Agricultural toolbar apparatus, systems and methods

Abstract

Systems, methods, and apparatus for shifting weight between a tractor and toolbar and between sections of the toolbar, for controlling operative height of a toolbar and sections of a toolbar and for folding a toolbar between a work position and a transport position. A ground engaging wheel and an actuator are coupled to the toolbar. In one embodiment, a fluid control system is responsive to a command signal to modify the actuator pressure such that the actuator pressure corresponds to a desired pressure.

1 . A planter monitoring system comprising:
 a toolbar;   one or more row units, each row unit attached to the toolbar via one or more linkages;   a sensor mounted on the toolbar and attached to the one or more linkages via an arm; and   a row control module in communication with the sensor,   wherein the row control module is configured to evaluate signals from the sensor to determine ride quality of the one or more row units.   
     
     
         2 . The system of  claim 1 , wherein the arm includes a first arm section extending from the sensor substantially parallel with the one or more linkages and a second arm section extending from the first arm section the second arm section substantially perpendicular to the first arm section. 
     
     
         3 . The system of  claim 1 , wherein the sensor is a voltage sensor. 
     
     
         4 . The system of  claim 1 , wherein stable signal from the sensor indicates a high ride quality and wherein an unstable signal from the sensor indicates a low ride quality. 
     
     
         5 . The system of  claim 1 , further comprising a display in communication with the row control module, wherein the display presents ride quality information to a user. 
     
     
         6 . The system of  claim 1 , further comprising a supplemental downforce system, wherein a high ride quality indicates the supplemental downforce system is operating optimally and wherein a low ride quality indicated the supplemental downforce system is operating sub-optimally. 
     
     
         7 . The system of  claim 1 , wherein the sensor signal varies with vertical movement of the one or more row units as a planter traverses a field. 
     
     
         8 . The system of  claim 1 , further comprising a set position for triggering the one or more row units to turn off or on, wherein the set position is a particular signal from the sensor such that when the particular signal is sent the one or more row units turn off or on. 
     
     
         9 . The system of  claim 8 , wherein the set position is a particular voltage indicative of a certain position of the one or more row units relative to the toolbar or terrain. 
     
     
         10 . A planter comprising:
 a toolbar;   at least one row unit, each row unit engaged with the toolbar via a parallel linkage;   a sensor fixedly attached to the toolbar and further engaged with the parallel linkage via an arm; and   a processor in communication with the sensor for receiving sensor signals,   wherein the sensor signals indicate the positions of the at least one row unit relative to the toolbar.   
     
     
         11 . The planter of  claim 10 , wherein the arm comprises:
 a first section, wherein the first section is attached to the sensor and is substantially parallel to the parallel linkage, and   a second section, wherein the second section is attached to first section and the parallel linkage.   
     
     
         12 . The planter of  claim 10 , wherein the sensor is a voltage sensor or a potentiometer. 
     
     
         13 . The planter of  claim 10 , wherein the processor processes the sensor signals to provide a user with data about one or more of row unit ride quality, soil hardness, and supplemental downforce system function. 
     
     
         14 . The planter of  claim 13 , further comprising an alarm, wherein the alarm is turned on when the row unit ride quality is below a predetermined threshold. 
     
     
         15 . The planter of  claim 10 , further comprising a storage medium in communication with the processor, wherein the storage medium is configured to record sensor signals over time, and wherein analysis of sensor signals over time is an indicator of row unit ride quality. 
     
     
         16 . The planter of  claim 10 , further comprising a set point, wherein the set point is a sensor signal, and wherein when the set point is exceeded the at least one row unit is turned off. 
     
     
         17 . The planter of  claim 16 , wherein the set point is set at a row unit position that is lower than row unit lift stops. 
     
     
         18 . A planter row unit position sensor comprising:
 a position sensor; and   an arm extending from the position sensor, the arm comprising:
 a first arm section having a first end and a second end, the first end of the first arm section operatively engaged with the position sensor, and 
 a second arm section having a first end and a second end, the first end of the second arm section engaged with the second end of the first arm section and the second end of the second arm section operatively engaged with a row unit, 
 wherein the arm moves vertically along with a row unit and wherein the position sensor senses vertical movement of the arm and records such vertical movement. 
   
     
     
         19 . The sensor of  claim 18 , wherein the sensor is a potentiometer sensor. 
     
     
         20 . The sensor of  claim 18 , wherein the sensor is a voltage sensor.