CN112344409A - Intelligent range hood - Google Patents
Intelligent range hood Download PDFInfo
- Publication number
- CN112344409A CN112344409A CN202011182368.6A CN202011182368A CN112344409A CN 112344409 A CN112344409 A CN 112344409A CN 202011182368 A CN202011182368 A CN 202011182368A CN 112344409 A CN112344409 A CN 112344409A
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- China
- Prior art keywords
- gesture detection
- lifting mechanism
- user
- height
- detection sensors
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2078—Removing cooking fumes movable
- F24C15/2085—Removing cooking fumes movable adjustable in height
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
Abstract
The invention relates to an intelligent range hood, which comprises a machine body, a fan assembly, a smoke baffle, a control panel and at least two groups of gesture detection sensors, wherein all the gesture detection sensors are electrically connected with the control panel, and the intelligent range hood is characterized in that: the machine body is fixed on the wall surface through a first lifting mechanism, or/and the smoke baffle plate is fixed on the machine body through a second lifting mechanism, the first lifting mechanism or/and the second lifting mechanism is/are also electrically connected with the control panel, the control panel calculates the palm width of a user through detecting signals of the gesture detection sensor, and then obtains the height of the user, so that the first lifting mechanism or/and the second lifting mechanism are/is controlled. Compared with the prior art, the invention has the advantages that: need not adjust the organism height or keep off the cigarette board height with extra hardware such as fingerprint, camera detection, the detection signal who utilizes current gesture detection sensor to satisfy different users' use comfort, degree of automation is high.
Description
Technical Field
The invention relates to an intelligent range hood.
Background
The range hood is a household appliance necessary for people to suck and exhaust oil smoke during daily cooking. In order to avoid that a user directly operates a key or a touch panel on a machine body to prevent the key or the touch panel from being stained with oil stains, or avoid that the key or the touch panel on the machine body is operated when kitchen ware is in hands or the hands are dirty to pollute the key or the touch panel, a range hood with an infrared gesture control function designed by utilizing an infrared transmitting and receiving principle appears on the market at present, and certain functions of the range hood are operated by utilizing gestures, such as waving a hand to stir and fry, waving hands to increase air quantity gears, waving hands to turn on and turn off the machine and the like. For example, in the chinese patent application with application number CN201910860852.0, an infrared assembly composed of an infrared transmitting tube and an infrared receiving tube is disposed on the range hood, and the gesture of the user is recognized by a gesture recognition control method, so as to control the range hood to start, shut down, and control the air volume. However, after the range hood is installed, the height of the range hood is fixed and cannot be adjusted, multiple people possibly participate in cooking activities at different times in a family, and the heights of different family members often have great differences, so that users with different heights can have the conditions that a smoke baffle blocks the sight or the height of a switch is too high, the operation is inconvenient, and the like, the height of the user cannot be adjusted according to the height of the specific user, the intelligent degree is low, and the range hood still needs to be further improved.
Disclosure of Invention
The invention aims to solve the technical problem of providing an intelligent range hood which can control the height of a body or/and the height of a smoke baffle plate of the range hood by utilizing the existing gesture detection sensor in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an intelligent range hood, includes the organism, is equipped with the fan subassembly in the organism, is equipped with on the organism and keeps off the cigarette board and be located the oil smoke entry that keeps off the cigarette board rear, is equipped with the control panel in the organism, is equipped with at least two sets of gesture detection sensors on the organism, and all gesture detection sensors all are connected with the control panel electricity, carry out gesture analysis, its characterized in that by the all detected signal to gesture detection sensor of control panel: the machine body is fixed on the wall surface through a first lifting mechanism, or/and the smoke baffle plate is fixed on the machine body through a second lifting mechanism, the first lifting mechanism or/and the second lifting mechanism are/is also electrically connected with the control panel, the control panel judges the width of a palm of a user according to detection signals of the gesture detection sensors and the distance between the different gesture detection sensors, and then calculates the height of the user according to the relation between the width of the palm and the height of the user, and then controls the first lifting mechanism or/and the second lifting mechanism according to the height of the user, so that the height of the machine body or the height of the smoke baffle plate is adjusted.
