• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    12 SUMMARY This document discloses a method of controlling an agricultural implement (1) comprising a feeding device (13, 14) for feeding granular or powdered material. The method comprises generating an air flow, and feeding the material by means of the air flow. The method also comprises, while the material is being fed by means of the air flow, measuring a parameter relating to the air flow, and controlling the generation of the air flow based on the parameter. Publication picture: Fig. 3
    公开号:SE1251452A1
    申请号:SE1251452
    申请日:2012-12-18
    公开日:2014-06-19
    发明作者:Leif Andersson
    申请人:Väderstad Verken Ab；
    IPC主号:
    专利说明:

    15 20 25 30 The speed can be set by the user in the control unit of the agricultural implement entering the type of crop (or a value that is attributable to the type of crop) and the desired feed rate. The control unit then selects fl speed based on a table or formula derived from empirical studies performed by the tool manufacturer.
    It will be appreciated that there may be variations in the material to be fed as well as in ambient conditions, which may affect the output performance achieved. Thus, variations in, for example, the amount of seed, fertilizer and / or pesticide discharged may occur, which may lead to deviations from what is considered an optimal discharge result.
    There is thus a desire to achieve improved quality in the output.
    Summary The purpose of this document is to provide a procedure and an agricultural tool that provides improved output quality.
    The invention is defined by the appended independent claims.
    Embodiments appear from the dependent claims, the accompanying drawings and the following description.
    According to a first aspect, there is provided a method of controlling an agricultural implement comprising a feeding device for feeding granular or powdered material. The method comprises generating an air flow, and feeding the material by means of the air flow. The method also comprises, while feeding the material by means of the air flow, measuring a parameter relating to the air flow, and controlling the generation of the air flow based on the parameter.
    By measuring a parameter regarding the air flow and controlling the generation of the air flow based on the parameter, it is possible to achieve a more stable and more energy-efficient supply. In addition, both continuous adjustment of optimal air flow during operation and alarms in the event of any faults can be achieved.
    The method may further comprise controlling the air flow to achieve a predetermined parameter value. 10 15 20 25 30 "Predefined parameter value" means a value, an interval or a value with tolerances.
    The predetermined parameter value can be determined based on at least the type of material.
    The parameter can be at least one of a pressure, an air flow and a material velocity.
    The parameter can be measured upstream mixing of the material in the air flow.
    The parameter can be measured downstream mixing of the material in the air flow.
    The parameter can be measured in a distributor, where material-mixed air flow is distributed from one inlet to at least two outlets.
    The parameter can be measured downstream of a distributor.
    The air flow can be controlled at least in part by regulating a fan speed.
    The air flow can be controlled at least in part by regulating a damper.
    According to a second aspect, an agricultural implement is provided comprising a feeding device for feeding granular or powdered material.
    The agricultural implement comprises an air flow generating device, a material injection device, for mixing materials in the air flow, and a control unit, for controlling the air flow generating device. In the agricultural implement, a measuring sensor is arranged to measure a parameter regarding the air flow while the material is being fed by means of the air flow, and the control unit is arranged to receive a signal from the measuring sensor and to control the air flow generating device based on the signal from the measurement sensor.
    The measurement sensor can be a pressure sensor, a flow sensor or a material speed sensor.
    The control unit may be arranged to control the air flow generating device by regulating a fan speed and / or by regulating an opening degree of a damper.
    Brief description of the drawings Fig. 1 is a perspective view of an agricultural implement 1, seen obliquely from behind. Fig. 2 is a sectional view of a combined seed box and fertilizer box 10 with feeding device, taken along the direction of travel F of an agricultural implement carrying the seed box.
    Fig. 3 is a perspective view of a feeding device 2 for feeding granular material from a container to an air flow.
    Fig. 4 is a perspective view of a distributor head.
    Description of embodiments Fig. 1 shows a seed drill 1 seen obliquely from behind / from above. The seed drill is intended to travel in a driving direction F during use.
    The seed drill 1 comprises a seed box 10, which houses a space 11 for seed and a space 12 for fertilizer (Fig. 2). The seed drill further comprises a plurality of fertilizer beetles 2 and a plurality of seed beetles 3. The fertilizer beetles 2 are connected via hoses (not shown) to outlet 4 in the seed box. The sockets 4 are in turn connected to a distributor head (144a), which in turn connects to a transport device 14 for air flow-based fertilizer feed.
    The seed beetles 3 are connected via hoses (not shown) to the respective distributor heads 144b, 144c, which in turn are connected to a feeding device for air flow-based seed feeding.
    The fertilizer beetles 2 and / or the seed beetles 3 can have a respective height adjustment device 6, 7, which may comprise one or more actuators, for example hydraulic actuators, and which can be used for adjusting the height position of the fertilizer beetles 2 and / or the seed beetles 3 in relation to the seed drill 1 and thus adjustment of working depth.
