JPS588112A - Method of measuring the boiled extent of cocoons - Google Patents

Abstract

PURPOSE:A shock wave is applied to a point on the trunk of a boiled cocoon and the damping oscillation is examined on its waveform characteristics at another point in a certain distance to give accurate information on the boiled extent of the cocoon simply. CONSTITUTION:A boiled cocoon is set in a prescribed position and a shock wave S1 is applied to a point of its trunk and the damping oscillation S2 is examined at another point in a certain distance on its characteristics such as the leading amplitude X1 of S2, logarithmic damping factor, showing the damping of S2, (it is defined by the equation where n means the n-th wave of S2 and Xn is the amplitude of the n-th wave), the frequency of S2 and the difference between its level before leading and convergent one h to evaluate the boiled extent of the cocoon.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for measuring the degree of boiling of a surface by focusing on its viscoelastic properties and instantly obtaining the characteristic values in order to know the degree of boiling of the surface. It is something.

In the cocoon-cocoon boiling process of a general silk mill, there is no system for determining the properties of the given raw material before cocoon-cocoon boiling, so the cocoon-cocoon boiling conditions suitable for the raw material are determined. However, it is difficult to set the conditions to boil cocoons, and then reel the silk.Based on the production information expressed by the raw silk yield, production efficiency, raw silk quality, etc., the cocoon boiling machine is Appropriate cocoon boiling conditions are found through a trial and error method of controlling the cocoon temperature, steam volume, cocoon boiling time, etc.

Since the ripeness of the cocoons that have been trap-boiled in this way cannot be determined unless they are reeled, it takes a considerable amount of time to find the optimal cocoon-cocoon boiling conditions, especially when the raw materials have different properties. In the case where the non-consignment side is continued and cocooned, when the production information of the consignment side is grasped, a separate consignment side must be cocooned, and in such a case, It was difficult to find cocoon boiling conditions suitable for the properties of the raw material.

Therefore, in the cocoon boiling process, in order to know the overspeed (boiled state of the cocoon), technicians use their years of experience and intuition to determine the hue of the cocoon, the hardness and elasticity when compressed according to instructions. However, it has been desired to develop a method to more accurately measure the boiling shape of the surface.

The purpose of the present invention is to provide a first method for obtaining boiling level information of a surface accurately and quickly, and which is easy to handle. Applying an impact force, detecting the damped vibration wave of the cocoon layer generated as a response wave at a certain distance from the point where the impact force was applied, and determining the rise size xl of the waveform of the damped vibration wave, the logarithmic damping rate δ, Response start 1 t 1 It is characterized by measuring and evaluating the boiling state of the surface based on the stemness value of the skeleton waveform, such as the difference between the rise level and the convergence level of the waveform.

Embodiments of the present invention will be explained below with reference to the drawings.

FIG. 1 shows a schematic diagram of an apparatus for carrying out a method for measuring the degree of boiling of a surface based on impact response characteristics.

The apparatus shown in the first figure is divided into a part for driving a vibrator for applying a shock wave to the cooked cocoon, and a part for detecting, recording and displaying the response wave tube from the cooked cocoon.

That is, in the former case, a pulse signal is output from a pulse signal generator, the pulse signal is amplified by an amplifier B, and the electrical pulse signal is converted into mechanical force by a vibrator OK (Fig. 2 f4).
It has a mechanism that applies an impact force having a waveform as shown in K to the cocoon layer, and has a function of recording the magnitude of the pulse wave input to the vibrator C with a recorder n. On the other hand, the latter has the function of detecting a response wave propagating through the cocoon layer at a fixed interval, for example, 10 meters away from the input point of the impact force acting on the cocoon layer, and storing and displaying the waveform. It is. That is, after the response wave is detected by the detector mK, it is amplified by the amplifier IK, and the waveform is temporarily stored in the waveform storage device G. This is because a damped oscillatory wave, which is a response wave, is generated instantaneously, and it is difficult to analyze even if the waveform is drawn on an oscilloscope, etc., so the waveform is stored in the waveform storage device G and then played back at a slow speed. This is to make it easier to analyze. The waveform storage device G used in this embodiment samples the analog signal at arbitrary timing and performs the M/D conversion 11. The signal is converted into an 8-bit digital signal and stored in a memory of 8 bits x 1024 words. According to the results of this experiment, it has been confirmed that even if the detected waveform is converted into an 8-bit digital signal, it can be reproduced without changing its original form. In this way, the response wave is stored in the waveform storage device G (and then the response waveform is displayed on the oscilloscope R screen and the waveform S is recorded on the recorder xK.

