An expanded feed production system and method

Abstract

The application discloses a kind of puffed feed production system and production method, it is related to physical sensor field, it solves the problem that existing puffed feed production system exists production quality is not good, including pressure monitoring module: marking a production equipment pressure monitoring period, periodic pressure index monitoring is carried out to the puffed feed production equipment in production equipment pressure monitoring period, according to the periodic pressure change value of monitoring result acquisition, temperature monitoring module: marking a production equipment temperature monitoring period, periodic temperature index monitoring is carried out to the puffed feed production equipment in production equipment temperature monitoring period, according to the periodic temperature change value of monitoring result acquisition, production evaluation module: according to periodic pressure change value and periodic temperature change value, production state anomaly is judged to puffed feed production equipment, and according to the abnormal early warning of judging result is issued, the application can improve production quality and production efficiency.

Description

Technical Field

[0001] This invention belongs to the field of physical sensors and relates to Internet of Things (IoT) technology. Specifically, it is an extruded feed production system and production method. Background Technology

[0002] Existing extruded feed production systems have the following specific deficiencies when monitoring the operational status of extruded feed production equipment:

[0003] 1. Existing extruded feed production systems periodically monitor the temperature of extruded feed production equipment during the production equipment temperature monitoring cycle to obtain the periodic temperature change value. However, they cannot judge the abnormal production status of extruded feed production equipment based on the periodic temperature change value. As a result, the monitoring of the working temperature of extruded feed production equipment lacks comprehensiveness and is prone to production abnormalities.

[0004] 2. Existing extruded feed production systems periodically monitor the pressure of extruded feed production equipment during the production equipment pressure monitoring cycle to obtain the periodic pressure change value. However, they cannot judge the abnormal production status of extruded feed production equipment based on the periodic pressure change value, which can easily lead to fluctuations in product quality.

[0005] Therefore, we propose an extruded feed production system and production method. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the purpose of this invention is to provide an extruded feed production system and method, aiming to improve the production efficiency and quality stability of extruded feed.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: an extruded feed production system, characterized in that it comprises:

[0008] Pressure monitoring module: Marks a pressure monitoring cycle for production equipment, performs periodic pressure index monitoring on extruded feed production equipment during the pressure monitoring cycle, and obtains the periodic pressure change value based on the monitoring results;

[0009] Temperature monitoring module: Marks a temperature monitoring cycle for production equipment, performs periodic temperature index monitoring on the extruded feed production equipment during the production equipment temperature monitoring cycle, and obtains the periodic temperature change value based on the monitoring results;

[0010] Production assessment module: Based on the periodic pressure change value and periodic temperature change value, the module judges the abnormal production status of the extruded feed production equipment and issues anomaly warnings based on the judgment results.

[0011] Furthermore, the periodic pressure change values ​​are obtained, as follows:

[0012] During the monitoring of pressure indicators of extruded feed production equipment, the time point when the extruded feed production equipment starts production is marked as the cycle start time point, the time value corresponding to the current moment is marked as the cycle end time point, and the time interval between the cycle start time point and the cycle end time point is marked as the pressure monitoring cycle of the production equipment.

[0013] Periodic pressure monitoring is conducted on extruded feed production equipment that is in the production equipment pressure monitoring cycle, and the periodic pressure change value corresponding to the extruded feed production equipment is obtained based on the monitoring results.

[0014] Furthermore, the periodic pressure change values ​​are obtained, as follows:

[0015] The pressure monitoring cycle of the production equipment is divided into several pressure monitoring sub-cycles of equal duration, and these sub-cycles are sequentially labeled as Y1 pressure monitoring sub-cycle to Ya pressure monitoring sub-cycle in chronological order.

[0016] Within the Y1 pressure monitoring sub-cycle, several pressure monitoring time points are selected, and these pressure monitoring time points are marked as L1 pressure monitoring time point to Lb pressure monitoring time point in chronological order.

[0017] The pressure values ​​of the sample pressure monitoring sub-regions at the time points from L1 to Lb are obtained respectively, thus obtaining the pressure values ​​from L1 to Lb.

[0018] The periodic pressure change rate of the extruded feed production equipment in the Y1 pressure monitoring sub-cycle is monitored, and the pressure change rate of the Y1 sub-cycle is obtained based on the monitoring results.

[0019] Repeat the process of obtaining the pressure change rate of sub-cycle Y1, and obtain the periodic pressure change rate corresponding to the pressure monitoring sub-cycles from Y2 to Ya respectively, to obtain the pressure change rate of sub-cycle Y2 to Ya.

[0020] The pressure change amplitude of sub-cycle Y1 to the pressure change amplitude of sub-cycle Ya and the average pressure value of sub-cycle Y1 to the average pressure value of sub-cycle Ya are obtained respectively.

[0021] The cycle pressure change value corresponding to the extruded feed production equipment is obtained by calculating the pressure change rate from Y1 sub-cycle pressure change rate to Ya sub-cycle pressure change rate, the average pressure value from Y1 sub-cycle pressure to Ya sub-cycle average pressure value, and the pressure change amplitude from Y1 sub-cycle pressure to Ya sub-cycle pressure change amplitude.

[0022] The formula for calculating the periodic pressure change value corresponding to the extruded feed production equipment is as follows:

[0023] ;

[0024] Wherein, Yyb is the periodic pressure change value corresponding to the extruded feed production equipment, Yhfi is the pressure change amplitude of the Yi sub-cycle, Yjzi is the average pressure value of the Yi sub-cycle, Ybli is the pressure change rate of the Yi sub-cycle, and a is the quantity value corresponding to the pressure monitoring sub-cycle.

[0025] Furthermore, the rate of change of pressure in the Y1 sub-cycle is obtained, as follows:

[0026] Obtain the difference between the pressure value at time L1 and the pressure value at time L2, and take the absolute value of the difference to obtain the pressure deviation for time period L1. Obtain the time difference between the pressure monitoring time point L1 and the pressure monitoring time point L2, and take the absolute value of the difference to obtain the pressure monitoring time difference for time period L1. Calculate the ratio of the pressure deviation for time period L1 to the pressure monitoring time difference for time period L1 to obtain the pressure change rate for time period L1.

[0027] Similarly, the difference between the pressure value at time Lb-1 and the pressure value at time Lb is obtained, and the absolute value of the obtained difference is taken to obtain the pressure deviation for time period Lb-1. The time difference between the pressure monitoring time point Lb-1 and the pressure monitoring time point Lb is obtained, and the absolute value of the obtained difference is taken to obtain the pressure monitoring time difference for time period Lb-1. The ratio of the pressure deviation for time period Lb-1 to the pressure monitoring time difference for time period Lb-1 is calculated to obtain the pressure change rate for time period Lb-1.

[0028] The average pressure change rate during time period L1 and time period Lb-1 is used to calculate the pressure change rate of sub-cycle Y1.

