EP4337572A1

EP4337572A1 - An in-motion weighing system

Info

Publication number: EP4337572A1
Application number: EP22807938.0A
Authority: EP
Inventors: Bengt ÅKERBLOM; Mikael HEMLÉN
Original assignee: Daprox AB
Current assignee: Daprox AB
Priority date: 2021-05-10
Filing date: 2022-02-21
Publication date: 2024-03-20
Also published as: SE2150588A1; WO2022240329A1

Abstract

The present invention concerns an in-motion weighing system (1) comprising a frame arrangement (3) designed to move a can device (5) from an engagement position (ENG) to an emptying position (EMP). The invention further concerns a dynamic weighing unit (101) configured to weigh the can device (5) in any position and/or continuously along a motion path from the engagement position (ENG) to the predetermined intermediate position (PIP), wherein the dynamic weighing unit (101) is configured to detect start of motion of the can device (5) and/or frame arrangement (3) and configured to detect motion and/or activation of a locking device (11, 11', 11'') in the predetermined intermediate

Description

1

An in-motion weighing system

TECHNICAL FIELD

The present invention relates to an in-motion weighing system according to claim 1 and to a method of weighing a can device by means of an in-motion weighing system according to claim 5.

The present invention relates to a dynamic weighing unit according to claim 7 and further to a method of weighing a can device and/or a frame arrangement under motion from an engagement position to a predetermined intermediate position by means of a dynamic weighing unit according to claim 9.

The present invention further relates to a data medium, configured for storing a data program, programmed for controlling the dynamic weighing unit.

The present invention concerns the industry providing and/or producing weighing arrangements configured for the weighing of refuse or garbage in cans, which cans are emptied into refuse collection vehicles or garbage trucks.

The present invention may concern the industry producing in-motion weighing system and weighing devices and/or vehicles adapted for handling of e.g. refuse bins, cans, garbages or other objects to be weighed.

BACKGROUND ART

Current systems for providing in-motion weighing may use programmable logic controllers electrically coupled to potentiometer sensors or built in functionality within the controllers for determining a time period or time window during which the in-motion weighing is performed.

Current systems lack satisfying weighing within a well-defined time window. The time window may be defined as a duration of time starting from a starting moment when establishing the motion of the can from the engagement position up to the predetermined intermediate position. That is, the time window is defined as an interval in time during which the weighing of the can and/or frame arrangement must take place for providing a correct and robust weighing.

Current systems are instable as the time windows may differ and providing unsecure weighing.

Current systems may work with unsecure locking where the engaging portion of the frame arrangement is locked to the garbage can in other positions than in the correct 2 predetermined intermediate position, e.g. in a position where the garbage can may fall off from the frame arrangement and causing personal injury to the operator.

SUMMARY OF THE INVENTION

An object of the present invention is to provide an in-motion weighing system having reliability and accuracy in functionality and operation.

An object is to provide an in-motion weighing system, which provides redundancy in view of reliability, e.g. providing that the engaging portion of the frame arrangement is locked to the garbage can in the predetermined intermediate position.

This or at least one of said objects has been achieved by an in-motion weighing system according to claim 1.

Alternatively, the dynamic weighing unit comprises an in-motion weighing stop detector device configured to detect motion and/or activation of the locking device locking the can device to said engaging portion.

This has been achieved by a dynamic weighing unit configured to weigh the can device and/or the frame arrangement (or a portion of the frame arrangement configured to engage the can device) in any position and/or continuously along a motion path from the engagement position to the predetermined intermediate position, wherein the dynamic weighing unit is configured to detect start of motion of the can device and/or frame arrangement (or said portion) and configured to detect motion and/or activation of a locking device configured to lock the can device to an engaging portion of the frame arrangement in the predetermined intermediate position.

Alternatively, the electronic control circuitry is configured to be electrically coupled to the computer of the dynamic weighing unit.

Alternatively, a computer of the dynamic weighing unit is adapted to determine the weight of the can device by measuring the weight of the can device in different positions of the can device along a motion path from the engagement position to the predetermined intermediate position.

Alternatively, the computer is configured to take into account and selects a group of first- rate weighing values with the most reliable angle values and approved measured spread of weighing data when computing the weight of the can device.

In such way the dynamic weighing unit is configured to weigh the can device and/or frame arrangement during said well-defined time window with accuracy in functionality and 3 operation and/or configured to weight the can device and/or frame arrangement according to the group of first-rate weighing values to be compared.

Alternatively, the computer is configured to take into account empirical data in regard to weight history regarding weighing of can devices made by the dynamic weighing unit.

In such way is achieved a well-defined time window corresponding with a duration of time starting from the first time unit when establishing (starting) the motion of the can device from the engagement position to the predetermined intermediate position providing the second time unit.

Alternatively, the well-defined time window starts at a first time unit when starting the motion of the can device and/or frame arrangement from the engagement position and ends at a second time unit when the can device and/or frame arrangement passes the predetermined intermediate position, whereas a first signal of the first sensor device provides starting of the well-defined time window and the in-motion weighing stop detector device provides stop of the well-defined time window.

Alternatively, the computer is adapted to command start of the in-motion weighing when receiving the first signal and is adapted to command stop of the in-motion weighing when receiving the second signal.

Alternatively, the engagement position provides that the can device initially has been moved (lifted) from the ground by means of the frame arrangement so that the can device is fully supported by the engaging portion and that the in-motion weighing starts.

Alternatively, the engagement position may be defined as an in-motion weighing starting position meaning that the can device initially has been moved (lifted) from the ground by means of the frame arrangement, so that the can device is fully supported by the engaging portion and free from contact with the ground, wherein the in-motion weighing may start.

Alternatively, the in-motion weighing stop detector device is electrically coupled to a computer of the dynamic weighing unit for detecting the end of the well-defined time window.

Alternatively, the first sensor device, configured to detect engagement of the can device to the engaging portion, is electrically coupled to the computer of the dynamic weighing unit for detecting the start of a well-defined time window.

Alternatively, the electronic control circuitry is adapted to command the drive device to stop the frame arrangement at a stop position between the engagement position and the predetermined intermediate position.

Alternatively, a fourth sensor device configured to detect the stop position is electrically coupled to the computer of the dynamic weighing unit for detecting start of a well-defined time window. 4

In such way the dynamic weighing unit is configured to weigh the can device and/or frame arrangement during said well-defined time window with accuracy in functionality and operation.

Alternatively, an actuator unit of the locking device is electrically coupled to and being activated by the electronic control circuitry for moving a securing member of the locking device into a locking state, wherein the can device is locked to the engagement portion of the frame arrangement.

Alternatively, the in-motion weighing stop detector device is electrically coupled to a computer of the dynamic weighing unit for commanding in-motion weighing stop.

Alternatively, the securing member is a pivot able angular bar, which is comprises a first web and a second web.

Alternatively, the first web is configured to abut the upper side of the can device in closed position, and the second web is hingedly arranged to the frame arrangement over a hinge element.

