CN113432161A - Non-contact control device of range hood - Google Patents
Non-contact control device of range hood Download PDFInfo
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- CN113432161A CN113432161A CN202010205428.5A CN202010205428A CN113432161A CN 113432161 A CN113432161 A CN 113432161A CN 202010205428 A CN202010205428 A CN 202010205428A CN 113432161 A CN113432161 A CN 113432161A
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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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/017—Gesture based interaction, e.g. based on a set of recognized hand gestures
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Abstract
The invention relates to a non-contact control device of a range hood, which comprises two groups of infrared gesture sensing devices arranged on a shell of the range hood and a detection signal analysis device electrically connected with the two groups of infrared gesture sensing devices, wherein an infrared receiving device and an infrared transmitting device in each group of infrared gesture sensing devices are both connected with the detection signal analysis device, and the non-contact control device is characterized in that: the range hood is characterized in that an additional sensing device is further arranged on the shell of the range hood and is also electrically connected with the detection signal analysis device, a scrubbing action recognition module is arranged in the detection signal analysis device and can be used for judging whether a user is scrubbing or not by combining detection signals output by the additional sensing device and detection signals output by the two groups of infrared gesture sensing devices, and if the user is scrubbing, the recognized gesture control signals are subjected to invalid processing. The invention can effectively prevent the interference of the scrubbing action on the gesture control.
Description
Technical Field
The invention relates to a non-contact control device of a range hood.
Background
At present, most range hoods in the market are operated by contact, but because of the special environment of kitchen work, when a user is stained with oil stains or flour on hand, or the clean hand is not willing to operate the keys covering the oil stains, the contact operation brings much annoyance to the user of the kitchen appliance.
Therefore, some range hoods utilizing infrared signals to perform non-contact control have appeared in the prior art, and such range hoods basically control the sensing distance by controlling the intensity of the infrared signals and simultaneously control the sliding speed of gestures to avoid human interference, especially head interference. In addition, the gesture of left and right waving is simply judged according to the time sequence of signals received by different infrared receiving devices.
In the range hood which utilizes infrared signals to carry out non-contact control, in order to avoid the interference of human bodies to the infrared signals, the Chinese patent application with the application number of 201711005651.X can filter some human body interference by designing the position of the sensing device. However, when scrubbing the panel near the induction system, because scrubbing the action very similar with gesture action (control signal), be difficult to distinguish and carry out the filtering, also rarely have the design of this aspect at present, the lock screen function of panel is increased to most solutions, and the user need get into the lock screen state when scrubbing the panel, cleans and needs the unblock after accomplishing, if the user forgets the lock screen, then can bring inconvenience and puzzlement for user's use.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a non-contact control device of a range hood, which can effectively prevent the interference of scrubbing action, aiming at the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a non-contact control device of range hood, is including setting up two sets of infrared gesture induction system on the range hood shell, and the detected signal analytical equipment who is connected with two sets of infrared gesture induction system electricity, and every infrared gesture induction system of group is including infrared receiving device and infrared transmitting device, and infrared receiving device and infrared transmitting device in every infrared gesture induction system of group all are connected its characterized in that with detected signal analytical equipment: the range hood is characterized in that an additional sensing device is further arranged on the shell of the range hood and is also electrically connected with the detection signal analysis device, a scrubbing action recognition module is arranged in the detection signal analysis device and can be used for judging whether a user is scrubbing or not by combining detection signals output by the additional sensing device and detection signals output by the two groups of infrared gesture sensing devices, and if the user is scrubbing, the recognized gesture control signals are subjected to invalid processing.
As an improvement, the additional sensing device is a capacitance sensing device or a pressure sensing device or a vibration sensing device.
And the additional sensing device is arranged beside any group of infrared gesture sensing devices.
Preferably, the additional sensing device is located in the middle of the two groups of infrared gesture sensing devices.
