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CN-122016123-A - Detection method for roller pressure of fish peeling machine

CN122016123ACN 122016123 ACN122016123 ACN 122016123ACN-122016123-A

Abstract

The invention relates to the technical field of roller pressure detection, in particular to a detection method for roller pressure of a fish peeling machine. The method comprises the steps of synchronously obtaining a first pressure signal, dynamic deformation of a fish body, surface glossiness and an equivalent Young modulus signal during rolling, obtaining a dynamic elastic coefficient and a deformation buffering component based on deformation signal analysis, obtaining a comprehensive lubrication coefficient and a mucus lubrication loss component based on glossiness signal analysis, obtaining a comprehensive hardness impedance coefficient and a hardness loss component based on Young modulus signal analysis, selecting a fusion strategy and outputting an equivalent roller peeling pressure according to the first pressure value and the influence significance of the components, comparing the first pressure value with a target pressure ratio, generating a global optimization factor if the target pressure ratio is not up to standard, optimizing a calculation model of each loss component, and re-fusing until a standard pressure detection value is output. The invention solves the problem that the traditional pressure detection is distorted and the accurate peeling pressure cannot be obtained due to the deformation of the fish body and uneven mucus and hardness.

Inventors

  • XIONG MIN
  • XU SHIJIE

Assignees

  • 欧泰贡(珠海)食品科技有限公司

Dates

Publication Date
20260512
Application Date
20260303

Claims (10)