Alternatively, the actuator unit is coupled to the frame arrangement and to the second web.

Alternatively, the actuator unit comprises a pneumatic actuator or a hydraulic actuator.

This or at least one of said objects has been solved by a dynamic weighing unit configured to weigh a can device and/or a frame arrangement during motion from an engagement position, comprising a first sensor device, to a predetermined intermediate position associated with a second sensor device, wherein the dynamic weighing unit is configured to detect motion and/or activation of a locking device configured to lock the can device to an engaging portion of the frame arrangement in the predetermined intermediate position.

Alternatively, the dynamic weighing unit comprises an in-motion weighing stop detector device configured to detect motion and/or activation of the locking device, an actuator unit of the locking device is electrically coupled to and being activated by the electronic control circuitry for moving a securing member of the locking device into a locking state, wherein the can device is locked to the engagement portion; and the sensor is electrically coupled to a computer of the dynamic weighing unit for commanding in-motion weighing stop.

Alternatively, the in-motion weighing stop detector device comprises a first electro mechanical gyroscope unit and/or a first accelerometer unit and/or a magnetic field sensor unit and/or a distance measuring sensor unit measuring the reluctance by means of DC magnetic fields or any type of motion detector device.

Alternatively, the first electro-mechanical gyroscope unit comprises a micro electro mechanical gyroscope.

Alternatively, detected motion and/or activation of the locking device for locking the can device to the engaging portion is achieved by the first electro-mechanical gyroscope unit 5 mounted to the locking device and/or the securing member for measuring rotational velocity of the securing member when the securing member is subjected to a motion relative the frame arrangement.

Alternatively, detected motion and/or activation of the locking device for locking the can device to the engaging portion is achieved by the first accelerometer unit mounted to the locking device and/or the securing member for measuring changes in velocity of the securing member when the securing member is subjected to a motion relative the frame arrangement.

Alternatively, detected motion and/or activation of the locking device for locking the can device to the engaging portion is achieved by the magnetic field sensor unit mounted to the locking device and/or the securing member for measuring changes in load of the securing member when the securing member is subjected to a motion relative the frame arrangement.

Alternatively, detected motion and/or activation of the locking device for locking the can device to the engaging portion is achieved by the distance measuring sensor unit mounted to the locking device and/or the securing member for measuring changes in load of the securing member when the securing member is subjected to a motion relative the frame arrangement.

This or at least one of said objects has been solved by a method according to claim 5.

In such way, the step of weighing the can device and/or frame arrangement in motion from the engagement position to the predetermined intermediate position can be made within a well-defined time window.

Alternatively, the well-defined time window starts at a first time unit when starting the motion of the can device and/or frame arrangement from the engagement position and ends at a second time unit when ending the motion of the can device and/or frame arrangement at the predetermined intermediate position.

Alternatively, the step of detecting motion and/or activation of the locking device is performed by an in-motion weighing stop detector device configured to detect motion and/or activation of the locking device.

Alternatively, the electronic control circuitry is adapted to command the drive device to move the frame arrangement to the emptying position and is adapted to register when the frame arrangement passes the predetermined intermediate position. 6

Alternatively, the electronic control circuitry is adapted to command the locking device to lock the can device to the engaging portion when the second sensor device detects that the frame arrangement passes the predetermined intermediate position.

Alternatively, the electronic control circuitry is adapted to command the drive device to start moving the frame arrangement from the engagement position to the predetermined intermediate position and/or to the emptying position and/or the stop position, when the first sensor detects engagement of the can device with the engaging portion.

Alternatively, the locking device is subject to motion and/or activation when the second sensor device, such as an angular potentiometer, a position sensor etc., electrically coupled to the electronic control circuitry, detects that the frame arrangement reaches the predetermined intermediate position, which second sensor device may be mounted to the frame arrangement or to the garbage truck at any position of the refuse collection vehicle or garbage truck that not moves relative the frame arrangement when the frame arrangement moves the can device.

Alternatively, the frame arrangement partly or fully comprises the dynamic weighing unit.

Alternatively, the second sensor device is electrically coupled to the electronic control circuitry and is associated with the locking device per se for detecting the angular orientation of the locking device relative the garbage truck.

Alternatively, the dynamic weighing unit comprises a computer coupled to a weighing device configured to weigh the can device and/or frame arrangement, which weighing device may comprise a load cell or a magnetic field sensor unit or a second distance measuring sensor measuring reluctance by means of DC magnetic fields in relation to a gap between a flexible section and a rigid section of the second distance measuring sensor, wherein a first end surface of a magnetically conductive core and a second end surface may be provided to determine the gap to be measured by the second distance measuring sensor, which gap is variable in a direction corresponding with the direction of the load force.

Alternatively, the flexible section is formed as a first elongated bar.

Alternatively, the rigid section is formed as a second elongated bar.

Alternatively, the second distance measuring sensor is mounted to the frame arrangement providing that the gap is affected by the load force of the can device.

Alternatively, the weighing device is formed as an elongated body having an elongated U- shaped cavity being formed of a lower side and an upper side and a short side joining the lower side and the upper side. The lower side and the upper side each extends from a base portion of the elongated body toward the short side. A central portion having a free end forming the gap. 7

Alternatively, the weighing device is configured to weigh the can device and/or frame arrangement under motion at from the engagement position to the predetermined locking position.

Alternatively, the weighing device is demountable arranged to the frame arrangement.

Alternatively, the weighing device is arranged to the frame arrangement, wherein the bending moment induced in the flexible section varies during continuous rotational motion of the frame arrangement.

Alternately, the computer is configured to calculate the actual weight of the load taking into account the actual angle that the frame arrangement has rotated from the engagement position to the predetermined intermediate position, which actual angle determines the bending moment acting on the flexible section.

Alternatively, the bending moment provides the actual gap being affected by the load force of the can device.

Alternatively, the computer is configured to adjust the registered weight from variation in the rotational velocity/angle rate (i.e. decelerations and accelerations of the frame arrangement) taking into account variations of the measure of the gap.

Alternatively, at the predetermined intermediate position reached along the motion path from the engagement position toward the emptying position, the magnitude of a second moment, given by a load force acting on the engaging portion of the frame arrangement and a second distance (second moment arm) extending from the pivot point of the frame arrangement to the engaging portion, starts to decrease to such extent that it provides a gap of the second distance measuring sensor that is misleading for said determining and calculating.

Alternatively, a second accelerometer unit is coupled to the computer, which second accelerometer is configured to detect variations in rotational velocity of the frame arrangement.

Alternatively, the computer is configured to calculate the actual weight of the load taking into account the detected variations in rotational velocity of the frame arrangement.

Alternatively, the computer is configured to adjust the registered weight from variations in decelerations and accelerations of the frame arrangement into a compensated value, wherein said variations are detected by the second electro-mechanical gyroscope and/or second accelerometer unit. 8

Alternatively, the second electro-mechanical gyroscope and/or second accelerometer unit may detect variations in rate of rotational velocity (e.g. degrees per second) without any fixed point of reference.

