CN109581534B - Water-free detection method for cup - Google Patents
Water-free detection method for cup Download PDFInfo
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- CN109581534B CN109581534B CN201811484314.8A CN201811484314A CN109581534B CN 109581534 B CN109581534 B CN 109581534B CN 201811484314 A CN201811484314 A CN 201811484314A CN 109581534 B CN109581534 B CN 109581534B
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- 238000001514 detection method Methods 0.000 title claims abstract description 57
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 177
- 238000010438 heat treatment Methods 0.000 claims abstract description 151
- 238000000034 method Methods 0.000 claims abstract description 26
- 238000001816 cooling Methods 0.000 claims description 24
- 230000001133 acceleration Effects 0.000 claims description 23
- 230000008859 change Effects 0.000 claims description 19
- 239000013049 sediment Substances 0.000 claims description 14
- 238000013459 approach Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 10
- 101100327917 Caenorhabditis elegans chup-1 gene Proteins 0.000 description 28
- 238000004321 preservation Methods 0.000 description 13
- 206010053615 Thermal burn Diseases 0.000 description 4
- 230000009467 reduction Effects 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 238000010792 warming Methods 0.000 description 2
- 241001122767 Theaceae Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 235000013322 soy milk Nutrition 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V9/00—Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00
- G01V9/005—Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00 by thermal methods, e.g. after generation of heat by chemical reactions
Abstract
The invention discloses a method for detecting the absence of water in a cup, which comprises the following steps: acquiring and recording the temperature of a heating sheet arranged at the bottom of a cup, the temperature of a low water level position close to the bottom of the cup and the temperature of a high water level position above the low water level at regular intervals, caching, then comparing the heating sheet, the high water level and the current temperature of the low water level position with a preset temperature value I, and judging whether the current temperature of any one of the heating sheet, the high water level and the low water level position is higher than the preset temperature value I; and if so, outputting a waterless result to a display screen on the cup and stopping waterless detection. The invention can know whether the cup is empty or not without opening the cup cover or designing the cup to be transparent, thereby being more convenient to use.
Description
[ technical field ] A method for producing a semiconductor device
The invention belongs to the field of articles for daily use, and particularly relates to a water-free detection method of a cup.
[ background of the invention ]
The current intelligent mug in market does not have the function that anhydrous detection detected, when the mug was put on the desk, need open the cup lid or make the cup transparent just can observe, judge whether there is water in the cup, and is more troublesome.
[ summary of the invention ]
The invention provides a method for detecting the water absence of a cup, which solves the problem that whether the cup is placed on a table or not cannot know whether water exists in the cup or not.
In order to solve the above problems, the present invention provides the following technical solutions: a method of detecting absence of water in a cup, comprising:
acquiring and recording the temperature of a heating sheet arranged at the bottom of a cup, the temperature of a low water level position close to the bottom of the cup and the temperature of a high water level position above the low water level at regular intervals, caching, then comparing the heating sheet, the high water level and the current temperature of the low water level position with a preset temperature value I, and judging whether the current temperature of any one of the heating sheet, the high water level and the low water level position is higher than the preset temperature value I; and if so, outputting a waterless result to a display screen on the cup and stopping waterless detection.
The display screen is located on the side wall of the cup, the fixed time is 0.5 second, and the first preset temperature value is 99 ℃.
If the current temperature of any one of the heating sheet, the high water level and the low water level is not higher than a preset first temperature value, subtracting the current temperature of the low water level from the current temperature of the heating sheet to obtain a first temperature difference, comparing the first temperature difference with a set difference value I, and judging whether the first temperature difference is lower than the set difference value I; if the first temperature difference is not lower than the first set difference value, heating the heating sheet, collecting three temperatures of the heating sheet at a fixed time interval continuously during heating, sequentially setting the three temperatures as a first temperature, a second temperature and a third temperature, calculating a first slope value by using the second temperature and the first temperature, calculating a second slope value by using the third temperature and the second temperature, comparing the first slope value and the second slope value with a first preset slope value, and judging whether the first slope value and the second slope value are larger than the first preset slope value; if the judgment result is yes, outputting a precipitate-free and anhydrous result to the display screen, and stopping anhydrous detection; if the judgment result is negative, outputting the sediment and water to the display screen, and stopping the anhydrous detection.
The first set difference value is 15 ℃, and the first preset slope value is 60.
