Devices that control the dispensing of materials into receptacles, and method of controlling dispensing

Patent metadata

Field	Value
Publication number	US-10875758-B2
Application number	US-201916520875-A
Country	US
Kind code	B2
Filing date	Jul 24, 2019
Priority date	Jul 25, 2018
Publication date	Dec 29, 2020
Grant date	Dec 29, 2020

Abstract

A dispenser control device, comprising: at least a first light emitter and at least a first light detector, a memory component, a calculation component and a signal transmitter. The dispenser control device configured to conduct one or more of (1) calibration, (2) receptacle-type conjecturing, (3) stopping-intensity value determination, (4) receptacle filling status assessment, and (5) dispensing-termination signal transmission. Also methods comprising one or more of (1) calibration, (2) receptacle-type conjecturing, (3) stopping-intensity value determination, (4) receptacle filling status assessment, and (5) dispensing-termination signal transmission.

First claim

The invention claimed is:

1. A dispenser control device, comprising:
at least a first light emitter and at least a first light detector;
a memory component;
a calculation component; and
a signal transmitter,
the dispenser control device configured to conduct a sequence of activities comprising (1) calibration, (2) receptacle-type conjecturing after said calibration, (3) stopping-intensity value determination after said receptacle-type conjecturing, (4) receptacle filling status assessment after said stopping-intensity value determination, and (5) dispensing-termination signal transmission after said receptacle filling status assessment,
said calibration comprising:
(a) setting a light pulse quantity at an initial light pulse quantity; then
(b) repeating a calibration sequence comprising:
(i) emitting from the first light emitter a calibration series of light pulses, each of said calibration series of light pulses substantially of a first light emission intensity, the calibration series of light pulses consisting of a quantity of light pulses equal to the light pulse quantity;
(ii) each light detector detecting an intensity of reflected light of each light pulse in the calibration series of light pulses;
(iii) for each light detector, summing the respective intensities of reflected light of the light pulses in the calibration series of light pulses to determine an aggregate calibration reflected light intensity value for the light detector;
(iv) comparing the aggregate calibration reflected light intensity value for each light detector with a maximum calibration aggregate reflected light intensity value; and then
(v) if the aggregate calibration reflected light intensity value for each light detector is less than the maximum calibration aggregate reflected IR intensity value, increasing the light pulse quantity by a light pulse calibration increase value,

until the aggregate calibration reflected light intensity value for at least one light detector equals or exceeds the maximum calibration aggregate reflected light intensity value; and then
(c) decreasing the light pulse quantity by a light pulse calibration decrease value to arrive at a calibrated light pulse quantity;

said receptacle-type conjecturing comprising:
while material is being dispensed from a dispenser into a receptacle:
emitting from the first light emitter a first series of light pulses, each of said first series of light pulses substantially of the first light emission intensity, the first series of light pulses consisting of a quantity of light pulses equal to the calibrated light pulse quantity;
each light detector detecting an intensity of reflected light of each light pulse in the first series of light pulses;
for each light detector, summing the respective intensities of reflected light of the light pulses in the first series of light pulses to determine a first aggregate reflected light intensity value;
summing the respective first aggregate reflected light intensity values to determine a first combined reflected intensity value; then
waiting a period of time equal to a receptacle-type conjecturing interval; then
emitting from the first light emitter a second series of light pulses, each of said second series of light pulses substantially of the first light emission intensity, the second series of light pulses consisting of a quantity of light pulses equal to the calibrated light pulse quantity;
each light detector detecting an intensity of reflected light of each light pulse in the second series of light pulses;
for each light detector, summing the respective intensities of reflected light of the light pulses in the second series of light pulses to determine a second aggregate reflected light intensity value;
summing the respective second aggregate reflected light intensity values to determine a second combined reflected intensity value; then

the calculation component determining a combined reflected light slope of change, the combined reflected light slope of change equal to:
(the second combined reflected light intensity value minus the first combined reflected light intensity value) divided by the length of time between the first series of light pulses and the second series of light pulses; then

the calculation component comparing the combined reflected light slope of change with stored slope of reflected light change values for respective receptacle types stored in the memory component; and then
the calculation component selecting a conjectured receptacle type, from among receptacle types stored in the memory component, that has a stored slope of reflected light change value that is closest to the combined reflected light slope of change,

said stopping-intensity value determination comprising the calculation component determining a light reflection intensity value at which dispensing should be terminated, said light reflection intensity value at which dispensing should be terminated equal to:
the first combined reflected light intensity value divided by a receptacle constant, the receptacle constant equal to a stored value for the conjectured receptacle type,

said receptacle filling status assessment comprising:
the calculation component repeating a combined light intensity value comparison sequence comprising:
emitting from the first light emitter a status-assessment series of light pulses, each of said status-assessment series of light pulses substantially of the first light emission intensity, the status-assessment series of light pulses consisting of a quantity of light pulses equal to the calibrated light pulse quantity;
each light detector detecting an intensity of reflected light of each light pulse in the status-assessment series of light pulses;
for each light detector, summing the respective intensities of reflected light of each light pulse in the status-assessment series of light pulses to determine a status-assessment aggregate reflected light intensity value;
summing the respective status-assessment aggregate reflected light intensity values to determine a status-assessment combined reflected light intensity value,
comparing the status-assessment combined reflected light intensity value with said light reflection intensity value at which dispensing should be terminated; and then
if the status-assessment combined reflected light intensity value is greater than said light reflection intensity value at which dispensing should be terminated, waiting a status-assessment interval,

until the status-assessment combined reflected light intensity value is less than or equal to said light reflection intensity value at which dispensing should be terminated;

said dispensing-termination signal transmission comprising:
upon the calculation component determining that the status-assessment combined reflected light intensity value is less than or equal to said light reflection intensity value at which dispensing should be terminated, the signal transmitter transmitting a dispensing-termination signal, the dispensing-termination signal instructing a dispenser to terminate dispensing.

2. A dispenser control device as recited in claim 1 , wherein the first light emitter emits the first series of light pulses a first reading delay period of time after initiation of said material being dispensed from the dispenser into the receptacle.

3. A dispenser control device as recited in claim 1 , wherein the sequence of activities is initiated automatically upon the dispenser control device sensing that a receptacle is located in a material-receiving location.

4. A dispenser control device as recited in claim 1 , wherein the sequence of activities is initiated automatically upon a dispensing request being generated.

5. A dispenser control device as recited in claim 1 , wherein the first light emitte

Assignees

• Marquardt Gmbh

Inventors

• Mcmahon Stephen

Classifications

• G01S7/497

  Means for monitoring or calibrating · CPC title

• B67D1/0888 Primary

  Means comprising electronic circuitry (e.g. control panels, switching or controlling means) · CPC title

• G01S17/08

  for measuring distance only (indirect measurement G01S17/46; active triangulation systems G01S17/48) · CPC title

• G01S17/04

  Systems determining the presence of a target · CPC title

• B67D1/0878

  Safety, warning or controlling devices (B67D1/12 takes precedence) · CPC title