Intelligent, self-adaptive control apparatus for the automated optimization and control of the grinding line of a roller system, and corresponding method

Abstract

A product processing installation and corresponding method for the grinding and/or crushing of granular fruits or the like. There is a self-adaptive regulation and control method and corresponding regulation and control device for the self-optimised control of a mill installation and a grinding line of a roller system of the mill installation. The grinding line include a plurality of processing units, which, based on operational process parameters, can each individually be controlled and individually regulated in their operation by means of the regulation and control device. A batch control with a defined processing sequence in the processing units can be regulated by an operational process recipe, wherein a defined amount of a final product can be produced from one or more input materials by means of the operational process recipe. The processing units are controlled based on specific operational batch process parameters assigned to the operational process recipe.

Claims

1. A self-adaptive regulation and control method for at least one regulation and control device comprising circuitry configured for self-optimized control of a mill installation and a grinding line of a roller system for the mill installation, wherein the grinding line comprises a plurality of processors, which, based on operational process parameters, are configured to be individually controlled by the regulation and control. device and are configured to be individually regulated in their operation, wherein by an operational process recipe, a batch control with a defined processing sequence in the processors is regulated, wherein by the operational process recipe, a defined amount of a final product is produced from one or more input products, and wherein the processors are controlled based on specific operational batch parameters assigned to the operational process recipe, the method comprising: detecting, using a pattern recognition module implemented by the circuitry of the regulation and control device, operational process recipes with multi-dimensional batch parameter patterns, wherein an operational process recipe comprises, stored, at least one or more input product parameters and/or final product parameters, a defined sequence of a grinding process within the processors of the grinding line, and operational process parameters assigned to the respective processors of the grinding line, storing, using a storage in the regulation and control device, historical operational process recipes with historical batch process parameters, wherein the historical batch process parameters of a process recipe each define a process-typical, multi-dimensional batch process parameter pattern of an optimized batch process, triggering and/or selecting, when entering final product parameters and/or input product parameters of a new operational process recipe, closest batch process parameter patterns by pattern recognition of the pattern recognition module of one or more of the stored historical operational process recipes based on the assigned multi-dimensional batch parameter patterns as a new batch parameter pattern, generating, using the regulation and control device based on the triggered closest batch process parameter patterns, new operational process parameters for the entered new operational process recipe, wherein the processors based on the generated operational process recipe with the assigned new operational process parameters are correspondingly controlled and regulated by the regulation and control device, and continuously monitoring, during the grinding process of the new operational process recipe, the operational process parameters by the regulation and control device, wherein in the case of detection of an anomaly as a defined deviation of the monitored operational process parameter from the specified operational process parameters of the new operational process recipe, a warning signal is transmitted to an alarm circuitry.

2. The self-adaptive regulation and control method according to claim 1, wherein the operational process parameter comprises at least measuring parameters relating to the currents and/or power consumption of one or more roller mills of the mill installation and/or yield and/or throughput/machine running time.

3. The self-adaptive regulation and control method according to claim 2, wherein the roller system comprises at least fluted rollers and/or smooth rollers.

4. The self-adaptive regulation and control method according to claim 2, wherein the operational process parameter comprises at least measuring parameters relating to the currents and/or power consumption of all roller mills of the mill installation.

5. The self-adaptive regulation and control method according to claim 1, comprising determining defined quality parameters of the final product and specific flour yield as a function of the input products by the process-typical operational process parameters of the optimized batch process.

6. The self-adaptive regulation and control method according to claim 5, wherein the defined quality parameters comprise at least particle size distribution and/or starch damage and/or protein quality and/or water content.

7. The self-adaptive regulation and control method according to claim 1, wherein the monitored operational process parameters comprise at least yield and/or energy intake/consumption and/or throughput/machine running time.

8. The self-adaptive regulation and control method according to claim 1, comprising: detecting, during the grinding process, in the case of detection of the anomaly, continuous long-term changes in the monitored operational process parameters by the regulation and control device, and determining the defined deviation of the monitored operational process parameter from the generated operational process parameter of the new operational process recipe as a function of the measured continuous long-term changes.