As an improvement, the control board controls the first lifting mechanism or/and the second lifting mechanism through the following steps:
step 1, acquiring signals of all gesture detection sensors;
step 5, recording the duration of the signal output detected by the gesture detection sensors in the next group as t 3;
step 6, reading the distance between the current group of gesture detection sensors and the next group of gesture detection sensors, and recording the distance as L; reading a preset user palm width reference value, and recording the user palm width reference value range as S1-S2; reading a preset speed reference value, and recording the range of the preset speed reference value as V1-V2;
step 7, calculating a reference value of the moving speed of the palm of the user, and recording the reference value as Vc, (L-S1)/t 2);
step 8, judging whether Vc is more than or equal to V1 and less than or equal to V2, if yes, entering step 9, if no, judging that the user executes the scrubbing action, and returning to step 2;
step 9, assigning the value with the larger time value in t1 and t3 to tc;
step 10, multiplying the reference value Vc of the user palm moving speed by tc, and recording the product of the two as Sc, wherein Sc is Vc × tc;
step 12, calculating the palm width of the user, and recording the palm width as S, wherein S is (L multiplied by tc)/(t2+ tc);
step 13, judging the relation between the palm width S of the user and S1 and S2:
if S is greater than S2 or S is less than S1, go to step 15;
if S is greater than S1 and less than or equal to S12, calculating the height H of the user by using the following formula: h-a 1 × S + b 1;
if S is greater than S12 and less than or equal to S2, calculating the height H of the user by using the following formula: h-a 2 × S + b 2;
wherein S12 is a preset value greater than S1 and less than S2;
step 14, controlling the first lifting mechanism or/and the second lifting mechanism according to the height H of the user to enable the height of the machine body or/and the height of the smoke baffle plate to be matched with the height of the user;
and 15, finishing the adjustment of the first lifting mechanism or/and the second lifting mechanism.
The value range of S1 is 45mm to 80mm, and the value range of S2 is 70mm to 130 mm; the value range of V1 is 400mm/s to 550mm/s, and the value range of V1 is 500mm/s to 750 mm/s; the value of S12 ranges from 75mm to 85 mm.
When S12 equals 80mm, a1 equals 1.91, b1 equals 147.92; a2 ═ 5.02, b2 ═ 128.56.
And the matching information table of the height of the machine body or/and the height of the smoke baffle plate is preset in the control panel under the condition of different user heights.
And the gesture detection sensor is an infrared gesture sensing device, and each group of infrared gesture sensing devices comprises an infrared receiving device and at least one infrared transmitting device.
And the front side of the machine body is provided with a panel, the gesture detection sensors are arranged on the panel, and the distance between the leftmost gesture detection sensor and the rightmost gesture detection sensor is more than or equal to 20 cm.
And improving the range hood, wherein after the range hood is started, the control panel firstly executes the steps 1 to 15 to perform starting adjustment, controls the first lifting mechanism or/and the second lifting mechanism, and enters other control programs after the control panel finishes the starting adjustment.
Compared with the prior art, the invention has the advantages that: need not utilize extra hardware such as fingerprint, camera detection, utilize the detected signal of current gesture detection sensor to and the difference utilizes the distance between the gesture detection sensor, judges the width of user's palm, and then according to the relation of palm width and height, calculates user's height, and adjustment organism height or keep off the cigarette board height, in order to satisfy different users ' comfort in use, degree of automation is high.
Drawings
Fig. 1 is a schematic diagram of an intelligent range hood in an embodiment of the invention.
Fig. 2 is a sectional view of the intelligent range hood in the embodiment of the invention.
Fig. 3 is a flowchart illustrating a control of the first lifting mechanism or/and the second lifting mechanism by the control board according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The intelligent range hood as shown in fig. 1 and 2 comprises a body 1, a fan assembly 2 is arranged in the body, a smoke blocking plate 3 and an oil smoke inlet located behind the smoke blocking plate are arranged on the body, a control panel 4 is arranged in the body, a panel 11 is arranged on the front side of the body 1, two groups of gesture detection sensors 5A and 5B are arranged on the panel 11, the two groups of gesture detection sensors are electrically connected with the control panel 4, all detection signals of the gesture detection sensors are subjected to gesture analysis by the control panel 4, the rear side of the body 1 is fixed on the wall surface through a first lifting mechanism, and the first lifting mechanism 6 is also electrically connected with the control panel 4. The first lifting mechanism adopts a conventional electric lifting mechanism, such as an electric push rod fixed on a wall surface, and a movable plate fixed with the machine body 1 and capable of moving up and down under the action of the electric push rod; or the device can comprise a motor, a gear connected with the output shaft of the motor, a rack engaged with the gear and fixed with the machine body 1, and the like.
