Patent Publication Number: US-2023144412-A1

Title: A method for controlling a food handling system

Description:
TECHNICAL FIELD 
     The invention is related to packaging technology. More particularly, it is related to controlling a food handling system comprising a number of food production units, by using an operator carried device. 
     BACKGROUND ART 
     Today it is common practice for operators to use pen and paper while collecting data during inspections and maintenance operations of packaging lines and processing lines. The inspections and maintenance operations are mainly performed in production halls and warehouses. Usually, the operators collect data following standard operating procedures at a plant level. An advantage by using pen and paper is that it provides a high level of flexibility. In case operating procedures change, and a different content is to be collected, this generally does not pose a problem when using pen and paper. Further, pen and paper is universally accepted. 
     A drawback with today&#39;s solution of using pen and paper is that it may be difficult to find the correct paper, with the correct information, as well as it may be difficult to manage different versions of the information. A yet further drawback is that it may be cumbersome to transform the information to e.g. digital data sources while the information is on a paper. To overcome the above stated drawbacks, the data may be manually transferred from the paper to a computer, a procedure which is both time consuming and ineffective. 
     As an alternative to the solution of using pen and paper, it is today also common practice to use computers instead. An advantage by using computers is that the operators do not need to transfer the collected information but are inserting the information in the correct format directly. This provides for a more efficient procedure of collecting and storing the data. Further, by using the computer, the risk of using an obsolete version of a form can be reduced. 
     Even though using the computers for collecting the data from the operators generally works well, there is a need for further improvement in terms of flexibility, in terms of data quality and in terms of responsiveness. 
     SUMMARY 
     It is an object of the invention to at least partly overcome one or more of the above-identified limitations of the prior art. 
     According to a first aspect it is provided a method for controlling a food handling system comprising a number of food production units by using an operator carried device. The method comprising: 
     receiving process data by a server, wherein the process data is extracted from the food handling system, wherein the process data comprises parameter values captured via sensors provided in the food production units, 
     requesting user input data by transmitting a user input data request to the operator carried device, 
     receiving the user input data via the operator carried device, 
     determining control data based on the process data and the user input data, 
     transmitting the control data to the food production units, and 
     updating settings in the food production units based on the control data. 
     By the term “operator carried device” is here meant a device configured to receive and analyze data, both the process data and the user input data. The device should be of a size able for the operator, also referred to as user herein, to carry while performing the inspections and maintenance operations in the production halls and warehouses. 
     By the term “process data” is here meant any data being manually or automatically collected by the sensors provided in the food production units. The process data may be real-time data, illustrating status of the food handling system in real time. According to non-limiting examples, the parameter values of the process data may comprise pressure, flow, produced packages per time unit etc. 
     By the term “user input data” is here meant data being manually or automatically input by a user, such as an operator of the food handling system, to the operator carried device. Further, the user input data can be quality parameter data for a package sample, e.g. data related to placement of cap compared to transversal sealing. 
     By the term “user input data request” is here meant a request that the user input data may respond to. According to a non-limiting example, the user input data request may be based on a request from e.g. the food handling system, a production manager, a shift leader or an alarm. 
     An advantage with the disclosed method using an operator carried device is that it is possible for the operator to carry the device at all time. This will provide for a more effective collection of data since the operator can collect the data in the correct format from the beginning without any need of transferring the data from a paper to a computer or running to a stationary computer to insert the data. Thus, having the operator carried, the responsiveness of the system can be improved since the user input data is made available quicker. Further, having the operator carried device, this can be customized for specific needs of a specific user, which will as an effect further increase responsiveness. 
     A further advantage is that the control data, used for updating the settings in the food production units, is based on both the process data, received from sensors within the food production units, but also on the user input data, received from the user. Thus, the settings are updated based on a combination of data, wherein both the process data and the user input data are quickly received, and hence, the settings may be quickly updated. The faster the settings may be updated, the easier it is to avoid problems that may occur based on incorrect settings of the food production units. Thus, the responsiveness may be improved, and a more reliable and flexible control of the food handling system may be achieved. 
     In addition, the user input data can be requested to fill any information gaps formed by the process data. For instance, in case the system identifies that there is not enough information about a particular part of the system for making a reliable conclusion about the condition of this part, the user input data request can be made such that the user input data addresses this particular part of the system. Hence, in addition, or instead of, to being used in combination, the user input data can be used as a complement to the process data. 