9. The self-adaptive regulation and control method according to claim 1, comprising: transmitting the monitored operational process parameters of a plurality of regulation and control devices via a network to a central monitoring circuitry, and centrally monitoring and regulating the plurality of regulation and control devices.

10. The self-adaptive regulation and control method according to claim 1, comprising determining the defined deviation of the monitored operational process parameters from the generated operational process parameters of the new operational process recipe as a function of the natural fluctuations within definable x.sup.2 standard deviations.

11. A self-adaptive regulation and control device for the automated control and self-optimization of a mill installation or a grinding line of a roller system, wherein the grinding line comprises a plurality of processors, which, based on operational process parameters, are configured to be individually controlled and individually regulated in their operation by the regulation and control device, wherein by a batch control, a defined amount of a final product is produced from one or more input products according to a defined sequence of the processors based on specific assigned operational process parameters, the self-adaptive regulation and control device comprising: circuitry configured to implement a pattern recognition module for detecting operational process recipes with multi-dimensional batch parameter patterns, wherein an operational process recipe comprises, stored, at least one or more input product parameters and/or final product parameters, a defined sequence of a grinding process within the processors of the grinding line, and operational process parameters assigned to the respective processors of the grinding line, store, using a storage in the regulation and control device, historical operational process recipes with historical batch process parameters, wherein the historical operational process parameters of an operational process recipe each define a process-typical, multi-dimensional batch process parameter pattern of an optimized batch process, trigger and/or select, when entering final product parameters and/or input product parameters of a new operational process recipe, closest batch process parameter patterns by pattern recognition of the pattern recognition module of one or more of the stored historical operational process recipes based on the assigned multi-dimensional batch parameter patterns as a new batch parameter pattern, generate, based on the triggered closest batch parameter pattern, new operational process parameters for the entered new operational process recipe, wherein the processors based on the determined operational process recipe and the operational process parameters are correspondingly controlled and regulated by the regulation and control device, and continuously monitor, during the grinding process, the operational process parameters, wherein in the case of detection of an anomaly as a defined deviation of the monitored operational process parameters from the determined operational process parameters of the new operational process recipe, the circuitry is configured to transmit a warning signal to an alarm circuitry.

Description

DETAILED DESCRIPTION OF THE INVENTION

(1) Embodiment variants of the present invention are described below using examples. The examples of the embodiments are illustrated by the following attached figures:

(2) FIG. 1 schematically illustrates a representation of an embodiment variant according to the invention, in which the currents are viewed from all roller mills (B(2: 21, . . . , 23)/C(3: 31, . . . , 33)), divided into B passage (here: fluted rollers 21, . . . , 23) and C passage (here: smooth rollers 31, . . . , 33). For each recipe and device setting/characteristic, there is a typical pattern that determines the quality 61 of the final product as a function of the raw material and the previous process steps (such as particle size distribution 611, starch damage 612, protein quality 613, water content 614) and the specific flour yield 62. The typical pattern can also be represented by a specific, typical colour. A change in the pattern or the colour pattern of the currents is detected as an anomaly and a corresponding electronic signal is generated to generate a warning message or to activate further devices or apparatus.

(3) FIG. 2 schematically illustrates a representation of a typical pattern of the current of a roller mill, i.e. a typical signature of a recipe. The average value of the current for approximately 6 months of operation for the 4 recipes produced.

(4) FIG. 3 shows schematically a representation of a similar pattern for the fluctuations. The standard deviation of the current for the same period and the same recipes.

(5) FIGS. 4 and 5 show schematically a representation of long-term trends of the signatures. The patterns change over time due to wear, seasonal or other conditional factors. FIGS. 4 and 5 show the fluctuations in the months of March (FIG. 4) and June (FIG. 5).

(6) FIGS. 6 and 7 schematically show an illustration of outliers/batches with abnormal behaviour, wherein such abnormal behaviour being can be detected based on their different signature. Good/normal batches can be marked as “good” by a self-learning/machine-learning unit or operators, so that the definition of the behaviour to be expected as “normal” becomes dynamic and long-term trends can be taken into account.

(7) FIGS. 8-11 schematically show further representations of the detection of abnormalities as a function of process variables (FIGS. 8-9), as well as their process analysis (FIG. 10) and recipe overview (FIG. 11).

