A system and method for intelligent control of access to a storage cabinet

Abstract

The application discloses a system and method for intelligently controlling the access of storage cabinets, which comprises a feeder, an electronic belt scale, an upstream conveyor belt, a downstream conveyor belt, a belt-type distributing vehicle, an ultrasonic sensor, at least one cabinet-out storage cabinet, at least one cabinet-in storage cabinet, a limiting tube and a control module. According to the cabinet-in mode of the cabinet-in storage cabinet and the difference between the cumulative weights of materials in unit time measured by the electronic belt scale, the weight of the material entering the cabinet-in storage cabinet is calculated, so that the measurement of the weight of the material entering the cabinet-in storage cabinet is not affected by external conditions such as the failure of the electronic belt scale and data fluctuation. The head stage, production stage and tail stage of the discharging process are automatically set according to the actual situation and demand of each stage, the actual situation and demand are integrated into a formula, the running frequency of the bottom belt of the upstream conveyor belt and the cabinet-out storage cabinet in each stage is automatically set, and the feeding gear of the feeder is automatically set.

Description

Technical Field

[0001] This invention relates to the field of cable system diagnostic technology, specifically to a cable aging condition testing method, medium, equipment, terminal, and evaluation system. Background Technology

[0002] Currently, the feeding and discharging of the storage tanks in the silk production line are manually controlled by operators in the central control room. In most cases, only one or two operators are in the control room, and each operator needs to adjust the operating frequency of the conveyor belt and bottom belt at the beginning, production, and end stages of the feeding process. They also need to monitor the equipment's operating status during the feeding process. The workload is heavy and the error rate is high.

[0003] In the existing technology, the weight of materials entering the storage tank is calculated by an electronic belt scale. That is, the weight of materials entering the storage tank is equal to the weight measured by the electronic belt scale. When there are fluctuations in power grid pressure or noise interference on site, causing the data uploaded by the electronic belt scale to jump, the system may misjudge the weight of the materials in the storage tank as a full condition, causing the equipment to stop running. Alternatively, if the electronic belt scale malfunctions and stops, the system may mistakenly think that the weight of the materials in the storage tank is zero, resulting in system failure and greatly affecting production.

[0004] In the prior art, there is a patent entitled "Automatic Control Method for Storage Tank Conveyor Bottom Belt," with application number CN202210706026.2. This patent provides an automatic control method for storage tank conveyor bottom belt that aims to improve production efficiency, reduce the labor intensity of manual operation, and realize intelligent and automated control of storage tanks. This patent only considers the control of the conveyor bottom belt, but it cannot determine the remaining material in the storage tank in real time.

[0005] Based on a comprehensive comparison of the documents, the applicant found that the existing technology is affected by issues such as data fluctuations and malfunctions of the electronic belt scale, and that the level of automation in the existing technology is not high, requiring many steps to be performed manually during the process of entering and leaving the storage tank. Summary of the Invention

[0006] To address the problems existing in the prior art, this invention provides a system and method for intelligently controlling the entry and exit of storage tanks, which is unaffected by electronic belt scale malfunctions and data fluctuations, and improves the automation level of the silk production line.

[0007] First of all, it should be noted that the storage tank in this invention can both discharge and receive materials. When discharging materials, the storage tank is an discharge storage tank, and when receiving materials, the storage tank is a receiving storage tank.

[0008] The present invention adopts the following technical solution:

[0009] Firstly, a method for intelligently controlling access to and from a storage cabinet, the method comprising:

[0010] S1. Set the process production order and material intake percentage for this storage cabinet entry / exit;

[0011] S2. Select the storage tank for entering the storage tank, the storage tank for exiting the storage tank, and the storage method for entering the storage tank according to the storage tank information, the percentage of material entering the storage tank, and the production work order;

[0012] S3. Enter the pre-filling stage. The feeder, upstream conveyor belt, and bottom belt of the outgoing storage tank are turned on in sequence to prepare materials for the feeder. The downstream conveyor belt, bottom belt of the ingoing storage tank, material distribution vehicle, processing equipment, and preheating equipment are turned on in sequence.

[0013] S4. When the feeder has finished preparing the material, turn on the electronic belt scale to enter the production stage; and simultaneously execute steps S5 and S6.

[0014] S5. The container starts discharging material. When there is no material on the upstream conveyor belt and the storage percentage is 0%, the upstream conveyor belt and the bottom belt of the container stop.

[0015] S6. When the storage tank starts feeding, if the downstream conveyor belt, feeder, limiting tube and processing equipment in the production stage are all out of material, the downstream conveyor belt, feeder, limiting tube and processing equipment will be stopped after a delay.

[0016] S7. When all equipment is shut down, update the storage information of the storage cabinets according to the production work order of the process.

[0017] The methods of cabinet entry include entering a pair of cabinets or entering a single cabinet.

[0018] Furthermore, the production work order for the process includes the production batch, brand, and batch feed weight, and the storage tank information includes the production batch, brand, weight, and storage time.

[0019] Furthermore, step S2 further includes the following steps:

[0020] Based on the storage tank information, select the storage tank with the same production batch and release number as the release storage tank from the storage tanks to be released;

[0021] The method of placing materials into the storage cabinet is determined by comparing the value of the single batch feeding quantity in the production work order with the value of the storage cabinet weight multiplied by the feeding percentage in the storage cabinet information. Empty cabinets that have not been put into use are selected from the storage cabinets to be placed into the storage cabinet.

[0022] Furthermore, before entering the pre-filling stage, it is necessary to set the material tail percentage and increase the operating frequency of the bottom belt of the storage tank and the upstream conveyor belt to 50Hz to quickly pull out the material until the discharge state becomes the material head stage. The discharge state includes the material head stage, the production stage, and the material tail stage. The material head stage is when the material tail photocell is not blocked; the production stage is when the material tail photocell is blocked and the storage percentage is greater than the material tail percentage; the material tail stage is when the storage percentage is less than the material tail percentage.

[0023] The method for calculating the percentage of stored material is as follows:

[0024] Calculate the single-pulse discharge percentage: This is the ratio of the bottom strip discharge length of the storage tank to the total length of the storage tank when the encoder detects a single pulse.

