JPS5914564B2 - Method for measuring the boiling state of cocoons using the unraveling tension of cocoon threads - Google Patents

Description

[Detailed Description of the Invention] The unraveling tension generated when raw silk is kneaded by binding together several cocoon filaments contains a lot of information related to the boiling state of the surface.

For example, when the surface ripening is the landing point, the adhesion force within the cocoon layer is large, which increases the dispersion of the unraveling tension. It shows a tendency to become smaller.

In addition, if the cocoon layer does not ripen evenly and uneven boiling occurs, or if the cocoon layer appears to be ripening evenly but there are many hard sticky parts, the adhesion strength exceeds the wet strength of the cocoon filament, inducing breakage of the cocoon filament and reducing the unravelability of the surface.

If it is possible to measure and detect the state of dispersion in the unraveling tension and the hard sticking points within the cocoon layer, it will be possible to know the state of boiling on the surface and the state of boiling spots.

An object of the present invention is to provide a method for obtaining surface boiling information from the unraveling tension of cocoon silk during reeling, and a means for measuring the unwinding tension of cocoon silk during reeling, and a method for measuring the unwinding tension of cocoon silk during reeling. a variance calculation means for calculating an average value by integrating the resolved tension signal outputted from the means, subtracting the average value from the resolved tension signal, and then squaring and integrating the value; A standard deviation calculation means for square rooting the output of the calculation means, and an added value of the average value and the output amplification value of the standard deviation calculation means from the unraveling tension signal indicating the rigid adhesion state between the cocoon filament and the cocoon layer in the side body. means for subtracting and pulsing the resolved tension signal indicating the hard stalemate state, estimating the dispersion of the resolved tension from each output of the variance calculating means and the standard calculating means, and pulsing the resolved tension signal. The method is characterized in that the boiling state of the surface is evaluated by analyzing the generation distribution state of the output pulses of the means for doing so.

First, the principle of measuring the boiling state of a surface according to the present invention will be explained from the method of evaluating the dispersion of the loosening tension.The detection signal of the loosening tension has a shape as shown in FIG. 1A, If this continuous fluctuation is x(t), its average value μ
is as shown in Figure B, μ=+10Tx(t) at(
T: arbitrary time).

Its variance σ2 is 4-fo T(X(t)-μ)2dt,
! The standard deviation σ is expressed as its square root as shown in FIG.

On the other hand, in order to detect the hard sticking point in the cocoon layer, nσ
(for example, 2, 2.5.3 for n), and in the figure F, (μ+
nσ).

Thus, in the same figure F, (μ+nσ) and x(t
), x(t) is (μ + nσ) in G and H in the same figure.
The idea is to turn larger points into pulses and find out the cooked state of the surface from the pulse generation state.

Next, a block diagram of an electronic circuit of an apparatus for carrying out the method of the invention shown in FIG. 2 will be described.

When the unraveling tension signal x(t ) and output from terminal O.

This is time-integrated into an average value μ-x(t) in an integration circuit B having an arbitrary time constant, and then in a subtraction circuit C to which this average value 7■ is input, (X(t)-X(t)) The calculation is performed, and the output becomes this absolute value 1 x (t) - mωN by the full-wave rectifier circuit, which passes through the squaring circuit E to calculate (x (t) - x (t) ) 2 will be held.

This output is T When it is time-integrated by the integrating circuit F, it becomes -7f.

(x(t)-maω)2dt, which is output from the terminal P as a signal σ2 indicating dispersion.

On the other hand, this signal passes through the square root circuit G to become a signal σ indicating the standard deviation and is outputted to the terminal q, and is amplified by the variable multiplier H (multiplying factor n) to become nσ, which is input to the adder circuit (2).

In this addition circuit ①, the average values μ and nσ are added, and then in a subtraction circuit J, the solution tension x(t) is calculated from (μ + nσ
) is performed, and this output signal (X(1)-(μ+n
σ)) is pulsed by a pulse signal shaping circuit K.

In addition, when observing the unraveling tension of the cocoon filament, as shown in Fig. 3, there was a phenomenon in which the tension suddenly increased as shown in Fig. 3B at the time of weaving (Fig. 3A). If converted by the above-mentioned electronic circuit, there is a possibility that the pulse wave at the time of welding will also be included in the measurement signal, as shown in C in the same figure.

Therefore, the driving operation of the weaving frame of the reeling machine is detected by a microswitch, etc., and inputted from the terminal U as y(t) shown in Fig. 2. After being amplified by an amplifier consisting of an OP amplifier, as shown in Fig. 2. canceled by logic circuit M (Fig. 3D)
) The circuit has a circuit configuration that does not detect tension fluctuations caused by welding.

In this way, the state of hard adhesion between the cocoon thread and the cocoon layer due to the loosening tension is outputted as a pulse signal from the terminal S and counted by the electronic counter N.

To explain an example of the method described above, first, the distribution state of the unraveling tension is estimated from the evaluation value of the dispersion of the unraveling tension expressed by the dispersion or standard deviation of the unraveling tension, and the It becomes possible to evaluate the state of stalemate.