    The height adjustment device 6, 7 can also be used to lift the fertilizer beetles 2 and / or the seed beetles 3 from engagement with the ground, for example to a field transport position, which is used for turning, or transport position, which is used for road transport.
    Fig. 2 shows a seed box 10 and Fig. 3 shows the feed system of the seed box.
    A first feeding device 13 is arranged for feeding manure from a lower portion of the manure space 12 to the transport device 14 for air flow-based feeding of the manure to one or more manure beetles 2.
    The fertilizer space 12 has inner walls sloping towards the feeding device 13, so that fertilizer stored in the space, by the effect of gravity, falls down towards the feeding device 13.
    The first feeding device 13 comprises a feed channel 131 which is arranged substantially horizontally and houses a feed screw 132, which is arranged to carry manure from the feed inlet 133 to a grouting part 142a where the manure is transferred to the transport device 14. The feeding device 13 has a drive unit 134, the drive of which , ie speed and direction of rotation, is controlled by a control unit 102.
    The transport device 14 comprises respective channels 141a, 141b, 141c, 143a, 143b, 143c. Each of the channels has an inlet 140a, 140b, 140c which is connected to a fan unit 107. The fan unit 107 can be designed as a fan housing with a fan wheel 109 and several outputs, the channels 141a, 141b, 141c being connected to the respective output. The impeller 109 may be of the radial type, preferably with substantially backwardly inclined or substantially backwardly bent vanes. A fan motor 106 is provided for driving the fan wheel 109 and dampers 105, preferably a damper for each of the ducts 141a, 141b, 141c, may be provided for regulating and balancing outgoing air flows. The dampers can be individually and continuously adjustable between the fully open and fully closed positions. The fan motor 106 may be a hydraulic motor, preferably at a continuously controllable speed.
    A second feeding device 135 is arranged for feeding seed from a lower portion of the seed space 11 to second and third transport devices 140b, 141b, 143b, respectively; 140c, 141c, 142c, 143c for airflow-based feeding of the seed to the respective distributor heads 144b, 144c.
    The seed space 11 has inner walls sloping towards the second feeding device, so that seed stored in the space, by the effect of gravity, falls down towards the second and third feeding devices.
    The first transport system thus comprises a supply air duct 141a, whose inlet 140a is connected to an outlet of the fan unit 107. The supply air duct 141a connects to a grouting unit 142a, in which material (here fertilizer) fed with the first feeding device 13 is injected into the air duct 14 in the supply air duct 14. The material-mixed air flow is led in a channel 143a to the distributor head 144a, where the material-mixed air flow is divided into a number of material-mixed air flows, for further transport to the fertilizer beetles 2.
    Correspondingly, the second and third transport systems comprise respective supply air ducts 141b, 1410, whose inlets 140b, 1400 are connected to the respective outlets of the fan unit 107. The supply air ducts 141b, 1410 connect to the respective grouting units 142b, 1420, at which materials (here seed) are fed with the second and third feeding devices are injected into the air flows in the supply air ducts 141b, 1410. The material-mixed air flows are led in respective ducts 143b, 1430 to the respective distributor heads 144b, 1440, where the material-mixed air flows are divided into a number of material-mixed air flows. .
    A user interface 101 is connected to a control unit 102, which may be an integrated control unit for controlling all or a number of different functions of the agricultural implement 1. A control system 103 may be arranged for controlling the speed of the fan motor 106 based on a control signal from the control unit 102 .
    In the manifold heads, pressure sensors 108a, 108b, 1080 are arranged to measure air pressure in the respective manifold heads 144a, 144b, 1440. The pressure sensors 108a, 108b, 1080 are connected to the control unit 102.
    The control unit 102 is thus arranged to receive signals corresponding to air pressure in the respective distributor heads 144a, 144b, 1440 and to provide control signals to the control system 103 and the dampers 105. By empirical testing, setpoints (or ranges of setpoints) for air pressure in each distributor head and for respective type of material and feed rate are derived.
    Such setpoints can be stored in memory in the controller 102.
    Prior to operation, the user enters via the user interface 101 data corresponding to the type of material (crop, fertilizer, pesticide) and the desired feed rate, which may be a value per unit area, to be adjusted based on travel speed.
    The controller 102 receives data from the user interface and determines setpoints (or setpoint ranges). During operation, the control unit receives signals corresponding to the current air pressure from each of the pressure sensors 108a, 108b, 108c and determines for each of these whether the current air pressure is acceptable in relation to the corresponding setpoint.
    If the current air pressure indicates too high a flow in a manifold head 144a, 144b, 144c, the corresponding damper 105 can be closed slightly to lower the flow.