And the distance L between the infrared receiving devices in the two groups of infrared gesture sensing devices meets the following requirements: h tan (θ) + H tan (β) + W _ min < L < H tan (θ) + H tan (β) + W _ max; wherein, W _ min is the minimum value of the width of the human hand, W _ min is a preset constant larger than 50mm, W _ max is the maximum value of the width of the human hand, and W _ max is a preset constant smaller than 200 mm; theta is the maximum infrared signal emission angle of the group a infrared gesture sensing devices in the direction close to the group b infrared gesture sensing devices, beta is the maximum infrared signal receiving angle of the group b infrared gesture sensing devices in the direction close to the group a infrared gesture sensing devices, and H is the preset maximum corresponding distance.
And then, the detection signal analysis device judges whether a gesture control signal is output according to the detection signals output by the two groups of infrared gesture sensing devices, and if the gesture control signal is output, the scrubbing motion recognition module is immediately started.
In a further improvement, the scrub action recognition module recognizes whether the user is performing a scrub action by:
step one, judging whether the additional sensing device detects a signal, if the additional sensing device detects the signal, outputting a first probability k1 of a scrubbing action to be equal to 100%, and if the additional sensing device does not detect the signal, outputting a first probability k1 of the scrubbing action to be equal to 0;
recording the maximum numerical value output by the infrared receiving device in any group of infrared gesture sensing devices as Sm, recording the numerical value output by the infrared receiving device in the group of infrared gesture sensing devices when a hand is 10-20 mm away from the group of infrared gesture sensing devices as ST1, recording the numerical value output by the infrared receiving device in the group of infrared gesture sensing devices when the hand is 0-2 mm away from the group of infrared gesture sensing devices as ST2, judging the sizes of Sm and ST1 and ST2, and if Sm is less than or equal to ST1, outputting a second probability k2 of scrubbing action to be equal to 0; if Sm is greater than ST1 and the difference between Sm and ST1 is greater, the second probability of outputting a scrub action, k2, is greater and if Sm is equal to ST2, the second probability of outputting a scrub action, k2, is equal to 100%; if Sm is greater than ST2, the second probability of outputting a scrub action, k2, is also equal to 100%; 2:
setting a first preset fixed time which is recorded as T1, wherein the time is T1<2min when the time is 10 s; setting the maximum allowable times of invalid gesture signals in T1 time, and recording as Nt, wherein 1< Nt < 5; setting the maximum allowable value of the invalid gesture signal ratio in the T1 time, and recording the maximum allowable value as Pt, wherein 0< Pt < 50%; recording the number of occurrences of the invalid gesture signal within the time T1 as n; the invalid gesture signal proportion in the T1 time is recorded as p; if n is less than or equal to Nt, a third probability of outputting a scrub action k3 is equal to 0; if n is larger than Nt, continuing to judge the sizes of p and Pt, and if p is smaller than or equal to Pt, outputting a third probability k3 of the scrubbing action to be equal to 0; if p is greater than Pt, the larger p, the larger the third probability k3 of outputting the scrub motion, and if p is 100%, the third probability k3 of outputting the scrub motion is 100%;
step four, recording the second preset fixed time as T2, wherein the time is T2 and 2min when the time is 10 s; setting the maximum allowable times of the object in-out signals in T2 time, and recording as Mt, wherein 1< Mt < 10; the object in-out signal comprises an effective gesture signal and an ineffective gesture signal; recording the number of times of the object entering and exiting signals in the time T2 as m, and if m is less than or equal to Mt, outputting a fourth probability k4 of a scrubbing action to be equal to 0; if m is greater than Mt, the greater m, the greater the fourth probability of outputting a scrubbing action k4, the maximum value of k4 being equal to 100%;
step five, outputting the total probability k of the scrubbing action to be 1- (1-k1) × (1-k2) × (1-k3) × (1-k 4);
step six, setting a probability allowable threshold Kt of the scrubbing action, wherein the Kt is more than 30% and less than or equal to 100%; and if k is larger than Kt, invalidating the recognized gesture control signal.
And then improving, if k is larger than Kt, after the recognized gesture control signal is subjected to invalidation processing, the invalidation duration is t, 1s < t <2min, and the larger k is, the larger t is; in the invalid duration, the detection signal analysis device only performs gesture signal recognition, and does not use a gesture signal to generate a control instruction.