[0029] Furthermore, the pressure variation range from Y1 sub-cycle to Ya sub-cycle, and the average pressure value from Y1 sub-cycle to Ya sub-cycle, are obtained as follows:

[0030] Within the Y1 pressure monitoring sub-cycle, the pressure values ​​from time L1 to time Lb are compared. The pressure value at the time with the largest value is marked as the periodic pressure peak, and the pressure value at the time with the smallest value is marked as the periodic pressure trough. The difference between the periodic pressure peak and the periodic pressure trough is calculated, and the absolute value of the difference is taken to obtain the pressure change amplitude of the Y1 sub-cycle.

[0031] Repeat the process of obtaining the pressure change amplitude of sub-cycle Y1, and obtain the pressure change amplitude of sub-cycles corresponding to pressure monitoring sub-cycles Y2 to Ya respectively, to obtain the pressure change amplitude of sub-cycle Y2 to Ya.

[0032] The average pressure value of the Y1 sub-cycle is calculated by averaging the pressure values ​​from time L1 to time Lb within the Y1 pressure monitoring sub-cycle.

[0033] Repeat the process of obtaining the average pressure value of sub-cycle Y1, and obtain the average pressure values ​​of sub-cycles corresponding to pressure monitoring sub-cycles Y2 to Ya respectively, to obtain the average pressure values ​​of sub-cycles Y2 to Ya.

[0034] Furthermore, the periodic temperature change values ​​are obtained, as follows:

[0035] During the process of monitoring the temperature index of extruded feed production equipment, the time point when the extruded feed production equipment starts production is marked as the cycle start time point, the time value corresponding to the current moment is marked as the cycle end time point, and the time interval between the cycle start time point and the cycle end time point is marked as the temperature monitoring cycle of the production equipment.

[0036] The temperature monitoring cycle of the production equipment is divided into several temperature monitoring sub-cycles of equal duration, and these sub-cycles are sequentially labeled as temperature monitoring sub-cycles W1 to Wc in chronological order.

[0037] Within the W1 temperature monitoring sub-cycle, several temperature monitoring time points are selected, and these temperature monitoring time points are marked in chronological order as P1 temperature monitoring time point to Pd temperature monitoring time point.

[0038] The temperature values ​​of the sample temperature monitoring sub-regions at the corresponding time points from temperature monitoring time point P1 to temperature monitoring time point Pd are obtained respectively, thus obtaining the temperature values ​​from time P1 to time Pd.

[0039] The cycle temperature change rate of the extruded feed production equipment in the W1 temperature monitoring sub-cycle is monitored, and the temperature change rate of the W1 sub-cycle is obtained based on the monitoring results.

[0040] Repeat the process of obtaining the temperature change rate of sub-cycle W1, and obtain the temperature change rate of the cycle corresponding to the temperature monitoring sub-cycles from W2 to Wc respectively, to obtain the temperature change rate of sub-cycle W2 to Wc.

[0041] The average temperature value of sub-cycle W1 is obtained to the average temperature value of sub-cycle Wc, and the temperature change range of sub-cycle W1 is obtained to the temperature change range of sub-cycle Wc, respectively.

[0042] The cycle temperature change value corresponding to the extruded feed production equipment is obtained by calculating the temperature change rate from W1 to Wc, the average temperature value from W1 to Wc, and the temperature change amplitude from W1 to Wc.

[0043] The specific formula for calculating the periodic temperature change value corresponding to the extruded feed production equipment is as follows:

[0044] ;

[0045] Wherein, Wyb is the cycle temperature change value corresponding to the extruded feed production equipment, Whfi is the temperature change amplitude of the Wi sub-cycle, Wjzi is the average temperature value of the Wi sub-cycle, Wbli is the temperature change rate of the Wi sub-cycle, and c is the quantity value corresponding to the temperature monitoring sub-cycle.

[0046] Furthermore, the rate of temperature change in sub-cycle W1 is obtained, as follows:

[0047] Obtain the difference between the temperature value at time P1 and the temperature value at time P2, and take the absolute value of the difference to obtain the temperature deviation during time P1. Obtain the time difference between the temperature monitoring time point P1 and the temperature monitoring time point P2, and take the absolute value of the difference to obtain the temperature monitoring time difference during time P1. Calculate the ratio of the temperature deviation during time P1 to the temperature monitoring time difference during time P1 to obtain the rate of temperature change during time P1.

[0048] Similarly, the difference between the temperature value at time Pd-1 and the temperature value at time Pd is obtained, and the absolute value of the obtained difference is taken to obtain the temperature deviation during the Pd-1 period. The time difference between the temperature monitoring time point of Pd-1 and the temperature monitoring time point of Pd is obtained, and the absolute value of the obtained difference is taken to obtain the temperature monitoring time difference of Pd-1. The ratio of the temperature deviation during the Pd-1 period to the temperature monitoring time difference of Pd-1 is calculated to obtain the temperature change rate during the Pd-1 period.

[0049] The average temperature change rate during period P1 and the temperature change rate during period Pd-1 are calculated to obtain the temperature change rate of sub-cycle W1.

[0050] Furthermore, the average temperature values ​​of sub-cycles W1 and Wc, as well as the temperature variation ranges of sub-cycles W1 and Wc, are obtained as follows:

[0051] Within the W1 temperature monitoring sub-cycle, the temperature values ​​from time P1 to time Pd are compared. The temperature value with the largest value is marked as the periodic temperature peak, and the temperature value with the smallest value is marked as the periodic temperature valley. The difference between the periodic temperature peak and the periodic temperature valley is calculated, and the absolute value of the difference is taken to obtain the temperature change amplitude of the W1 sub-cycle.

[0052] Repeat the process of obtaining the temperature change amplitude of sub-cycle W1, and obtain the temperature change amplitude of the cycle corresponding to the temperature monitoring sub-cycles from W2 to Wc, to obtain the temperature change amplitude of sub-cycle W2 to Wc.

[0053] The average temperature value of the W1 sub-cycle is calculated by averaging the temperature values ​​from time P1 to time Pd within the W1 temperature monitoring sub-cycle.

[0054] Repeat the process of obtaining the average temperature value of sub-cycle W1, and obtain the average temperature values ​​of sub-cycles W2 to Wc respectively, to obtain the average temperature values ​​of sub-cycles W2 to Wc.

[0055] Furthermore, the abnormal production status of the extruded feed production equipment is assessed as follows:

[0056] The periodic pressure change value and the periodic temperature change value are obtained respectively, and the periodic pressure change reference range and the periodic temperature change reference range are obtained respectively.

[0057] If the periodic pressure change value is within the periodic pressure change reference range and the periodic temperature change value is within the periodic temperature change reference range, then the extruded feed production equipment is considered to be in normal production status and no abnormal warning needs to be issued.

[0058] If the periodic pressure change value is not within the periodic pressure change reference range, but the periodic temperature change value is within the periodic temperature change reference range, then the production status of the extruded feed production equipment is judged to be abnormal, and an abnormality warning is issued.

[0059] If the periodic pressure change value is within the periodic pressure change reference range, but the periodic temperature change value is not within the periodic temperature change reference range, then the production status of the extruded feed production equipment is judged to be abnormal, and an abnormality warning is issued.