[0025] Calculate the feed percentage; it is the ratio of the weight of the material currently out of the container to the weight of the material when the container is full.

[0026] Calculate the storage percentage: The initial storage percentage is equal to the percentage of material fed into the storage tank during the last feeding. Each time a falling edge of the encoder is received, the storage percentage is subtracted from the single-pulse feeding percentage to obtain the new storage percentage.

[0027] In calculating the storage percentage, it is also necessary to dynamically adjust the value of the storage percentage based on the actual site conditions.

[0028] When half of the photocell is exposed, set the storage percentage to 50%.

[0029] When the photocell with material is not exposed, set the material storage percentage to the percentage of the photocell with material.

[0030] When the tail material photocell is exposed, the storage percentage is set to 0%.

[0031] Furthermore, step S5 further includes the following steps:

[0032] S51: Set the basic parameters of the storage cabinet;

[0033] S52: Calculate the production frequency and run the bottom belt of the storage tank at the production frequency. Adjust the running frequency of the bottom belt of the storage tank and the frequency of the upstream conveyor belt according to the material storage status of the limit tube of the electronic belt scale.

[0034] S53: Determine if it is the material tail stage. If so, increase the running frequency of the bottom belt to 50HZ. When there is no material on the upstream conveyor belt and the storage percentage is 0%, stop the upstream conveyor belt and the bottom belt of the out-of-cabinet storage tank.

[0035] The basic parameters include the weight of the full container of materials, the percentage of the photocell with material, the single pulse discharge length, the deceleration interval time, the deceleration frequency step size, the acceleration interval time, and the acceleration frequency step size.

[0036] Furthermore, in step S52, the production frequency calculation process is as follows:

[0037] When the storage method is single-cabinet storage, according to Formula 1:

[0038]

[0039] Calculate the production frequency F when entering and leaving a single cabinet. sc1 , where F sc1 Q represents the production frequency when a single container is received. dzc1 For the electronic belt scale used to measure flow rate when entering a single cabinet, L c1 B is the total length of the storage tank when a single tank is installed. j1 The percentage of material received when entering a single cabinet, m jg 1 represents the calculated feed quantity when entering a single cabinet, V x1 The linear velocity of the 50Hz bottom band when entering a single cabinet;

[0040] When the cabinet placement method is to place the cabinet at the top of the cabinet, according to Formula 2:

[0041]

[0042] Calculate the production frequency F when entering the top cabinet sc2 , where F sc2 Q is the production frequency when the top cabinet is entered. dzc2 For the electronic belt scale to measure the flow rate when entering the top cabinet, L c2 B is the total length of the storage tank when it is inserted into the top cabinet. j2 The percentage of material fed into the top cabinet, m jg2 To calculate the feed rate when entering the top cabinet, V x2 The linear velocity of the bottom belt when it is fed into the top cabinet at 50Hz.

[0043] Furthermore, step S6 further includes the following steps:

[0044] S61: Set the upper limit of fluctuation for the electronic belt scale and set the delay time;

[0045] S62. Calculate the weight of materials entering the storage cabinet based on the method of entering the cabinet and the sum of the differences in the cumulative weight of materials measured by the electronic belt scale within a unit time.

[0046] S63. When there is no material on the upstream conveyor belt and the material storage percentage is 0%, continue running for a delay period and then stop the downstream conveyor belt, feeder, limiting pipe and processing equipment.

[0047] Furthermore, when the cabinet entry method is single cabinet entry, step S62 further includes the following steps:

[0048] When the storage method is single-cabinet storage

[0049] According to Formula 3:

[0050]

[0051] Calculate the feed rate (m) under the current single-cabinet feeding method. j1 Where t1 is an integer, m j1 The calculated feed rate to the storage tank is t1 seconds, where t1 is the running time of the electronic belt scale under single-tank feeding mode, in meters. t1 The cumulative mass measured by the electronic belt scale at time t1, m t1-1 ε is the cumulative mass measured by the electronic belt scale at time t1-1 seconds; t1 The determination coefficient is at time t1, when m t1 -m t1-1 When the value of ε is less than or equal to 0 or greater than or equal to the upper limit of fluctuation, t1 When m is 0 t1 -m t1-1 When ε is greater than zero and less than 100, t1 The value is 1.

[0052] When the cabinet placement method is to place the cabinet opposite the top cabinet:

[0053] According to Formula 4:

[0054]

[0055] Calculate the feed rate (m) under the current cabinet-to-top cabinet configuration. j2 Where t2 is an integer, m j2 The calculated feed rate at time t2 is the feed rate into the top cabinet under the top cabinet feeding mode, where t2 is the running time of the electronic belt scale under the top cabinet feeding mode, in meters. t2 Let m be the cumulative mass measured by the electronic belt scale at second t2. t2-1 ε is the cumulative mass measured by the electronic belt scale at time t2-1 seconds; t2 The decision coefficient is at time t2, when m t2 -m t2-1 When the value of ε is less than or equal to 0 or greater than or equal to the upper limit of fluctuation, t2 When m is 0 t2 -m t2-1 When ε is greater than zero and less than 100, t2 The value is 1.

[0056] Furthermore, during step S7, it is also necessary to determine whether the batch dosage is qualified. The specific steps are as follows:

[0057] Set the material flow deviation threshold S max ;

[0058] Calculate the current material flow deviation S p The value of the material flow deviation is equal to the cumulative weight measured by the electronic belt scale minus the set batch feeding amount;

[0059] Determine S p Value:

[0060] When -S max <=S p <=S max When the batch feeding is determined to be normal, a normal feeding signal is issued;

[0061] When S p <-S max When this happens, an abnormal low batch feeding warning signal will be issued;

[0062] When S p >-S max When this happens, a high-abnormality warning signal for batch feeding will be issued.

[0063] Secondly, a system for intelligent control of the entry and exit of storage tanks includes: a feeder, an electronic belt scale, an upstream conveyor belt, a downstream conveyor belt, a belt-type fabric carrier, an ultrasonic sensor, at least one exit storage tank, at least one entry storage tank, processing equipment, a limiting tube, and a control module.