If the first temperature difference is lower than the first set difference value, calculating the temperature difference by using the current temperature of the heating sheet and at least two temperatures before and after the current temperature of the heating sheet;
subtracting the previous temperature of the current temperature of the heating sheet from the current temperature of the heating sheet to obtain a second temperature difference; obtaining a third temperature difference by subtracting the first two temperatures of the current temperature of the heating sheet from the previous temperature of the current temperature of the heating sheet; subtracting the current temperature of the heating sheet from the latter temperature of the current temperature of the heating sheet to obtain a fourth temperature difference; subtracting the latter temperature of the current temperature of the heating sheet from the latter two temperatures of the current temperature of the heating sheet to obtain a fifth temperature difference;
fitting temperature curves by utilizing at least two temperatures before and after the current temperature of the heating sheet and the current temperature of the heating sheet, comparing the absolute values of the second temperature difference and the third temperature difference with a second set difference value, comparing the absolute values of the fourth temperature difference and the fifth temperature difference with a third set difference value, comparing the fitted temperature curves with two preset temperature curves, and judging whether the absolute values of the second temperature difference and the third temperature difference are greater than the second set difference value, whether the absolute values of the fourth temperature difference and the fifth temperature difference are smaller than the third set difference value, and whether the fitted temperature curves approach to any one of the two preset temperature curves;
if the absolute values of the second temperature difference and the third temperature difference are larger than a set difference value two, the absolute values of the fourth temperature difference and the fifth temperature difference are smaller than a set difference value three, the fitted temperature curve approaches to one of the two preset temperature curves, outputting a water result to the display screen, and stopping the water-free detection;
if the absolute values of the second temperature difference and the third temperature difference are judged to be not more than a set difference value two, or the absolute values of the fourth temperature difference and the fifth temperature difference are judged to be not less than a set difference value three, or the fitted temperature curve does not approach any one of the two preset temperature curves, acquiring the current inclination information of the cup through a three-axis acceleration sensor arranged on the cup, wherein the current inclination information of the cup is represented by the current Z-axis coordinate value of the three-axis acceleration sensor, and the current inclination information of the cup is the preset inclination information three when the cup is normally placed on a table; when the cup is laterally overturned on a table, the current inclination information of the cup is preset inclination information I; when the cup mouth of the cup is inclined downwards, the current inclination information of the cup is preset inclination information IV; comparing the current inclination information of the cup with preset inclination information I, and judging whether the current inclination information of the cup is greater than the preset inclination information I; and if the judgment result is yes, outputting a waterless result to the display screen, and stopping waterless detection.
The set difference value two is 5 ℃, the set difference value three is 1.5 ℃, and the two preset temperature curves are temperature change curves of the heating sheet measured by adding 50 ℃ water and adding 20 ℃ water to the cup when the temperature of the empty cup body is 35 ℃; the preset first inclination information is that the Z-axis coordinate value of the triaxial acceleration sensor is equal to zero, the preset third inclination information is that the Z-axis coordinate value of the triaxial acceleration sensor (15) is equal to minus two and five zero, and the preset fourth inclination information is that the Z-axis coordinate value of the triaxial acceleration sensor (15) is greater than zero.
If the current inclination information of the cup is judged to be not greater than the preset inclination information I, acquiring the current temperature at the low water level and the current state information of the display screen, comparing the current temperature at the low water level with a preset temperature value II, the current inclination information of the cup with a preset inclination information II, and judging whether the current temperature at the low water level is less than the preset temperature value II, the current inclination information of the cup is less than the preset inclination information II, and the display screen is in a bright state currently; if the current temperature at the low water level is smaller than the preset temperature value II, the current inclination information of the cup is smaller than the preset inclination information II, and the display screen is in a bright state at present, performing heating temperature rise or natural cooling slope detection on the heating sheet, calculating a slope value III of temperature change of the heating sheet in the heating temperature rise or natural cooling process, and judging whether the slope value III is in a preset slope range; if the judgment result is yes, outputting a waterless result to the display screen, and stopping waterless detection; if the judgment result is negative, outputting the judgment result that water exists on the display screen, and stopping the water-free detection.
The preset temperature value II is 40 ℃, the preset inclination information II is that the Z-axis coordinate value of the triaxial acceleration sensor is minus one eighth zero, the preset inclination range is that the inclination is <0 or >40 when no water exists, and the inclination is >40 when water exists.
If the current temperature at the low water level is not less than the preset temperature value II, or the current inclination information of the cup is not less than the preset inclination information II, or the display screen is not in a bright state currently, judging whether the current inclination information of the cup is equal to preset inclination information III or not, and whether the display screen is in a bright state currently;
if the current inclination information of the cup is not equal to the preset inclination information III or the display screen is not in a bright state, the waterless detection is directly finished;
if the current inclination information of the cup is equal to the preset inclination information III and the display screen is in a bright state at present, carrying out heating temperature rise or natural cooling slope detection on the heating sheet, calculating a slope value IV of temperature change of the heating sheet in the heating temperature rise or natural cooling process, and judging whether the slope value IV is in the preset slope range; if the judgment result is yes, outputting a waterless result to the display screen, and stopping waterless detection; if the judgment result is negative, outputting the judgment result that water exists on the display screen, and stopping the water-free detection.