Alternatively, the computer of the dynamic weighing unit is electrically coupled to the electronic control circuitry.

In such way is achieved that the operator via a display of the electronic control circuitry can control and monitor the dynamic weighing unit and/or the activation of the locking device.

In such way is provided an in-motion weighing system with reliability and accuracy in functionality and cost-effective production and operation.

Alternatively, the computer of the dynamic weighing unit comprises a converting unit configured to convert the measured distance of the gap to mass and weight of the can device and/or frame arrangement to be weighed.

Thereby is achieved a robust and exact weighing device due to the fact that the flux paths emanating from the magnetically conductive core is stable and unaffected by rough handling and harsh environment.

Alternatively, the engagement position is defined as a position where the can device is engaged to the frame arrangement.

Alternatively, an operator brings the can device to the frame arrangement and brings the can device into abutment with the engagement position.

Alternatively, the predetermined intermediate position is a position of the motion path of the frame arrangement between the engagement position and the emptying position.

Alternatively, the motion path is defined as a path following a circular arc, along which the can device follows when moved from the engagement position to the emptying position.

Alternatively, the predetermined intermediate position is selected as a position where the can device still by gravity abuts the engaging portion.

Alternatively, the predetermined intermediate position is selected on a position well before a point of the motion path where the can device by gravity otherwise would be disengaged from the engagement portion. 9

Alternatively, the predetermined intermediate position is defined as a locking position, in which locking position the can device is locked to the frame arrangement by means of the locking device configured for locking the can device to said engaging portion in a predetermined intermediate position.

Alternatively, the frame arrangement is pivot ably coupled to the vehicle via a pivot member.

Alternatively, the pivot member exhibits a horizontal extension so that the frame arrangement and the engagement portion being rotatable vertically about the pivot member and following a circular arc.

Alternatively, at the engaging position, or at the vicinity of the engaging position, or at any position between the engaging position and the predetermined intermediate position, the magnitude of a first moment, given by a load force acting on the engagement portion of the frame arrangement (or acting on any other supporting portion of the frame arrangement) and a first distance (first moment arm) extending from the first pivot member (rotation axis) of the frame arrangement to the engagement portion (or said other supporting portion), provides a momentary force that affects the width of the gap of the second distance measuring sensor of the weighing device, which gap is used for determining and calculating the actual weight of the can device.

Alternatively, the frame arrangement comprises a lifting arm, which lift arm comprises the engaging portion.

Alternatively, the load force is defined by the weight of the can device plus the garbage in the can device and/or frame arrangement and/or the lifting arm.

Alternatively, the dynamic weighing unit makes use of the magnitude of the moment (produced by the load force and a first distance or first moment arm) acting on the frame arrangement or lifting arm.

Alternatively, the second sensor device is configured to detect motion of the locking device relative the motion of the frame arrangement in the locking position, in which predetermined position of the frame arrangement, the locking device is subject to activation and/or motion for locking the can device to the engaging portion.

Alternatively, the in-motion weighing stop detector device of the in-motion weighing system is configured to detect the predetermined intermediate (locking) position of the frame arrangement, in which a locking sequence is started for locking the can device to the engaging portion.

Alternatively, the predetermined intermediate (locking) position corresponds with a position defined between the engagement position and the emptying position, into which position 10 the can device and/or the frame arrangement has been moved by means of the drive device mechanically coupled the frame arrangement.

Alternatively, the frame arrangement is mounted to the refuse collection vehicle or garbage truck, wherein the frame arrangement is configured to move the can device to the emptying position for emptying the refuse or garbage into a waste collecting space of the vehicle.

Alternatively, the frame arrangement is mounted to the refuse collection vehicle or garbage truck via a rotatable frame arrangement, which is configured to move the can device from the engagement position to the emptying position for emptying the garbage into the waste collecting space.

Alternatively, the emptying position is defined as a position where the refuse or garbage in the can device is emptied into the waste collecting space.

Alternatively, the first sensor device is configured to signal to the electronic control circuitry that the can device is engaged with the frame arrangement in the engagement position, whereas the electronic control circuitry commands the drive device to drive the frame arrangement.

Alternatively, the frame arrangement is arranged rotatable about a first horizontal pivot member of the refuse collection vehicle or garbage truck.

Alternatively, the frame arrangement is arranged rotatable about a second horizontal pivot member of a pivot able lifting arm of the refuse collection vehicle or garbage truck.

Alternatively, the dynamic weighing unit is configured to weigh the can device (with or without the refuse or garbage) and to feed signals to the electronic control circuitry regarding the actual weight of the refuse or garbage.

Alternatively, the frame arrangement comprises a first coupling member configured to mate a second coupling member of the can device, for providing the engagement of the can device to the engaging portion of the frame arrangement in the engagement position.

Alternatively, the drive device is mechanically coupled to the rotatable frame arrangement pivot able coupled to the refuse collection vehicle or garbage truck for providing lifting and lowering of the can device.

Alternatively, the engaging portion is formed with a first surface configured to engage a second surface of the can device.

Alternatively, the drive device is configured to drive the frame arrangement from said engagement position to a stationary position, which stationary position is provided between the engagement position and the predetermined intermediate position. 11

Alternatively, the predetermined intermediate position, at which the can device is locked to the engaging portion of the frame arrangement by means of the locking device, may be defined as a position of entering a locking sequence.

Alternatively, the motion of the can device from the engagement position to the predetermined intermediate position or position of entering the locking sequence, provides sufficient time for the dynamic weighing unit to achieve and provide optimal and correct weighing of the can device to be emptied within the well-defined time window.

Alternatively, a first locking surface of the securing member is configured to mate with a second locking surface of the can device.

Alternatively, the locking device is formed as a tilt able arm arrangement hingedly coupled to the frame arrangement and the actuator unit is coupled to the frame arrangement and to the tiltable arm arrangement for driving the tiltable arm arrangement between an open state and said locking state providing the securing position.

Alternatively, the open state permits the can device to be released from the frame arrangement.

Alternatively, the locking state permits the can device to be locked to the frame arrangement.

Alternatively, the open state permits that the first coupling member of the frame arrangement is free to be coupled to the second coupling member of the can device.

Alternatively, the locking state for securing the can device to the frame arrangement involves said entering of the locking sequence of said locking, wherein the securing member of the locking device (e.g. the tiltable arm arrangement) has been moved into said locking state.

Alternatively, a first locking surface of the securing member is configured to mate with a second locking surface of the can device, wherein in said locking state the first locking surface abuts the second locking surface, by that the securing member of the locking device is moved by means of the actuator unit into said locking state.

This or at least one of said objects has been achieved by a dynamic weighing unit according to claim 7.

Alternatively, the dynamic weighing unit comprises an in-motion weighing stop detector device configured to detect motion and/or activation of the locking device, an actuator unit of the locking device is configured the move a securing member into a locking state for locking the can device to the engagement portion; and the in-motion weighing stop detector 12 device is electrically coupled to a computer of the dynamic weighing unit for commanding in-motion weighing stop.