After the range hood is started, the control panel firstly executes the following steps 1 to 15 to start and adjust, and in the process of starting and adjusting, the control panel controls the first lifting mechanism so as to adjust the height of the machine body, and after the control panel finishes starting and adjusting, the control panel enters other control programs:
step 1, acquiring signals of two groups of gesture detection sensors;
step 5, recording the duration of the signal output detected by the gesture detection sensors in the next group as t 3;
step 6, reading the distance between the current group of gesture detection sensors and the next group of gesture detection sensors, and recording the distance as L; reading a preset user palm width reference value, and recording the user palm width reference value range as S1-S2; reading a preset speed reference value, and recording the range of the preset speed reference value as V1-V2;
step 7, calculating a reference value of the moving speed of the palm of the user, and recording the reference value as Vc, (L-S1)/t 2);
step 8, judging whether Vc is more than or equal to V1 and less than or equal to V2, if yes, entering step 9, if no, judging that the user executes the scrubbing action, and returning to step 2;
step 9, assigning the value with the larger time value in t1 and t3 to tc;
step 10, multiplying the reference value Vc of the user palm moving speed by tc, and recording the product of the two as Sc, wherein Sc is Vc × tc;
step 12, calculating the palm width of the user, and recording the palm width as S, wherein S is (L multiplied by tc)/(t2+ tc);
step 13, judging the relation between the palm width S of the user and S1 and S2:
if S is greater than S2 or S is less than S1, go to step 15;
if S is greater than S1 and less than or equal to S12, calculating the height H of the user by using the following formula: h-a 1 × S + b 1;
if S is greater than S12 and less than or equal to S2, calculating the height H of the user by using the following formula: h-a 2 × S + b 2;
wherein S12 is a preset value greater than S1 and less than S2;
step 14, controlling the first lifting mechanism according to the height H of the user to enable the height of the machine body or/and the height of the smoke baffle plate to be matched with the height of the user; in the step, under the condition that different user heights are preset in the control panel, the height of the machine body is matched with an information table, the control panel looks up the table according to the user height H to obtain a matching value of the height of the machine body under the condition of the user height H, and then the first lifting mechanism is controlled to enable the height of the machine body to reach the matching value;
and 15, finishing the adjustment of the first lifting mechanism.
In this embodiment, the two groups of gesture detection sensors 5A and 5B are both infrared gesture sensing devices, and each group of infrared gesture sensing device includes an infrared receiving device and at least one infrared emitting device; the distance between the two sets of gesture detection sensors 5A, 5B is equal to or greater than 20 cm.
The value range of S1 is 45mm to 80mm, and S1 is preferably 60 mm; the value range of S2 is 70mm to 130mm, and S2 is preferably 90 mm; v1 is 400mm/s to 550mm/s, preferably 480 mm/s; v1 is 500mm/s to 750mm/s, preferably 600 mm/s; the value of S12 ranges from 75mm to 85 mm. When S12 equals 80mm, a1 equals 1.91, b1 equals 147.92; a2 ═ 5.02, b2 ═ 128.56.
Example two
Different from the first embodiment, the smoke baffle is fixed on the machine body through a second lifting mechanism, and the second lifting mechanism also adopts a conventional electric lifting mechanism; the second lifting mechanism is also electrically connected to the control board, and the control board controls the second lifting mechanism in the same manner as in steps 1 to 15 in the first embodiment.
Claims (8)
1. The utility model provides an intelligent range hood, includes the organism, is equipped with the fan subassembly in the organism, is equipped with on the organism and keeps off the cigarette board and be located the oil smoke entry that keeps off the cigarette board rear, is equipped with the control panel in the organism, is equipped with at least two sets of gesture detection sensors on the organism, and all gesture detection sensors all are connected with the control panel electricity, carry out gesture analysis, its characterized in that by the all detected signal to gesture detection sensor of control panel: the machine body is fixed on the wall surface through a first lifting mechanism, or/and the smoke baffle plate is fixed on the machine body through a second lifting mechanism, the first lifting mechanism or/and the second lifting mechanism are/is also electrically connected with the control panel, the control panel judges the width of a palm of a user according to detection signals of the gesture detection sensors and the distance between the different gesture detection sensors, and then calculates the height of the user according to the relation between the width of the palm and the height of the user, and then controls the first lifting mechanism or/and the second lifting mechanism according to the height of the user, so that the height of the machine body or the height of the smoke baffle plate is adjusted.