The preset inclination information three is that the Z-axis coordinate value of the triaxial acceleration sensor is minus two five zero, the preset inclination range is that the inclination is <0 or >40 when no water exists, and the inclination is >40 when water exists.
Compared with the prior art, the invention has the beneficial effects that:
the temperature of the heating sheet arranged at the bottom of the cup and the temperatures of the high water level and the low water level of the cup are collected, then the heating sheet is compared with the high water level and the current temperature of the low water level and a preset temperature value, whether the cup is water-free or not is judged according to a comparison result, the judgment result is displayed on a display screen, and whether the cup is water-free or not can be known without opening a cup cover or designing the cup to be transparent, so that the cup is more convenient to use.
[ description of the drawings ]
FIG. 1 is a front view of an embodiment of the present invention.
Fig. 2 is a cross-sectional view of an embodiment of the present invention.
Fig. 3 is a bottom view of an embodiment of the present invention.
Fig. 4 is a block diagram of a process for performing a water-free determination according to an embodiment of the present invention.
FIG. 5 is a graph showing the temperature change of the cup according to the embodiment of the present invention after adding water of 50 ℃ and 20 ℃ respectively when the temperature of the empty cup body is 35 ℃.
FIG. 6 is a temperature change curve of the heating sheet when the temperature of the cup is increased with or without water.
FIG. 7 is a temperature variation curve of the heating sheet in the cup according to the embodiment of the present invention under the natural cooling condition when water is present and water is absent.
[ detailed description ] embodiments
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Example (b): referring to fig. 1 to 7, the present embodiment is a method for detecting a cup without water, and the detection procedure is performed as shown in fig. 4, and includes the following steps:
acquiring and recording the temperature of a heating sheet 11 arranged at the bottom of a cup 1, the temperature of a low water level 12 close to the bottom of the cup 1 and the temperature of a high water level 13 above the low water level 12 at fixed intervals, caching, wherein the fixed time is 0.5 second, then comparing the current temperatures of the heating sheet 11, the high water level 13 and the low water level 12 with a preset temperature value I, wherein the preset temperature value I is 99 ℃, and judging whether the current temperature of any one of the heating sheet 11, the high water level 13 and the low water level 12 is higher than the preset temperature value I; if the judgment result is yes, outputting a water-free result to a display screen 14 positioned on the cup 1, and stopping the water-free detection, wherein the display screen 14 is positioned on the side wall of the cup 1, as shown in the attached figure 1. When the temperature of the heating plate 11 and one of the high water level 13 and the low water level 12 is higher than 99 ℃, it indicates that no water or water in the cup is evaporated to dryness, resulting in an excessively high temperature, and thus whether water exists in the cup can be determined by determining whether the temperature of the heating plate 11 and any one of the high water level 13 and the low water level 12 is higher than 99 ℃. When no water is detected, the heat preservation heating of the cup can be stopped, the bottom of the cup caused by continuous heat preservation heating is prevented from being burnt out due to high temperature, and meanwhile, unnecessary electric energy loss caused by continuous heat preservation after the water in the cup is evaporated is avoided.
If the current temperature of any one of the heating sheet 11, the high water level 13 and the low water level 12 is not higher than a preset first temperature value, subtracting the current temperature of the low water level 12 from the current temperature of the heating sheet 11 to obtain a first temperature difference, comparing the first temperature difference with a set difference value I, and judging whether the first temperature difference is lower than the set difference value I; if the first temperature difference is not lower than the first set difference value which is 15 ℃, heating the heating sheet 11, collecting the three temperatures of the three fixed time intervals which are continuous when the heating sheet 11 is heated, and setting the three temperatures as a first temperature, a second temperature and a third temperature according to the sequence, calculating a first slope value by using the second temperature and the first temperature, calculating a second slope value by using the third temperature and the second temperature, and comparing the first slope value and the second slope value with a first preset slope value, wherein the first preset slope value is 60; judging whether the first slope value and the second slope value are larger than a preset slope value; if the judgment result is yes, outputting a precipitate-free and anhydrous result to the display screen 14, and stopping anhydrous detection; if the judgment result is negative, the sediment and water are output to the display screen 14, and the water-free detection is stopped. When the water in the cup 1 drops to the low water level 12, the temperature of the water surface is higher than that of the bottom of the cup 1, and whether the water exists in the cup 1 is judged by comparing whether the difference between the temperatures of the heating sheet 11 at the bottom of the cup and the low water level 12 conforms to the difference. Judging whether the bottom of the cup has sediment or not by utilizing the temperature rising slope of the heating sheet, wherein the temperature rising slope of the heating sheet is different when the bottom of the cup has the sediment or not; when sediment is at the bottom of the cup, the temperature of the heating sheet rises slowly due to the obstruction of the sediment, so the slope is small; when no sediment exists at the bottom of the cup, the temperature of the heating sheet rises faster because of no sediment, so the slope is larger; therefore, the heating slope detection of the heating sheet can judge whether the sediment exists at the bottom of the cup according to the slope value. The judgment of whether the sediment exists or not is carried out to prevent the phenomenon that the sediment burns due to continuous heat preservation when the cup is used for brewing foods such as soymilk, coffee, tea leaves, oat and the like and the phenomenon that the sediment is judged to be anhydrous due to slow heat transfer when the sediment exists. When no water is detected, the heat preservation heating of the cup can be stopped, the bottom of the cup caused by continuous heat preservation heating is prevented from being burnt out due to high temperature, and meanwhile, unnecessary electric energy loss caused by continuous heat preservation after the water in the cup is evaporated is avoided.