This or at least one of said objects has been achieved by a method of weighing a can device and/or a frame arrangement under motion according to claim 9.

Alternatively, a first sensor device of the dynamic weighing unit according to claim 7 is configured to signal start of the well-defined time window and the in-motion weighing stop detector device is configured to signal stop of the well-defined time window, the first sensor device and the in-motion weighing stop detector device are electrically coupled to a computer of the dynamic weighing unit for commanding start and stop of the in-motion weighing, which computer is configured to control the method according to claim 9.

This or at least one of said objects has been achieved by a data medium, configured for storing a data program, programmed for controlling the dynamic weighing unit according to claim 7, wherein the data medium comprises a program code being readable on the computer for performing the method steps according to claim 9.

In such way is achieved that a satisfactory and reliable weighing can be made at the same time as safe handling of the can device is achieved.

In such way is achieved robust registration of actual weight of garbage to be collected by a garbage truck.

The term "frame arrangement" may mean any frame structure and/or arm and/or lever and/or lifting mechanism and/or portion of a lifting mechanism designed to lift and move the can device from the engagement position to the emptying position.

The term "first sensor device" may mean a contact sensor and/or angular potentiometer and/or detector configured to detect engagement of the can device to the engaging portion.

The term "driving device" may mean a hydraulic and/or pneumatic actuator and/or electric motor and/or hydraulic-electric actuator.

The term "engagement position" may mean a position where the can device is coupled and engaged to the frame arrangement and/or the can is not in contact with the ground.

The term "emptying position" may mean a position where the can is tilted to such extent by means of the farm arrangement that the garbage in the can device will be discharged from the can device by means of gravity.

The term "locking device" may mean an L-shaped locking arm and/or a mechanical locking mechanism and/or electro-mechanical locking mechanism and/or pin to hole locker.

The term "second sensor device" may mean an angular potentiometer and/or a position sensor and/or a contact sensor. 13

The term "electronic control circuitry" may mean a computer unit and/or a CPU and/or a central processor unit and/or control unit.

The term "can device" may mean garbage can or other receptacle suitable to store garbage.

The term "time window" may mean a period of time starting at a first moment of time or first time point and ending at a second moment of time or second time point.

The first moment of time or first time point may be a starting time defining starting the weighing performed by the dynamic weighing unit.

The second moment of time or second time point may be an ending time defining ending the weighing performed by the dynamic weighing unit.

The first moment of time or first time point may be set at the engagement position and the second moment of time or second time point may be set at the predetermined intermediate position.

Alternatively, the first moment of time or first time point may be set as a time point where the dynamic weighing unit weighs the can device and/or frame arrangement in any position between the engagement position and the predetermined intermediate position.

The term "time window" may be concentrated to said first moment of time or first time point.

By identifying the engagement position by the motion of the locking arm, there is established a safe and robust and well-defined time window, during which the dynamic weighing unit from the engagement position to the predetermined intermediate position PIP provides weighing of the can device (and/or garbage).

The computer of the dynamic weighing unit is adapted to command in-motion weighing stop.

In such way, the motion of the can from the engagement position ENG to the predetermined intermediate position PIP (or any position of entering a locking sequence for locking the can 5 to the frame arrangement 3), provides sufficient time for the dynamic weighing unit 101 to provide optimal and correct weighing of the can 5 to be emptied from garbage (not shown) within the well-defined time window.

This is achieved by a dynamic weighing unit configured to weigh the can device and/or the frame arrangement (or a portion of the frame arrangement configured to engage the can device) in any position and/or continuously along a motion path from the engagement position to the predetermined intermediate position, wherein the dynamic weighing unit is configured to detect start of motion of the can device and/or frame arrangement (or said portion) and configured to detect motion and/or activation of a locking device configured to 14 lock the can device to an engaging portion of the frame arrangement in the predetermined intermediate position

The present invention is of course not in any way restricted to the preferred embodiments described herein, but many possibilities to modifications, or combinations of the described embodiments thereof should be apparent to a person with ordinary skill in the art without departing from the basic idea of the invention as defined in the appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will now be described by way of examples with references to the accompanying schematic drawings, of which:

Figs, la to le illustrate a portion of a garbage truck with a pivot able frame arrangement coupled to a can device to be moved from an engagement position to an emptying position according to a first example;

Fig. 2 illustrates an in-motion weighing system and a dynamic weighing unit according to a further example;

Figs. 3a to 3b illustrate a dynamic weighing unit according to a further example;

Fig. 4 illustrates a diagram showing a time window during which an exemplary dynamic weighing unit weighs the can device;

Fig. 5 illustrates an in-motion weighing system and a dynamic weighing unit according to further examples;

Fig. 6 illustrates a frame arrangement of a dynamic weighing unit according to a further example;

Fig. 7 illustrates a flowchart showing an exemplary method of weighing a can device and/or a frame arrangement under motion by means of an in-motion weighing system;

Fig. 8 illustrates a flowchart showing an exemplary method of weighing a can device and/or a frame arrangement under motion by means of a by means of a dynamic weighing unit;

Fig. 9 illustrates a flowchart showing an exemplary method of weighing a can device and/or a frame arrangement under motion by means of a by means of a dynamic weighing unit; and

Fig. 10 illustrates a computer of a dynamic weighing unit according to a further example.

DETAILED DESCRIPTION 15

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings, wherein for the sake of clarity and understanding of the invention some details of no importance may be deleted from the drawings.

Figs, la to le illustrate a garbage truck 2 comprising an in-motion weighing system 1 coupled to a can 5 to be moved from an engagement position ENG to an emptying position EMP by means of a pivot able frame arrangement 3 according to a first example. The in-motion weighing system 1 comprises a first sensor (not shown) configured to detect engagement of the can 5 to an engaging portion 7 of the frame arrangement 3. A shown in Fig. la, the in motion weighing system 1 further comprises a drive motor 9 coupled to the frame arrangement 3 for driving the frame arrangement 3 from said engagement position ENG to said emptying position EMP. A locking arm 11 of the frame arrangement 3 is configured for locking the can 5 to the engaging portion 7 in a predetermined intermediate position PIP (see Fig. Id). A second sensor (not shown) is configured to detect the predetermined intermediate position PIP for proving said locking.

An electronic control circuitry 13 electrically coupled to the first sensor and to the second sensor and to the locking arm 11 and to the drive motor 9.

The frame arrangement 3 comprises a dynamic weighing unit 101 configured to weigh the can 5 (and/or the garbage in the can) during motion of from the engagement position ENG to the predetermined intermediate position PIP.