On the other hand, as a result of analyzing the pulse generation state that indicates the hard sticking point between the cocoon silk and the cocoon layer, it was found that the number of pulses generated within a certain time interval during reeling or within a certain raw silk length follows a Poisson distribution.
As a result of the chi-square test, it was found that the time interval between pulses or the raw silk length distribution followed an exponential distribution.

Therefore, if the average value of these distributions is known, its variance and standard deviation can be immediately determined, and the pulse generation distribution state can be estimated.

Fig. 4 shows an example of the measurement results (shown by a solid line).

The broken line shows the theoretical value), which is the melting rate A39%, 8
This is an analysis of the generation state of pulses of tension representing a magnitude of (μ+2σ) or more for surfaces different from 70% and C93%, and summarizes the frequency of pulse generation within a 40 m interval of raw silk.

According to this, in cocoons with a low unraveling rate of 39%, the frequency of pulse generation within a constant length of raw silk is high, and the unraveling rate is 70%.
It can be seen that the frequency of pulse occurrence is low in cocoons with a high unraveling rate of 93, and that pulses are not generated very often.

Also, looking at the average values of these distributions, for cocoons with a low unraveling rate of 39, the average value λ is 4.11, which is a large input unsolved rate of 70.
% of cocoons, λ is 0.92, and for cocoons with a dissolution rate of 93%, λ
shows a value of 0.37, and as the resolution of the surface improves, λ decreases, and its distribution state is greatly different, and there is a clear difference in the pulse generation state between cocoons with good resolution and cocoons with poor resolution. is known.

The key to cocoon boiling technology is that for areas with poor unraveling, such as those with a unraveling rate of 39%, the cocoon is boiled in a way that improves the unraveling of the cocoon threads, without sacrificing raw silk quality or raw silk yield. The aim is to increase the silk reeling efficiency within the range, and for well-dissolved cocoons, increase the raw silk yield as much as possible within a range that does not impair the silk reeling efficiency and raw silk quality. It is desirable that the cocoons shown in the 11th example be boiled so that λ is as small as possible without deteriorating the reeling performance.

Therefore, as a result of studying the method of controlling the boiling state of the surface from the relationship between the measurement results obtained by this method and the silk reeling test results, it was determined that, for example, the average value λ of the number of pulses at intervals of 40 m of raw silk should be 2 or less. On the other hand, in a well-resolved cocoon where λ is less than 1,
λ is set to 0 so as not to impair the raw silk yield and raw silk quality.
．． A score of 4 or higher was required.

By analyzing the pulse generation distribution state in this way, it is possible to understand the sticking state of the cocoon threads, and it becomes possible to finely control the state of boiling of the surface.

In addition, as the frequency of occurrence of the cocoon thread's hard adhesion force increases, there will be many situations where the cocoon thread's adhesion force is greater than its wet strength, and the probability of the cocoon falling will also increase. Therefore, by analyzing the pulse generation distribution state, It is also possible to understand the resolvability of the surface.

As described above, according to the method of the present invention, by measuring the unraveling tension of the cocoon filament, it is possible to control the state of boiling from the adhesion state between the cocoon filament and the cocoon layer, and furthermore, the state of hard adhesion between the cocoon filament and the cocoon layer. By detecting this as a pulse, the unravelability of the surface can be estimated, which has the effect of providing information that is effective as feedback information for controlling the surface to an optimal boiling state.

[Brief explanation of the drawing]

Figures 1A-H are explanatory diagrams of the measurement principle of the present invention, Figure 2 is a block diagram of an electronic circuit of an apparatus for carrying out the method of the present invention, and Figures 3A-D are explained in Figure 2. The waveform diagrams of each part when performing tension waveform conversion, and Figure 4 A, B, and C show examples of analysis of the measured results. A, L...Amplifier, B, F...Integrator circuit, C2J...Subtraction circuit, D-...Full wave rectifier circuit, E...・・Square circuit, G・・・Square root circuit, H・・Variable multiplier, L・・Addition circuit, K・・・Pulse signal shaping circuit, M・・・・
...Logic circuit, N...Counter, X(t).
...Removal tension signal, y(t)...Cutting rod drive signal.

Claims (1)

[Claims] 1. A means for measuring the unraveling tension of the cocoon silk during reeling, and calculating an average value by integrating the unwinding tension signal output from the means, and subtracting the average value from the unwinding tension signal. and then a variance calculation means for squaring and integrating the value;
Standard deviation calculation means for square rooting the output of the variance calculation means;
The unraveling tension indicative of the rigid agglutinative state is obtained by subtracting the added value of the average value and the output amplification value of the standard deviation calculating means from the unraveling tension signal indicative of the rigid agglutinative state between the cocoon filament and the cocoon layer in the side body. means for pulsing the signal, estimating the dispersion of the solution tension from each output of the variance calculation stage and the standard calculation stage, and analyzing the generation distribution state of the output pulses of the pulsating means. A method for measuring the boiling state of a surface using the unraveling tension of the surface, characterized in that the boiling state of the surface is evaluated by