(8) FIG. 12 shows schematically a mill installation 1, in which sensor data is measured and recorded during the process, e.g. every 3 minutes. In particular, it shows the measurement of measurement parameters 51 of the input product 5, such as the moisture content of the input product 5, and the measurement of the flour properties 61 and the yield 62 of the final product 6.

(9) For the purposes of the present invention, “product” is understood to mean a bulk material or a mass. For the purposes of the present invention, “bulk material” means a product in powder, granule or pellet form which is used in the bulk material processing industry, i.e. in the processing of grain, grain grinding products and grain final products of the milling industry (in particular grinding of common wheat, durum wheat, rye, maize and/or barley) or speciality milling (in particular husks and/or grinding of soya, buckwheat, barley, spelt, millet/sorghum, pseudocereals and/or legumes), the manufacture of feed for farm animals and pets, fish and crustacea, the processing of oilseeds, the processing of biomass and the manufacture of energy pellets, industrial malting and malt handling plants; the processing of cocoa beans, nuts and coffee beans, the manufacture of fertilisers, in the pharmaceutical industry or in solid chemistry. For the purposes of the present invention, “mass” is understood to mean a food mass, such as a chocolate mass or a sugar mass, or a printing ink, a coating, an electronic material or a chemical, in particular a fine chemical. For the purposes of the present invention, “processing a product” means the following: (i) the grinding, comminution and/or flaking of bulk material, in particular grain, grain grinding products and grain final products of the milling industry or speciality milling industry, as stated above, for which purpose the pairs of grinding rollers or flaking rollers described in more detail below can be used as a pair of rollers; (ii) the refinement of masses, in particular food masses such as chocolate masses or sugar masses, for which pairs of fine rollers can be used, for example; and (iii) wet grinding and/or dispersing, in particular of printing inks, coatings, electronic materials or chemicals, in particular fine chemicals.

(10) Grinding rollers within the meaning of the present invention are designed to grind granular ground material, which is usually carried out between a pair of grinding rollers by two grinding rollers. Grinding rollers, in particular the grinding rollers of the pair of grinding rollers according to the invention, usually have a substantially inelastic surface (in particular on their peripheral surface) which, for this purpose, can contain or consist of metal, for example steel, in particular stainless steel. There is usually a relatively firm and often hydraulically regulated grinding gap between the grinding rollers of the pair of grinding rollers. In many grinding installations, the grinding material is guided substantially vertically downwards through such a grinding gap. In addition, in many grinding installations, the grinding material is fed to the grinding rollers of a pair of grinding rollers by means of their gravity, wherein this supply can optionally be supported pneumatically. The grinding material is usually granular and moves as a fluid flow through the grinding gap. These properties distinguish a grinding roller and a grinding installation containing at least one such grinding roller, for example, from other rollers used in technology, which, for example, can be used to transport paper.