[0064] Both the outgoing and incoming storage cabinets are equipped with a cabinet for storing materials and a bottom belt for outputting materials. The cabinet is equipped with multiple photoelectric tubes for displaying the material level.

[0065] The bottom strip is equipped with an encoder for calculating the remaining weight of the material in the storage tank and an ultrasonic sensor for detecting the thickness of the material on the bottom strip.

[0066] The material level phototube includes a material phototube, a tail material phototube, and a half-fill phototube;

[0067] The upstream conveyor belt is used to transport the material output from the bottom belt of the storage tank to the feeder;

[0068] The feeder is used to feed material into the limiting tube; the feeder has five speed settings: speed 1, speed 2, speed 3, speed 4, and speed 5.

[0069] The limiting tube is used to ensure that the thickness of the material conveyed by the feeder remains consistent; the limiting tube is equipped with a blockage photoelectric tube, a high material level photoelectric tube, a medium material level photoelectric tube, and a low material level photoelectric tube.

[0070] The electronic belt scale is used to dynamically measure the weight and flow rate of material from the limiting tube and to transport the material to the processing equipment; the processing equipment is used to process the material.

[0071] The processing equipment is used to transport the materials conveyed by the electronic belt scale to the downstream conveyor belt;

[0072] The downstream conveyor belt is used to transport materials from the processing equipment to the belt-type fabric carrier;

[0073] The belt-type material delivery vehicle is installed on the conveyor belt and is used to put the materials on the conveyor belt into the storage cabinet.

[0074] The control module is used to monitor the feeder, electronic belt scale, upstream conveyor belt, downstream conveyor belt, belt-type fabric carrier, ultrasonic sensor, outgoing storage tank, incoming storage tank, processing equipment, and limit tube.

[0075] Compared with the prior art, the beneficial effects of the present invention are:

[0076] This invention calculates the weight of materials entering the storage tank based on the method of material entry into the tank and the sum of the differences in the cumulative weight of materials measured by the electronic belt scale within a unit of time. This ensures that the measurement of the weight of materials entering the storage tank is not affected by external conditions such as electronic belt scale malfunctions or data fluctuations.

[0077] This invention only requires setting the production order and other relevant basic parameters at the start of operation. No further operations are needed during the inlet / outlet process, including but not limited to selecting the outlet storage tank, the inlet method, selecting the inlet storage tank, automatic pre-filling to prepare materials for the feeder, identifying material conditions along the path, automatically adjusting the bottom belt frequency of the outlet storage tank, and providing early warnings for batch feed quantity discrepancies. On-site personnel do not need to manually adjust various parameters during operation, greatly increasing operator efficiency.

[0078] This invention integrates the actual conditions and requirements of each stage of the material discharge process into a formula, based on the material head stage, production stage, and material tail stage. It automatically sets the operating frequency of the upstream conveyor belt and the bottom belt of the discharge storage tank, as well as the feeding gear of the feeder, for each stage.

[0079] In view of the technical problems existing in the prior art and the difficulty of solving these problems, and closely combining the technical solution to be protected by this invention with the results and data during the research and development process, this paper analyzes in detail how the technical solution of this invention solves the technical problems, and the inventive technical effects brought about after solving the problems. The specific content is as follows: Attached Figure Description

[0080] Appendix Figure 1This is a schematic diagram of the structure during the out-of-cabinet and in-cabinet processes in this invention;

[0081] Appendix Figure 2 This is a flowchart of a method for intelligently controlling the entry and exit of a storage cabinet according to the present invention;

[0082] Appendix Figure 3 This is a flowchart of the method for starting material discharge from the storage tank and automatically stopping the equipment in this invention;

[0083] Appendix Figure 4 This is a flowchart of the method for starting material feeding into the storage tank and automatically stopping the equipment in this invention. Detailed Implementation

[0084] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0085] Example 1: In view of the problems existing in the prior art, the present invention provides a cable aging condition testing device, method, equipment, terminal and evaluation system. The present invention will be described in detail below with reference to the accompanying drawings.

[0086] like Figure 1 As shown, a smart control system for entering and exiting storage tanks includes: a feeder, an electronic belt scale, an upstream conveyor belt, a downstream conveyor belt, a belt-type fabric carrier, an ultrasonic sensor, at least one exit storage tank, at least one entry storage tank, processing equipment, a limiting tube, and a control module.

[0087] Both the outgoing and incoming storage cabinets are equipped with a cabinet for storing materials and a bottom belt for outputting materials. The cabinet is equipped with multiple photoelectric tubes for displaying the material level.

[0088] More specifically, the outgoing and incoming storage tanks are exactly the same. In this embodiment, there are two outgoing storage tanks and two incoming storage tanks. The "half-entry tank" refers to the tank where only half of the material on the electronic belt scale enters the incoming storage tank. Specifically, for example... Figure 1 As shown, the materials on the electronic belt scale enter two identical storage tanks.

[0089] The bottom strip is equipped with an encoder for calculating the remaining weight of the material in the storage tank and an ultrasonic sensor for detecting the thickness of the material on the bottom strip.

[0090] The material level phototube includes a material phototube, a tail material phototube, and a half-fill phototube;

[0091] The upstream conveyor belt is used to transport the material output from the bottom belt of the storage tank to the feeder;

[0092] The feeder is used to feed material into the limiting tube; the feeder has five speed settings: speed 1, speed 2, speed 3, speed 4, and speed 5.

[0093] The limiting tube is used to ensure that the thickness of the material conveyed by the feeder remains consistent; the limiting tube is equipped with a blockage photoelectric tube, a high material level photoelectric tube, a medium material level photoelectric tube, and a low material level photoelectric tube.

[0094] The electronic belt scale is used to dynamically measure the weight and flow rate of material from the limiting tube and to transport the material to the processing equipment; the processing equipment is used to process the material.

[0095] The processing equipment is used to transport the materials conveyed by the electronic belt scale to the downstream conveyor belt; the downstream conveyor belt is used to transport the materials in the processing equipment to the belt-type fabric carrier.