     By the present disclosure, it takes benefit of all collected data in order to provide for a reliable and efficient solution. Further, by taking benefit of all collected data, it may be possible for the operator to response to the user input data request. The user input data request may comprise a question or a request to send a command in real time to perform a check. The check may be based on a previous input provided by the same operator. The check may be based on a new condition at the plant level, e.g. a request coming from a production manager, a shift leader, an alarm or based on process data. Thus, the user input data request may be based on an automatically or a manually request. 
     Yet an advantage with the disclosed method is that it facilitates for a more efficient daily work routine for customers using the food handling system in combination with the operator carried device. 
     The user input data may comprise a package sample identification received via a code provided on a package sample by using a camera of the operator carried device. 
     By introducing the package sample identification in the user input data may provide for an improved traceability of packages. An advantage with improved traceability is that, if one package sample may be identified with a problem, it may be possible to trace the other package samples within the same batch, that may have been exposed to a similar problem. This in combination with the improved responsiveness of using the operator carried device provides for that insufficiently processed or packaged products can be detected quicker, which is e.g. important from a food safety perspective. 
     The method may further comprise determining the user input data request based on the process data. 
     An advantage by determining the user input data request based on the process data is that a dynamicity between the process data and the user input data may be achieved. 
     A further advantage, wherein the carried operator device being able to interact with other data stored on any database including the process data from the food production units, is that the user input data request may be up to date and requesting information relevant for the food handling system at the moment. Thus, there may less delay in the user input data request nor that the request may ask for information that may not be relevant any longer. 
     The method may further comprise receiving an operator identification, wherein the operator identification is determined by using the operator carried device. 
     An advantage with being able to identify the operator is a user interface of the operator carried device can be adjusted to specifically fit this operator. For instance, in case the operator is asked to perform a check for the first time, additional instructions may be provided on the screen to provide for that the check is made as intended. 
     The operator identification may be made by using biometric identification. For instance, face recognition and/or fingerprint recognition may be used. The operator may be identified at the same time as the device is unlocked. 
     The method may further comprise: 
     determining operator specific characteristics by using the operator identification and a historical user input database, and 
     adjusting the user input data based on the operator specific characteristics. 
     Since there may be individual differences among operators and different situations and events may be interpreted differently, it is possible by knowing the operator identity to use historical data linked to this operator for adjusting the user input data such that data from different operators can be compared more reliable. 
     The method may further comprise capturing a handwritten text using the operator carried device and transforming the handwritten text to the user input data. 
     The handwritten text may also be used for identifying the operator, either in itself or in combination with e.g. face recognition data. The handwritten text may also be used for determining a state of the operator when entering the user input data, e.g. it can be detected from the handwritten text if the operator is stressed out or calm. This is made possible by comparing with historical data for the specific operator, but also by using general learnings on how handwritten text reflect a state of the person writing it. 
     By the term “capturing” or “collecting” is here meant obtaining information in a general sense. The information can be handwritten text, text entered using a key board, speech, images captured using the camera of the operator carried device, etc. 
     By the term “handwritten text” is here meant that the user may input the user input data to the operator carried device by handwriting the information on the operator carried device. The user may also provide the user input data by handwriting the information on a paper and take a picture of the paper. The handwritten text on the operator carried device and the handwritten text on the paper may be transformed to the user input data, such that the user input data may comprise the handwritten text. 
     An advantage by allowing the operator to using handwriting on the operator carried device may provide for a simplified and flexible way of input information to the operator carried device. 
     The method may further comprise: 
     extracting handwriting text features from the handwriting text of the user input data; 
     receiving a handwriting text template; 
     extracting handwriting text template feature from the handwriting text template; 
     comparing the handwriting text features and the handwriting text template features; and 
     if a match is found, requesting for the operator identification corresponding to the handwriting text template features. 
     The method may further comprise: 
     analyzing the handwriting text and if the handwriting text is linked to one of a number of pre-determined options;
         confirming the handwriting text;   converting the handwriting text to digital text; and   storing the digital text on an onsite database;       

     else
         performing one or more modifications to the handwriting text;   analyzing the modified handwriting text and if the modified handwriting text is linked to one of the numbers of pre-determined options;   confirming the modified handwriting text;   converting the modified handwriting text to digital text; and   storing the digital text on the onsite database.       