If the first temperature difference is lower than the first set difference value, calculating a temperature difference by using at least two temperatures before and after the current temperature of the heating sheet 11 and the current temperature of the heating sheet 11;
subtracting the previous temperature of the current temperature of the heating sheet 11 from the current temperature of the heating sheet 11 to obtain a second temperature difference; subtracting the first two temperatures of the current temperature of the heating sheet 11 from the previous temperature of the current temperature of the heating sheet 11 to obtain a third temperature difference; subtracting the current temperature of the heating sheet 11 from the latter temperature of the current temperature of the heating sheet 11 to obtain a fourth temperature difference; subtracting the current latter temperature of the heating sheet 11 from the latter two temperatures of the current temperature of the heating sheet 11 to obtain a fifth temperature difference;
fitting temperature curves by utilizing at least two temperatures before and after the current temperature of the heating sheet 11 and the current temperature of the heating sheet 11, then comparing the absolute values of the second temperature difference and the third temperature difference with a set difference value II, wherein the set difference value II is 5 ℃, comparing the absolute values of the fourth temperature difference and the fifth temperature difference with a set difference value III, wherein the set difference value III is 1.5 ℃, comparing the fitted temperature curves with two preset temperature curves, and judging whether the absolute values of the second temperature difference and the third temperature difference are greater than the set difference value II, whether the absolute values of the fourth temperature difference and the fifth temperature difference are smaller than the set difference value III, and whether the fitted temperature curve approaches to any one of the two preset temperature curves; the two preset temperature curves are respectively temperature change curves of the heating sheet 11 measured by adding 50 ℃ water and adding 20 ℃ water when the temperature of the empty cup body of the cup 1 is 35 ℃, and are shown in figure 5;
if the absolute values of the second temperature difference and the third temperature difference are judged to be larger than a second set difference value, the absolute values of the fourth temperature difference and the fifth temperature difference are judged to be smaller than a third set difference value, the fitted temperature curve approaches to one of the two preset temperature curves, a water result is output to the display screen 14, and the water-free detection is stopped; considering the state of water in the cup, if the cup is not heated, the temperature of hot water poured into the cup is changed, the temperature of the cup is generally increased, then the temperature of the water in the cup is gradually reduced, the difference value of at least two temperatures before and after the current temperature of the heating sheet and the current temperature of the heating sheet is calculated, the temperature of the water in the cup can be preliminarily judged to be increased or reduced and the temperature increase or reduction amplitude according to the magnitude and the positive and negative of the difference value, and if no water exists in the cup, the temperature in the cup is basically unchanged, and the temperature difference value is small. And then fitting the current temperature of the heating sheet and at least two temperatures before and after the current temperature of the heating sheet into a temperature curve, comparing the temperature curve with the set temperature curve, and determining whether the fitted temperature curve approaches to a heating curve or a cooling curve in a preset temperature curve or not, so as to judge whether water exists in the cup.