[0060] If the periodic pressure change value is not within the periodic pressure change reference range, and the periodic temperature change value is not within the periodic temperature change reference range, then the production status of the extruded feed production equipment is judged to be abnormal, and an abnormality warning is issued.

[0061] A method for producing extruded feed includes the following specific steps:

[0062] Step S1: Mark a production equipment pressure monitoring cycle, perform periodic pressure index monitoring on the extruded feed production equipment in the production equipment pressure monitoring cycle, and obtain the periodic pressure change value based on the monitoring results;

[0063] Step S2: Mark a production equipment temperature monitoring cycle, perform periodic temperature index monitoring on the extruded feed production equipment in the production equipment temperature monitoring cycle, and obtain the periodic temperature change value based on the monitoring results;

[0064] Step S3: Based on the periodic pressure change value and periodic temperature change value, determine the abnormal production status of the extruded feed production equipment, and issue an abnormal warning based on the determination result.

[0065] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0066] 1. This invention performs periodic temperature monitoring on extruded feed production equipment during its production equipment temperature monitoring cycle to obtain periodic temperature change values, and judges abnormal production status of the extruded feed production equipment based on the periodic temperature change values. This can improve the comprehensiveness of the extruded feed production equipment's monitoring of working temperature, thereby improving production quality.

[0067] 2. This invention performs periodic pressure index monitoring on extruded feed production equipment that is in the production equipment pressure monitoring cycle to obtain periodic pressure change values, and judges the abnormal production status of extruded feed production equipment based on periodic pressure change values, which can prevent product quality fluctuations, avoid the occurrence of defective products, and thus improve production efficiency. Attached Figure Description

[0068] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0069] Figure 1 This is an overall system block diagram of the present invention;

[0070] Figure 2 This is a diagram illustrating the implementation steps of the present invention. Detailed Implementation

[0071] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0072] Example 1

[0073] Please see Figure 1The extruded feed production equipment of the present invention includes physical sensors, which are connected to a computer via Internet of Things (IoT) technology. The present invention provides a technical solution: an extruded feed production system, including a pressure monitoring module, a temperature monitoring module, a production evaluation module, and a server. The pressure monitoring module, temperature monitoring module, and production evaluation module are respectively connected to the server, and the server controls the pressure monitoring module, temperature monitoring module, and production evaluation module respectively.

[0074] The pressure monitoring module marks a pressure monitoring cycle for production equipment, performs periodic pressure index monitoring on the extruded feed production equipment that is in the pressure monitoring cycle, and obtains the periodic pressure change value based on the monitoring results;

[0075] Specifically as follows:

[0076] During the monitoring of pressure indicators of extruded feed production equipment, the time point when the extruded feed production equipment starts production is marked as the cycle start time point, the time value corresponding to the current moment is marked as the cycle end time point, and the time interval between the cycle start time point and the cycle end time point is marked as the pressure monitoring cycle of the production equipment.

[0077] It should be noted here that:

[0078] The extruded feed production equipment mentioned here is specifically an extrusion chamber. In practical applications, periodic pressure monitoring can be performed on each extruded feed production equipment that requires pressure monitoring. In this application, the extruded feed production equipment mentioned here is specifically a complete set of equipment for producing extruded feed. The extruded feed production equipment mentioned here includes, but is not limited to, the extrusion chamber, the die area, the steam injection point, and the screw end.

[0079] Specifically as follows:

[0080] Periodic pressure monitoring is conducted on extruded feed production equipment that is in the production equipment pressure monitoring cycle, and the periodic pressure change value corresponding to the extruded feed production equipment is obtained based on the monitoring results.

[0081] Specifically as follows:

[0082] The pressure monitoring cycle of the production equipment is divided into several pressure monitoring sub-cycles of equal duration, and these sub-cycles are sequentially labeled as Y1 pressure monitoring sub-cycle to Ya pressure monitoring sub-cycle in chronological order.

[0083] It should be noted here that:

[0084] In this application, Y refers to the symbol corresponding to the pressure monitoring sub-cycle, and a refers to the quantity value corresponding to the pressure monitoring sub-cycle.

[0085] Within the Y1 pressure monitoring sub-cycle, several pressure monitoring time points are selected, and these pressure monitoring time points are marked as L1 pressure monitoring time point to Lb pressure monitoring time point in chronological order.

[0086] It should be noted here that:

[0087] In this application, L refers to the symbol corresponding to the pressure monitoring time point, and b refers to the quantity value corresponding to the pressure monitoring time point.

[0088] The pressure values ​​of the sample pressure monitoring sub-regions at the time points from L1 to Lb are obtained respectively, thus obtaining the pressure values ​​from L1 to Lb.

[0089] The periodic pressure change rate of the extruded feed production equipment in the Y1 pressure monitoring sub-cycle is monitored, and the pressure change rate of the Y1 sub-cycle is obtained based on the monitoring results.

[0090] Specifically as follows:

[0091] Obtain the difference between the pressure value at time L1 and the pressure value at time L2, and take the absolute value of the difference to obtain the pressure deviation for time period L1. Obtain the time difference between the pressure monitoring time point L1 and the pressure monitoring time point L2, and take the absolute value of the difference to obtain the pressure monitoring time difference for time period L1. Calculate the ratio of the pressure deviation for time period L1 to the pressure monitoring time difference for time period L1 to obtain the pressure change rate for time period L1.

[0092] Similarly, the difference between the pressure value at time Lb-1 and the pressure value at time Lb is obtained, and the absolute value of the obtained difference is taken to obtain the pressure deviation for time period Lb-1. The time difference between the pressure monitoring time point Lb-1 and the pressure monitoring time point Lb is obtained, and the absolute value of the obtained difference is taken to obtain the pressure monitoring time difference for time period Lb-1. The ratio of the pressure deviation for time period Lb-1 to the pressure monitoring time difference for time period Lb-1 is calculated to obtain the pressure change rate for time period Lb-1.

[0093] The average pressure change rate during time period L1 and the pressure change rate up to time period Lb-1 are calculated to obtain the pressure change rate of sub-cycle Y1.

[0094] Repeat the process of obtaining the pressure change rate of sub-cycle Y1, and obtain the periodic pressure change rate corresponding to the pressure monitoring sub-cycles from Y2 to Ya respectively, to obtain the pressure change rate of sub-cycle Y2 to Ya.

[0095] Within the Y1 pressure monitoring sub-cycle, the pressure values ​​from time L1 to time Lb are compared. The pressure value at the time with the largest value is marked as the periodic pressure peak, and the pressure value at the time with the smallest value is marked as the periodic pressure trough. The difference between the periodic pressure peak and the periodic pressure trough is calculated, and the absolute value of the difference is taken to obtain the pressure change amplitude of the Y1 sub-cycle.

[0096] Repeat the process of obtaining the pressure change amplitude of sub-cycle Y1, and obtain the pressure change amplitude of sub-cycles corresponding to pressure monitoring sub-cycles Y2 to Ya respectively, to obtain the pressure change amplitude of sub-cycle Y2 to Ya.

[0097] The average pressure value of the Y1 sub-cycle is calculated by averaging the pressure values ​​from time L1 to time Lb within the Y1 pressure monitoring sub-cycle.