     By the term “modifications” is here meant modify the user input data such that it may be linked to one of a number-of pre-determined options. According to one non-limiting example, the modification may be to correct a misspelled word. The modifications may be manually performed by the user. The modifications may be automatically performed by the operator carried device. 
     The method may further comprise: 
     comparing the user input data with reference user input data; and 
     if the user input data differs from a predetermined input range associated to the reference user input data, stopping the food handling system. 
     An advantage by comparing the user input data with reference user input data is that it may be possible to identify if the user input data comprises relevant and correct information. It may further be possible to identify if the user input data may have been input in a correct way. 
     A further advantage by analyzing the user input data in the disclosed way is that it may provide a lot of value and knowledge about the customers work at the plant level. It may also provide knowledge about how the customers take decision. 
     A yet further advantages is that it may be possible to analyze what the content in which a problem happened may be. 
     Thus, it may provide for a more user-friendly and efficient monitoring service, preventing problems to occur and being one step ahead for the customers. 
     Thus, if the user input data is out of range, it may be possible to stop the food handling system before a problem may occur. It may also be possible to create an alert to other operators of the system in order for them to take action. It may be possible to analyze the information such that a maintenance operation may be performed preventively. 
     The step of requesting user input data may further comprise: 
     providing a user of the food handling system with a user guide; and 
     guiding the user, based on the user guide, through a process related to the user input data request. 
     By the term “user guide” is here meant a template or a chat bot, wherein the chat bot is using artificial intelligence. Thus, the user guide should be interpreted as a guide for the user such that the user inputs the user input data in a correct way but also that the user input data is relevant data compared to the request. The user guide may be guiding the user through the process. The template may comprise text boxes and grid control to guide the user where to type and what to type. The template may be updated over time based on the process data or based on the user input data request. 
     The user operator carried device may comprise the user guide. 
     By introducing the user guide that may be guiding the user through the process may provide for a more efficient process due to that the user known what to do. 
     The operator carried device may be a handheld device or a wearable device. 
     By the term “handheld device” is here meant any device the operator is able to carry, e.g. a tablet or a mobile phone. 
     By the term “wearable device” is here meant any device the operator may be able to wear, e.g. smart glasses, a smart watch or other portable devices with a camera. 
     If the carried device may be a wearable device, the method may further comprise: 
     capturing the handwriting text using the wearable device, wherein the wearable device is configured to convert the handwriting text to digital text; and 
     storing the digital text to the onsite database. 
     According to a second aspect, a server configured to control a food handling system comprising a number of food production units is provided. The server may comprise a transceiver, a control circuit and a memory, wherein 
     the transceiver may be configured to:
         receiving process data, wherein the process data is extracted from the food handling system, wherein the process data comprises parameter values captured via sensors provided in the food production units;   requesting user input data by transmitting a user input data request to the operator carried device;   receiving user input data from the operator carried device; and   transmitting control data to the food production units; and the control circuit is configured to execute:   a determination function configured to determine the control data based on the process data and the user input data: and   an updating function configured to update settings in the food production units based on the control data.       

     According to a third aspect, a system for controlling a food handling system comprising a number of food production units is provided. The system comprising: 
     the food handling system, wherein the food handling system comprises the number of food production units equipped with sensors; 
     an operator carried device configured to transmit user input data; 
     a server according to the second aspect; 
     an onsite database configured to store the user input data; and 
     an offsite database. 
     Still other objectives, features, aspects and advantages of the invention will appear from the following detailed description as well as from the drawings. 
     Effects and features of the second and third aspects are largely analogous to those described above in connection with the first aspect. Embodiments mentioned in relation to the first aspect are largely compatible with the second and third aspect. It is further noted that the inventive concepts relate to all possible combinations of features unless explicitly stated otherwise. A further scope of applicability of the present invention will become apparent from the detailed description given below. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the scope of the invention will become apparent to those skilled in the art from this detailed description. 