The dynamic weighing unit 101 may comprise a weighing device (strain gauge, a magnetic field detector, a distance measuring detector measuring the reluctance by means of DC magnetic fields or other, which makes use of the magnitude of moment, given by a load force acting on the engaging portion 7 of the frame arrangement 3 and a distance (moment arm MA, see Fig. lb) extending from a pivot point PP of the frame arrangement 3 to the engagement portion 7. The moment will in turn affect a gap (not shown) within the weighing device, which gap is to be measured by the dynamic weighing unit 101 and the measured gap is converted to weight of the can and/or frame arrangement to be weighed.

The first sensor (not shown) may signal a start weighing signal to a computer (not shown) of a dynamic weighing unit 101.

The dynamic weighing unit 101 is further being configured to detect motion of the locking arm 11 locking the can 5 to said engaging portion 7 in the predetermined intermediate position PIP (See Fig. Id) by means of an in-motion weighing stop detector (not shown). The in-motion weighing stop detector may comprises a first electro-mechanical gyroscope unit and/or a first accelerometer unit and/or a magnetic field sensor unit or a distance measuring sensor unit measuring the reluctance by means of DC magnetic fields.

By identifying the engagement position ENG by the motion of the locking arm, there is established a safe and robust and well-defined time window, during which the dynamic 16 weighing unit 101 from the engagement position ENG to the predetermined intermediate position PIP provides weighing of the can (and/or garbage).

At the same time, there is provided that confirmation is made by the computer detecting that the locking arm 11 correctly locks the can and/or that the locking is made properly at the predetermined intermediate position PIP reached along a motion path (provided by the frame arrangement when pivoted about the pivot member joining the frame arrangement to the garbage truck) from the engagement position ENG toward the emptying position EMP.

The magnitude of a said moment, given by a load force acting on the engagement portion 7 of the frame arrangement 3 and the moment arm extending from the pivot point PP of the frame arrangement 3 to the engagement portion ENG, starts to decrease after reaching the predetermined intermediate position PIP to such extent that it provides a lesser gap within the weighing device that is misleads for correct determining and calculating the weight during said in-motion weighing.

In Fig. lc is shown a position of the can just before the locking arm 11 locks the can 5 to the farm arrangement 3, as shown in Fig. Id.

In Fig. le is shown that the frame arrangement 3 has reached the emptying position EMP for emptying the garbage into a waste collecting space 14 of the garbage truck 2.

Fig. 2 illustrates a garbage truck 2 comprising an in-motion weighing system 1 in engagement with a garbage can 5 to be moved from an engagement position ENG to an emptying position (not shown) by means of a pivot able frame arrangement 3 according to a second example. The engagement position ENG may be defined as an in-motion weighing starting position meaning that the garbage can 5 initially has been moved (lifted) from the ground 6 by means of the frame arrangement 3, so that the garbage can 5 is fully supported by the engaging portion and free from contact (no contact NC) with the ground 6, wherein the in motion weighing starts. The in-motion weighing system 1 comprises a first sensor 15 configured to detect engagement of the garbage can 5 to an engaging portion 7 of the frame arrangement 3.

The in-motion weighing system 1 further comprises a drive motor 9 coupled to an lever arm 10 of the frame arrangement 3. The drive motor 9 drives the frame arrangement 3 from the 17 engagement position ENG to the emptying position. A locking arm 11 of the frame arrangement 3 is hinged coupled to the frame arrangement 3 about a hinge 12.

An actuator unit 14 of the locking arm 11 is electrically coupled to and being activated by an electronic control circuitry 13 of the in-motion weighing system 1 for moving a securing member 17 of the locking arm 11 into a locking state, wherein the garbage can 5 is locked to the engaging portion 7 of the frame arrangement 3.

An angular potentiometer (second sensor) 19 is mounted to a pivot point PP to detect a predetermined intermediate position of the frame arrangement 3, in which position a signal to lock the securing member 17 is made by actuating the actuator unit 14.

The angular potentiometer 19 may also be used for detecting the in-motion weighing starting position.

The electronic control circuitry 13 is electrically coupled to the first sensor 15, to the angular potentiometer 19, to the actuator unit 14 of the locking arm 11 and to the drive motor 9.

Furthermore, the frame arrangement 3 comprises a dynamic weighing unit 101 configured to weigh the garbage can 5 (and/or the garbage in the garbage can by subtracting the known weight of the garbage can from the weight load) during motion of the garbage can 5 from the engagement position ENG to the predetermined intermediate position.

The dynamic weighing unit 101 may comprise a weighing device 103 (strain gauge, a magnetic field detector, a distance measuring detector measuring the reluctance by means of DC magnetic fields or other weighing devices, which makes use of the magnitude of moment, given by a load force acting on the engaging portion 7 of the frame arrangement 3 and a moment arm. The moment will in turn affect a gap (not shown) within the weighing device 103, which gap is to be measured by the dynamic weighing unit 101 and the measured gap is converted to weight of the garbage can to be weighed. The first sensor 15 signals a start weighing signal to a computer 105 of the dynamic weighing unit 101 when the garbage can 5 enters the engagement position ENG.

The dynamic weighing unit 101 is configured to detect motion of the locking arm 11 locking the can 5 to said engaging portion 7 in the predetermined intermediate position by means of an in-motion weighing stop detector 107. The in-motion weighing stop detector 107 may comprises a first electro-mechanical gyroscope unit and/or a first accelerometer unit and/or a magnetic field sensor unit or a distance measuring sensor unit measuring the reluctance by means of DC magnetic fields. The in-motion weighing stop detector 107 is electrically coupled to the computer 105 of the dynamic weighing unit 101 for commanding in-motion weighing stop.

Alternatively, the computer 105 of the dynamic weighing unit 101 may be coupled to the electronic control circuitry 13 via a data bus (not shown) for signalling operational data of the dynamic weighing unit 101 to the electronic control circuitry 13. 18

In such way an operator (not shown) is shown the status of the dynamic weighing unit 101 via e.g. a display screen (not shown) of the electronic control circuitry 13.

Figs. 3a to 3b illustrate a dynamic weighing unit 101 according to an example. An in-motion weighing system (not shown) provides detection of engagement of a pivot able frame arrangement 3 to a garbage can 5. The garbage can 5 is moved from an engagement position ENG to an emptying position EMP by means of the pivot able frame arrangement 3.

The engagement position ENG may provide that the garbage can 5 is fully supported by the engaging portion and free from contact with the ground 6 so that in-motion weigh can start.

The in-motion weighing system detects engagement of the garbage can 5 to an engaging portion 7 (see Fig. 3a) of the frame arrangement 3. A locking arm 11 of the frame arrangement 3 is configured for locking the garbage can 5 to the engaging portion 7 in a predetermined intermediate position PIP. A suitable sensor (not shown) of the in-motion weighing system is configured to detect the predetermined intermediate position PIP, signalling a position signal to an electronic control circuitry (not shown) of the in-motion weighing system. The position signal indicates the predetermined intermediate position PIP, whereas the electronic control circuitry commands an actuator 14 (see Fig. 3b) of the locking arm 11 to provide said locking, wherein the locking arm 11 is moved by the actuator 14 into locking position.