[0098] Repeat the process of obtaining the average pressure value of sub-cycle Y1, and obtain the average pressure values ​​of sub-cycles corresponding to pressure monitoring sub-cycles Y2 to Ya respectively, to obtain the average pressure values ​​of sub-cycle Y2 to Ya.

[0099] The cycle pressure change value corresponding to the extruded feed production equipment is obtained by calculating the pressure change rate from Y1 sub-cycle pressure change rate to Ya sub-cycle pressure change rate, the average pressure value from Y1 sub-cycle pressure to Ya sub-cycle average pressure value, and the pressure change amplitude from Y1 sub-cycle pressure to Ya sub-cycle pressure change amplitude.

[0100] The formula for calculating the periodic pressure change value corresponding to the extruded feed production equipment is as follows:

[0101] ;

[0102] Where Yyb is the periodic pressure change value corresponding to the extruded feed production equipment, Yhfi is the pressure change amplitude of Yi sub-cycle, Yjzi is the average pressure value of Yi sub-cycle, Ybli is the pressure change rate of Yi sub-cycle, and a is the quantity value corresponding to the pressure monitoring sub-cycle.

[0103] It should be noted here that:

[0104] The pressure variation range of the Yi sub-cycle involved here can be any one of the pressure variation ranges of the Y1 sub-cycle to the Ya sub-cycle.

[0105] The average pressure value of the Yi sub-cycle involved here can be any one of the average pressure values ​​of the Y1 sub-cycle to the average pressure value of the Ya sub-cycle.

[0106] The Yi sub-cycle pressure change rate mentioned here can be any one of the cycle pressure change rates from the Y1 sub-cycle pressure change rate to the Ya sub-cycle pressure change rate.

[0107] In practice, the following test data exists:

[0108] The measured pressure change amplitude of sub-cycle Y1 is 15 MPa, the average pressure value of sub-cycle Y1 is 65 MPa, and the pressure change rate of sub-cycle Y1 is 0.12. The pressure change amplitude of sub-cycle Y2 is 12 MPa, the average pressure value of sub-cycle Y2 is 75 MPa, and the pressure change rate of sub-cycle Y2 is 0.14. The pressure change amplitude of sub-cycle Y3 is 18 MPa, the average pressure value of sub-cycle Y3 is 75 MPa, and the pressure change rate of sub-cycle Y3 is 0.16. With a = 3, the corresponding periodic pressure change value of the extruded feed production equipment can be calculated to be 75.3 MPa.

[0109] The pressure monitoring module acquires the periodic pressure change values ​​and transmits them to the production assessment module;

[0110] The temperature monitoring module marks a production equipment temperature monitoring cycle, performs periodic temperature index monitoring on the extruded feed production equipment that is in the production equipment temperature monitoring cycle, and obtains the periodic temperature change value based on the monitoring results;

[0111] Specifically as follows:

[0112] During the process of monitoring the temperature index of extruded feed production equipment, the time point when the extruded feed production equipment starts production is marked as the cycle start time point, the time value corresponding to the current moment is marked as the cycle end time point, and the time interval between the cycle start time point and the cycle end time point is marked as the temperature monitoring cycle of the production equipment.

[0113] Periodic temperature monitoring is conducted on extruded feed production equipment that is in the production equipment temperature monitoring cycle, and the corresponding periodic temperature change value of the extruded feed production equipment is obtained based on the monitoring results.

[0114] Specifically as follows:

[0115] The temperature monitoring cycle of the production equipment is divided into several temperature monitoring sub-cycles of equal duration, and these sub-cycles are sequentially labeled as temperature monitoring sub-cycles W1 to Wc in chronological order.

[0116] It should be noted here that:

[0117] In this application, W is the symbol corresponding to the temperature monitoring sub-cycle, and c is the quantity value corresponding to the temperature monitoring sub-cycle.

[0118] Within the W1 temperature monitoring sub-cycle, several temperature monitoring time points are selected, and these temperature monitoring time points are marked in chronological order as P1 temperature monitoring time point to Pd temperature monitoring time point.

[0119] It should be noted here that:

[0120] In this application, P is the symbol corresponding to the temperature monitoring time point, and d is the quantity value corresponding to the temperature monitoring time point.

[0121] The temperature values ​​of the sample temperature monitoring sub-regions at the corresponding time points from temperature monitoring time point P1 to temperature monitoring time point Pd are obtained respectively, thus obtaining the temperature values ​​from time P1 to time Pd.

[0122] The cycle temperature change rate of the extruded feed production equipment in the W1 temperature monitoring sub-cycle is monitored, and the temperature change rate of the W1 sub-cycle is obtained based on the monitoring results.

[0123] Specifically as follows:

[0124] Obtain the difference between the temperature value at time P1 and the temperature value at time P2, and take the absolute value of the difference to obtain the temperature deviation during time P1. Obtain the time difference between the temperature monitoring time point P1 and the temperature monitoring time point P2, and take the absolute value of the difference to obtain the temperature monitoring time difference during time P1. Calculate the ratio of the temperature deviation during time P1 to the temperature monitoring time difference during time P1 to obtain the rate of temperature change during time P1.

[0125] Similarly, the difference between the temperature value at time Pd-1 and the temperature value at time Pd is obtained, and the absolute value of the obtained difference is taken to obtain the temperature deviation during the Pd-1 period. The time difference between the temperature monitoring time point of Pd-1 and the temperature monitoring time point of Pd is obtained, and the absolute value of the obtained difference is taken to obtain the temperature monitoring time difference of Pd-1. The ratio of the temperature deviation during the Pd-1 period to the temperature monitoring time difference of Pd-1 is calculated to obtain the temperature change rate during the Pd-1 period.

[0126] The average temperature change rate of the P1 period and the temperature change rate to the Pd-1 period are calculated to obtain the temperature change rate of the W1 sub-cycle.

[0127] Repeat the process of obtaining the temperature change rate of sub-cycle W1, and obtain the temperature change rate of the cycle corresponding to the temperature monitoring sub-cycles from W2 to Wc respectively, to obtain the temperature change rate of sub-cycle W2 to Wc.

[0128] Within the W1 temperature monitoring sub-cycle, the temperature values ​​from time P1 to time Pd are compared. The temperature value with the largest value is marked as the periodic temperature peak, and the temperature value with the smallest value is marked as the periodic temperature valley. The difference between the periodic temperature peak and the periodic temperature valley is calculated, and the absolute value of the difference is taken to obtain the temperature change amplitude of the W1 sub-cycle.

[0129] Repeat the process of obtaining the temperature change amplitude of sub-cycle W1, and obtain the temperature change amplitude of the cycle corresponding to the temperature monitoring sub-cycles from W2 to Wc, to obtain the temperature change amplitude of sub-cycle W2 to Wc.

[0130] The average temperature value of the W1 sub-cycle is calculated by averaging the temperature values ​​from time P1 to time Pd within the W1 temperature monitoring sub-cycle.

[0131] Repeat the process of obtaining the average temperature value of sub-cycle W1, and obtain the average temperature value of the cycle corresponding to the temperature monitoring sub-cycles W2 to Wc respectively, to obtain the average temperature value of sub-cycle W2 to Wc.