     Hence, it is to be understood that this invention is not limited to the particular component parts of the device described or steps of the methods described as such device and method may vary. It is also to be understood that the terminology used herein is for purpose of describing particular embodiments only and is not intended to be limiting. It must be noted that, as used in the specification and the appended claim, the articles “a”, “an”, “the”, and “said” are intended to mean that there are one or more of the elements unless the context clearly dictates otherwise. Thus, for example, reference to “a unit” or “the unit” may include several devices, and the like. 
     Furthermore, the words “comprising”, “including”, “containing” and similar wordings does not exclude other elements or steps. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Embodiments of the invention will now be described, by way of example, with reference to the accompanying schematic drawings, in which 
         FIG.  1    illustrates a system for controlling a food handling system. 
         FIG.  2    illustrates a server configured to control a food handling system. 
         FIG.  3   a - c    illustrates an operator carried device comprising a user guide. 
         FIG.  4    is a flow chart illustrating a method for controlling a food handling system. 
     
    
    
     DETAILED DESCRIPTION 
     With reference to  FIG.  1   , a system  100  for controlling a food handling system  102  is illustrated by way of example. The system  100  may comprise the food handling system  102 , an operator carried device  106  and a server  108 . The server  108  will be discussed in more detail in connection with  FIG.  2   . The system  100  may further comprise an onsite database  114  and an offsite database  116 . 
     Each device of the system  100  may be communicatively connected to any other device of the system  100 . Thus, each device may be configured to transmit information to, or receive information from, any other device in the system. According to one non-limiting example, the food production units  104  may be configured to transmit information to the operator carried device  106 . Each device of the system  100  may be communicatively connected to other devices, outside the system  100 , as well. In this way, for instance, information from other plants may also be considered. Even though the different devices may be communicatively connected to each other, there may situations where information is not shared. For instance, business critical data may be chosen not to be shared. By using the onsite database  114  and the offsite database  116  it is made possible to hold the business-critical data in the onsite database  114  and data that can be shared with others in the offsite database  116 . For instance, data related to handwriting recognition may be relevant to share with others in order to achieve sufficient data for making relevant conclusions. 
     The purpose of the system  100  is to facilitate collecting data at a plant level comprising the food handling system  102 . A further purpose of the system  100  is to simplify the storing of data collected from the plant level comprising the food handling system  102 . Further, the system  100  may provide for an efficient and flexible way of collecting and storing data. 
     The food handling system  102  may comprise a number of food production units  104 . As illustrated in  FIG.  1   , the food handling system  102  comprises five food handling units  104 . However, it should be understood that the food handling system  102  may comprise less than five food production units  104 . It should also be understood that the food handling system  102  may comprise more than five food production unit  104 . According to one non-limiting example, the food production units 104  may be packaging machines and/or processing lines. Thus, the food production units  104  may be configured to process food product, e.g. milk or juice, or producing food product packages from packaging material. 
     The food production units  104  may be equipped with sensors  110  for collecting process data from the food production units  104 . The process data may be extracted from the food handling system  102 . The process data may comprise parameter values captured via the sensors  110 . The process data may be real-time data collected from the food production units  104 . According to non-limited examples, the process data may comprise information related to the food production units  104 , the food product or the packaging material. Thus, the process data may comprise information relating to pressure, flow, number of packages produced per time unit, vibrations, temperature, etc. The food production units  104  may be configured to transmit the process data, collected by the sensors  110 , to the operator carried device  106 . The food production units  104  may be configured to transmit information, collected by the sensors  110 , to the server  108 . An advantage obtained if the food production units  104  are transmitting the information to the operator carried device  106  is that the responsiveness may be decreased compared to if the information is transmitted via the server  108  to the operator carried device  106 . By directly transmitting information from the sensors to the operator carried device or via the server  108 , it is made possible to provide sensor output that may not be supported by a control system. Put differently, information about status of the system may be by-passed the control system. An advantage with this is that new additional features in the sensors  110  can easily be utilized. 
     The food production units  104  may be wired or wireless connected to the operator carried device  106  and to the server  108  in order to transmit information therebetween. 
     The operator carried device  106  may be equipped with a camera  112  and a screen. The operator carried device  106  may be configured to receive a user input data request. The user input data request may be based on the process data collected by the sensors  110  provided in the food production units  104 . Put differently, the user input data request can be dynamically determined based on the process data. In this way, the user input data can be used for complementing the process data. The user input data request may be based on a request from a device or data outside the system  100  as well. 