If the absolute values of the second temperature difference and the third temperature difference are judged to be not more than a set difference value two, or the absolute values of the fourth temperature difference and the fifth temperature difference are judged to be not less than a set difference value three, or the fitted temperature curve does not approach any one of the two preset temperature curves, acquiring the current inclination information of the cup 1 through a three-axis acceleration sensor 15 arranged on the cup 1, wherein the current inclination information of the cup 1 is represented by the current Z-axis coordinate value of the three-axis acceleration sensor 15, and the current inclination information of the cup 1 is the preset inclination information three when the cup 1 is normally placed on a table; when the cup 1 is laterally overturned on a table, the current inclination information of the cup 1 is preset inclination information I; when the cup mouth of the cup 1 is inclined downwards, the current inclination information of the cup 1 is preset inclination information IV; comparing the current inclination information of the cup 1 with preset inclination information I, and judging whether the current inclination information of the cup 1 is greater than the preset inclination information I, wherein the preset inclination information I is that the Z-axis coordinate value of the three-axis acceleration sensor 15 is equal to zero; if the judgment result is yes, outputting the anhydrous result to the display screen 14, and stopping anhydrous detection. The preset inclination information three is that the Z-axis coordinate value of the three-axis acceleration sensor 15 is equal to minus two and five zero, the preset inclination information four is that the Z-axis coordinate value of the three-axis acceleration sensor 15 is greater than zero, the judgment is carried out according to the meaning of the preset Z-axis coordinate value of the three-axis acceleration sensor, when the cup is normally placed on a table, the Z-axis coordinate value is minus two and five zero, when the cup is laterally placed on the table, the Z-axis coordinate value is zero, and when the cup opening of the cup faces downwards, the Z-axis coordinate value is greater than zero. When the current inclination information of the cup 1, namely the coordinate value of the Z axis, is larger than 0, the cup is in a state that the cup opening faces downwards, and if water exists in the cup, the cup can be poured out, so that the condition that the cup is empty of water can be judged. When no water is detected, the heat preservation heating of the cup can be stopped, the bottom of the cup caused by continuous heat preservation heating is prevented from being burnt out due to high temperature, and meanwhile, unnecessary electric energy loss caused by continuous heat preservation after the water in the cup is evaporated is avoided.
If the current inclination information of the cup 1 is judged to be not greater than the preset inclination information I, acquiring the current temperature at the low water level 12 and the current state information of the display screen 14, comparing the current temperature at the low water level 12 with a preset temperature value II, and the current inclination information of the cup 1 with a preset inclination information II, wherein the preset temperature value II is 40 ℃, the preset inclination information II is that the Z-axis coordinate value of the three-axis acceleration sensor 15 is minus one-eight zero, and judging whether the current temperature at the low water level 12 is less than the preset temperature value II, whether the current inclination information of the cup 1 is less than the preset inclination information II, and whether the display screen 14 is in a bright state currently; if the current temperature at the low water level 12 is smaller than the preset temperature value two, the current inclination information of the cup 1 is smaller than the preset inclination information two, and the display screen 14 is in a bright state, performing heating and temperature rise or natural cooling slope detection on the heating sheet 11, wherein the cup is placed at a normal position or has a certain inclination, but the included angle between the direction of the cup and the horizontal plane is less than 45 degrees, water cannot be poured out, the cup can be subjected to heating and temperature rise slope detection when placed on a table or held in a hand, calculating a third inclination value of the temperature change of the heating sheet 11 in the heating and temperature rise or natural cooling process, and judging whether the third inclination value is within a preset inclination range, wherein the preset inclination range is that the inclination is less than 0 or more than 40 when no water exists, and the inclination is more than 40 when water exists; if the judgment result is yes, outputting a waterless result to the display screen 14, and stopping waterless detection; if the judgment result is negative, the judgment result is that water exists in the display screen 14, and the water-free detection is stopped.
The second preset temperature value is used for determining the temperature of a human body capable of enduring the scald, and judging whether the temperature at the low water level is lower than the second preset temperature value or not, and judging whether the temperature is higher than the temperature of the human body capable of enduring the scald or not in order to avoid the scald possibly caused by water overflow or pouring out when the water is heated and detected in a cup in order to avoid the situation that the water is possibly heated and detected in the cup, and the temperature of the heating sheet is not greatly different from the temperature of the water in the cup. The cup can be taken up or subjected to heating slope detection in a state of a certain inclination angle only when the water in the cup is lower than 40 ℃. Of course, when the water in the cup is lower than 40 ℃, the cup is placed on a table, and the heating slope can be detected. When water is in the cup, temperature rise detection is carried out, the temperature of the heating sheet can be quickly transferred to the water in the cup, the temperature rise of the heating sheet is slow, and the corresponding slope is small; and the natural cooling detection is carried out, because the heat exchange speed of the water in the cup and the air is slower, the temperature of the heating sheet is reduced more slowly, and the corresponding slope is smaller. When no water exists in the cup, the temperature rise detection is carried out, the temperature of the heating sheet rises faster, and the corresponding slope is larger; the temperature of the heating piece is higher than that of the air, the heat of the heating piece is rapidly transmitted to the air, the temperature of the heating piece is reduced rapidly, and the corresponding temperature drop is large. Therefore, whether water exists in the cup can be judged by comparing whether the slope change range of the temperature of the heating sheet in the heating and warming or natural cooling slope detection is in the preset temperature slope range, see the attached drawings 6 and 7, when water exists in the cup, the curves of heating and warming or natural cooling are different, and whether the slope value is in the preset slope range can be calculated according to the temperature change to judge whether water exists in the cup or not; similarly, when no water exists in the cup, the heating or natural cooling curves are different, and whether the slope value is in the preset slope range or not can be calculated according to the temperature change to judge whether the water exists in the cup or not.