[0132] The cycle temperature change value corresponding to the extruded feed production equipment is obtained by calculating the temperature change rate from W1 to Wc, the average temperature value from W1 to Wc, and the temperature change amplitude from W1 to Wc.

[0133] The specific formula for calculating the periodic temperature change value corresponding to the extruded feed production equipment is as follows:

[0134] ;

[0135] Wherein, Wyb is the cycle temperature change value corresponding to the extruded feed production equipment, Whfi is the temperature change amplitude of the Wi sub-cycle, Wjzi is the average temperature value of the Wi sub-cycle, Wbli is the temperature change rate of the Wi sub-cycle, and c is the quantity value corresponding to the temperature monitoring sub-cycle.

[0136] It should be noted here that:

[0137] The temperature variation range of the Wi sub-cycle involved here can be any one of the temperature variation ranges from the temperature variation range of the W1 sub-cycle to the temperature variation range of the Wc sub-cycle.

[0138] The average temperature value of the Wi sub-cycle involved here can be any one of the average temperature values ​​of the W1 sub-cycle to the Wc sub-cycle.

[0139] The rate of temperature change of the Wi sub-cycle involved here can be any one of the rate of temperature change of the W1 sub-cycle to the rate of temperature change of the Wc sub-cycle.

[0140] In practice, the following test data exists:

[0141] The measured temperature variation range of sub-cycle W1 is 15℃, the average temperature value of sub-cycle W1 is 75℃, and the temperature change rate of sub-cycle W1 is 0.16. The temperature variation range of sub-cycle W2 is 12℃, the average temperature value of sub-cycle W2 is 65℃, and the temperature change rate of sub-cycle W2 is 0.14. The temperature variation range of sub-cycle W3 is 18℃, the average temperature value of sub-cycle W3 is 85℃, and the temperature change rate of sub-cycle W3 is 0.16. With c = 3, the corresponding cycle temperature variation value of the extruded feed production equipment can be calculated to be 26.57℃.

[0142] The temperature monitoring module acquires the periodic temperature change values ​​and transmits them to the production evaluation module;

[0143] The production assessment module judges the abnormal production status of the extruded feed production equipment based on the periodic pressure change value and the periodic temperature change value, and issues an abnormal warning based on the judgment result;

[0144] Specifically as follows:

[0145] The periodic pressure change value and the periodic temperature change value are obtained respectively, and the periodic pressure change reference range and the periodic temperature change reference range are obtained respectively.

[0146] It should be noted here that:

[0147] The baseline range for cyclical pressure changes is obtained as follows:

[0148] Several historical cycles of extruded feed production equipment in normal production status are obtained. The cycle pressure change value corresponding to each historical cycle is obtained. The numerical values ​​of the multiple cycle pressure change values ​​are compared. The cycle pressure change value with the largest value is marked as the upper limit of the cycle pressure change reference interval, and the cycle pressure change value with the smallest value is marked as the lower limit of the cycle pressure change reference interval, thus obtaining the cycle pressure change reference interval.

[0149] The baseline range for periodic temperature changes is obtained as follows:

[0150] Several historical cycles of extruded feed production equipment in normal production status are obtained. The cycle temperature change value corresponding to each historical cycle is obtained. The numerical values ​​of the multiple cycle temperature change values ​​are compared. The cycle temperature change value with the largest value is marked as the upper limit of the cycle temperature change reference interval, and the cycle temperature change value with the smallest value is marked as the lower limit of the cycle temperature change reference interval, thus obtaining the cycle temperature change reference interval.

[0151] If the periodic pressure change value is within the periodic pressure change reference range and the periodic temperature change value is within the periodic temperature change reference range, then the extruded feed production equipment is considered to be in normal production status and no abnormal warning needs to be issued.

[0152] If the periodic pressure change value is not within the periodic pressure change reference range, but the periodic temperature change value is within the periodic temperature change reference range, then the production status of the extruded feed production equipment is judged to be abnormal, and an abnormality warning is issued.

[0153] If the periodic pressure change value is within the periodic pressure change reference range, but the periodic temperature change value is not within the periodic temperature change reference range, then the production status of the extruded feed production equipment is judged to be abnormal, and an abnormality warning is issued.

[0154] If the periodic pressure change value is not within the periodic pressure change reference range, and the periodic temperature change value is not within the periodic temperature change reference range, then the production status of the extruded feed production equipment is judged to be abnormal, and an abnormality warning is issued.

[0155] It should be noted here that:

[0156] The normal production status of extruded feed production equipment includes the boundary of the periodic pressure change reference range and the boundary of the periodic temperature change reference range.

[0157] In this application, if a corresponding calculation formula appears, the above calculation formula is a dimensionless calculation. The weighting coefficient, proportional coefficient and other coefficients in the formula are set to quantify each parameter to obtain a result value. The size of the weighting coefficient and proportional coefficient is only required to not affect the proportional relationship between the parameter and the result value.

[0158] Example 2

[0159] Please see Figure 2 Based on another concept of the same invention, a method for producing extruded feed is now proposed, the method comprising the following steps:

[0160] Step S1: Mark a production equipment pressure monitoring cycle, perform periodic pressure index monitoring on the extruded feed production equipment in the production equipment pressure monitoring cycle, and obtain the periodic pressure change value based on the monitoring results;

[0161] Step S1 further includes the following specific steps:

[0162] During the monitoring of pressure indicators of extruded feed production equipment, the time point when the extruded feed production equipment starts production is marked as the cycle start time point, the time value corresponding to the current moment is marked as the cycle end time point, and the time interval between the cycle start time point and the cycle end time point is marked as the pressure monitoring cycle of the production equipment.

[0163] Periodic pressure monitoring is conducted on extruded feed production equipment that is in the production equipment pressure monitoring cycle, and the periodic pressure change value corresponding to the extruded feed production equipment is obtained based on the monitoring results.

[0164] Specifically as follows:

[0165] The pressure monitoring cycle of the production equipment is divided into several pressure monitoring sub-cycles of equal duration, and these sub-cycles are sequentially labeled as Y1 pressure monitoring sub-cycle to Ya pressure monitoring sub-cycle in chronological order.

[0166] Within the Y1 pressure monitoring sub-cycle, several pressure monitoring time points are selected, and these pressure monitoring time points are marked as L1 pressure monitoring time point to Lb pressure monitoring time point in chronological order.

[0167] The pressure values ​​of the sample pressure monitoring sub-regions at the time points from L1 to Lb are obtained respectively, thus obtaining the pressure values ​​from L1 to Lb.

[0168] The periodic pressure change rate of the extruded feed production equipment in the Y1 pressure monitoring sub-cycle is monitored, and the pressure change rate of the Y1 sub-cycle is obtained based on the monitoring results.

[0169] Specifically as follows:

[0170] Obtain the difference between the pressure value at time L1 and the pressure value at time L2, and take the absolute value of the difference to obtain the pressure deviation for time period L1. Obtain the time difference between the pressure monitoring time point L1 and the pressure monitoring time point L2, and take the absolute value of the difference to obtain the pressure monitoring time difference for time period L1. Calculate the ratio of the pressure deviation for time period L1 to the pressure monitoring time difference for time period L1 to obtain the pressure change rate for time period L1.