The dynamic weighing unit 101 is configured to weigh by means of a weighing device and calculate the garbage in the garbage can 5 during motion of the garbage can 5 from the engagement position ENG to the predetermined intermediate position PIP.

The dynamic weighing unit 101 is configured to detect start of motion of the garbage can 5 from the engagement position ENG and is configured to detect motion and/or activation of the locking arm 11 configured to lock the garbage can 5 to the engaging portion 7 in the predetermined intermediate position PIP.

In such way is achieved that the dynamic weighing unit 101 during a well-defined time window provides weighing of the can and/or frame arrangement.

The well-defined time window corresponds with a duration of time starting from a first time unit when establishing (starting) the motion of the can from the engagement position ENG to the predetermined intermediate position PIP providing a second time unit.

Alternatively, the electronic control circuitry is adapted to command the drive motor to stop the frame arrangement at a stop position SPP between the engagement position ENG and the predetermined intermediate position PIP.

Fig. 3a shows in steps how the dynamic weighing unit 101, configured for receiving data and monitoring/controlling the in-motion weighing, operates. The garbage can 5 is engaged to the engaging portion 7 of the frame arrangement 3. The garbage can 5 is moved from the engagement position ENG to the emptying position EMP. The garbage can 5 is locked to the 19 engaging portion at the predetermined intermediate position PIP. Motion and/or activation of the locking arm 11 is detected by an in-motion weighing stop detector 107 electrically coupled to a computer 105 of the dynamic weighing unit 101. A weighing device 103 (strain gauge, a magnetic field detector, a distance measuring detector measuring the reluctance by means of DC magnetic fields or other weighing devices, which makes use of the magnitude of moment, given by a load force acting on the engaging portion 7 of the frame arrangement 3) signals data to the computer 105 when the garbage can is moved from the engagement position ENG to the predetermined intermediate position PIP.

Fig. 4 illustrates a diagram showing a well-defined time window W during which a dynamic weighing unit weighs a garbage can, when the can is moved from the engagement position ENG to the predetermined intermediate position PIP. The letter t represents time in vertical axis and the letter s represents moved extent (distance) of the motion path of the garbage can in horizontal axis from the engagement position toward the emptying position.

A first sensor device of a dynamic weighing unit is configured to signal start at the time unit tl to a computer of the dynamic weighing unit.

An in-motion weighing stop detector device of the dynamic weighing unit is configured to signal stop weighing at the time unit t2.

Alternatively, the can is stopped at a stop position SPP between the engagement position ENG and the predetermined intermediate position PIP.

The first sensor device and the in-motion weighing stop detector device are electrically coupled to the computer for commanding start and stop of the in-motion weighing.

Fig. 5 illustrates an in-motion weighing system 1 and a dynamic weighing unit 101 of a garbage truck (not shown) according to further examples. A can (not shown) of the in motion weighing system 1 is to be moved from an engagement position to an emptying position by means of a pivot able frame arrangement (not shown). The in-motion weighing system 1 comprises a first sensor 15 configured to detect engagement of the can 5 to an engaging portion (not shown) of the frame arrangement. The first sensor is electrically coupled to an electronic control circuitry 13. The first sensor 15 signals a start weighing signal to a computer 105 of the dynamic weighing unit 101 when the can 5 starts to move from the engagement position.

A drive motor 9 coupled to the frame arrangement for driving the frame arrangement from said engagement position to said emptying position. A movable locking mechanism IT of the frame arrangement is configured to lock the can to an engaging portion of the frame arrangement in a predetermined intermediate position. The electronic control circuitry 13 is coupled to a second sensor 19, which indicates a position of the can where it should be locked to the engagement portion. 20

The drive motor 9 can be disengaged and stopped from driving the frame arrangement by means of a control unit 44. The control unit may be configured to stop the frame arrangement at a stop position between the engagement position and the predetermined intermediate position.

The computer 105 of the dynamic weighing unit 101 is electrically coupled to an in-motion weighing stop detector 107. The in-motion weighing stop detector 107 indicates motion of the movable locking mechanism 11' locking the can the engagement portion and signals to the computer 105 that the can is in the predetermined intermediate position where it is proper to stop the dynamic weighing of the can by means of the dynamic weighing unit 101.

The dynamic weighing of the can thus is performed in a well-defined time window from the engagement position to the predetermined intermediate position and weighing may be performed by the dynamic weighing unit 101 also in the stop position.

The in-motion weighing stop detector 107 may comprises a first electro-mechanical gyroscope unit and/or a first accelerometer unit and/or a magnetic field sensor unit or a distance measuring sensor unit measuring the reluctance by means of DC magnetic fields.

By identifying the engagement position by the motion of the movable locking mechanism, there is established a safe and robust and well-defined time window, during which the dynamic weighing unit 101 weighs the can.

The dynamic weighing unit 101 comprises a weighing device 103 (strain gauge, a magnetic field detector, a distance measuring detector measuring the reluctance by means of DC magnetic fields or other, which makes use of the magnitude of moment, given by a load force e.g. acting on of the frame arrangement.

In such way, the motion of the can from the engagement position to the predetermined intermediate position (or any position of entering a locking sequence for locking the can to the frame arrangement), provides sufficient time for the dynamic weighing unit 101 to provide optimal and correct weighing of the can to be emptied from garbage (not shown) within the well-defined time window.

At the same time, there is provided that there is a check made by the computer 105 detecting that the movable locking mechanism 11' locks the can and/or that the locking is made properly at the predetermined intermediate position PIP reached along a motion path of the can.

Alternatively, a detector 42 detects the emptying position for commanding stop of moving the frame arrangement and return the emptied can back to a disengagement position.

Fig. 6 illustrates a portion of a frame arrangement 3 of a dynamic weighing unit 101 according to a further example. A movable locking bar 11" of a cylinder housing 16 attached to the frame arrangement is moved into locking position for locking a garbage can 5 to the frame arrangement 3 when the garbage can 5 has been moved by the frame arrangement 3 21 to a predetermined intermediate position. The movable locking bar IT' is driven by an electric drive (not shown) into a bore 18 of the garbage can 5 and through a co-linear through hole of an engaging portion 7 of the frame arrangement 3.

A computer 105 of the dynamic weighing unit 101 is electrically coupled to an in-motion weighing stop detector 107. The in-motion weighing stop detector 107 indicates the motion of the movable locking bar IT' and signals to the computer 105 that the garbage can 5 is in the predetermined intermediate position wherein the computer 105 stops the dynamic weighing of the garbage can 5 performed by a weighing device 103 of the dynamic weighing unit 101.

The in-motion weighing stop detector 107 may comprises a first electro-mechanical gyroscope unit and/or a first accelerometer unit and/or a magnetic field sensor unit or a distance measuring sensor unit measuring the reluctance by means of DC magnetic fields or any other suitable sensor device. The in-motion weighing stop detector 107 and the weighing device 103 are electrically coupled to the computer 105.