If the current temperature at the low water level 12 is not less than the preset temperature value two, or the current inclination information of the cup 1 is not less than the preset inclination information two, or the display screen is not in a bright state, judging whether the current inclination information of the cup 1 is equal to a preset inclination information three, and whether the display screen 14 is in a bright state, wherein the preset inclination information three is that a Z-axis coordinate value of the three-axis acceleration sensor 15 is minus two and five zero; if the current inclination information of the cup 1 is not equal to the preset inclination information III or the display screen 14 is not in a bright state, the waterless detection is directly finished; when the temperature is higher, if the inclination of the cup is larger, the water in the cup overflows or falls out to scald a user, so that no water is judged when the conditions are not met;
if the current inclination information of the cup 1 is equal to the preset inclination information three and the display screen 14 is in a bright state currently, performing heating temperature rise or natural cooling slope detection on the heating sheet 11, calculating a slope value four of temperature change of the heating sheet 11 in the heating temperature rise or natural cooling process, and judging whether the slope value four is in a preset slope range, wherein the preset slope range is slope <0 or slope >40 when water is absent and slope >40 when water is present; if the judgment result is yes, outputting a waterless result to the display screen 14, and stopping waterless detection; if the judgment result is negative, the judgment result is that water exists in the display screen 14, and the water-free detection is stopped. When the temperature of water in the cup is higher than or equal to 40 ℃, the cup needs to be placed on a table or other objects and placed still for three seconds in order to avoid scalding, and then the cup is placed, namely the coordinate value of the Z axis of the three-axis acceleration sensor is-250, so that the heating or natural cooling slope detection can be carried out. Then, whether water exists in the cup or not is judged by comparing whether the slope value of the temperature of the heating sheet in the slope detection of heating or natural cooling is within a preset temperature slope range or not, and whether water exists or not in the cup can be judged by calculating whether the slope value is within the preset slope range or not according to the temperature change when water exists in the cup and the curves of heating or natural cooling are different as shown in the attached figures 6 and 7; similarly, when no water exists in the cup, the heating or natural cooling curves are different, and whether the slope value is in the preset slope range or not can be calculated according to the temperature change to judge whether the water exists in the cup or not.
The invention provides a method for detecting the state of a cup correspondingly according to different information of the cup in different states. Such as detecting the temperature of different positions of the cup; judging whether the cup contains water or not by comparing the temperatures of different current positions of the cup with the temperatures of all positions of the cup when no water exists; or fitting the obtained temperature data of the cup heating sheet into a temperature curve, and judging whether water exists in the cup or not according to the temperature change (difference value and change curve) of the water in the cup, wherein the curve of the water in the cup in the temperature rising process is close to the curve of adding water with the temperature of 50 ℃ into an empty cup body with the temperature of 35 ℃, and the curve of the water in the cup in the temperature lowering process is close to the curve of adding water with the temperature of 25 ℃ into the empty cup body with the temperature of 35 ℃. The temperature of the empty cup body is 35 ℃, 50 ℃ water is added, and because the temperature of the added water is higher than that of the cup body, the temperature detected by the heating sheet should be quickly increased, then the temperature does not increase to a certain degree along with uniform heat dispersion, and the curve becomes gentle; when water with the temperature of 25 ℃ is added, because the temperature of the cup body is higher than that of the added water, the temperature detected by the heating sheet is quickly reduced, then the temperature is reduced to a certain degree and is not reduced, and the temperature curve becomes gentle; when the temperature curve synthesized by the temperature of the cup heating sheet approaches one of the two temperature curves, the cup heating sheet can be judged to have water.