    If the current air pressure indicates too low a flow in a manifold head 144a, 144b, 144c, the corresponding damper 105 can be opened slightly to increase the flow.
    If the current air pressure indicates too high a flow in all distributor heads 144a, 144b, 144c, the speed of the fan motor 106 can be reduced to lower the flow and also save energy.
    If the current air pressure indicates too low a flow in all distributor heads 144a, 144b, 144c, the speed of the mot motor 106 can be increased.
    It is also possible to determine upper or lower alarm levels for the respective air pressure, which makes it possible to alarm in the event of faults, such as clogging of, or leakage from, any of the transport devices.
    In a first control loop, the air pressure in the distributor heads for seeds 142b, 142c is measured, the control unit 102 receiving a measuring signal corresponding to the air pressure. The control unit then directly, or via the control unit 103, controls the fan speed.
    In a second control loop, the air pressure in the distributor head 142a is measured for fertilization, whereby the control unit 102 receives a measurement signal corresponding to the air pressure. The control unit then controls directly, or via the control unit 103, the degree of opening of the individual dampers 105.
    Fig. 4 shows a distributor head 144 in detail. The manifold head has a housing 1441, an inlet 1442, which is connected to the channel 143a, 143b, 143c and a plurality of outlets 1443, each of which is connected to a respective locating device. As can be seen from Fig. 3, a lid can close the upper opening of the distributor head. The pressure sensor 108a, 108b, 108c can for instance be placed in or on the housing 1441 alternatively in or on the lid.
    The fan motor 106 may comprise a hydraulic motor, which may receive hydraulic pressure and feed from, for example, a towing vehicle hydraulic system, such as a load sensing hydraulic system. 10 15 20 25 30 One possibility is to use a so-called “round pumping system”, which corresponds to a load-sensing “LS” system, hydraulic system, but lacks a hydraulic signal line.
    Load sensing systems are known and are available as standard or optional equipment for most tractor models. A load-sensing system is characterized in that a variable hydraulic pump is controlled so that the delivered flow and pressure correspond to the need that exists, i.e. the load. Load-sensing hydraulic systems are typically used when a number of different loads are present. With a load sensing system, a single hydraulic feed (which consists of feed line and return line as well as a hydraulic signal line) can be provided from towing vehicles to agricultural implements. The agricultural implement can then be equipped with a hydraulic center, which is often called a "hydraulic block", from which hydraulic fluid with the desired properties (flow, pressure) is distributed by means of controllable valves to different consumers. The distribution is achieved by means of controllable valves, which in turn are controlled by means of control signals from a control unit. The control unit can communicate with a user interface that can be arranged in the towing vehicle by means of a wired (twisted pair, coaxial, fiber optic) or wireless data transmission interface in a manner known per se.
    With the aid of a loading system, a plurality of hydraulic functions of the agricultural implement can thus be controlled from the towing vehicle solely based on instructions provided by the user via an electronic user interface.
    It will be appreciated that one or more of the pressure sensors 108a, 108b, 108c may be replaced by, for example, a thermal gas flow meter, i.e. a sensor which comprises a heated sensor element which is cooled by the mass of the gas mass, and where the temperature difference which has arisen is proportional to the mass of the gas mass and provides information on flow rate and quantity. As a further alternative, a material flow meter can be used, i.e. a meter which, for example by optical or acoustic means, calculates the speed of and / or the amount of material transported in the channel.
    In the above, fertilizer has been used as an example of material that can be discharged. The described system and method can also be used for other types of granular or powdered material, such as seeds or pesticides. In the above, drive units for genuine and feeding devices have been exemplified as hydraulically driven motors. It will be appreciated that other types of drive motors may be utilized, such as electric motors or motors driven by a ground wheel. It is possible to use a transmission for controlling, for example, the fan speed.
    Furthermore, the description has been directed to a machine which has a combined seed box and fertilizer sledge, it being understood that the described system and method can also be used for other types of agricultural implements, such as pure seeding machines and pure fertilizer implements or pesticide implements.
    权利要求:
    Claims (13)
    [1]
    A method of controlling an agricultural implement (1) comprising a feeding device (13, 14) for feeding granular or powdered material, comprising: generating an air fl desert, and feeding the material by means of the air flow, characterized in that, while the material fed using the airflow, measuring a parameter regarding the airflow, and controlling the generation of the air flow based on the parameter.
    [2]
    The method of claim 1, further comprising controlling the air flow to provide a predetermined parameter value.
    [3]
    A method according to claim 2, wherein the predetermined parameter value is determined based on at least the type of material.
    [4]
    A method according to any one of claims 1-3, wherein the parameter is at least one of a pressure, an air flow and a material velocity.
    [5]
    A method according to any one of the preceding claims, wherein the parameter is measured upstream of admixture of the material in the air flow.