2. The intelligent range hood of claim 1, wherein: the control board controls the first lifting mechanism or/and the second lifting mechanism through the following steps:
step 1, acquiring signals of all gesture detection sensors;
step 2, judging whether any group of gesture detection sensors have signals to output, if so, entering step 3, and if not, returning to the step 1;
step 3, recording the group of gesture detection sensors with signals output currently as a current group of gesture detection sensors, and recording the duration of the signals output by the current group of gesture detection sensors as t 1;
step 4, recording a time interval from the termination of signal output of the current group of gesture detection sensors to the detection of signal output of the other group of gesture detection sensors, recording the time interval as t2, and recording the detection of signal output of the other group of gesture detection sensors as the next group of gesture detection sensors;
step 5, recording the duration of the signal output detected by the gesture detection sensors in the next group as t 3;
step 6, reading the distance between the current group of gesture detection sensors and the next group of gesture detection sensors, and recording the distance as L; reading a preset user palm width reference value, and recording the user palm width reference value range as S1-S2; reading a preset speed reference value, and recording the range of the preset speed reference value as V1-V2;
step 7, calculating a reference value of the moving speed of the palm of the user, and recording the reference value as Vc, (L-S1)/t 2);
step 8, judging whether Vc is more than or equal to V1 and less than or equal to V2, if yes, entering step 9, if no, judging that the user executes the scrubbing action, and returning to step 2;
step 9, assigning the value with the larger time value in t1 and t3 to tc;
step 10, multiplying the reference value Vc of the user palm moving speed by tc, and recording the product of the two as Sc, wherein Sc is Vc × tc;
step 11, judging whether Sc is greater than or equal to S1, if yes, going to step 12, and if no, going to step 15;
step 12, calculating the palm width of the user, and recording the palm width as S, wherein S is (L multiplied by tc)/(t2+ tc);
step 13, judging the relation between the palm width S of the user and S1 and S2:
if S is greater than S2 or S is less than S1, go to step 15;
if S is greater than S1 and less than or equal to S12, calculating the height H of the user by using the following formula: h-a 1 × S + b 1;
if S is greater than S12 and less than or equal to S2, calculating the height H of the user by using the following formula: h-a 2 × S + b 2;
wherein S12 is a preset value greater than S1 and less than S2;
step 14, controlling the first lifting mechanism or/and the second lifting mechanism according to the height H of the user to enable the height of the machine body or/and the height of the smoke baffle plate to be matched with the height of the user;
and 15, finishing the adjustment of the first lifting mechanism or/and the second lifting mechanism.
3. The intelligent range hood of claim 3, wherein: the value range of S1 is 45mm to 80mm, and the value range of S2 is 70mm to 130 mm; the value range of V1 is 400mm/s to 550mm/s, and the value range of V1 is 500mm/s to 750 mm/s; the value of S12 ranges from 75mm to 85 mm.
4. The intelligent range hood of claim 3, wherein: when S12 equals 80mm, a1 equals 1.91, b1 equals 147.92; a2 ═ 5.02, b2 ═ 128.56.
5. The intelligent range hood of claim 2, wherein: the control panel is internally preset with a pairing information table of the height of the machine body or/and the height of the smoke baffle plate under the condition of different user heights.
6. The intelligent range hood of claim 2, wherein: the gesture detection sensor is an infrared gesture sensing device, and each infrared gesture sensing device comprises an infrared receiving device and at least one infrared transmitting device.
7. The intelligent range hood of claim 2, wherein: the organism front side is equipped with the panel, gesture detection sensor sets up on the panel, and the distance between leftmost gesture detection sensor and the rightmost gesture detection sensor is more than or equal to 20 cm.