[0096] The belt-type material delivery vehicle is installed on the conveyor belt and is used to put the materials on the conveyor belt into the storage cabinet.

[0097] The control module is used to monitor the feeder, electronic belt scale, upstream conveyor belt, downstream conveyor belt, belt-type fabric carrier, ultrasonic sensor, outgoing storage tank, incoming storage tank, processing equipment, and limit tube.

[0098] To enable those skilled in the art to fully understand how the present invention is specifically implemented, this embodiment is an explanatory embodiment that elaborates on the technical solution of the claims.

[0099] Example 2

[0100] This embodiment is a further supplement to Embodiment 1, mainly describing the working process of Embodiment 1. The specific content is as follows:

[0101] A method for intelligently controlling the entry and exit of a storage cabinet, the method comprising:

[0102] S1. Set the process production order and material intake percentage for this storage cabinet entry / exit;

[0103] S2. Select the storage cabinet for entering the cabinet and the storage cabinet for exiting the cabinet, as well as the method of entering the storage cabinet for entering the cabinet, according to the storage cabinet information and the production work order;

[0104] S3. Enter the pre-filling stage. The feeder, upstream conveyor belt, and bottom belt of the outgoing storage tank are turned on in sequence to prepare materials for the feeder. The downstream conveyor belt, bottom belt of the ingoing storage tank, material distribution vehicle, processing equipment, and preheating equipment are turned on in sequence.

[0105] S4. When the feeder has finished preparing the material, turn on the electronic belt scale to enter the production stage; and simultaneously execute steps S5 and S6.

[0106] S5. The container starts discharging material. When there is no material on the upstream conveyor belt and the storage percentage is 0%, the upstream conveyor belt and the bottom belt of the container stop.

[0107] S6. When the storage tank starts feeding, if the downstream conveyor belt, feeder, limiting tube and processing equipment in the production stage are all out of material, the downstream conveyor belt, feeder, limiting tube and processing equipment will be stopped after a delay.

[0108] S7. When all equipment is shut down, update the storage information of the storage cabinets according to the production work order of the process.

[0109] The methods of cabinet entry include entering a pair of cabinets or entering a single cabinet.

[0110] More specifically, when the material is fed into a single storage tank, all the material on the electronic belt scale enters that storage tank until it is full. When the material is fed into a double storage tank, only half of the material on the electronic belt scale enters the storage tank. Specifically, for example... Figure 1 As shown, the materials on the electronic belt scale enter two identical storage tanks.

[0111] The production work order for the process includes the production batch, brand, and batch feed weight, and the storage tank information includes the production batch, brand, weight, and storage time.

[0112] Step S2 further includes the following steps:

[0113] Based on the storage tank information, select the storage tank with the same production batch and release number as the release storage tank from the storage tanks to be released;

[0114] The method of loading materials into the storage tank is determined by comparing the batch material quantity in the production work order with the tank weight multiplied by the material feeding percentage in the storage tank information. Empty, unused storage tanks are then selected from the tanks awaiting loading as the loading tanks.

[0115] More specifically, the storage tank weight is the maximum weight of materials that the storage tank can store, and the loading percentage is the percentage of the maximum amount of materials that can be loaded into the storage tank as set manually. When the amount of materials fed in a single batch is greater than the value of the storage tank weight multiplied by the loading percentage in the storage tank information, one storage tank cannot completely fill the storage tank with the amount of materials fed in a single batch. Therefore, two storage tanks are required, and the loading method is selected as "top-to-top storage tank". When the amount of materials fed in a single batch is less than the value of the storage tank weight multiplied by the loading percentage in the storage tank information, one storage tank can completely fill the storage tank with the amount of materials fed in a single batch. Therefore, the loading method is selected as "single storage tank".

[0116] Before entering the pre-filling stage, the material tail percentage needs to be set, and the operating frequency of the bottom belt of the storage tank and the upstream conveyor belt needs to be increased to 50Hz to quickly pull out the material until the discharge state becomes the material head stage. The discharge state includes the material head stage, the production stage, and the material tail stage. The material head stage is when the material tail photocell is not blocked; the production stage is when the material tail photocell is blocked and the storage percentage is greater than the material tail percentage; the material tail stage is when the storage percentage is less than the material tail percentage.

[0117] More specifically, the material tail percentage is set based on experience, meaning that when the material discharge process from the storage tank is in the material tail stage, the current material storage percentage should be less than the material tail percentage.

[0118] The method for calculating the percentage of stored material is as follows:

[0119] Calculate the single-pulse discharge percentage: This is the ratio of the bottom strip discharge length of the storage tank to the total length of the storage tank when the encoder detects a single pulse.

[0120] Calculate the feed percentage; it is the ratio of the weight of the material currently out of the container to the weight of the material when the container is full.

[0121] Calculate the storage percentage: The initial storage percentage is equal to the percentage of material fed into the storage tank during the last feeding. Each time a falling edge of the encoder is received, the storage percentage is subtracted from the single-pulse feeding percentage to obtain the new storage percentage.

[0122] In calculating the storage percentage, it is also necessary to dynamically adjust the value of the storage percentage based on the actual site conditions.

[0123] When half of the photocell is exposed, set the storage percentage to 50%.

[0124] When the photocell with material is not exposed, set the material storage percentage to the percentage of the photocell with material.

[0125] When the tail material photocell is exposed, the storage percentage is set to 0%.

[0126] Step S5 further includes the following steps:

[0127] S51: Set the basic parameters of the storage cabinet;

[0128] S52: Calculate the production frequency and run the bottom belt of the storage tank at the production frequency. Adjust the running frequency of the bottom belt of the storage tank and the frequency of the upstream conveyor belt according to the material storage status of the limit tube of the electronic belt scale.

[0129] S53: Determine if it is the material tail stage. If so, increase the running frequency of the bottom belt to 50HZ. When there is no material on the upstream conveyor belt and the storage percentage is 0%, stop the upstream conveyor belt and the bottom belt of the out-of-cabinet storage tank.

