in the following paragraphs the invention will now be explained in more detail with an example embodiment using fig1 . it shows in a block circuit diagram the mode of action of the components and operating elements for performing the procedure in accordance with the preferred embodiment , with reference to a field - end management system . then on reaching the turning sector in the first turning event all data corresponding to actuation by the operator of control switches arranged in one level in the operator &# 39 ; s working zone are recorded and stored in the on - board computer ( 1 ). in particular , the following data are stored and evaluated : route data ( i . e ., the path traversed ), operation of the steering , the manner of driving ( i . e ., the speed driven , changes of speed , reduction in speed ), variable , automatic , speed - controller values , the speed of the pto shaft coupled to the mounted implement , the position of the lifting gear and mode of working of the mounted implement including the changes in speed and direction of travel and the complete turning event for the agricultural utility vehicle . the turning event includes time , path , position and other event - relevant data for the coupled load or a coupled , mounted implement . the data are collected in cycles and displayed to the operator on a video display unit ( vdu ) screen or other display of the on - board computer ( 1 ). by means of the fems invoke key ( 10 ), activation of the fems mode ( so - called learning mode ) occurs and it begins with recording and display of the individual event - related data for the individual working cycles which run alongside each other or after each other . by pressing the fems store key ( 12 ), the individual working cycles are confirmed for correct execution and thus the course of the entire field - end management , e . g . a turning procedure at the field end , is stored step - by - step . timing of the individual steps can be varied . through the timing , the quantity of information is restricted and is manageable by the operator . the fems on / off key ( 11 ) enables the fems mode to be switched off if required , generally or during field - end management . in order to review the stored field - end management , the second turning event at the same field end is also stored with the same timing and in the same manner and the individual steps are likewise displayed on the vdu screen of the on - board computer ( 1 ). when doing so , the operator can compare the individual data and steps directly and avoid errors or optimize the turning event if necessary . this optimized turning event is then repeatable automatically as often as one wants by pressing the field end management key ( 10 )( fems — on / off ). but since the turning event differs often only slightly viewed over the whole width of the field , the operator can fade out or skip over individual items of the drive management at the field end , if required , by means of the fems transfer key ( 13 ). if the automatic field end management is switched on , the individual , automatically running working steps are displayed on the vdu screen . thus at any time the operator is in a position to intervene via the appropriate keys . with appropriate programming the on - board computer ( 1 ) is also in a position to determine an optimized turning event from more than two turning events and to integrate this into the field - end management with appropriate command inputs . this can take place for example also in the stand of the vehicle , if the recorded and stored data from two turning events are displayed on the on - board computer ( 1 ) and via appropriate operating keys a selection and switching through of the individual working steps occurs . also an automatic track recognition and track following is possible without problems by means of the camera system in accordance with an embodiment , in that the tracks of preceding runs are monitored and the actual track is corrected and adjusted accordingly by means of the steering . it is an advantage of the preferred embodiment that the function of drive management and / or field - end management is switchable by the operator at the field end optionally as a whole or in run blocks , which consist of several individual combined working steps , and / or in timed individual steps . in the public traffic space , i . e . when it has been determined through the gps that the agricultural utility vehicle has reached the public traffic space , the drive management system is automatically blocked . an appropriate , conventional gps navigation system can be implemented in the on - board computer ( 1 ), which at regular intervals of time determines location via a gps receiving and transmitting unit including an antenna ( 30 ). for activating or switching off this system the implementation key ( 15 ) is arranged on the control panel . preferably the time of reaching an intersection when a virtual grid that has been laid out over the entire surface of the agriculturally useful area exists is suitable for automated determination of the vehicle &# 39 ; s location . for recognition of obstacles both a surroundings - scanning device ( 33 ), e . g ., a laser scanner , also at least one movement - reporting sensor ( 34 ) can be arranged at an appropriate place on the agricultural utility vehicle . the movement - reporting sensor ( 34 ) can be arranged at several suitable points , such as at the outer edges or the protective covers of the agricultural machine and on the mounted implement . these signals can be coupled into the field - end management system via a special program . on overlapping of the signals the drive of the vehicle is disengaged and accordingly it is automatically