[0171] Similarly, the difference between the pressure value at time Lb-1 and the pressure value at time Lb is obtained, and the absolute value of the obtained difference is taken to obtain the pressure deviation for time period Lb-1. The time difference between the pressure monitoring time point Lb-1 and the pressure monitoring time point Lb is obtained, and the absolute value of the obtained difference is taken to obtain the pressure monitoring time difference for time period Lb-1. The ratio of the pressure deviation for time period Lb-1 to the pressure monitoring time difference for time period Lb-1 is calculated to obtain the pressure change rate for time period Lb-1.

[0172] The average pressure change rate during time period L1 and the pressure change rate up to time period Lb-1 are calculated to obtain the pressure change rate of sub-cycle Y1.

[0173] Repeat the process of obtaining the pressure change rate of sub-cycle Y1, and obtain the periodic pressure change rate corresponding to the pressure monitoring sub-cycles from Y2 to Ya respectively, to obtain the pressure change rate of sub-cycle Y2 to Ya.

[0174] Within the Y1 pressure monitoring sub-cycle, the pressure values ​​from time L1 to time Lb are compared. The pressure value at the time with the largest value is marked as the periodic pressure peak, and the pressure value at the time with the smallest value is marked as the periodic pressure trough. The difference between the periodic pressure peak and the periodic pressure trough is calculated, and the absolute value of the difference is taken to obtain the pressure change amplitude of the Y1 sub-cycle.

[0175] Repeat the process of obtaining the pressure change amplitude of sub-cycle Y1, and obtain the pressure change amplitude of sub-cycles corresponding to pressure monitoring sub-cycles Y2 to Ya respectively, to obtain the pressure change amplitude of sub-cycle Y2 to Ya.

[0176] The average pressure value of the Y1 sub-cycle is calculated by averaging the pressure values ​​from time L1 to time Lb within the Y1 pressure monitoring sub-cycle.

[0177] Repeat the process of obtaining the average pressure value of sub-cycle Y1, and obtain the average pressure values ​​of sub-cycles corresponding to pressure monitoring sub-cycles Y2 to Ya respectively, to obtain the average pressure values ​​of sub-cycle Y2 to Ya.

[0178] The cycle pressure change value corresponding to the extruded feed production equipment is obtained by calculating the pressure change rate from Y1 sub-cycle pressure change rate to Ya sub-cycle pressure change rate, the average pressure value from Y1 sub-cycle pressure to Ya sub-cycle average pressure value, and the pressure change amplitude from Y1 sub-cycle pressure to Ya sub-cycle pressure change amplitude.

[0179] The formula for calculating the periodic pressure change value corresponding to the extruded feed production equipment is as follows:

[0180] ;

[0181] Where Yyb is the periodic pressure change value corresponding to the extruded feed production equipment, Yhfi is the pressure change amplitude of Yi sub-cycle, Yjzi is the average pressure value of Yi sub-cycle, Ybli is the pressure change rate of Yi sub-cycle, and a is the quantity value corresponding to the pressure monitoring sub-cycle.

[0182] Step S2: Mark a production equipment temperature monitoring cycle, perform periodic temperature index monitoring on the extruded feed production equipment in the production equipment temperature monitoring cycle, and obtain the periodic temperature change value based on the monitoring results;

[0183] Step S2 further includes the following specific steps:

[0184] During the process of monitoring the temperature index of extruded feed production equipment, the time point when the extruded feed production equipment starts production is marked as the cycle start time point, the time value corresponding to the current moment is marked as the cycle end time point, and the time interval between the cycle start time point and the cycle end time point is marked as the temperature monitoring cycle of the production equipment.

[0185] Periodic temperature monitoring is conducted on extruded feed production equipment that is in the production equipment temperature monitoring cycle, and the corresponding periodic temperature change value of the extruded feed production equipment is obtained based on the monitoring results.

[0186] Specifically as follows:

[0187] The temperature monitoring cycle of the production equipment is divided into several temperature monitoring sub-cycles of equal duration, and these sub-cycles are sequentially labeled as temperature monitoring sub-cycles W1 to Wc in chronological order.

[0188] Within the W1 temperature monitoring sub-cycle, several temperature monitoring time points are selected, and these temperature monitoring time points are marked in chronological order as P1 temperature monitoring time point to Pd temperature monitoring time point.

[0189] The temperature values ​​of the sample temperature monitoring sub-regions at the corresponding time points from temperature monitoring time point P1 to temperature monitoring time point Pd are obtained respectively, thus obtaining the temperature values ​​from time P1 to time Pd.

[0190] The cycle temperature change rate of the extruded feed production equipment in the W1 temperature monitoring sub-cycle is monitored, and the temperature change rate of the W1 sub-cycle is obtained based on the monitoring results.

[0191] Specifically as follows:

[0192] Obtain the difference between the temperature value at time P1 and the temperature value at time P2, and take the absolute value of the difference to obtain the temperature deviation during time P1. Obtain the time difference between the temperature monitoring time point P1 and the temperature monitoring time point P2, and take the absolute value of the difference to obtain the temperature monitoring time difference during time P1. Calculate the ratio of the temperature deviation during time P1 to the temperature monitoring time difference during time P1 to obtain the rate of temperature change during time P1.

[0193] Similarly, the difference between the temperature value at time Pd-1 and the temperature value at time Pd is obtained, and the absolute value of the obtained difference is taken to obtain the temperature deviation during the Pd-1 period. The time difference between the temperature monitoring time point of Pd-1 and the temperature monitoring time point of Pd is obtained, and the absolute value of the obtained difference is taken to obtain the temperature monitoring time difference of Pd-1. The ratio of the temperature deviation during the Pd-1 period to the temperature monitoring time difference of Pd-1 is calculated to obtain the temperature change rate during the Pd-1 period.

[0194] The average temperature change rate of the P1 period and the temperature change rate to the Pd-1 period are calculated to obtain the temperature change rate of the W1 sub-cycle.

[0195] Repeat the process of obtaining the temperature change rate of sub-cycle W1, and obtain the temperature change rate of the cycle corresponding to the temperature monitoring sub-cycles from W2 to Wc respectively, to obtain the temperature change rate of sub-cycle W2 to Wc.

[0196] Within the W1 temperature monitoring sub-cycle, the temperature values ​​from time P1 to time Pd are compared. The temperature value with the largest value is marked as the periodic temperature peak, and the temperature value with the smallest value is marked as the periodic temperature valley. The difference between the periodic temperature peak and the periodic temperature valley is calculated, and the absolute value of the difference is taken to obtain the temperature change amplitude of the W1 sub-cycle.

[0197] Repeat the process of obtaining the temperature change amplitude of sub-cycle W1, and obtain the temperature change amplitude of the cycle corresponding to the temperature monitoring sub-cycles from W2 to Wc, to obtain the temperature change amplitude of sub-cycle W2 to Wc.