     The operator carried device  106  may be configured to receive user input data from an operator of the food handling system  100 , wherein the user input data may be based on the user input data request. The user input data may comprise free text. The user input data may be predetermined text or text alternatives. The user input data may comprise handwriting text or digital text. According to one non-limiting example, the user input data may comprise package sample identification received via a code provided on a package sample by using the camera  112  of the operator carried device  106 . 
     The operator carried device  106  may further be configured to preview the user input data, wherein the user may accept or reject the user input data. The operator carried device  106  may allow the user to perform modifications of the user input data, which is further illustrated in  FIG.  3   c   . The modification of the user input data may be performed manually, by the user, or automatically, by the operator carried device  106 . 
     The operator carried device  106  may comprise a user guide. The user guide may be configured to guide the user, i.e. the operator, through a process related to the user input data request. The user guide may be a template or a chat bot. The user guide may be based on the process data. The user guide may be based on the user input data request. Thus, the user guide may indicate what type of information the user input data should comprise. If the user input data may comprise information related to e.g. pressure, the user guide may indicate what type of unit the user input data should have. The user guide will be discussed in more detail in connection to  FIGS.  3   a   - c.    
     The operator carried device  106  may further be configured to determining an operator identification. According to one non-limiting example, the operator identification may be made by using biometric identification. The operator carried device  106  may further be configured to determine operator specific characteristics by using the operator identification and a historical user input database. The user input data may be adjusted based on the operator specific characteristics. 
     The operator carried device  106  may be configured to transmit information to the food handling system  102  and to the food production units  104 . The operator carried device  106  may further be configured to transmit information to the server  108 . The operator carried device  106  may further be configured to transmit information to onsite database  114  and the offsite database  116  for storing information thereon. 
       FIG.  2    illustrates a schematic view of the server  108 . The server  108  may be configured for controlling the food handling system  102 . The server  108  may comprise a transceiver  202 , a control unit  204  and a memory  208 . 
     The transceiver  202  may be configured to enable the server  108  to communicate with other devices, such as the food production units  104  and the operator carried device  106 , but also the onsite database  114  and the offsite database  116 . The transceiver  202  may be configured to receive the process data, wherein the process data may be transmitted from the food production units  104  or from the sensors  110  provided in the food production units  104 . The transceiver  202  may be configured to transmit a user input data request to the operator carried device  106 . The transceiver  202  may be configured to receive user input data from the operator carried device  106 . 
     The control circuit  204  may be configured to perform control of functions and operations of the server  108 . The control circuit  204  may include a processor  206 , such as a central processing unit (CPU). The processor may be configured to execute program code stored in the memory  208  in order to perform functions and operations of the server  108 . 
     The control circuit  204  may execute a determination function  210 . The determination function  210  may be configured to determine the control data based on the process data and the user input data. 
     The control circuit  204  may execute an updating function  212 . The updating function may be configured to update settings in the food production units  104  based on the control data. 
     The control circuit  204  may execute a data analyzing function  216 . The data analyzing function  216  may be configured to analyze the process data and the user input data. The data analyze function  216  may further be configured to analyze the control data based on the process data and the analyze data. According to one non-limiting example, the data analyzing function  216  may be configured to compare the user input data with a user input data reference. If the user input data differs from a predetermined input range associated to the reference user input data, the data analyzing function  216  may be configured to stop the food handling system  102 . Alternatively, or in combination, if the user input data differs from the predetermined input range associated to the reference user input data, the data analyzing function  216  may be configured to transmit an alarm signal to the operator carried device  106  indicating a mismatch. Thus, the data analyzing function  216  may be configured to analyze if the data is valid data. 
     With reference to  FIGS.  3   a   - c,  an operator carried device  106  comprising a user guide is illustrated by way of example. In  FIGS.  3   a   - c,  the user guide is a template configured for guiding the user through a process. 
       FIG.  3   a    illustrates three boxes in which the user may input the user input data, either using handwritten text or digital text. Thereafter, it may be possible to preview the user input data or to save the user input data. 