Fig. 7 illustrates a flowchart showing an exemplary method of weighing a can and/or a frame arrangement under motion by means of an in-motion weighing system. The in-motion weighing system comprises a frame arrangement designed to move a can from an engagement position to an emptying position, a first sensor device configured to detect engagement of the can to an engaging portion of the frame arrangement; a drive motor coupled to the frame arrangement for driving the frame arrangement from said engagement position to said emptying position, a locking device of the frame arrangement configured for locking the can to said engaging portion in a predetermined intermediate position; a second sensor device configured to detect the predetermined intermediate position, and an electronic control circuitry electrically coupled to said first sensor device and/or to the second sensor device and/or to the locking device and/or to the drive device; wherein the frame arrangement comprises a dynamic weighing unit configured to weigh the can device and/or frame arrangement in any position and/or continuously along a motion path from the engagement position to the predetermined intermediate position, wherein the dynamic weighing unit is configured to detect motion and/or activation of the locking device locking the can to said engaging portion in said predetermined intermediate position. The method starts at step 701. Step 702 comprises performance of the method. Step 703 comprises stop of the method.

Step 702 may comprise the steps of engaging the can to the engaging portion of the frame arrangement, moving the can from the engagement position to the emptying position, locking the can to the engaging portion at the predetermined intermediate position, detecting motion and/or activation of the locking device, and weighing the can and/or frame arrangement in motion from the engagement position to the predetermined intermediate position. 22

Fig. 8 illustrates a flowchart showing an exemplary method of weighing a can and/or a frame arrangement under motion by means of a by means of a dynamic weighing unit. The dynamic weighing unit is configured to weigh a can and/or a frame arrangement during motion from an engagement position to a predetermined intermediate position, wherein the dynamic weighing unit is configured to detect start of motion of the can and/or frame arrangement and configured to detect motion and/or activation of a locking device configured to lock the can to an engaging portion of the frame arrangement in the predetermined intermediate position so that the dynamic weighing unit during a well- defined time window provides weighing of the can and/or frame arrangement. The method starts at step 801. Step 802 comprises performance of the method. Step 803 comprises stop of the method.

Step 802 may comprise the steps of; detecting start motion of the can and/or frame arrangement from the engagement position, detecting motion and/or activation of the locking device, weighing the can and/or frame arrangement in motion from the engagement position to the predetermined intermediate position within a well-defined time window.

Fig. 9 illustrates a flowchart showing an exemplary method of weighing a can and/or a frame arrangement under motion by means of a by means of the dynamic weighing unit stated in Fig. 8. The method starts at step 901. Step 902 comprises engaging the can to the frame arrangement. Step 903 comprises moving the can to a stop position. Step 904 comprises moving the can from the stop position whereas dynamic weighing starts. Step 905 comprises moving the can to a predetermined intermediate position. Step 906 comprises locking the can to the frame arrangement. Step 907 comprises signalling said locking indicating commanding stop of the dynamic weighing. Step 908 comprises moving the can to an emptying position. Step 909 comprises stop of the method.

Fig. 10 illustrates a computer 105 of a dynamic weighing unit 101 according to a further example. The computer 105 is configured to control any exemplary method described herein. The computer 105 may comprise a non-volatile memory NVM 1020, which is a computer memory that can retain stored information even when the computer 105 not being powered. The computer 105 further comprises a processing unit 1010 and a read/write memory 1050. The NVM 1020 comprises a first memory unit 1030. A computer program (which can be of any type suitable for any operational database) is stored in the first memory unit 1030 for controlling the functionality of the control circuitry 100.

Furthermore, the computer 105 comprises a bus controller (not shown), a serial communication port (not shown) providing a physical interface, through which information transfers separately in two directions. The computer 105 also comprises any suitable type of I/O module (not shown) providing input/output signal transfer, an A/D converter (not shown) for converting continuously varying signals from the sensor devices and different monitoring units (not shown) into binary code suitable to be processed by the computer 105. 23

The computer 105 also comprises an input/output unit (not shown) for adaption to time and date. The computer 105 also may comprise an event counter (not shown) for counting the number of event multiples that occur during motion of the frame arrangement from the engagement position to the emptying position. Furthermore, the computer 105 includes interrupt units (not shown) for providing a multi-tasking performance and real time computing. The NVM 1020 also includes a second memory unit 1040 for external controlled operation.

A data medium adapted for storing a data program P comprises driver routines adapted for commanding the operating of the electro-hydraulic linear actuator in response to operation of the dynamic weighing unit and operation of the frame arrangement of a garbage truck.

The data program P is adapted for operating the computer 105 in performing any exemplary method described herein. The data program P comprises routines for executing the commands under operation of the dynamic weighing of the can. The data program P comprises a program code, which is readable on the computer 105, for causing the computer 105 to perform an exemplary method herein described.

The data program P further may be stored in a separate memory 1060 and/or in a read/write memory 1050. The data program P is in this embodiment stored in executable or compressed data format.

It is to be understood that when the processing unit 1010 is described to execute a specific function that involves that the processing unit 1010 executes a certain part of the program stored in the separate memory 1060 or a certain part of the program stored in the read/write memory 1050.

The processing unit 1010 is associated with a signal port 999 for communication via a first data bus 1015, which signal port 999 may be adapted to be electrically coupled to an electronic control circuitry of an in-motion weighing system.

The non-volatile memory NVM 1020 is adapted for communication with the processing unit 1010 via a second data bus 1012. The separate memory 1060 is adapted for communication with the processing unit 1010 via a third data bus 1011. The read/write memory 1050 is adapted to communicate with the processing unit 1010 via a fourth data bus 1014. The signal (data) port 999 may be connectable to data links of e.g. a network device comprising the computer 105.

When data is received by the signal port 999, the data will be stored temporary in the second memory unit 1040. After that the received data is temporary stored, the processing unit 1010 will be ready to execute the program code, in accordance with the exemplary methods. 24

Preferably, the signals (received by the signal port 999) comprise information about operational status of the dynamic weighing unit 101.

The received signals at the signal port 999, such as a serial bus, may be used by the computer 105 for controlling and monitoring the motion of the frame arrangement. The signals received by the signal port 999 can be used for historic data and data regarding operation of the dynamic weighing unit 101.

The dynamic weighing unit 101 may be configured to be coupled to a data network via the signal buss configured for electrical interface explicitly providing electrical compatibility and related data transfer, which data may include information about status of the dynamic weighing unit 101 and sensor devices.

Data may also be manually fed to or presented from the computer 105 via a suitable communication device, such as a display (not shown).

Separate sequences of the method may be executed by the computer 105, wherein the computer 105 runs the data program P being stored in the separate memory 1060 or the read/write memory 1050. When the computer 105 runs the data program P, the suitable method steps disclosed herein will be executed.

A data program product comprising a program code stored on a data medium may be provided, which product is readable on a suitable computer, for performing the exemplary method steps herein, when the data program P is run on the computer 105. The present invention is of course not in any way restricted to the preferred embodiments described above, but many possibilities to modifications, or combinations of the described embodiments thereof should be apparent to a person with ordinary skill in the art without departing from the basic idea of the invention as defined in the appended claims.