braked briefly by means of suitable actuators . for a low - level signal , only the display on the vdu screen and the emission of an acoustic signal , which for example on approaching alters the pitch and loudness , are programmable . the signal display and / or evaluation take place via at least one arranged acoustic signaling device ( 31 ) or an optical signaling device ( 32 ). also coupling of the individual signaling systems is possible . at defined intervals the operator preferably must press a dead man &# 39 ; s push - button ( 16 ) arranged in the operating zone . if the dead man &# 39 ; s push - button ( 16 ) is not pressed at all or not within a particular time , e . g . after it lights up , the automatic field - end management system is automatically cancelled and the vehicle comes to a standstill and the coupled load or the relevant mounted implement is also disengaged . this dead man &# 39 ; s push - button ( 16 ) can also be used in public traffic spaces . in addition , the utility vehicle can be switched off quickly by the operator manually via an emergency push - button ( 14 ). in doing so both stopping of the utility vehicle itself and also uncoupling of the driven implements from the relevant drive is effected . this function can also be made variable in its actions . for this only the relevant programming needs to be altered . as further operating keys for controlling the drive management , in the operating zone of the operator there are arranged a key for controlling and setting the lower value of the automatic speed controller ( 21 ) and a key for controlling and setting the upper value of the automatic speed controller ( 22 ). thus it is possible to control the travelling speed automatically . further optimization can be achieved by means of the key for controlling slippage ( 25 ) and the key for controlling the all - wheel drive ( 26 ). likewise the control of the mounted implements can occur via a key for controlling the accessory control devices ( 23 ). thus , optimal settings for the mounted implements can be produced . by means of the key for engine speed ( 20 ) and the key for controlling the gearbox ( 24 ), a consumption - optimized control of the drive management is adjustable . on the agricultural utility vehicle a camera receiving and control unit for monitoring of movable and / or immovable obstacles is installed as an additional monitoring unit . their monitoring signals can , according to the process in accordance with the invention , likewise be included in the control of the field - end management system , in that these signals are brought into a suitable form for display , taken into account in the on - board computer with appropriate priority and can trigger appropriate control signals to the individual actuators of the agricultural utility vehicle . the individual actuators are connected with the on - board computer ( 1 ) via a can bus ( 36 ), which forms the interface for signal input and signal output to the individual devices and actuators of the agricultural utility vehicle . the accessory control device ( 41 ), the gearbox ( 42 ), the slippage control device ( 43 ), the differential lock ( 44 ) and the all - wheel drive are cited here as possible actuators ( connection is not shown in fig1 ). furthermore however , all the actuators are connected also directly with the on - board computer ( 1 ), e . g . for the purpose of monitoring . the same can be applied to the mounted implement ( 50 ) and its associated actuators , which are connected both via an iso bus ( 37 ) and also directly to the on - board computer . list of reference terms 1 on - board computer with vdu , exchangeable data medium , operating panel and radio interface 10 fems - invoke key 11 fems on / off 12 fems storage key 13 fems transfer key 14 emergency push - button 15 implementation key 16 dead man &# 39 ; s push - button 20 key for controlling engine speed 21 key for controlling the lower value of the automatic speed controller 22 key for controlling the upper value of the automatic speed controller 23 key for controlling accessory control devices 24 key for controlling the gearbox 25 key for controlling slippage 26 key for controlling the all - wheel drive 30 gps receiving and transmitting unit including antenna 31 acoustic signaling device 32 optical signaling device 33 surroundings - scanning device 34 movement reporting sensors 35 camera receiving and camera control unit 36 can bus to signal input and output to devices and actuators of the agricultural utility vehicle 37 iso bus to signal input and output to the coupled load or to mounted implements and associated actuators 40 engine 41 additional control device or devices 42 gearbox 43 slippage control unit 44 differential lock 45 all - wheel drive 50 mounted implement
an agricultural utility vehicle includes a computer to execute the steps of storing data representing steering direction , position and speed of the agricultural vehicle ; recognizing repeated drive events wherein each drive event comprises a plurality of serially performed functions including changing steering direction , changing speed and changing lift position of a hitch of the agricultural utility vehicle ; displaying each function on a screen and enabling a user to skip functions and execute subsequent functions ; executing the functions to automatically control the vehicle on private areas , which are determined in accordance with means for sensing position ; blocking execution of the functions in public areas ; deactivating control when obstacles are encountered , wherein the obstacles are recognized by way of signals received from cameras mounted on the agricultural vehicle ; and periodically prompting a user for input .