8. The intelligent range hood according to any one of claims 2 to 7, wherein: after the range hood is started, the control panel firstly executes the steps 1 to 15 to perform starting adjustment, controls the first lifting mechanism or/and the second lifting mechanism, and then enters other control programs after the control panel finishes the starting adjustment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011182368.6A CN112344409B (en) | 2020-10-29 | 2020-10-29 | Intelligent range hood |
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| CN202011182368.6A CN112344409B (en) | 2020-10-29 | 2020-10-29 | Intelligent range hood |
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| CN112344409B CN112344409B (en) | 2022-02-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114636179A (en) * | 2022-03-21 | 2022-06-17 | 宁波方太厨具有限公司 | Range hood and control method thereof |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020090146A1 (en) * | 2001-01-09 | 2002-07-11 | Siemens Aktiengesellschaft | Hand recognition with position determination |
| US8339359B2 (en) * | 2009-12-10 | 2012-12-25 | Tatung Company | Method and system for operating electric apparatus |
| CN203250294U (en) * | 2013-04-19 | 2013-10-23 | 南靖万利达科技有限公司 | Non-contact type tablet computer |
| CN103733614A (en) * | 2011-06-29 | 2014-04-16 | 亚马逊技术公司 | User identification by gesture recognition |
| DE102014000573A1 (en) * | 2013-12-19 | 2015-06-25 | Diehl Ako Stiftung & Co. Kg | Operating device for an electronic device |
| CN106485779A (en) * | 2016-03-22 | 2017-03-08 | 智合新天（北京）传媒广告股份有限公司 | A kind of 3D virtual interacting display platform and the method for showing 3D animation |
| CN206846848U (en) * | 2017-05-12 | 2018-01-05 | 宁波方太厨具有限公司 | A kind of intelligent range hood |
| CN107965824A (en) * | 2017-05-12 | 2018-04-27 | 宁波方太厨具有限公司 | A kind of intelligent range hood and its operation control method |
| CN110736117A (en) * | 2019-09-11 | 2020-01-31 | 华帝股份有限公司 | Gesture recognition control method of range hoods |
| AU2018357671A1 (en) * | 2017-10-25 | 2020-05-07 | Ningbo Fotile Kitchen Ware Co., Ltd. | Contactless control device for a range hood and control method thereof |
| CN111368711A (en) * | 2020-02-28 | 2020-07-03 | 深圳市元征科技股份有限公司 | Method and device for adjusting lifting of display screen |
-
2020
- 2020-10-29 CN CN202011182368.6A patent/CN112344409B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020090146A1 (en) * | 2001-01-09 | 2002-07-11 | Siemens Aktiengesellschaft | Hand recognition with position determination |
| US8339359B2 (en) * | 2009-12-10 | 2012-12-25 | Tatung Company | Method and system for operating electric apparatus |
| CN103733614A (en) * | 2011-06-29 | 2014-04-16 | 亚马逊技术公司 | User identification by gesture recognition |
| CN203250294U (en) * | 2013-04-19 | 2013-10-23 | 南靖万利达科技有限公司 | Non-contact type tablet computer |
| DE102014000573A1 (en) * | 2013-12-19 | 2015-06-25 | Diehl Ako Stiftung & Co. Kg | Operating device for an electronic device |
| CN106485779A (en) * | 2016-03-22 | 2017-03-08 | 智合新天（北京）传媒广告股份有限公司 | A kind of 3D virtual interacting display platform and the method for showing 3D animation |
| CN206846848U (en) * | 2017-05-12 | 2018-01-05 | 宁波方太厨具有限公司 | A kind of intelligent range hood |
| CN107965824A (en) * | 2017-05-12 | 2018-04-27 | 宁波方太厨具有限公司 | A kind of intelligent range hood and its operation control method |
| AU2018357671A1 (en) * | 2017-10-25 | 2020-05-07 | Ningbo Fotile Kitchen Ware Co., Ltd. | Contactless control device for a range hood and control method thereof |
| CN110736117A (en) * | 2019-09-11 | 2020-01-31 | 华帝股份有限公司 | Gesture recognition control method of range hoods |
| CN111368711A (en) * | 2020-02-28 | 2020-07-03 | 深圳市元征科技股份有限公司 | Method and device for adjusting lifting of display screen |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114636179A (en) * | 2022-03-21 | 2022-06-17 | 宁波方太厨具有限公司 | Range hood and control method thereof |
| CN114636179B (en) * | 2022-03-21 | 2024-03-01 | 宁波方太厨具有限公司 | Fume exhaust fan and control method thereof |
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