  1. 1. A method for detecting the roller pressure of a fish peeling machine is characterized by comprising the following steps of, Synchronously acquiring a first pressure signal generated when the roller rolls on the surface of the fish body, a dynamic deformation signal of the surface of the fish body, a glossiness signal of the surface of the fish body and an equivalent Young modulus signal; Obtaining a dynamic elastic coefficient based on the dynamic deformation signal to determine whether the deformation of the fish body has an influence on the roller pressure or not and determine a deformation buffering component; Obtaining a comprehensive lubrication coefficient based on the surface glossiness signal to determine whether the mucus quantity of the fish body has an influence on the roller pressure or not and determine a mucus lubrication loss component; obtaining a comprehensive hardness impedance coefficient based on the equivalent Young modulus signal to determine whether the hardness of the meat of the fish body has an influence on the roller pressure or not and determine a hardness loss component; obtaining a first pressure value based on the first pressure signal, and determining a fusion strategy according to the factors which are determined to be significant in influence so as to output equivalent roller peeling pressure; determining whether the output equivalent roller peeling pressure meets the standard or not based on the target peeling pressure, and determining a global optimization factor to optimize the calculation process of each loss component so as to obtain new optimized loss components; and (3) based on the optimized new loss component, re-fusing to obtain new equivalent peeling pressure, and completing detection of the roller pressure under the condition that the new equivalent peeling pressure is qualified.
  2. 2. The method for detecting roller pressure of a fish skinning machine according to claim 1, wherein the step of determining whether the deformation amount of the fish body has an influence on the roller pressure comprises, Extracting deformation establishing time constant and steady state deformation depth based on the dynamic deformation signal; calculating according to the deformation establishing time constant and the steady state deformation depth to obtain a dynamic elastic coefficient; comparing the dynamic elastic coefficient with the standard dynamic elastic coefficient; And determining that the current deformation of the fish body has an influence on the roller pressure based on the dynamic elastic coefficient being larger than the standard elastic coefficient.
  3. 3. The method for detecting roller pressure of a fish peeling machine according to claim 2, wherein the process of determining the deformation buffer component comprises, Acquiring a first pressure value based on the first pressure signal; calculating to obtain an absolute difference value according to the dynamic elastic coefficient and the standard dynamic elastic coefficient; comparing the absolute difference value with a standard absolute difference value; determining a first deformation buffer component based on the absolute difference being less than or equal to a standard absolute difference; determining a second deformation buffer component based on the absolute difference being greater than a standard absolute difference; The first deformation buffer component is the product of a first loss coefficient, an absolute difference value and a first pressure value, and the second deformation buffer component is the product of a second loss coefficient, an absolute difference value, a first pressure value and a proportional amplification factor.
  4. 4. The method for detecting roller pressure of fish peeling machine as claimed in claim 3, wherein the process of determining whether the amount of mucus of the fish body has an effect on roller pressure comprises, Performing spectrum analysis based on the surface glossiness signal, and extracting dominant frequency and signal energy ratio; calculating to obtain a comprehensive lubrication coefficient according to the dominant frequency and the signal energy ratio; Comparing the comprehensive lubrication coefficient with a standard lubrication coefficient; and determining that the current viscosity of the fish body has an influence on the roller pressure based on the fact that the comprehensive lubrication coefficient is larger than the standard lubrication coefficient.
  5. 5. The method for detecting roller pressure of a fish peeling machine according to claim 4, wherein the determining the loss of lubrication by mucus component comprises, Calculating to obtain an absolute lubrication deviation value according to the comprehensive lubrication coefficient and the standard lubrication coefficient; Comparing the absolute lubrication deviation value with a standard absolute lubrication deviation value; Determining a first viscous-fluid lubrication loss component based on the absolute lubrication deviation value being less than or equal to a standard absolute lubrication deviation value; determining a second viscous-fluid lubrication loss component based on the absolute lubrication deviation value being greater than a standard absolute lubrication deviation value; the first viscous liquid lubrication loss component is the product of a first lubrication loss coefficient, an absolute lubrication deviation value and a first pressure value, and the second viscous liquid lubrication loss component is the product of a second lubrication loss coefficient, an absolute lubrication deviation value, a first pressure value and a lubrication enhancement factor.
  6. 6. The method for detecting roller pressure of a fish skinning machine according to claim 5, wherein the process of determining whether the hardness of the meat of the fish body has an influence on the roller pressure comprises, Carrying out space statistical analysis based on the equivalent Young modulus signal to obtain the mean value and the variation coefficient of the Young modulus; Calculating to obtain a comprehensive hardness impedance coefficient according to the mean value and the variation coefficient; Comparing the comprehensive hardness impedance coefficient with a standard hardness impedance coefficient; and determining that the hardness of the meat of the current fish body has an influence on the roller pressure based on the fact that the comprehensive hardness impedance coefficient is larger than the standard impedance coefficient.
  7. 7. The method for detecting a roller pressure of a fish peeling machine according to claim 6, wherein the determining the hardness loss component comprises, Calculating to obtain an absolute impedance deviation value according to the comprehensive hardness impedance coefficient and the standard hardness impedance coefficient; comparing the absolute impedance deviation value with a standard absolute impedance deviation value; Determining a first stiffness loss component based on the absolute impedance deviation value being less than or equal to a standard absolute impedance deviation value; Determining a second stiffness loss component based on the absolute impedance deviation value being greater than a standard absolute impedance deviation value; the first hardness loss component is the product of a first hardness loss coefficient, an absolute impedance deviation value and the first pressure value, and the second hardness loss component is the product of a second hardness loss coefficient, an absolute impedance deviation value, the first pressure value and a loss enhancement factor.
  8. 8. The method of claim 7, wherein determining the fusion strategy based on factors determined to be significant in effect to output an equivalent roller peeling pressure comprises, Acquiring the number of factors determined to be significant; determining to sum the first pressure value and pressure loss components corresponding to all factors which are determined to be significant in influence on the basis that only part of the factors are determined to be significant in influence, and obtaining the equivalent roller peeling pressure; Determining that the first pressure value is obviously influenced based on all factors, and summing the first pressure value with the deformation buffer component, the mucus lubrication loss component and the hardness loss component to obtain equivalent roller peeling pressure; And on the basis of no factor, judging that the influence is obvious, directly adopting the first pressure value, and outputting the equivalent roller peeling pressure.
  9. 9. The method for detecting roller pressure of fish peeling machine as defined in claim 8, wherein the determining whether the output equivalent roller peeling pressure meets the standard comprises, Acquiring an absolute pressure deviation value between the equivalent roller peeling pressure and the target peeling pressure; comparing the absolute pressure deviation value with a standard pressure deviation value; And determining that the output equivalent roller peeling pressure does not reach the standard based on the fact that the absolute pressure deviation value is larger than the standard pressure deviation value.
  10. 10. The method for detecting roller pressure of a fish peeling machine of claim 9, wherein the determining a global optimization factor comprises, Calculating according to the absolute pressure deviation value and the standard pressure deviation value to obtain the ratio of the absolute pressure deviation value and the standard pressure deviation value; Comparing the ratio with a standard ratio; determining a first global optimization factor based on the ratio being less than or equal to a standard ratio; Determining a second global optimization factor based on the ratio being greater than a standard ratio; The first global optimization factor is a square value of a quotient of the ratio and the standard ratio, a second product of a second optimization intensity coefficient and the square value is calculated, and finally, the second product is calculated by adding the value 1 to the second product.