Next, to explain the method for analyzing the response waveform shown in Fig. 2 (b), when the response mm when an impact force is applied to the boiling surface is observed using an oscilloscope H or a recorder I, the second
It is known that the form of the damped oscillation curve changes according to a certain tendency by transitioning from simmered to aged simmered on the 0 side, which draws a damped oscillation curve as shown in Figure (b). In order to clearly express the damped vibration waveform shown in 2nd opening-), we devised a method of evaluation using the following characteristic values. That is, ■ The magnitude of the rising amplitude of the waveform Xl, ■
Logarithmic decay rate δ that represents the attenuation state of the waveform! Knee 1ogs, nine dashes n is damped vibration curve 1k
! %nth cycle of II is shown, and ZS shows the magnitude of the amplitude of the nth cycle. (2) Frequency f of the waveform; (2) Difference between the rising level and convergence level of the waveform.

In this way, as the characteristic value representing the cooked state St of the surface, the above-mentioned ■ ~
As evaluated in section 2, to briefly summarize the tendency of changes in various characteristic values due to changes in the state of boiling of the surface, as the cocoon transitions from simmering to stale, the magnitude of the rise in the waveform, X, becomes Daikichi. , the waveform rapidly attenuates, and the temperature reaches K such that permanent distortion occurs on the boiling surface. That is, the logarithmic attenuation rate '- increases, and the difference between the rising level and the convergence level of the waveform, h#, which causes permanent distortion of the boiling surface, increases. On the other hand, the frequency f of the waveform shows a tendency to become lower. In order to examine whether such a tendency is equivalent to the tendency in viscoelastic bodies that is generally modeled,
When a differential equation representing the behavior of the viscoelastic body model was assembled and a simulation was performed using an electronic computer, the tendency of the response waveform of the viscoelastic body and the results actually measured using boiled cocoons KRvh was found to be consistent. The credibility of this measurement method was confirmed.

Since the characteristic values of the response waveform of the boiling surface obtained by this measuring device change according to a certain tendency, when determining the boiling state, it is necessary to The cooked state can be determined by focusing on one of the characteristic values and understanding its change, or by comparing and examining the response waveform pattern of the properly cooked state and the measurement results.

In this way, immediately after cocooning, it is possible to grasp the boiling state t of the surface, which has conventionally been determined by the compression line with the fingertip, as a characteristic value of the response waveform that occurs instantaneously, and also to store the waveform in the waveform storage device. You can memorize and calculate various characteristic values instantly! By replacing it with a microcomputer, etc., it is possible to analyze the overspeed response waveform. This measuring device can be applied to the cocoon layer structure, such as the hardness of the cocoon layer and its state of relaxation, in order to understand the characteristics of raw cocoons before boiling them.

As described above, according to the method of the present invention, since it is possible to accurately grasp the boiling state of the surface after cocoon boiling as the characteristic value, it is a method of providing effective information when constructing an optimal cocoon cocoon boiling system using an electronic computer. It has the potential to be effective.

[Brief explanation of drawings]

FIG. 1 shows a pull diagram of an apparatus for carrying out the method of the invention. Figure 2 (a) shows the waveform of the shock wave applied to the boiled cocoon.
Open-) shows a damped vibration corrugated tube caused by the shock wave. M...Pulse signal generator B, Oscilloscope J...Mature Cocoon Procedural Amendment C Spontaneous Issue 2 Showa g~August 10th, Mr. Commissioner of the Japan Patent Office 1, Indication of the case, Patent Application No. 104/26 of 1982, 2, Name of the invention: Based on impact response characteristics Method for measuring the degree of ripeness of a surface 3, relationship with the case of the person making the amendment Patent applicant Wi Ba Nagama Kazuo 4, agent Personal income ``Detailed explanation of the invention in the name of the invention'' in the specification to be amended Contents of each column 7111 correct degree 11) The "title of the invention" in the specification is corrected to "method for measuring the degree of boiling of a surface using impact response characteristics." (2) "Finger whistle" on page 2, line 20 of the specification is amended to read "finger tip." (3) "Propagate through the cocoon layer" in line 9 of page 4 of the same book as "applicable"
and correct it. (5) Correct rX11J, page 6, line 2 of the same book, to “X inertia” @ (6) Correct “distortion”, line 18, page 6 of the same book, to “no”.

Claims (1)

[Claims] An impact force is applied to one point on the body of the boiling m1t, and the damped vibration wave of the cocoon layer generated as a response wave is detected at a distance from the point where the impact force was applied. The magnitude of the rising edge of the waveform of the vibration wave xl, the logarithmic damping rate a
A method for measuring the degree of boiling of a surface, characterized in that the state of boiling of the surface is measured and evaluated based on characteristic values of an axillary waveform, such as the wave number of a response wave and the difference between the rising level and the convergence level of the waveform.