Then, improving, wherein a corresponding linear relation function between k and t is preset in the detection signal analysis device; a corresponding linear relation function between the difference value of Sm and ST1 and k2 is preset in the scrubbing action identification module; the scrubbing action recognition module is preset with a corresponding linear relation function between p and k 3.
Compared with the prior art, the invention has the advantages that: through setting up additional induction system, be equipped with in the detected signal analytical equipment and clean action recognition module, clean action recognition module and can combine the detected signal of additional induction system output and the detected signal of two sets of infrared gesture induction system output, judge whether the user is cleaning the action, if the user is cleaning the action, do invalid treatment with the gesture control signal who recognizes, can effectively prevent to clean the interference of action to gesture control.
Drawings
Fig. 1 is a schematic structural diagram of a non-contact control device of a range hood in an embodiment of the invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The non-contact control device of the range hood as shown in fig. 1 comprises two groups of infrared gesture sensing devices 2 and 3 arranged on a range hood housing 1, and a detection signal analysis device 4 electrically connected with the two groups of infrared gesture sensing devices, wherein each group of infrared gesture sensing devices comprises an infrared receiving device a and an infrared emitting device b, the infrared receiving device a and the infrared emitting device b in each group of infrared gesture sensing devices are both connected with a detection signal analysis device (not shown in the figure), an additional sensing device 4 is further arranged on the range hood housing 1, the additional sensing device 4 is also electrically connected with the detection signal analysis device, a scrubbing action recognition module is arranged in the detection signal analysis device, and can combine a detection signal output by the additional sensing device and detection signals output by the two groups of infrared gesture sensing devices to judge whether a user is scrubbing action, and if the user is performing the scrubbing action, invalidating the recognized gesture control signal.
Wherein the additional sensing device 4 is a capacitive sensing device or a pressure sensing device or a vibration sensing device. Preferably, the additional sensing device is arranged in an area where the effective gesture motion must pass through, and in this embodiment, the additional sensing device is arranged in the middle of the two sets of infrared gesture sensing devices.
The specific structure of the two groups of infrared gesture sensing devices is the same as that disclosed in the Chinese patent application with the application number of 201711005651.X, namely, the distance L between the infrared receiving devices in the two groups of infrared gesture sensing devices meets the following requirements: h tan (θ) + H tan (β) + W _ min < L < H tan (θ) + H tan (β) + W _ max; wherein, W _ min is the minimum value of the width of the human hand, W _ min is a preset constant larger than 50mm, W _ max is the maximum value of the width of the human hand, and W _ max is a preset constant smaller than 200 mm; theta is the maximum infrared signal emission angle of the group a infrared gesture sensing devices in the direction close to the group b infrared gesture sensing devices, beta is the maximum infrared signal receiving angle of the group b infrared gesture sensing devices in the direction close to the group a infrared gesture sensing devices, and H is the preset maximum corresponding distance. The control method of the detection signal analyzing apparatus is also the same as that disclosed in the chinese patent application 201711005651. X.