Description

Detection method for roller pressure of fish peeling machine Technical Field The invention relates to the technical field of roller pressure detection, in particular to a detection method for roller pressure of a fish peeling machine. Background In a large-scale industrial fish peeling production line, in order to realize automation and quality control of peeling, it is important to detect the pressure applied by peeling rollers accurately in real time. At present, a direct measurement method of installing a force sensor on a roller support shaft is mainly adopted in a factory, or indirect calculation is carried out by monitoring the pressure of a driving system and the current of a motor. The method simplifies the contact of the roller and the fish body into the action between the rigid bodies, and the obtained internal force signals are the internal force signals of the mechanical system. However, fish as a biomaterial having characteristics of viscosity, elasticity and hardness unevenness, the biomechanical behavior thereof causes serious failure of the conventional detection method in high-speed continuous processing. Elastic deformation of the fish body tissue can buffer pressure, surface mucus can change friction and cause pressure loss, and the difference of meat hardness affects pressure transmission efficiency. The coupling effect of the three time-varying factors causes the internal force signal measured at the shaft end to have huge and unstable deviation from the effective pressure truly acting on the fishskin peeling interface. The traditional open loop detection method can not strip and quantify the interferences, and can not be adjusted in a self-adaptive manner when the fingerling, the individual and the freshness are changed, so that the detection result is distorted, the process control precision is low, the product quality fluctuation is large, the loss rate is high, the manual experience adjustment is seriously relied on, and the requirements of large factories on high-stability and low-loss continuous production are difficult to meet. Chinese patent publication No. CN109329365A discloses a shallow peeling machine for fish, which can avoid the slipping phenomenon of a feed roller and efficiently finish the shallow peeling work of fish. The fish shallow peeling machine comprises a feeding belt which is obliquely arranged, wherein a feeding roller and a cutter roller are arranged at the bottom of the feeding belt, a transmission shaft of the feeding roller is parallel to a rotation shaft of the cutter roller, a plurality of feeding rollers are coaxially arranged on the rotation shaft of the feeding roller along the axial length direction, driving wheels are arranged at two ends of the transmission shaft of the feeding roller, the driving wheels are connected with a driving shaft through the driving belt, driving shaft parts at two ends of the feeding rollers are hinged with the lower end of a movable support, the movable support is a frame-shaped support which is obliquely arranged, the middle part of the movable support is hinged with the driving shaft, the upper end of the movable support is connected with a fixing rod through a return spring, feeding teeth are arranged on the roller surface of the feeding roller along the axial length direction, and cutter teeth are arranged on the roller surface of the cutter roller along the axial length direction. It can be seen that the fish shallow skinning machine has the following problems: 1. The pressure of the feeding roller on the surface of the fish body cannot be detected in real time in the peeling process, so that the pressure actually acting on the surface of the fish body cannot be obtained, and the problem that excessive removal or removal effect does not reach the standard occurs. 1. The problems that the obtained pressure detection of the feeding roller is distorted and the accurate peeling pressure cannot be obtained due to the deformation of the fish body and uneven viscosity and hardness are not applicable in the peeling process. Disclosure of Invention Therefore, the invention provides a detection method for the roller pressure of the fish peeling machine, which is used for solving the problems that the traditional pressure detection is distorted and the accurate peeling pressure cannot be obtained due to the deformation of fish bodies and uneven mucus and hardness in the prior art. In order to achieve the above object, the present invention provides a method for detecting roller pressure of a fish peeling machine, comprising: Synchronously acquiring a first pressure signal generated when the roller rolls on the surface of the fish body, a dynamic deformation signal of the surface of the fish body, a glossiness signal of the surface of the fish body and an equivalent Young modulus signal; Obtaining a dynamic elastic coefficient based on the dynamic deformation signal to determine whether the deformation of the fish body has an in