    [6]
    A method according to any one of the preceding claims, wherein the parameter is measured downstream mixing of the material in the air flow.
    [7]
    A method according to any one of the preceding claims, wherein the parameter is measured in a distributor, where material-mixed air flow is distributed from one inlet to at least two outlets.
    [8]
    A method according to any one of the preceding claims, wherein the parameter is measured downstream of a distributor. 10 15 20 25 30 11
    [9]
    A method according to any one of the preceding claims, wherein the air flow is at least partially controlled by regulating a fan speed.
    [10]
    10. at least partially controlled by regulating a damper. A method according to any one of the preceding claims, wherein the air flow
    [11]
    An agricultural implement comprising a feeding device (13, 14) for feeding granular or powdered material, comprising: an air-generating device (107), a material injection device (142a, 142b, 1420), for mixing materials into the air flow, and a control unit (102 ), for controlling the air flow generating device (107), characterized in that a measuring sensor (108a, 108b, 1080) is arranged to measure a parameter relating to the air flow while the material is being fed by means of the air flow, and that the control unit (102) is arranged to receive a signal from the measurement sensor and to control the air flow generating device (107) based on the signal from the measurement sensor (108a, 108b, 1080).
    [12]
    108b, 1080) is a pressure sensor, a flow sensor or an agricultural implement according to claim 11, wherein the measuring sensor (108a, material velocity sensor.
    [13]
    13. (102) is arranged to control the air flow generating device (107) by agricultural implements according to claim 11 or 12, wherein the control unit is to regulate a fl speed / and / or by regulating an opening degree of a damper (105).
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    同族专利:
    公开号 | 公开日
    SE536827C2|2014-09-23|
    EP2934082A4|2015-12-23|
    EP2934082B1|2018-07-11|
    EP2934082A1|2015-10-28|
    WO2014098749A1|2014-06-26|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US6158363A|1999-05-21|2000-12-12|Flexi-Coil Ltd.|Apparatus for dispensing particles|
    US6584920B1|2002-09-17|2003-07-01|Bourgault Industries Ltd.|System and method for adjusting air flow in air seeding applications|
    DE102004025758A1|2004-05-26|2005-12-22|Rabe Agrarsysteme Gmbh & Co. Kg|Commodity e.g. seed, distribution machine e.g. seeder, for use with tractor, has electronic controller to automatically adjust rotational speed of hydraulic motor of blower through hydraulic valve based on type and quantity of commodity|
    DE102009025744A1|2009-05-05|2010-11-11|Amazonen-Werke H. Dreyer Gmbh & Co. Kg|Pneumatic distribution machine i.e. seed drill, for distributing seeds, has pressure sensor attached to conveyor line and detecting pressure acting on line, and dosing device switched on and/or off if line attains preset air pressure|
    US8001914B2|2009-06-12|2011-08-23|Great Plains Manufacturing, Inc.|Air-assisted planting system having a single fan with pressure-responsive splitting of air streams for conveying and metering functions|
    US8504310B2|2009-08-05|2013-08-06|Deere & Company|Particulate flow sensing for an agricultural implement|
    US8656848B2|2011-06-10|2014-02-25|Great Plains Manufacturing, Inc.|Seed distribution tower for an air seeder|
    EP2717668B1|2011-06-10|2016-04-27|Great Plains Manufacturing, Incorporated|Seed distribution tower for an air seeder|
    US8928486B2|2012-08-14|2015-01-06|Cnh Industrial Canada, Ltd.|Pressure-based blockage detection system and method in crop production systems|DE102014116101A1|2014-11-05|2016-05-12|Amazonen-Werke H. Dreyer Gmbh & Co. Kg|Pneumatic seed drill|
    US10820483B2|2018-09-07|2020-11-03|Cnh Industrial Canada, Ltd.|Air cart fan control|
    SE544118C2|2020-02-05|2021-12-28|Vaederstad Holding Ab|Agricultural machine comprising sensors, and method for arranging sensors on an agricultural machine|
    SE2030069A1|2020-03-10|2021-09-11|Vaederstad Holding Ab|An agricultural implement, a computer program, a computer-readable medium and a method for detecting abnormal product flow in such an agricultural implement|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1251452A|SE536827C2|2012-12-18|2012-12-18|Procedure for control of agricultural implements and agricultural implements|SE1251452A| SE536827C2|2012-12-18|2012-12-18|Procedure for control of agricultural implements and agricultural implements|
    PCT/SE2013/051548| WO2014098749A1|2012-12-18|2013-12-18|Method for controlling an agricultural implement, and agricultural implement|
    EP13865096.5A| EP2934082B1|2012-12-18|2013-12-18|Method for controlling an agricultural implement, and agricultural implement|
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