[0198] The average temperature value of the W1 sub-cycle is calculated by averaging the temperature values ​​from time P1 to time Pd within the W1 temperature monitoring sub-cycle.

[0199] Repeat the process of obtaining the average temperature value of sub-cycle W1, and obtain the average temperature value of the cycle corresponding to the temperature monitoring sub-cycles W2 to Wc respectively, to obtain the average temperature value of sub-cycle W2 to Wc.

[0200] The cycle temperature change value corresponding to the extruded feed production equipment is obtained by calculating the temperature change rate from W1 to Wc, the average temperature value from W1 to Wc, and the temperature change amplitude from W1 to Wc.

[0201] The specific formula for calculating the periodic temperature change value corresponding to the extruded feed production equipment is as follows:

[0202] ;

[0203] Wherein, Wyb is the cycle temperature change value corresponding to the extruded feed production equipment, Whfi is the temperature change amplitude of the Wi sub-cycle, Wjzi is the average temperature value of the Wi sub-cycle, Wbli is the temperature change rate of the Wi sub-cycle, and c is the quantity value corresponding to the temperature monitoring sub-cycle.

[0204] The temperature monitoring module acquires the periodic temperature change values ​​and transmits them to the production evaluation module;

[0205] Step S3: Based on the periodic pressure change value and periodic temperature change value, determine the abnormal production status of the extruded feed production equipment, and issue an abnormal warning based on the determination result;

[0206] Step S3 further includes the following specific steps:

[0207] The periodic pressure change value and the periodic temperature change value are obtained respectively, and the periodic pressure change reference range and the periodic temperature change reference range are obtained respectively.

[0208] If the periodic pressure change value is within the periodic pressure change reference range and the periodic temperature change value is within the periodic temperature change reference range, then the extruded feed production equipment is considered to be in normal production status and no abnormal warning needs to be issued.

[0209] If the periodic pressure change value is not within the periodic pressure change reference range, but the periodic temperature change value is within the periodic temperature change reference range, then the production status of the extruded feed production equipment is judged to be abnormal, and an abnormality warning is issued.

[0210] If the periodic pressure change value is within the periodic pressure change reference range, but the periodic temperature change value is not within the periodic temperature change reference range, then the production status of the extruded feed production equipment is judged to be abnormal, and an abnormality warning is issued.

[0211] If the periodic pressure change value is not within the periodic pressure change reference range, and the periodic temperature change value is not within the periodic temperature change reference range, then the production status of the extruded feed production equipment is judged to be abnormal, and an abnormality warning is issued.

[0212] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An extruded feed production system, characterized in that, include: Pressure monitoring module: Sets a pressure monitoring cycle and divides it into multiple sub-cycles. Selects multiple time points within each sub-cycle and acquires pressure values. Calculates the ratio of pressure deviation between time points to time difference to obtain the pressure change rate for the time period, and takes the average value as the pressure change rate for the corresponding sub-cycle. Compares the pressure values ​​at time points to determine the pressure peak and trough values ​​of the sub-cycle, calculates the absolute value of their difference as the pressure change amplitude of the sub-cycle, and calculates the average pressure value within the sub-cycle as the average pressure value of the sub-cycle. Based on the pressure change amplitude of the sub-cycle, the average pressure value of the sub-cycle, and the pressure change rate of the sub-cycle, the periodic pressure change value of the pressure monitoring cycle is calculated. The periodic pressure change values ​​are obtained as follows: The pressure monitoring cycle of production equipment is divided into pressure monitoring sub-cycles Y1 to Ya; Within the Y1 pressure monitoring sub-cycle, the pressure monitoring time points from L1 to Lb are selected; The pressure values ​​of the sample pressure monitoring sub-regions at the time points from L1 to Lb are obtained respectively, thus obtaining the pressure values ​​from L1 to Lb. The periodic pressure change rate of the extruded feed production equipment in the Y1 pressure monitoring sub-cycle is monitored, and the pressure change rate of the Y1 sub-cycle is obtained based on the monitoring results. The rate of change of periodic pressure corresponding to the Y2 pressure monitoring sub-cycle to the Ya pressure monitoring sub-cycle is obtained respectively, and the rate of change of pressure from the Y2 sub-cycle to the Ya sub-cycle is obtained. The pressure change amplitude of sub-cycle Y1 to the pressure change amplitude of sub-cycle Ya and the average pressure value of sub-cycle Y1 to the average pressure value of sub-cycle Ya are obtained respectively. The periodic pressure change value corresponding to the extruded feed production equipment is calculated using the following formula: ； Where Yyb is the periodic pressure change value corresponding to the extruded feed production equipment, Yhfi is the pressure change amplitude of Yi sub-cycle, Yjzi is the average pressure value of Yi sub-cycle, Ybli is the pressure change rate of Yi sub-cycle, and a is the quantity value corresponding to the pressure monitoring sub-cycle. Temperature monitoring module: Set the temperature monitoring period and divide it into multiple sub-periods. Select multiple time points within each sub-period to obtain temperature values. Calculate the ratio of the temperature deviation between time points to the time difference to obtain the temperature change rate for the time period. Take the average value as the temperature change rate for the corresponding sub-period. Compare the temperature values ​​at the time points to determine the temperature peak and valley values ​​of the sub-period. Calculate the absolute value of their difference as the temperature change amplitude of the sub-period. At the same time, calculate the average of the temperature values ​​within the sub-period as the average temperature value of the sub-period. Based on the temperature change amplitude of the sub-period, the average temperature value of the sub-period, and the temperature change rate of the sub-period, calculate the periodic temperature change value of the temperature monitoring period. The periodic temperature change values ​​are obtained as follows: During the temperature monitoring of extruded feed production equipment, a temperature monitoring cycle for the production equipment is marked. The temperature monitoring cycle of the production equipment is divided into temperature monitoring sub-cycles W1 to Wc. Within the W1 temperature monitoring sub-cycle, the time points are marked as P1 temperature monitoring time point to Pd temperature monitoring time point respectively; The temperature values ​​of the sample temperature monitoring sub-regions at the corresponding time points from temperature monitoring time point P1 to temperature monitoring time point Pd are obtained respectively, thus obtaining the temperature values ​​from time P1 to time Pd. The cycle temperature change rate of the extruded feed production equipment in the W1 temperature monitoring sub-cycle is monitored, and the temperature change rate of the W1 sub-cycle is obtained based on the monitoring results. The rate of change of the periodic temperature corresponding to the temperature monitoring sub-cycle from W2 to Wc is obtained respectively, and the rate of change of the temperature in the W2 sub-cycle is obtained to the rate of change of the temperature in the Wc sub-cycle. The average temperature value of sub-cycle W1 is obtained to the average temperature value of sub-cycle Wc, and the temperature change range of sub-cycle W1 is obtained to the temperature change range of sub-cycle Wc, respectively. The calculated periodic temperature change value for the extruded feed production equipment is as follows: ； Wherein, Wyb is the cycle temperature change value corresponding to the extruded feed production equipment, Whfi is the temperature change amplitude of the Wi sub-cycle, Wjzi is the average temperature value of the Wi sub-cycle, Wbli is the temperature change rate of the Wi sub-cycle, and c is the quantity value corresponding to the temperature monitoring sub-cycle. Production assessment module: Based on the periodic pressure change value and periodic temperature change value, the module judges the abnormal production status of the extruded feed production equipment and issues anomaly warnings based on the judgment results.