(11) At least one roller, in particular two rollers of a pair of grinding rollers of a grinding installation can be designed, for example, as a smooth roller or as a fluted roller or as a roller base body with screwed-on plates. Smooth rollers can be cylindrical or cambered. Fluted rollers can have different fluted geometries, e.g. roof-shaped or trapezoidal fluted geometries, and/or have segments attached to the peripheral surface. At least one roller, in particular both rollers of the pair of grinding rollers, in particular at least one grinding roller, in particular both grinding rollers of the pair of grinding rollers, can have a length in the range from 500 mm to 2000 mm and a diameter in the range from 250 mm to 300 mm. The peripheral surface of the roller, in particular the grinding roller, is preferably non-detachably connected to the roller body and in particular is formed integrally therewith. This allows a simple manufacture and reliable and robust processing, in particular grinding, of the product. The rollers can be designed with at least one sensor for recording measured values which characterise a state of at least one of the rollers, in particular both rollers of the pair of rollers. In particular, this can be a condition of a peripheral surface of at least one of the rollers, in particular both rollers of the pair of rollers. The state can be, for example, a temperature, a pressure, a force (force component(s) in one or more directions), wear, a vibration, a deformation (expansion and/or deflection path), a rotational speed, a rotational acceleration, an ambient humidity, a position or orientation of at least one of the rollers, in particular both rollers of the pair of rollers. The sensors can be designed, for example, as a MEMS sensor (MEMS: Micro-Electro-Mechanical System). The sensor is preferably in data connection with at least one data sensor, wherein the data transmitter is designed for the contactless transmission of the measured values of the at least one sensor to a data receiver. With the aid of the at least one data transmitter, the measured values can be transmitted contactlessly to a data receiver which is not part of the roller. The grinding installation can comprise further sensors and measuring units for detecting process or product or operating parameters, in particular measuring devices for measuring the current/power intake of one or more rollers. Among other things, the sensors can be (i) at least one temperature sensor, but preferably a plurality of temperature sensors for measuring the roller temperature or a temperature profile along a roller; (ii) one or a plurality of pressure sensors; (iii) one or a plurality of force sensors (for determining the force component(s) in one or a plurality of directions); one or a plurality of wear sensors; (iv) one or a plurality of vibration sensors, in particular for determining a winding, that is to say that the processed product adheres to the peripheral surface of the roller, which hinders processing, in particular grinding, at this position; (v) one or a plurality of deformation sensors (for determining an expansion and/or a deflection path); (vi) one or a plurality of rotational speed sensors, in particular for determining a standstill of the roller; (vii) one or a plurality of rotational acceleration sensors; (viii) one or a plurality of sensors for determining an ambient humidity, which is preferably arranged on an end face of the roller; (ix) one or a plurality of gyroscopic sensors for determining the position and/or orientation of the roller, in particular for determining the width of a gap between the two rollers of the pair of rollers, which is dependent on the position and/or orientation, and the parallelism of the rollers; and/or (x) one or a plurality of sensors for determining the width of a gap between the two rolls of the pair of rollers, in particular a grinding gap between the two grinding rolls of the pair of grinding rollers, for example a sensor disposed in an end face of the roller, in particular a MEMS sensor. Any combination of these is also possible. For example, a roller can contain a plurality of temperature sensors and deformation sensors. It is also possible and within the scope of the invention that all sensors are of the same type, that is to say, for example, they are designed as measuring units for measuring the power intake of one or a plurality of rollers.