       FIG.  3   b    illustrates the same view as in  FIG.  3   a   , but after the user input data has been received in the three boxes, wherein the user input data comprises handwritten text. Allowing the user to use handwritten text instead of digital text simplifies the writing on the operator carried device  106 . Thus, this provides for a more user-friendly and flexible way of collecting data. The operator carried device  106  may be configured to allow the user to handwrite alphanumerical text with a stylus but also punctuation marks, e.g. a question mark, exclamation point, period, comma, colon and semicolon. Thus, the operator carried device  106  may allow the user to input user input data comprising free text. The operator carried device  106  may allow the user to input user input data comprising predetermined text or text alternatives. The operator carried device  106  may be configured to preview the user input data, wherein the user may accept or reject the user input data. The operator carried device  106  may allow the user to perform modifications of the user input data, which is further illustrated in  FIG.  3   c   . The modification of the user input data may be performed manually, by the user, or automatically, by the operator carried device  106 . 
     As illustrated in  FIG.  3   c   , the operator carried device  106  may be configured to modify the handwritten text. As further illustrated in  FIG.  3   c   , the operator carried device  106  may be configured to convert handwritten text to digital text. The operator carried device  106  may be configured to store the digital text on the onsite database  114  or the offsite database  116 . The digital text may be configured to be stored on the operator carried device  106 . 
     To further facilitate or as an alternative, the user input data may be input as speech. By having a microphone in the operator carried device and a speech recognition software, the user may input using his voice. This may be the sole way of providing the user input data or it may be used in case the handwriting recognition software has misinterpreted the handwriting, i.e. as a back up to using handwriting recognition. 
     Alternatively, or in combination, the user guide may be a chat bot for guiding the user through the process. Upon that may be the case, the operator carried device  106  may be connected to a further operator carried device, wherein the further operator carried device may be a smart pencil. If the operator carried device  106  and the further operator carried device may be connected, the operator may be able to write the user input data on a paper using the further operator carried device and the operator carried device  106  may simultaneously reproducing the handwritten text. 
     Alternatively, or in combination, the user may be configured to use a pen and paper and thereafter capture a picture of the paper using the camera  112  of the operator carried device  106 , wherein the operator carried device  106  may be configured to convert the handwritten text to digital text. 
     Alternatively, or in combination, if the operator carried device  106  is a wearable device, e.g. smart glasses, the wearable device can be configured to convert handwritten text to digital text. Thus, the wearable device may be configured to capture a picture comprising the handwritten text. The text capturing with the wearable device may be automatically or manually trigged by the user. 
     The concept presented above may be described as a general method as follows: 
     A method for controlling the food handling system  102  comprising a number of the food production units  104  by using the operator carried device  106 , the method comprising: 
     connecting the operator carried device  106  to the number of food production units  104 ; 
     receiving process data by the server  108 , wherein the process data is extracted from the food handling system  102 , wherein the process data comprises parameter values captured via sensors  110  provided in the food production units  104 ; 
     generating a user input data template based on the process data; 
     receiving the user input data based on the user input data template via the operator carried device, wherein the user input data comprise handwritten text on the operator carried device  106 ; 
     converting the handwritten text to digital text; and 
     storing the digital text. 
     The method may further comprise: 
     determining control data based on the process data and the user input data; 
     transmitting the control data to the food production units  104 , and 
     updating settings in the food production units based on the control data. 
     With reference to  FIG.  2   , if the user input data may comprise handwritten text, the control circuit  204  may execute the recognition function  214 . The recognition function  214  may be configured to extract handwritten text features from the user input data that may comprise handwritten text. The recognition function  214  may further be configured to receive a handwritten text template and to extract handwritten text template features from the handwritten text template. The recognition function  214  may further be configured to compare the handwritten text features with the handwritten text template features. If a match is found between the handwritten text features and the handwritten text template features, the recognition function  214  may further be configured to request for the operator identification corresponding to the handwritten text template features. 
     An advantage by comparing the handwritten text features with the handwritten text template features may be that it provides for an analyze configured to determine whether the user is authorized as the valid user and if the user input data should be accepted. 