[0130] The basic parameters include the weight of the full container of materials, the percentage of the photocell with material, the single pulse discharge length, the deceleration interval time, the deceleration frequency step size, the acceleration interval time, and the acceleration frequency step size.

[0131] More specifically, the deceleration interval time refers to the time required for the bottom band operating frequency of the storage tank to decrease from 50Hz to 0Hz, the acceleration interval time refers to the time required for the bottom band operating frequency of the storage tank to increase from 0Hz to 50Hz, the deceleration frequency step size refers to the minimum frequency subtracted each time the bottom band operating frequency of the storage tank is decelerated, and the acceleration frequency step size refers to the minimum frequency added each time the bottom band operating frequency of the storage tank is accelerated.

[0132] In step S52, the production frequency calculation process is as follows:

[0133] When the storage method is single-cabinet storage, according to Formula 1:

[0134]

[0135] Calculate the production frequency F when entering and leaving a single cabinet. sc1 , where F sc1 Q represents the production frequency when a single container is received. dzc1 For the electronic belt scale used to measure flow rate when entering a single cabinet, L c1 B is the total length of the storage tank when a single tank is installed. j1 The percentage of material received when entering a single cabinet, m jg 1 represents the calculated feed quantity when entering a single cabinet, V x1 The linear velocity of the 50Hz bottom band when entering a single cabinet;

[0136] When the cabinet placement method is to place the cabinet at the top of the cabinet, according to Formula 2:

[0137]

[0138] Calculate the production frequency F when entering the top cabinet sc2 , where F sc2 Q is the production frequency when the top cabinet is entered. dzc2 For the electronic belt scale to measure the flow rate when entering the top cabinet, L c2 B is the total length of the storage tank when it is inserted into the top cabinet. j2 The percentage of material fed into the top cabinet, m jg2 To calculate the feed rate when entering the top cabinet, V x2 The linear velocity of the bottom belt when it is fed into the top cabinet at 50Hz.

[0139] The derivation processes of Formula 1 and Formula 2 are as follows:

[0140] When the storage method is single-cabinet storage, the production frequency F is calculated according to the formula. sc :

[0141] First, calculate the shortest time T required for the materials to be transported to the single cabinet. out1 :

[0142]

[0143] T out L is the shortest time required to transport materials when entering a single container. c1 B represents the total length of the storage tank when a single tank is inserted. j1 V represents the percentage of material fed into a single cabinet. x1 This represents the linear velocity of the bottom belt at 50Hz when material enters a single container; this allows calculation of the shortest time required for all material to exit the container when material enters. The feed percentage is the ratio of the currently calculated feed amount to the container capacity when material enters a single container.

[0144] Then, the maximum flow rate of the bottom strip when entering a single cabinet is calculated:

[0145]

[0146] Q MAX1 The maximum flow rate of the bottom strip when entering a single cabinet, m jg1 To calculate the feed quantity when entering a single cabinet, T out1 This is the shortest time required to transport all materials when they are placed in a single container.

[0147] Finally, calculate the production frequency when a single container is entered:

[0148]

[0149] In the formula, 50 refers to the operating frequency of the bottom belt when the maximum flow rate of the bottom belt is input to a single cabinet, which is 50 Hz.

[0150] Where F sc1 Q is the production frequency when a single container is received. dzc1 For the electronic belt scale to measure flow rate when entering a single cabinet, Q MAX1 This represents the maximum flow rate of the bottom band. After transformation and substitution, the following formula is obtained:

[0151]

[0152]

[0153] At this time, F sc Q is the sum of the production frequencies of the two storage tanks when they are being fed into the top cabinet. dzc2For the electronic belt scale to measure the flow rate when entering the top cabinet, L c2 B is the total length of the storage tank when it is inserted into the top cabinet. j2 The percentage of material fed into the top cabinet, m jg2 To calculate the feed rate when entering the top cabinet, V x2 The linear velocity of the bottom belt at 50Hz when entering the top cabinet; the feed percentage is the ratio of the currently calculated feed amount to the storage tank capacity when entering the top cabinet;

[0154] Similarly, when the cabinet is placed in a top-mounted cabinet, the following formula can be derived.

[0155]

[0156] At this time, F sc Q is the sum of the production frequencies of the two storage tanks when they are being fed into the top cabinet. dzc2 For the electronic belt scale to measure the flow rate when entering the top cabinet, L c2 B is the total length of the storage tank when it is inserted into the top cabinet. j2 The percentage of material fed into the top cabinet, m jg To calculate the feed rate when entering the top cabinet, V x2 The linear velocity of the bottom band at 50Hz when entering the top cabinet;

[0157] Since the two storage tanks in the top-mounted cabinet are identical, their production frequencies are equal. Therefore, F scd =2F sc2 , where F sc2 This refers to the production frequency of the storage cabinet when the cabinet is being used as a top cabinet.

[0158]

[0159] More specifically, the upstream conveyor belt speed calculation steps in step S52 are as follows:

[0160] When the material in the limiting tube blocks the blocking photocell, the upstream conveyor belt frequency is 0 and the feeding gear is 0; when the material in the limiting tube blocks the high-level photocell, the upstream conveyor belt frequency is 0.2 times the production frequency and the feeding gear is 1.

[0161] When the material in the limiting tube blocks the low-level photocell and the medium-level photocell but does not block the high-level photocell, and the duration of the above state exceeds the deceleration interval, the upstream conveyor belt frequency is 0.7 times the production frequency, and the feeding gear is 2.

[0162] When the material in the limiting tube blocks the low-level photoelectric tube and the medium-level photoelectric tube but does not block the high-level photoelectric tube, and the duration of the above state exceeds the deceleration interval, then the upstream conveyor belt frequency is equal to the production frequency, and the feeding gear is 3.

[0163] When the material in the limiting tube does not block any photoelectric tube, the production frequency is multiplied by 1.3, so the upstream conveyor belt frequency is 1.3, and the feeding gear is 4.