(12) Here and below, wear is understood to mean the mechanical wear of the peripheral surface of the roller, in particular the grinding roller. In the prior art, such wear can be determined, for example, by a change in resistance caused by material removal on the peripheral surface. Alternatively or additionally, wear can be determined via a changed pressure and/or via a changed path length and/or via a changed electrical capacitance. If a unit contains only a single data transmitter, this unit can comprise at least one multiplexer which is disposed and designed for the alternate transmission of the measured values detected by the sensors to the data transmitter. The contactless transmission can take place, for example, by infrared radiation, by light pulses, by radio frequency signals, by inductive coupling or by any combination thereof. The contactless transmission of the measured values here and below always also includes the transmission of data which are obtained by appropriate processing of the measured values and which are therefore based on the measured values. For example, a unit with sensors can contain at least one signal converter, in particular at least one A/D converter, for converting the measured values detected by the at least one sensor. At least one signal converter can be assigned to each sensor, which converts the measured values detected by this sensor. The converted signals can then be fed to a multiplexer as already described above. If the signal converter is an A/D converter, the multiplexer can be a digital multiplexer. In a second possible variant, the signal converter can also be disposed between a multiplexer as described above and the data transmitter. In this case the multiplexer can be an analog multiplexer. A unit with sensors can comprise at least one printed circuit board (in particular a MEMS printed circuit board) on which one or a plurality of its sensors and/or at least one multiplexer and/or at least one signal converter and/or the at least one data transmitter and/or at least one energy receiver and/or at least one energy generator are disposed. The printed circuit board can contain measuring lines via which the sensors are connected to the multiplexer. Such a printed circuit board has the advantage that the components mentioned can be disposed on it in a very compact manner and that the printed circuit board can be manufactured as a separate assembly and, at least in some exemplary embodiments, can be replaced again if necessary. As an alternative to a printed circuit board, the sensors can also be connected to the data transmitter and/or the multiplexer via a cable harness. One or a plurality of the rollers of the grinding installation can contain at least one data memory, in particular an RFID chip. An individual identification of the roller, in particular, can be stored or is storable in this data memory, for example. Alternatively or additionally, at least one property of the roller, such as at least one of its dimensions and/or its camber, can be stored or is storable in the data memory. The data stored in the data memory are preferably also contactlessly transmitted. For this purpose, the roller can have a data transmitter. It is conceivable that the data of the data memory are transmitted by means of the same data transmitter, by means of which the measured values of the at least one sensor are transmitted according to the invention. Measuring devices with sensors can also contain a data processor integrated therein, in particular a microprocessor, an FPGA, a PLC processor or a RISC processor. This data processor can, for example, further process the measured values detected by the at least one sensor and then optionally transmit them to the data transmitter. In particular, the data processor can take over the function of the multiplexer and/or the signal converter described above in whole or in part. The microprocessor can be part of the printed circuit board also described above. Alternatively or additionally, the microprocessor can also perform at least one of the following functions: Communication with at least one data bus system (in particular management of IP addresses); printed circuit board memory management; control of energy management systems, in particular as described below; management and/or storage of identification features of the roller(s), such as geometric data and roller history; management of interface protocols; wireless functionalities. Furthermore, the measuring device, in particular the printed circuit board, can have an energy management system which can carry out one, a plurality or all of the following functions: (i) regular, in particular periodic, transmission of the measured values from the data transmitter; (ii) transmission of the measured values from the data transmitter only if a predetermined condition is met, in particular if a warning criterion described below is met; (iii) regular, in particular periodic, charging and discharging of a capacitor or an energy store. A grinding/product processing installation for processing a product, in particular the grinding installation for grinding ground material, contains at least one roller or pair of rollers, in particular one pair of grinding rollers. A gap is formed between the rollers of the pair of rollers. In particular, a grinding gap is formed between the grinding rollers of a pair of grinding rollers. In particular when grinding grinding material, the grinding material can be guided substantially vertically downwards through such a grinding gap. In addition, especially when grinding grinding material, this grinding material is preferably fed to the grinding rollers by means of its gravity, which can optionally be supported pneumatically. The product, in particular the bulk material, in particular the grinding material, can be granular and move as a fluid flow through the grinding gap. In particular, in the case of refining masses such as chocolate masses or sugar masses, this mass can alternatively also be guided from bottom to top through the gap formed between the rollers.

(13) The invention relates, for example, to product processing installations, in particular grinding installations for grinding grinding material. The product processing installation contains at least one roller or pair of rollers. In addition, the product processing installation can have at least one, in particular stationary, data receiver for receiving the measured values transmitted by the data transmitter of at least one of the rollers or pairs of rollers. The grinding system can be, for example, a single roller mill of a grain mill or an entire grain mill with at least one roller mill, wherein at least one roller mill contains at least one grinding roller as described above. However, the product processing installation can also be designed as (i) a flaking roll mill for flaking bulk material, in particular grain, grain milling products and grain final products from the milling industry or speciality milling industry, as stated above, (ii) a roller mill or a roll mill for the production of chocolate, in particular a roughing mill with, for example, two or five rollers, in particular two or five fine rollers, or an end fine roller mill, (iii) a roll mill for wet grinding and/or dispersing, for example printing inks, coatings, electronic materials or chemicals, in particular fine chemicals, in particular a three roller mill. The invention relates in particular to a method for operating a product processing installation as described above, in particular a grinding installation as described above. The method comprises a step in which, with the data receiver of the product processing installation, measured values are received by a data transmitter of at least one of the rollers or pairs of rollers. The data received in this way are then processed further. For this purpose, they can be fed to a control unit of the product processing installation, in particular the grinding installation, from where they can be passed on to an optional higher-level guidance system. With the help of the control unit and/or the guidance system, the entire product processing installation, in particular the entire grinding installation, or a part thereof can be controlled and/or regulated.

