measure. The sensors are iodo-connected to the strain gauge 3, which consists of 13 block bursts 4, electrically connected with iervom (active) 5 and second (iaive) 6 keys, counter 7, connected with us 8 and ivertor 9, block 10 is determinedre the deformation, one of the inputs is coaxially connected to the output of the counter 7. The other input of the block 10 is determined by the sign of the deformingNC11 connected to the input sensor 1 of length, and the output is connected to the first input of the inverter 9. The input of the element 11 zadrel: ki is connected to the input length sensor, and the output is associated with the input of the national key 6, with three the input of the block is us 8, the second input of the receiver 9 and the input of the additional delay element 12, the output of which is connected to the second inputs of the counter 7 and the active key 5. The output of the receiver 9 and keys to the deformation indicator 13, which consists of the digital display unit 14 and the unit 15 output to digital printer.

The deformation sign determining unit 10 ensures the data from the memory unit 8 to be sent out and the readings are transmitted in the ir code (if there is a process of stretching during measurements

1 iz - k

A - or if the process is taking place

one

shrinkage during measurement

the mule L -) or in the counter code (if

four

It has a process of extracting IRP

FDI according to the formula A

- or shrinkage

k-l

when measuring io formula L k

The operation of the device is as follows.

When the device is turned on with the help of instantaneous recharging by means of a special tool (not shown), the counter 7, the block of these 8 and the deformation spike detection unit 10 are reset, and the passive switch 6 is set to prevent the signal from the sensor 2 from passing through block ban 4 on the counter 7.

The pulse coming from the output of the base sensor 1 switches the active key 5 to a position that provides the second signal to the input of the block 4, then repeats the repeated signal to zero the block 8 and goes to the block 10. The delay delayed by the delay element 11 from the base sensor 1 arrives at the passive key 6, which fixes the beginning of the measurement cycle and removes the prohibition to pass the signal from the sensor 2 to the counter 7 through the prohibition block 4. At the same time, with the same impulse, the command is given to rewrite the information 13 of the working counter 7 into the block and The transmission of this information through the inverter in and out of the deformation indicator.

The passive key G accepts a stable igo when the pulse is received from the element I, and the delay does not change during further operation of the device. Inverter 9 of the irregular signal from the strainer deduction unit and the available pulse from the delay element 11 eliminates the transmission of data from the eight or eight unit and the indicator 13 in the opposite code with the minus and iul. After

This emulsion, delayed by a second delay element 12, zeroes the counter 7 and connects with the help of the active key 5 and the block the output 4 of the sensor 2 to the counter 7.

The capacity of the counter 7 and the block and these 8 should not be less than the transmission number of the sensor 2 n is determined by the required measurement range. So, for example, when needed,

Accuracy up to 1%, the capacity of the counter and the unit 8 must be at least 10, and the need for measurements with an accuracy of 0.1% is not less than 10. The measurement accuracy is maximum possible within the limits of + (), where n is the indicator and the relative ratio and the maximum limits of measurement lie within the limits + 10 -1-4-10 «-2.

I need to measure L / 2

SRI and formula A

ozovovy datl

Figure 1 is set at the beginning of the material deformation zone, and if necessary, the measurement of the formula A is

- at the end of the deformation zone.

2

If the process is exhausted by the exhaustion of the measured material and the sensor 2 is installed at the exit of the deformation zone, then the impulse from this sensor goes to counter 7 before the second pulse from the baseline arrives at the deformation meter 3 circuit.

sensor 1. In this case, the counter 7 will automatically zero, it is sent to the unit 10 to determine the sign of the deformation, which is transferred to a state that provides a postulated signal to

the input of the inverter, it prepares the reading of information from the Tam 8 block in the forward code and flashing the + sign on the indicator 13. Above they continue to record the imiuleae in the memory of the counter 7.

Claims (1)

When the second pulse passes from the base sensor 1, a pulse is applied to the deformation sign determining unit 10, the unit 8 is reset and the active key 5 switches. After the delay element 11 is decelerated, the same pulse is given to write to the memory unit 8 of the data from counter 7 and transferring this data from the memory block 8 through the inverter 9 to the indicator 13. Switching the active key 5 stops the nostating of the pulses from the sensor 2 to the work counter 7 at the time of data census to the memory block 8, and the transmission of data x c block memory 8 na 13 ipdikator deformation inverter 9 is performed in the forward feed code and sign +. Upon further passage of the imiuls from the base sensor 1 through the additional delay element 12 and the counter 7 is reset, and the actuation key 5 is tilted. The pulses from the sensor 2 start to be fixed again by the counter 7, and the operation cycle is repeated. The signal at the output of the deformation sign determining unit 10 appears when the pulse arrives from the counter 7 and is retained when the pulses from the counter 7 and sensor 1 pass alternately, which occurs when the stretching process is recorded by the formula A or the process of shrinking - / 2 gk Formula A - :. The signal from the output of block 10 is removed when two signals from sensor 1 are received by it, which occurs when the shrinkage process is registered using the formula A ° or drawing and formula A - - this case does not cause the counter 7 capacity to overflow and no pulse is emitted The deformation sign determining unit 10, to which two pulses of the second order will be supplied from sensor 1 of the first, at the beginning, and the second at the end of the cycle. Under these conditions, the device; It works in the sequence described above, but the transfer of data from the memory block 8 to the deformation indicator 13 will be recorded in the counter code with the minus sign displayed. The proposed device has a measurable base and a small interval to obtain measurement results, which allows it to be used for servicing several technological processes. Apparatus of the Invention A device for determining the relative deformation of a material, comprising input and output pulse length sensors of a material, installed at the inlet and outlet of the material processing zone, associated with a strain gauge comprising two keys, a counter and a delay element, and an indicator associated with the meter output deformation, characterized in that, in order to extend the functionality, the strain gauge has a sequentially connected memory block and an inverter, an additional element of delay and, the prohibition unit and the deformation sign detection unit, while the output length sensor of the material and the key outputs are connected to the first input of the counter through the prohibition unit, the first output of which is connected to the first input of the memory unit, the input length sensor of the material is connected to the first input of the first key to the second input of the memory unit, the input of the delay element and the first input of the deformation sign detection unit, the second input of which is connected to the second output of the counter, and the output to the first input of the inverter, the output of the delay element is connected to the second input of the key, the third input of the memory unit, the second input invetora and through an additional delay element to the second inputs of the first switch and a counter. Sources of information taken into account prn examination 1. USSR author's certificate N ° 453557, cl. G 01B 7/04, 1972.