[0164] The calculation steps for the bottom band operating frequency in step S52 are as follows:

[0165] S521. Calculate the bottom band frequency offset of the storage tank:

[0166] When the material in the limiting tube blocks the low-level phototube and the medium-level phototube and this state lasts for more than the deceleration interval, the new bottom band frequency offset is equal to the original bottom band frequency offset minus the deceleration frequency step size.

[0167] When the material in the limiting tube does not block any phototube and this state lasts longer than the acceleration interval, the new bottom band frequency offset is equal to the original bottom band frequency offset plus 3 times the acceleration frequency step size.

[0168] When the material in the limiting tube blocks the low-level phototube and exceeds the acceleration interval time, the new bottom band frequency offset is equal to the original bottom band frequency offset plus the acceleration frequency step size.

[0169] S522. Calculate the bottom band frequency of the storage tank in production mode;

[0170] The bottom band frequency of the storage tank in its initial state is equal to the production frequency;

[0171] When the baseband frequency offset changes, the current baseband frequency is summed with the current baseband frequency offset to obtain the final frequency;

[0172] When the feeder's feed gears are 3, 4, and 5, the new bottom belt frequency is equal to the final frequency.

[0173] When the feeder is in feed gear 2, the new bottom belt frequency is equal to 0.7 times the final frequency;

[0174] When the feeder is in feed gear 1, the new bottom belt frequency is equal to 0.2 times the final frequency;

[0175] When the feeder is in feed gear 0, the new bottom belt frequency is equal to 5 times the final frequency.

[0176] Step S6 further includes the following steps:

[0177] S61: Set the upper limit of fluctuation for the electronic belt scale and set the delay time;

[0178] S62. Calculate the weight of materials entering the storage cabinet based on the method of entering the cabinet and the sum of the differences in the cumulative weight of materials measured by the electronic belt scale within a unit time.

[0179] S63. When there is no material on the upstream conveyor belt and the material storage percentage is 0%, continue running for a delay period and then stop the downstream conveyor belt, feeder, limiting pipe and processing equipment.

[0180] When the cabinet entry method is single cabinet entry, step S62 further includes the following steps:

[0181] When the storage method is single-cabinet storage, according to Formula 3:

[0182]

[0183] Calculate the feed rate (m) under the current single-cabinet feeding method. j1 Where t1 is an integer, m j1 The calculated feed rate to the storage tank is t1 seconds, where t1 is the running time of the electronic belt scale under single-tank feeding mode, in meters. t1 The cumulative mass measured by the electronic belt scale at time t1, m t1-1 ε is the cumulative mass measured by the electronic belt scale at time t1-1 seconds; t1 The determination coefficient is at time t1, when m t1 -m t1-1 When the value of ε is less than or equal to 0 or greater than or equal to the upper limit of fluctuation, t1 When m is 0 t1 -m t1-1 When ε is greater than zero and less than 100, t1 The value is 1.

[0184] When the cabinet placement method is to place the cabinet opposite the top cabinet:

[0185] According to Formula 4:

[0186]

[0187] Calculate the feed rate (m) under the current cabinet-to-top cabinet configuration. j2 Where t2 is an integer, m j2 The calculated feed rate at time t2 is the feed rate into the top cabinet under the top cabinet feeding mode, where t2 is the running time of the electronic belt scale under the top cabinet feeding mode, in meters. t2 Let m be the cumulative mass measured by the electronic belt scale at second t2. t2-1 ε is the cumulative mass measured by the electronic belt scale at time t2-1 seconds; t2 The decision coefficient is at time t2, when m t2 -m t2-1 When the value of ε is less than or equal to 0 or greater than or equal to the upper limit of fluctuation, t2 When m is 0 t2 -m t2-1 When ε is greater than zero and less than 100, t2 The value is 1.

[0188] More specifically, the execution process of this embodiment is as follows:

[0189] Set the upper limit for data fluctuation of the electronic belt scale to 100, and set the storage cabinet entry method to half-cabinet entry; and read the cumulative mass of the electronic belt scale every second, such as... Figure 1 As shown, when entering half-cabinets, the material in the electronic belt scale enters two separate storage tanks. Therefore, the calculated feed amount for each storage tank in the half-cabinet mode is half the feed amount when entering the top-mounted storage tank. Thus, the formula is:

[0190]

[0191] Calculate the feed rate (m) under the current half-cabinet feeding method. j2 Where t2 is an integer, m j2 The calculated feed rate is t2 seconds for the half-cabinet feeding mode, where t2 is the running time of the electronic belt scale in the half-cabinet feeding mode, and m. t2 Let m be the cumulative mass measured by the electronic belt scale at second t2. t2-1 ε is the cumulative mass measured by the electronic belt scale at time t2-1 seconds; t2 The decision coefficient is at time t2, when m t2 -m t2-1 When the value of ε is less than or equal to 0 or greater than or equal to the upper limit of fluctuation, t2 When m is 0 t2 -m t2-1 When ε is greater than zero and less than 100, t2 The value is 1.

[0192] The following example illustrates the calculation method of this formula. The cumulative weights of the electronic belt scale from 0 seconds to 5 seconds after operation are 0 kg, 0.3 kg, 0.8 kg, 1.5 kg, 2.5 kg, and 120 kg, respectively. Calculate the weights within 1 to 5 seconds (m) for each of these values. t2 -m t2-1 The values ​​were 0.3kg, 0.5kg, 0.7kg, 1.0kg, and 117.5kg respectively; due to the 5th second (m t2 -m t2-1 The value is greater than 100, therefore, in the 5th second ε t2 The value of ε is 0, therefore ε lasts from 1 to 5 seconds. t2 The values ​​are 1, 1, 1, 1, and 0 respectively; therefore, the feed rate is calculated to be 1.25 kg.

[0193] As can be seen from the above, all the values ​​accumulated using this method are correct, and the erroneous values ​​are automatically filtered by the judgment coefficient. Therefore, the calculated feed amount will not be affected by data fluctuations. In contrast, if the cumulative mass of the electronic belt scale is directly used as the basis for feeding, the system will automatically determine that the storage tank is full when there is a high jump. When there is a data jump, the calculated feed amount of this invention will be less than the cumulative weight measured by the electronic belt scale. However, after testing by the applicant, it was found that the cumulative mass of the electronic belt scale is read once every second in this embodiment, and the reading frequency is very high, so the error is not large.