Claims

25 CLAIMS

1. An in-motion weighing system (1) comprising;

-a frame arrangement (3) designed to move a can device (5) from an engagement position (ENG) to an emptying position (EMP);

-a first sensor device (15) configured to detect engagement of the can (5) to an engaging portion (7) of the frame arrangement (3);

-a driving device (9) coupled to the frame arrangement (3) for driving the frame arrangement (3) from said engagement position (ENG) to said emptying position (EMP);

-a locking device (11, IT, IT') of the frame arrangement (3) configured for locking the can device (5) to said engaging portion (7) in a predetermined intermediate position (PIP);

-a second sensor device (19) configured to detect the predetermined intermediate position (PIP);

-an electronic control circuitry (13) electrically coupled to said first sensor device (15) and/or to the second sensor device (19) and/or to the locking device (11, IT, 11") and/or to the drive device (9);

-the frame arrangement (3) comprises a dynamic weighing unit (101) configured to weigh the can device (5) and/or frame arrangement (3) in any position and/or continuously along a motion path from the engagement position (ENG) to the predetermined intermediate position (PIP), wherein the dynamic weighing unit (101) is configured to detect motion and/or activation of the locking device (11, IT, 11") locking the can device (5) to said engaging portion (7) in said predetermined intermediate position (PIP).

2. The in-motion weighing system (1) according to claim 1, wherein the dynamic weighing unit (101) comprises an in-motion weighing stop detector device (107) configured to detect motion and/or activation of the locking device (11, IT, 11") locking the can device (5) to said engaging portion (7).

3. The in-motion weighing system (1) according to claim 1 or 2, wherein an actuator unit (14) of the locking device (11) is electrically coupled to and being activated by the electronic control circuitry (13) for moving a securing member (17) of the locking device (11, IT, 11") into a locking state, wherein the can device (5) is locked to the engaging portion (7) of the frame arrangement (3). 26

4. The in-motion weighing system (1) according to claim 2 or 3, wherein the in-motion weighing stop detector device (107) is electrically coupled to a computer (105) of the dynamic weighing unit (101) for commanding in-motion weighing stop.

5. A method of weighing a can device (5) by means of an in-motion weighing system (1) comprising; a frame arrangement (7) designed to move the can device (5) from an engagement position (ENG) to an emptying position (EMP); a first sensor device (15) configured to detect engagement of the can device (5) to an engaging portion (7) of the frame arrangement (3); a drive device (9) coupled to the frame arrangement (3) for driving the frame arrangement (3) from said engagement position (ENG) to said emptying position (EMP); a locking device (11, 11', 11") of the frame arrangement (3) configured for locking the can device (5) to the engaging portion (7) in a predetermined intermediate position (PIP); a second sensor device (19) configured to detect the predetermined intermediate position (PIP); an electronic control circuitry (13) electrically coupled to said first sensor device (15) and/or to the second sensor device (19) and/or to the locking device (11, 11', 11") and/or to the drive device (9); the frame arrangement (3) comprises a dynamic weighing unit (101) configured to weigh the can device (5) and/or frame arrangement (3) in any position and/or continuously along a motion path from the engagement position (ENG) to the predetermined intermediate position (PIP), wherein the dynamic weighing unit (101) is configured to detect motion and/or activation of the locking device (11, 11', 11") when locking the can device (5) to said engaging portion (7) in said predetermined intermediate position (PIP); the method comprises the steps:

-engage the can device (5) to the engaging portion (7) of the frame arrangement (3); -move the can device (5) from the engagement position (ENG) to the emptying position (EMP);

-lock the can device (5) to the engaging portion (7) at the predetermined intermediate position (PIP);

-detect motion and/or activation of the locking device (11, 1 , 11") for determining said predetermined intermediate position (PIP);

-weigh the can device (5) and/or frame arrangement (3) in motion from the engagement position (ENG) to the predetermined intermediate position (PIP).

6. The method according to claim 5, wherein the step of detecting motion and/or activation of the locking device (11, 11', 11") is performed by an in-motion weighing stop detector device (107) configured to detect motion and/or activation of the locking device (11, 1 , 11").

7. A dynamic weighing unit (101) configured to weigh a can device (5) and/or a frame arrangement (3) in any position and/or continuously along a motion path from the engagement position (ENG) to the predetermined intermediate position (PIP), 27 wherein the dynamic weighing unit (101) is configured to detect start of motion of the can device (5) and/or frame arrangement (3) and configured to detect motion and/or activation of a locking device (11, 1 , 11") configured to lock the can device (5) to an engaging portion (7) of the frame arrangement (3) in the predetermined intermediate position (PIP).

8. The dynamic weighing unit (101) according to claim 7, wherein the dynamic weighing unit (101) comprises;

-an in-motion weighing stop detector device (107) configured to detect motion and/or activation of the locking device (11, 11', 11"),

-an actuator unit (14) of the locking device (11, 1 , 11") is configured the move a securing member (17) into a locking state for locking the can device (5) to the engaging portion (7); and

-the in-motion weighing stop detector device (107) is electrically coupled to a computer (105) of the dynamic weighing unit (101) for commanding in-motion weighing stop.

9. A method of weighing a can device (5) and/or a frame arrangement (3) under motion from an engagement position (ENG) to a predetermined intermediate position (PIP) by means of a dynamic weighing unit (101), wherein the dynamic weighing unit (101) is configured to detect motion and/or activation of a locking device (11, 11', 11") configured to lock the can device (5) to an engaging portion (ENG) of the frame arrangement (3) in the predetermined intermediate position (PIP), a first sensor device (15) detects start of a time window for dynamic weighing and an in-motion weighing stop detector device (107) detects motion and/or activation of the locking device (11, 11', 11") for providing a signal to a computer (105) commanding in motion weighing stop, the method comprises the steps of:

-detect start motion of the can device (5) and/or frame arrangement (3) from the engagement position (ENG);

-detect motion and/or activation of the locking device (11, 1 , 11");

-weigh the can device (5) and/or frame arrangement (3) in any position and/or continuously along a motion path from the engagement position (ENG) to the predetermined intermediate position (PIP).

10. The dynamic weighing unit (101) according to claim 7, wherein a first sensor device (15) of the dynamic weighing unit (101) is configured to signal start of the well- defined time window and the in-motion weighing stop detector device (107) is configured to signal stop of the well-defined time window, the first sensor device (15) and the in-motion weighing stop detector device (107) are electrically coupled to a computer (105) of the dynamic weighing unit (101) for commanding start and stop 28 of the in-motion weighing, which computer (105) is configured to control the method according to claim 9. A data medium, configured for storing a program (P), programmed for controlling the dynamic weighing unit (101) according to claim 8, wherein the data medium comprises a program code being readable on the computer (105) for performing the method steps according to claim 9.