In this embodiment, the detection signal analysis device determines whether a gesture control signal is output according to the detection signals output by the two sets of infrared gesture sensing devices, and immediately starts the scrubbing motion recognition module if the gesture control signal is output. The scrubbing action recognition module recognizes whether a user is performing a scrubbing action by:
step one, judging whether the additional sensing device detects a signal, if the additional sensing device detects the signal, outputting a first probability k1 of a scrubbing action to be equal to 100%, and if the additional sensing device does not detect the signal, outputting a first probability k1 of the scrubbing action to be equal to 0;
recording the maximum numerical value output by the infrared receiving device in any group of infrared gesture sensing devices as Sm, recording the numerical value output by the infrared receiving device in the group of infrared gesture sensing devices when a hand is 10-20 mm away from the group of infrared gesture sensing devices as ST1, recording the numerical value output by the infrared receiving device in the group of infrared gesture sensing devices when the hand is 0-2 mm away from the group of infrared gesture sensing devices as ST2, judging the sizes of Sm and ST1 and ST2, and if Sm is less than or equal to ST1, outputting a second probability k2 of scrubbing action to be equal to 0; if Sm is greater than ST1 and the difference between Sm and ST1 is greater, the second probability of outputting a scrub action, k2, is greater and if Sm is equal to ST2, the second probability of outputting a scrub action, k2, is equal to 100%; if Sm is greater than ST2, the second probability of outputting a scrub action, k2, is also equal to 100%; 2: a corresponding linear relation function between the difference value of Sm and ST1 and k2 is preset in the scrubbing action identification module;
setting a first preset fixed time which is recorded as T1, wherein the time is T1<2min when the time is 10 s; setting the maximum allowable times of invalid gesture signals in T1 time, and recording as Nt, wherein 1< Nt < 5; setting the maximum allowable value of the invalid gesture signal ratio in the T1 time, and recording the maximum allowable value as Pt, wherein 0< Pt < 50%; recording the number of occurrences of the invalid gesture signal within the time T1 as n; the invalid gesture signal proportion in the T1 time is recorded as p; if n is less than or equal to Nt, a third probability of outputting a scrub action k3 is equal to 0; if n is larger than Nt, continuing to judge the sizes of p and Pt, and if p is smaller than or equal to Pt, outputting a third probability k3 of the scrubbing action to be equal to 0; if p is greater than Pt, the larger p, the larger the third probability k3 of outputting the scrub motion, and if p is 100%, the third probability k3 of outputting the scrub motion is 100%; the scrubbing action identification module is internally provided with a corresponding linear relation function between p and k3 in advance;
step four, recording the second preset fixed time as T2, wherein the time is T2 and 2min when the time is 10 s; setting the maximum allowable times of the object in-out signals in T2 time, and recording as Mt, wherein 1< Mt < 10; the object in-out signal comprises an effective gesture signal and an ineffective gesture signal; recording the number of times of the object entering and exiting signals in the time T2 as m, and if m is less than or equal to Mt, outputting a fourth probability k4 of a scrubbing action to be equal to 0; if m is greater than Mt, the greater m, the greater the fourth probability of outputting a scrubbing action k4, the maximum value of k4 being equal to 100%;
step five, outputting the total probability k of the scrubbing action to be 1- (1-k1) × (1-k2) × (1-k3) × (1-k 4);
step six, setting a probability allowable threshold Kt of the scrubbing action, wherein the Kt is more than 30% and less than or equal to 100%; if k is larger than Kt, the recognized gesture control signal is subjected to invalidation treatment, the invalidation duration is t, 1s < t <2min, and the larger k is, the larger t is; in the invalid duration, the detection signal analysis device only performs gesture signal identification and does not use a gesture signal to generate a control instruction; the corresponding linear relation function between k and t is preset in the detection signal analysis device.
Claims (9)
1. The utility model provides a non-contact control device of range hood, is including setting up two sets of infrared gesture induction system on the range hood shell, and the detected signal analytical equipment who is connected with two sets of infrared gesture induction system electricity, and every infrared gesture induction system of group is including infrared receiving device and infrared transmitting device, and infrared receiving device and infrared transmitting device in every infrared gesture induction system of group all are connected its characterized in that with detected signal analytical equipment: the range hood is characterized in that an additional sensing device is further arranged on the shell of the range hood and is also electrically connected with the detection signal analysis device, a scrubbing action recognition module is arranged in the detection signal analysis device and can be used for judging whether a user is scrubbing or not by combining detection signals output by the additional sensing device and detection signals output by the two groups of infrared gesture sensing devices, and if the user is scrubbing, the recognized gesture control signals are subjected to invalid processing.
2. The non-contact control device of the range hood according to claim 1, characterized in that: the additional sensing device is a capacitance sensing device or a pressure sensing device or a vibration sensing device.
3. The non-contact control device of the range hood according to claim 2, characterized in that: the additional sensing device is arranged beside any group of infrared gesture sensing devices.
4. The non-contact control device of the range hood according to claim 3, characterized in that: the additional sensing device is positioned in the middle of the two groups of infrared gesture sensing devices.