     With reference to  FIG.  2   , if the user input data may comprise handwritten text, the control circuit  204  may execute a handwritten text analyzing function  218 . If the user input data comprises handwritten text, the handwritten text analyzing function  218  may be configured to analyze the handwritten text. If the handwritten text may be linked to one of a number of pre-determined options, the handwritten text analyzing function  218  may be configured to confirm the handwritten text, convert the handwritten text to digital text and store the digital text. If the handwritten text may not be linked to one of a number of pre-determined options, the handwritten text analyzing function  218  may be configured to perform modification to the handwriting text and analyze the handwritten text. If the modified handwritten text may be linked to one of a number of pre-determined options, the handwritten text analyzing function  218  may be configured to confirm the modified handwritten text, convert the modified handwritten text to digital text and store the digital text. 
     Thus, the handwritten text analyzing function  218  may be configured to analyze the handwritten text and verify that the handwritten text may be written in a correct format. According to one non-limiting example, the handwritten text analyzing function  216  may be configured to perform a grammar check. 
     In  FIG.  4    it is presented a flow chart illustrating a method  400  for controlling the food handling system  102  comprising the number of food production units  104  by using the operator carried device  106 . According to one non-limiting example, the operator carried device  106  may be a handheld device, e.g. a tablet or a mobile phone. According to yet one non-limiting example, the operator carried device  106  may be a wearable device, e.g. smart glasses or a smart watch. 
     In a first step S 402 , process data can be received from the server  108 . The process data can be extracted from the food handling system  102 . The process data can comprise parameter values captured via sensors  110  provided in the food production units. 
     In a second step S 404 , user input data can be requested by transmitting the user input data request to the operator carried device  106 . Optionally, the second step S 404  may comprise determining the user input data request based on the process data. Optionally, the second step S 404  may further comprise providing the user of the food handling system  102  with a user guide and guiding the user, based on the user guide, through a process related to the user input data request. 
     In a third step S 406 , the user input data can be received via the operator carried device  106 . In a fourth step S 408 , control data based on the process data and the user input data can be determined. In a fifth step S 410 , the control data can be transmitted to the food production units  104 . In a sixth step S 412 , settings in the food production units  104  can be updated based on the control data. 
     Optionally, the method  400  may further comprise receiving an operator identification. The operator identification may be determined by using the operator carried device  106 . According to one non-limiting example, the operator identification may be made by using biometric identification. Optionally, the method  400  may further comprise determining operator specific characteristics by using the operator identification and a historical user input database. The user input data may be adjusted based on the operator specific characteristics. 
     Optionally, the method  400  may further comprise capturing a handwritten text using the operator carried device  106  and transforming the handwritten text to the user input data. 
     Optionally, if the user input data may comprise handwritten text, the method  400  may further comprise extracting handwriting text features from the handwriting text of the user input data. Receiving a handwriting text template. Extracting handwriting text template feature from the handwriting text template. Comparing the handwriting text features and the handwriting text template features. If a match is found, requesting the operator identification corresponding to the handwriting text template features. Thus, if the match is found, the user is authorized as a valid user and the user inputs may be used for updating the settings. 
     Optionally, if the user input data may comprise handwritten text, the method  400  may further comprise analyzing the handwriting text. If the handwriting text may be linked to one of a number of pre-determined options, the method  400  may further comprise confirming the handwriting text, converting the handwriting text to digital text; and storing the digital text on an onsite database. If the handwritten text may not be linked to one of a number of pre-determined options, the method  400  may further comprise performing modifications to the handwriting text and analyzing the modified handwriting text. If the modified handwriting text may be linked to one of the numbers of pre-determined options, the method  400  may further comprise confirming the modified handwriting text, converting the modified handwriting text to digital text and storing the digital text on the onsite database. 
     Optionally, the method  400  may further comprise comparing the user input data with reference user input data. Upon the user input data may differ from a predetermined input range associated to the reference user input data, the method  400  may further comprise stopping the food handling system  102 . 
     Optionally, if the user input data may comprise handwritten text and if the operator carried device  106  may be the wearable device, the method  400  may further comprise capturing the handwritten text using the wearable device, wherein the wearable device may be configured to convert the handwritten text to digital text and storing the digital text. 
     Thus, the method  400  may be for controlling the food handling system  102  by receiving and processing different type of data, such that the process data and the user input data. The method  400  may further control the food handling system  102  by analyzing the user input data. 
     From the description above follows that, although various embodiments of the invention have been described and shown, the invention is not restricted thereto, but may also be embodied in other ways within the scope of the subject-matter defined in the following claims.