[0194] When performing step S7, it is also necessary to determine whether the batch dosage is qualified. The specific steps are as follows:

[0195] Set the material flow deviation threshold S max More specifically, this value is an empirical value derived from numerous trials.

[0196] Calculate the current material flow deviation S p The value of the material flow deviation is equal to the cumulative weight measured by the electronic belt scale minus the set batch feeding amount;

[0197] Determine S p Value:

[0198] When -S max <=S p <=S max When the batch feeding is determined to be normal, a normal feeding signal is issued;

[0199] When S p <-S max When this happens, an abnormal low batch feeding warning signal will be issued;

[0200] When S p >-S max When this happens, a high-abnormality warning signal for batch feeding will be issued.

[0201] More specifically, in step S7, when all equipment is shut down, the storage information of the storage cabinet is updated according to the contents of the process production order; specifically, the production batch in the process production order is automatically entered into the production batch in the storage information, the brand number in the process production order is automatically entered into the brand number in the storage information, and the current time is used as the storage time.

[0202] This invention calculates the weight of materials entering the storage tank based on the method of material entry into the tank and the sum of the differences in the cumulative weight of materials measured by the electronic belt scale within a unit of time. This ensures that the measurement of the weight of materials entering the storage tank is not affected by external conditions such as electronic belt scale malfunctions or data fluctuations.

[0203] The working principle of this embodiment is basically the same as that of Embodiment 1, so it will not be described again here.

[0204] The above embodiments are merely preferred examples of the present invention, and not an exhaustive list of all feasible implementations of the present invention.

[0205] For those skilled in the art, any obvious modifications made to this invention without departing from the principles and spirit of the invention should be considered to be included within the scope of protection of the claims of this invention.

Claims

1. A method of intelligently controlling access to a storage cabinet, the method comprising: The method comprises: S1, setting the process production order and the feeding percentage of this time entering and exiting the storage cabinet; S2, selecting the entering cabinet cabinet, the exiting cabinet cabinet and the entering cabinet cabinet according to the cabinet information, the feeding percentage and the production order respectively; S3, entering the pre-filling stage, opening the feeder, the upstream conveying belt and the bottom belt of the exiting cabinet cabinet in sequence to prepare materials for the feeder, opening the downstream conveying belt, the bottom belt of the entering cabinet cabinet, the cloth car and the processing equipment in sequence, and preheating the equipment; S4, when the feeder preparation is completed, the electronic belt scale is started, and the production stage is entered; steps S5 and S6 are executed at the same time; S5, the exiting cabinet cabinet starts to discharge, and when there is no material on the upstream conveying belt and the storage percentage is 0%, the upstream conveying belt and the bottom belt of the exiting cabinet cabinet are stopped; S6, the entering cabinet cabinet starts to feed, and when there is no material on the downstream conveying belt, the feeder, the limiting tube and the processing equipment in the production stage, the downstream conveying belt, the feeder, the limiting tube and the processing equipment are stopped after a delay; S7, when all the equipment is completely stopped, the cabinet information of the entering cabinet cabinet is updated according to the content of the process production order; The entering cabinet mode includes entering the opposite top cabinet and entering the single cabinet; Before entering the pre-filling stage, the tail percentage is set, the running frequency of the bottom belt of the exiting cabinet cabinet and the running frequency of the upstream conveying belt are increased to 50HZ to quickly pull out the material until the discharging state changes to the head stage, wherein the discharging state includes the head stage, the production stage and the tail stage, the head stage is that the tail photoelectric tube is not blocked, the production stage is that the tail photoelectric tube is blocked and the storage percentage is greater than the tail percentage, and the tail stage is that the storage percentage is less than the tail percentage; The storage percentage calculation method is: The single pulse discharging percentage is the ratio of the discharging length of the bottom belt of the exiting cabinet cabinet to the total length of the cabinet when the single pulse is detected by the encoder; The feeding percentage is the ratio of the weight of the material in the current exiting cabinet cabinet to the weight of the full cabinet material; The storage percentage is calculated: the value of the storage percentage at the first time is equal to the value of the feeding percentage when the exiting cabinet cabinet is entered the last time; every time a falling edge of the encoder is received, the value of the storage percentage is reduced by the value of the single pulse discharging percentage to obtain a new storage percentage; In the process of calculating the storage percentage, the value of the storage percentage also needs to be dynamically corrected according to the actual situation on site: When the half-cabin photoelectric tube is exposed, the storage percentage is set to 50%; When the material photoelectric tube is exposed, the storage percentage is set to the percentage of the material photoelectric tube; When the tail material photoelectric tube is exposed, the storage percentage is set to 0%.

2. The method of claim 1, wherein: The process production order includes the production batch, the brand and the batch feeding weight, and the cabinet information includes the production batch, the brand, the weight and the entering cabinet time.

3. The method of claim 2, wherein: The step S2 further comprises the following steps: According to the cabinet information, the cabinet with the same production batch and exiting cabinet brand as the process production order is selected from the cabinets to be exited as the exiting cabinet; The entering cabinet mode is determined by comparing the single batch feeding amount in the process production order with the value of the cabinet weight multiplied by the feeding percentage in the cabinet information, and the empty cabinet not in use is selected from the cabinets to be entered as the entering cabinet.

4. The method of claim 1, wherein: The step S5 further comprises the following steps: S51: setting the basic parameters of the out-cabinet storage cabinet; S52: calculating the production frequency, and running the bottom belt of the out-cabinet storage cabinet at the production frequency, adjusting the running frequency of the bottom belt of the out-cabinet storage cabinet and the frequency of the upstream conveying belt according to the storage condition of the electronic belt scale limit tube; S53: judging whether it is the tail stage, if yes, the running frequency of the bottom belt is increased to 50HZ, when there is no material on the upstream conveying belt and the storage percentage is 0%, the upstream conveying belt and the bottom belt of the out-cabinet storage cabinet are stopped. The basic parameters include full-cabinet material weight, percentage of material photoelectric tube, single-pulse discharging length, deceleration interval time, deceleration frequency step, acceleration interval time and acceleration frequency step.