2. The extruded feed production system according to claim 1, characterized in that, The rate of change of pressure in the Y1 sub-cycle is obtained as follows: Obtain the difference between the pressure value at time L1 and the pressure value at time L2, and take the absolute value of the difference to obtain the pressure deviation for time period L1. Obtain the time difference between the pressure monitoring time point L1 and the pressure monitoring time point L2, and take the absolute value of the difference to obtain the pressure monitoring time difference for time period L1. Calculate the ratio of the pressure deviation for time period L1 to the pressure monitoring time difference for time period L1 to obtain the pressure change rate for time period L1. Similarly, the difference between the pressure value at time Lb-1 and the pressure value at time Lb is obtained, and the absolute value of the obtained difference is taken to obtain the pressure deviation for time period Lb-1. The time difference between the pressure monitoring time point Lb-1 and the pressure monitoring time point Lb is obtained, and the absolute value of the obtained difference is taken to obtain the pressure monitoring time difference for time period Lb-1. The ratio of the pressure deviation for time period Lb-1 to the pressure monitoring time difference for time period Lb-1 is calculated to obtain the pressure change rate for time period Lb-1. The average pressure change rate from time L1 to time Lb-1 is calculated to obtain the pressure change rate of sub-cycle Y1.

3. The extruded feed production system according to claim 1, characterized in that, The periodic pressure variation amplitude and the periodic average pressure value are obtained as follows: Within the Y1 pressure monitoring sub-cycle, the pressure values ​​from time L1 to time Lb are compared. The pressure value at the time with the largest value is marked as the periodic pressure peak, and the pressure value at the time with the smallest value is marked as the periodic pressure trough. The difference between the periodic pressure peak and the periodic pressure trough is calculated, and the absolute value of the difference is taken to obtain the pressure change amplitude of the Y1 sub-cycle. The periodic pressure change amplitudes corresponding to the Y2 pressure monitoring sub-cycle and the Ya pressure monitoring sub-cycle are obtained respectively, thus obtaining the periodic pressure change amplitude from the Y2 sub-cycle to the Ya sub-cycle pressure change amplitude; The average pressure value of the Y1 sub-cycle is calculated by averaging the pressure values ​​from time L1 to time Lb within the Y1 pressure monitoring sub-cycle. The periodic average pressure values ​​corresponding to the pressure monitoring sub-cycles from Y2 to Ya are obtained respectively, thus obtaining the periodic average pressure values ​​from Y2 to Ya sub-cycle average pressure values.

4. The extruded feed production system according to claim 1, characterized in that, The rate of temperature change in sub-cycle W1 is obtained as follows: Obtain the difference between the temperature value at time P1 and the temperature value at time P2, and take the absolute value of the difference to obtain the temperature deviation during time P1. Obtain the time difference between the temperature monitoring time point P1 and the temperature monitoring time point P2, and take the absolute value of the difference to obtain the temperature monitoring time difference during time P1. Calculate the ratio of the temperature deviation during time P1 to the temperature monitoring time difference during time P1 to obtain the rate of temperature change during time P1. Similarly, the difference between the temperature value at time Pd-1 and the temperature value at time Pd is obtained, and the absolute value of the obtained difference is taken to obtain the temperature deviation during the Pd-1 period. The time difference between the temperature monitoring time point of Pd-1 and the temperature monitoring time point of Pd is obtained, and the absolute value of the obtained difference is taken to obtain the temperature monitoring time difference of Pd-1. The ratio of the temperature deviation during the Pd-1 period to the temperature monitoring time difference of Pd-1 is calculated to obtain the temperature change rate during the Pd-1 period. The average temperature change rate from time period P1 to time period Pd-1 is calculated to obtain the temperature change rate of sub-cycle W1.

5. The extruded feed production system according to claim 1, characterized in that, The average temperature values ​​from sub-cycle W1 to sub-cycle Wc, as well as the temperature variation ranges from sub-cycle W1 to sub-cycle Wc, are obtained as follows: Within the W1 temperature monitoring sub-cycle, the temperature values ​​from time P1 to time Pd are compared. The temperature value with the largest value is marked as the periodic temperature peak, and the temperature value with the smallest value is marked as the periodic temperature valley. The difference between the periodic temperature peak and the periodic temperature valley is calculated, and the absolute value of the difference is taken to obtain the temperature change amplitude of the W1 sub-cycle. The temperature change amplitudes corresponding to the temperature monitoring sub-cycles from W2 to Wc are obtained respectively, thus obtaining the temperature change amplitudes from the W2 sub-cycle to the Wc sub-cycle. Within the W1 temperature monitoring sub-cycle, the average temperature value from time P1 to time Pd is calculated to obtain the W1 sub-cycle average temperature value. The average temperature values ​​of the periods corresponding to the temperature monitoring sub-cycles from W2 to Wc are obtained respectively, thus obtaining the average temperature values ​​of the W2 sub-cycle to the Wc sub-cycle.

6. The extruded feed production system according to claim 1, characterized in that, The following are the specific steps for determining abnormal production status of extruded feed production equipment: The periodic pressure change value and the periodic temperature change value are obtained respectively, and the periodic pressure change reference range and the periodic temperature change reference range are obtained respectively. If the periodic pressure change value is within the periodic pressure change reference range and the periodic temperature change value is within the periodic temperature change reference range, then the extruded feed production equipment is considered to be in normal production status and no abnormal warning needs to be issued. If the periodic pressure change value is not within the periodic pressure change reference range, but the periodic temperature change value is within the periodic temperature change reference range, then the production status of the extruded feed production equipment is judged to be abnormal, and an abnormality warning is issued. If the periodic pressure change value is within the periodic pressure change reference range, but the periodic temperature change value is not within the periodic temperature change reference range, then the production status of the extruded feed production equipment is judged to be abnormal, and an abnormality warning is issued. If the periodic pressure change value is not within the periodic pressure change reference range, and the periodic temperature change value is not within the periodic temperature change reference range, then the production status of the extruded feed production equipment is judged to be abnormal, and an abnormality warning is issued.

7. A method for producing extruded feed, applicable to the extruded feed production system described in any one of claims 1-6, characterized in that, The production method includes: Step S1: Mark a production equipment pressure monitoring cycle, perform periodic pressure index monitoring on the extruded feed production equipment in the production equipment pressure monitoring cycle, and obtain the periodic pressure change value based on the monitoring results; Step S2: Mark a production equipment temperature monitoring cycle, perform periodic temperature index monitoring on the extruded feed production equipment in the production equipment temperature monitoring cycle, and obtain the periodic temperature change value based on the monitoring results; Step S3: Based on the periodic pressure change value and periodic temperature change value, determine the abnormal production status of the extruded feed production equipment, and issue an abnormal warning based on the determination result.

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