(14) A warning message, for example, is issued by the control unit or an electrical alarm signal is generated if a predefined warning criterion is met. The warning criterion can consist, for example, in that the measured value of at least one of the sensors exceeds a limit value predetermined for this sensor. In another variant, the warning criterion can consist in that the difference between the largest measured value and the smallest measured value, which are measured by a predetermined quantity of sensors, exceeds a predetermined limit value. If the warning criterion is met, a warning signal can be output (for example optically and/or acoustically) and/or the product processing installation can be brought to a standstill (for example by the control unit). In addition, the control unit can visualise the measured values acquired by the at least one sensor or data obtained therefrom. The product processing installation can contain a device for measuring particle sizes and their distributions downstream from a pair of rollers in terms of product flow. As a result, the measurement of the particle sizes and their distributions can be combined, for example, with a measurement of the state of wear and/or the roller contact pressure. This is particularly advantageous if the roller, in particular the grinding roller, is a fluted roller. As an alternative or in addition, a device for NIR measurement of the product flow, in particular of the grinding material flow, can also be disposed downstream of a roller, in particular a grinding roller. This is particularly advantageous if the rollers, in particular the grinding rollers, are smooth rollers. Due to the detection of the state of wear, both variants enable early planning of maintenance.

(15) With the product processing installation according to the invention, it is possible to objectively monitor the power intake of grinding rollers (individually or as a pair) continuously during the grinding process, for example of a product batch. Additional parameters can be measured and monitored. For example, the roller temperature or the interior temperature of the housing of the roller mill and/or the room temperature, i.e. the outside temperature, can also be included in the monitoring, since these temperature values have an influence on the temperature of the grinding rollers etc. The higher the contact pressure, the greater the energy requirement, i.e. the kilowatt consumption. With a higher contact pressure, more comminution energy is generated, which is partly released as heat to the product to be comminuted and also to the roller material. This means that the temperature inside the roller mill or a similar machine also increases. If the product curtain is even, the grinding work can be optimised with the help of the temperature that is set on the surface of the roller and recorded with temperature probes by changing an optimal temperature assigned to the product to be processed with the help of the contact pressure and/or the grinding gap adjustment. This change can take place both manually and fully automatically with the aid of a computer and/or a control, for example an SPC control (self-programmable control) or also PLC control (programmable logic control) (regulating device). The further monitored parameters can be assigned physical, technological or process-related limits assigned as necessary boundary conditions to be adhered to. The additional monitoring of such boundary conditions can lead to an improvement in the control behaviour and to a better product quality of the final products.

(16) According to the invention, the grinding installation 1 is regulated by an intelligent, self-adaptive regulation and control device 4 with self-optimised control of the mill installation 1 and the grinding line of a roller system of the mill installation 1. The grinding line comprises a plurality of processing units 2(B)/3(C), which, based on operational process parameters 411l, . . . , 411x, can each individually be controlled and individually regulated in their operation by means of the regulation and control device 4. A batch control with a defined processing sequence in the processing units 2(B)/3(C) can be regulated by means of an operational process recipe 411, wherein a defined quantity of a final product 6 is produced from one or a plurality of starting materials 5 with the measurement parameters 51 by means of the operational process recipe 411 with the measurement parameters 61 (611, . . . , 61x) and the yield 62. The processing units 2(B)/3(C) are controlled based on specific operational batch process parameters assigned to the operational process recipe. The regulation and control device 4 comprises a pattern recognition module for detecting operational process recipes 41 with multi-dimensional batch process parameter patterns 411l, . . . , 411x, wherein an operational process recipe 41 comprises, stored, at least one or a plurality of starting products 5, a defined sequence of a grinding process within the processing units 2(B)/3(C) of the grinding line, and operational batch process parameters 411l, . . . , 411x assigned to the respective processing units of the grinding line. The regulation and control device 4 comprises a storage device 43 for storing historical operational process recipes 431 with historical batch process parameters 431l, . . . , 431x, wherein the historical batch process parameters 431l, . . . , 431x of a process recipe 431 each define a process-typical, multi-dimensional batch process parameter pattern 432l, . . . , 432x of an optimised batch process in the standard range.