5. The method of claim 4, wherein: In the step S52, the production frequency is calculated as follows: When the in-cabinet mode is in single cabinet, according to formula one: F = Q / (L x B x m x V) sc1 where F sc1 is the production frequency at the entry of the silo, Q dzc1 is the electronic belt scale metered flow at the entry of the silo, L c1 is the total length of the silo at the entry, B j1 is the percentage of feed at the entry, m jg 1 is the calculated feed at the entry of the silo, V x1 is the linear speed of the bottom belt at 50 Hz at the entry of the silo; When the in-cabinet mode is in opposite top cabinet, according to formula two: Production frequency F into the push-to-top bin sc2 where F sc2 is the production frequency into the push-to-top bin, Q dzc2 is the electronic belt scale metered flow into the push-to-top bin, L c2 is the total length of the bin into the push-to-top bin, B j2 is the feed percentage into the push-to-top bin, m jg2 is the calculated feed amount into the push-to-top bin, V x2 is the linear speed of the bottom belt into the push-to-top bin at 50 Hz.

6. The method of claim 1, wherein: The step S6 further comprises the following steps: S61: setting the upper limit of the fluctuation of the electronic belt scale, and setting the delay time; S62: calculating the material weight entering the in-cabinet storage cabinet according to the in-cabinet mode of the in-cabinet storage cabinet and the sum of the difference between the cumulative weight of the material per unit time measured by the electronic belt scale; S63: when there is no material on the upstream conveying belt and the storage percentage is 0%, the downstream conveying belt, the feeder, the limit tube and the processing equipment are stopped after the delay time.

7. The method of claim 6, wherein: When the in-cabinet mode is in single cabinet, the step S62 further comprises the following steps: When the in-cabinet mode is in single cabinet, According to formula three: Calculate the feed rate (m) under the current single-cabinet feeding method. j1 Where t1 is an integer, m j1 The calculated feed rate to the storage tank is t1 seconds, where t1 is the running time of the electronic belt scale under single-tank feeding mode, in meters. t1 The cumulative mass measured by the electronic belt scale at time t1, m t1-1 ε is the cumulative mass measured by the electronic belt scale at time t1-1 seconds; t1 The determination coefficient is at time t1, when m t1 -m t1-1 When the value of ε is less than or equal to 0 or greater than or equal to the upper limit of fluctuation, t1 When m is 0 t1 -m t1-1 When ε is greater than zero and less than 100, t1 The value is 1; When the in-cabinet mode is in opposite top cabinet: According to formula four: m is the calculated feed amount under the current cabinet-to-top cabinet method j2 where t2 is an integer, m j2 is the calculated feed amount under the cabinet-to-top cabinet method at t2 seconds, t2 is the electronic belt scale running time under the cabinet-to-top cabinet method, m t2 is the cumulative mass measured by the electronic belt scale at t2 seconds, m t2-1 is the cumulative mass measured by the electronic belt scale at t2-1 seconds; ε t2 is the determination coefficient at t2 seconds, when m t2 -m t2-1 is less than or equal to 0 or greater than or equal to the fluctuation upper limit, ε t2 is 0, when m t2 -m t2-1 is greater than 0 and less than 100, the value of ε t2 is 1.

8. The method of claim 1, wherein: When the step S7 is executed, it is also necessary to determine whether the batch feeding quantity is qualified, and the specific steps are as follows: Setting a material flow deviation threshold value S max ; calculating a current material flow deviation S p , the value of which is equal to the electronic belt scale metering cumulative weight minus the set batch feed quantity; Judgment S p the value of: When -S max <=S p <=S max When, the batch feeding is normal, and a normal feeding signal is sent out. When S p <-S max , a batch feeding low abnormal early warning signal is sent out; When S p - S max , a high abnormal batch feeding warning signal is issued.

9. A system for intelligent control of access to a storage cabinet for use in the method of any one of claims 1-8, characterized in that, It comprises: a feeder, an electronic belt scale, an upstream conveying belt, a downstream conveying belt, a belt-type material car, an ultrasonic sensor, at least one out-cabinet storage cabinet, at least one in-cabinet storage cabinet, a processing equipment, a limit tube and a control module; The out-cabinet storage cabinet and the in-cabinet storage cabinet are each provided with a cabinet body for storing material and a bottom belt for outputting material, and a plurality of material level photoelectric tubes for displaying the material level height are arranged on the cabinet body; An encoder for calculating the residual weight of the material in the storage cabinet and an ultrasonic sensor for detecting the thickness of the material on the bottom belt are arranged on the bottom belt; The material level photoelectric tube comprises a material photoelectric tube, a tail material photoelectric tube and a half-bin photoelectric tube; The upstream conveying belt is used to convey the material output by the bottom belt of the out-cabinet storage cabinet to the feeder; The feeder is used to feed the material to the limit tube, and the gears of the feeder include five gears, i.e. 1st gear, 2nd gear, 3rd gear, 4th gear and 5th gear The limit tube is used to ensure that the thickness of the material conveyed by the feeder remains consistent, and a blockage photoelectric tube, a high material level photoelectric tube, a medium material level photoelectric tube and a low material level photoelectric tube are arranged on the limit tube; The electronic belt scale is used to dynamically measure the weight and flow of the material from the limit tube, and convey the material to the processing equipment; and the processing equipment is used to process the material. The processing equipment is used for transporting the material delivered by the electronic belt scale to a downstream conveyor belt; The downstream conveyor belt is used for delivering the material in the processing equipment to a belt-type material distribution vehicle; The belt-type material distribution vehicle is arranged on the conveyor belt and used for feeding the material on the conveyor belt into an inlet storage bin; The control module is used for monitoring the feeder, the electronic belt scale, the upstream conveyor belt, the downstream conveyor belt, the belt-type material distribution vehicle, the ultrasonic sensor, the outlet storage bin, the inlet storage bin, the processing equipment and the limiting pipe.

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