When water is in the cup, the temperature rise detection is carried out, the temperature of the heating sheet can be quickly transferred to the water in the cup, the temperature rise is slow, and the corresponding slope is small; when the temperature reduction detection is carried out, the heat exchange speed of the water in the cup and the air is relatively slow, the temperature reduction of the heating sheet is relatively slow, and the corresponding slope is relatively small. When no water exists in the cup, the temperature rise detection is carried out, the temperature of the heating sheet rises faster, and the corresponding slope is larger; the temperature of the heating piece is higher than that of the air, the heat of the heating piece is rapidly transmitted to the air, the temperature of the heating piece is reduced rapidly, and the corresponding temperature drop is large. Heating temperature rise slope detection or natural cooling detection is carried out, and whether water exists or not is judged according to whether the slope value of the heating sheet is in a preset temperature slope range or not in the heating temperature rise and natural cooling slope detection process; from these temperature change characteristics, it can be judged whether water is present in the cup. When no water is detected, the heat preservation heating of the cup can be stopped, the bottom of the cup caused by continuous heat preservation heating is prevented from being burnt out due to high temperature, and meanwhile, unnecessary electric energy loss caused by continuous heat preservation after the water in the cup is evaporated is avoided. Is convenient and practical.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A method for detecting absence of water in a cup, comprising:
the method comprises the steps of collecting and recording the temperature of a heating sheet (11) arranged at the bottom of a cup (1), the temperature of a low water level (12) close to the bottom of the cup (1) and the temperature of a high water level (13) above the low water level (12) at regular intervals, caching, comparing the current temperatures of the heating sheet (11), the high water level (13) and the low water level (12) with a preset temperature value I, and judging whether the current temperature of any one of the heating sheet (11), the high water level (13) and the low water level (12) is higher than the preset temperature value I; if the judgment result is yes, outputting a waterless result to a display screen (14) positioned on the cup (1), and stopping waterless detection;
if the current temperature of any one of the heating sheet (11), the high water level (13) and the low water level (12) is not higher than a preset first temperature value, subtracting the current temperature of the low water level (12) from the current temperature of the heating sheet (11) to obtain a first temperature difference, comparing the first temperature difference with a first set difference value, and judging whether the first temperature difference is lower than the first set difference value; if the first temperature difference is not lower than the first set difference value, heating the heating sheet (11) and collecting the three temperatures at the fixed time interval continuously when the heating sheet (11) is heated, respectively setting the three temperatures as a first temperature, a second temperature and a third temperature according to the sequence, calculating a first slope value by using the second temperature and the first temperature, calculating a second slope value by using the third temperature and the second temperature, comparing the first slope value and the second slope value with a first preset slope value, and judging whether the first slope value and the second slope value are larger than the first preset slope value; if the judgment result is yes, outputting a precipitate-free and anhydrous result to the display screen (14), and stopping anhydrous detection; if the judgment result is negative, the sediment and water are output to the display screen (14), and the water-free detection is stopped.
2. The method for detecting absence of water in a cup according to claim 1, wherein: the display screen (14) is located on the side wall of the cup (1), the preset first temperature value is 99 ℃, and the fixed time is 0.5 second.
3. The method for detecting absence of water in a cup according to claim 1, wherein: the first set difference value is 15 ℃, and the first preset slope value is 60.
4. The method for detecting absence of water in a cup according to claim 1, wherein: if the first temperature difference is lower than the first set difference value, calculating temperature differences by using the current temperature of the heating sheet (11) and at least two temperatures before and after the current temperature of the heating sheet (11);
subtracting the previous temperature of the current temperature of the heating sheet (11) from the current temperature of the heating sheet (11) to obtain a second temperature difference; subtracting the first two temperatures of the current temperature of the heating sheet (11) from the previous temperature of the current temperature of the heating sheet (11) to obtain a third temperature difference; subtracting the current temperature of the heating sheet (11) from the latter temperature of the current temperature of the heating sheet (11) to obtain a fourth temperature difference; subtracting the current latter temperature of the heating sheet (11) from the latter two temperatures of the current temperature of the heating sheet (11) to obtain a fifth temperature difference;
fitting temperature curves by utilizing at least two temperatures before and after the current temperature of the heating sheet (11) and the current temperature of the heating sheet (11), comparing the absolute values of the second temperature difference and the third temperature difference with a set difference value II, comparing the absolute values of the fourth temperature difference and the fifth temperature difference with a set difference value III, comparing the fitted temperature curves with two preset temperature curves, and judging whether the absolute values of the second temperature difference and the third temperature difference are greater than the set difference value II, whether the absolute values of the fourth temperature difference and the fifth temperature difference are smaller than the set difference value III, and whether the fitted temperature curves approach to any one of the two preset temperature curves;
if the absolute values of the second temperature difference and the third temperature difference are judged to be larger than a set difference value two, the absolute values of the fourth temperature difference and the fifth temperature difference are judged to be smaller than a set difference value three, the fitted temperature curve approaches to one of the two preset temperature curves, a water result is output to the display screen (14), and the anhydrous detection is stopped;
if the absolute values of the second temperature difference and the third temperature difference are judged to be not more than a set difference value two, or the absolute values of the fourth temperature difference and the fifth temperature difference are judged to be not less than a set difference value three, or the fitted temperature curve does not approach to any one of the two preset temperature curves, acquiring the current inclination information of the cup (1) through a three-axis acceleration sensor (15) arranged on the cup (1), wherein the current inclination information of the cup (1) is represented by the current Z-axis coordinate value of the three-axis acceleration sensor (15), and the current inclination information of the cup (1) is preset inclination information three when the cup (1) is normally placed on a table; when the cup (1) is laterally overturned on a table, the current inclination information of the cup (1) is preset inclination information I; when the cup mouth of the cup (1) is inclined downwards, the current inclination information of the cup (1) is preset inclination information IV; comparing the current inclination information of the cup (1) with preset inclination information I, and judging whether the current inclination information of the cup (1) is greater than the preset inclination information I; if the judgment result is yes, outputting a water-free result to the display screen (14) and stopping water-free detection.