(17) When entering final product parameters and/or input product parameters of a new operational process recipe 411, closest batch process parameter patterns 432i are triggered and/or selected by means of pattern recognition of the pattern recognition module of one or more of the stored historical operational process recipes 432 based on the assigned multi-dimensional batch process parameter patterns 432l, . . . , 432x. The pattern recognition module can in particular comprise a machine-based neural network structure. The identification and recognition of the pattern then takes place, for example, as part of the network training. A training based on a neural network can, for example, only be based on historical pattern 432. The regulation parameters 411 of the mill installation 1 can be regulated on the basis of the updated neural network structure and optimisation oriented in particular towards at least one predefinable target variable. By means of the regulation and control device 4, based on the triggered closest batch process parameter patterns 432i, new batch process parameter patterns with new batch process parameters 411l, . . . , 411x for the entered new operational process recipe 411 are generated, wherein the processing units 2(B)/3(C) based on the generated operational process recipes with the assigned batch process parameters are correspondingly controlled and regulated by means of the regulation and control device 4. During the grinding process of the new operational process recipe 411, the operational process parameters are continuously monitored by means of the regulation and control device 4, wherein in the case of detection of an anomaly as a defined deviation of the monitored operational process parameters 411l, . . . , 411x from the specified operational process parameters 411l, . . . , 411x of the new operational process recipe 411, a warning signal is transmitted to an alarm unit. The batch process parameters can, for example, comprise at least the flows of one or a plurality of roller mills 2(B)/3(C) of the mill installation 1. The one or more roller mills can, for example, comprise at least fluted rollers (B passage) and/or smooth rollers (C passage). The batch process parameters can, for example, comprise at least the flows of all roller mills 2(B)/3(C) of the mill installation 1. Defined quality parameters 61 (611, . . . , 61x), for example, of the final product 6 and specific flour yield 62 as a function of the starting products 5 and/or its measurement parameters 51 can be determined by means of the process-typical batch process parameters of an optimised batch process in the normal range. The defined quality parameters 61 can, for example, at least include particle size distribution 611 and/or starch damage 612 and/or protein quality 613 and/or water content 614. The monitored batch process parameters 411l, . . . , 411x can, for example, at least include yield 62 and/or energy intake/consumption and/or throughput/machine running time. Continuous long-term changes in the monitored batch process parameters can be recorded by the regulation and control device during the grinding process, for example, when an anomaly is detected, wherein the defined deviation of the monitored operational process parameters from the generated operational process parameters of the new operational process recipe is determined as a function of the measured continuous long-term changes. The monitored batch process parameters can, for example, be transmitted from a plurality of regulation and control devices 4 according to the invention via a network to a central monitoring unit, wherein the plurality of regulation and control devices 4 are monitored and regulated centrally. Among other things, the invention has the advantage that it allows in a technically novel way the identification of long-term trends in production, the automated detection of abnormalities, the automated 24/7 (remote) monitoring and detection of the production parameters for (i) yield, (ii) energy, and (iii) throughput/machine running time, etc.

(18) In an embodiment variant, the currents of all roller mills 2(B)/3(C) can be viewed, e.g. divided into B passage (fluted rollers) and C passage (smooth rollers). For each recipe, there is a typical pattern 421 that determines the quality 61 of the final product 6 as a function of the raw material 5 and the previous process steps (particle size distribution 611, starch damage 612, protein quality 613, water content 614) and the specific flour yield 62. A change in the pattern 421 of the currents is automatically detected as an anomaly by the system 4 and a warning message is generated.

LIST OF REFERENCE NUMERALS

(19) 1 mill installation 2 processing units (B) 21, . . . , 23 fluted rollers 3 processing units (C) 31, . . . , 33 smooth rollers 4 regulation and control device 41 input parameter 411 operational process recipe 411l, . . . , 411x operational process parameter 421 pattern 412l, . . . , 412x batch parameter pattern 42 pattern recognition module 43 storage device 431 historical operational process recipe 431l, . . . , 431x historical operational process parameter 431i triggered closest process parameter 432 historical pattern 432l, . . . , 432x batch parameter pattern 432i triggered closest pattern 5 input products 51 measuring parameter input materials 6 final products 61 measuring parameter final products 611 particle size distribution 612 starch damage 613 protein quality 614 water content 62 specific yield