5. The method for detecting absence of water in a cup according to claim 4, wherein: the set difference value two is 5 ℃, the set difference value three is 1.5 ℃, and the two preset temperature curves are respectively temperature change curves of the heating sheet (11) measured by adding 50 ℃ water and adding 20 ℃ water into the cup (1) when the temperature of the empty cup body is 35 ℃; the preset first inclination information is that the Z-axis coordinate value of the triaxial acceleration sensor (15) is equal to zero, the preset third inclination information is that the Z-axis coordinate value of the triaxial acceleration sensor (15) is equal to minus two and five zero, and the preset fourth inclination information is that the Z-axis coordinate value of the triaxial acceleration sensor (15) is greater than zero.
6. The method for detecting absence of water in a cup according to claim 4, wherein: if the current inclination information of the cup (1) is judged to be not greater than the preset inclination information I, acquiring the current temperature at the low water level (12) and the current state information of the display screen (14), comparing the current temperature at the low water level (12) with a preset temperature value II, the current inclination information of the cup (1) with a preset inclination information II, and judging whether the current temperature at the low water level (12) is less than the preset temperature value II, the current inclination information of the cup (1) is less than the preset inclination information II, and the display screen (14) is in a bright state currently; if the current temperature at the low water level (12) is smaller than the preset temperature value II, the current inclination information of the cup (1) is smaller than the preset inclination information II, and the display screen (14) is in a bright state currently, performing heating temperature rise or natural cooling slope detection on the heating sheet (11), calculating a third slope value of temperature change of the heating sheet (11) in the heating temperature rise or natural cooling process, and judging whether the third slope value is in a preset slope range; if the judgment result is yes, outputting a waterless result to the display screen (14), and stopping waterless detection; if the judgment result is negative, the judgment result is that water exists in the display screen (14), and the water-free detection is stopped.
7. The method for detecting absence of water in a cup according to claim 6, wherein: the preset temperature value II is 40 ℃, the preset inclination information II is that the Z-axis coordinate value of the three-axis acceleration sensor (15) is minus one and eight zero, the preset inclination range is that the inclination is less than 0 or greater than 40 when no water exists, and the inclination is greater than 40 when water exists.
8. The method for detecting absence of water in a cup according to claim 6, wherein: if the current temperature at the low water level (12) is not less than the preset temperature value II, or the current inclination information of the cup (1) is not less than the preset inclination information II, or the display screen (14) is not in a bright state currently, judging whether the current inclination information of the cup (1) is equal to preset inclination information III or not, and whether the display screen (14) is in a bright state currently;
if the current inclination information of the cup (1) is not equal to the preset inclination information III or the display screen (14) is not in a bright state, the waterless detection is directly finished;
if the current inclination information of the cup (1) is equal to the preset inclination information three and the display screen (14) is in a bright state currently, performing heating temperature rise or natural cooling slope detection on the heating sheet (11), calculating a slope value four of temperature change of the heating sheet (11) in the heating temperature rise or natural cooling process, and judging whether the slope value four is in the preset slope range; if the judgment result is yes, outputting a waterless result to the display screen (14), and stopping waterless detection; if the judgment result is negative, the judgment result is that water exists in the display screen (14), and the water-free detection is stopped.
9. The method for detecting absence of water in a cup according to claim 8, wherein: the preset inclination information III is that the Z-axis coordinate value of the triaxial acceleration sensor (15) is negative two five zero, the preset inclination range is that the inclination is <0 or >40 when no water exists, and the inclination is >40 when water exists.
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| CN201811484314.8A CN109581534B (en) | 2018-12-06 | 2018-12-06 | Water-free detection method for cup |
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| BR0215691A (en) * | 2002-05-07 | 2005-02-01 | Coca Cola Co | Water treatment apparatus and method for sterilizing the same |
| CN2574557Y (en) * | 2002-10-14 | 2003-09-24 | 汕头市夏野电器有限公司 | Handy dinner machine |
| GB2402322B (en) * | 2003-05-09 | 2006-09-27 | Cannon Rubber Ltd | Babycare heating apparatus |
| CN105371479B (en) * | 2014-08-13 | 2018-04-20 | 顺德职业技术学院 | A kind of level gauge of liquid heater |
| CN204600188U (en) * | 2015-05-11 | 2015-09-02 | 广东美的生活电器制造有限公司 | Heat generating component and electric cup |
| CN108414511B (en) * | 2018-03-01 | 2020-06-02 | 南阳医学高等专科学校第一附属医院 | Tumor urine detection device and method |
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