5. The non-contact control device of the range hood according to claim 1, 2, 3 or 4, characterized in that: the distance L between the infrared receiving devices in the two groups of infrared gesture sensing devices meets the following requirements: h tan (θ) + H tan (β) + W _ min < L < H tan (θ) + H tan (β) + W _ max; wherein, W _ min is the minimum value of the width of the human hand, W _ min is a preset constant larger than 50mm, W _ max is the maximum value of the width of the human hand, and W _ max is a preset constant smaller than 200 mm; theta is the maximum infrared signal emission angle of the group a infrared gesture sensing devices in the direction close to the group b infrared gesture sensing devices, beta is the maximum infrared signal receiving angle of the group b infrared gesture sensing devices in the direction close to the group a infrared gesture sensing devices, and H is the preset maximum corresponding distance.
6. The non-contact control device of the range hood according to claim 1, characterized in that: the detection signal analysis device judges whether a gesture control signal is output according to the detection signals output by the two groups of infrared gesture sensing devices, and if the gesture control signal is output, the scrubbing action recognition module is immediately started.
7. The non-contact control device of the range hood according to claim 1, characterized in that: the scrubbing action recognition module recognizes whether a user is performing a scrubbing action by:
step one, judging whether the additional sensing device detects a signal, if the additional sensing device detects the signal, outputting a first probability k1 of a scrubbing action to be equal to 100%, and if the additional sensing device does not detect the signal, outputting a first probability k1 of the scrubbing action to be equal to 0;
recording the maximum numerical value output by the infrared receiving device in any group of infrared gesture sensing devices as Sm, recording the numerical value output by the infrared receiving device in the group of infrared gesture sensing devices when a hand is 10-20 mm away from the group of infrared gesture sensing devices as ST1, recording the numerical value output by the infrared receiving device in the group of infrared gesture sensing devices when the hand is 0-2 mm away from the group of infrared gesture sensing devices as ST2, judging the sizes of Sm and ST1 and ST2, and if Sm is less than or equal to ST1, outputting a second probability k2 of scrubbing action to be equal to 0; if Sm is greater than ST1 and the difference between Sm and ST1 is greater, the second probability of outputting a scrub action, k2, is greater and if Sm is equal to ST2, the second probability of outputting a scrub action, k2, is equal to 100%; if Sm is greater than ST2, the second probability of outputting a scrub action, k2, is also equal to 100%; 2:
setting a first preset fixed time which is recorded as T1, wherein the time is T1<2min when the time is 10 s; setting the maximum allowable times of invalid gesture signals in T1 time, and recording as Nt, wherein 1< Nt < 5; setting the maximum allowable value of the invalid gesture signal ratio in the T1 time, and recording the maximum allowable value as Pt, wherein 0< Pt < 50%; recording the number of occurrences of the invalid gesture signal within the time T1 as n; the invalid gesture signal proportion in the T1 time is recorded as p; if n is less than or equal to Nt, a third probability of outputting a scrub action k3 is equal to 0; if n is larger than Nt, continuing to judge the sizes of p and Pt, and if p is smaller than or equal to Pt, outputting a third probability k3 of the scrubbing action to be equal to 0; if p is greater than Pt, the larger p, the larger the third probability k3 of outputting the scrub motion, and if p is 100%, the third probability k3 of outputting the scrub motion is 100%;
step four, recording the second preset fixed time as T2, wherein the time is T2 and 2min when the time is 10 s; setting the maximum allowable times of the object in-out signals in T2 time, and recording as Mt, wherein 1< Mt < 10; the object in-out signal comprises an effective gesture signal and an ineffective gesture signal; recording the number of times of the object entering and exiting signals in the time T2 as m, and if m is less than or equal to Mt, outputting a fourth probability k4 of a scrubbing action to be equal to 0; if m is greater than Mt, the greater m, the greater the fourth probability of outputting a scrubbing action k4, the maximum value of k4 being equal to 100%;
step five, outputting the total probability k of the scrubbing action to be 1- (1-k1) × (1-k2) × (1-k3) × (1-k 4);
step six, setting a probability allowable threshold Kt of the scrubbing action, wherein the Kt is more than 30% and less than or equal to 100%; and if k is larger than Kt, invalidating the recognized gesture control signal.
8. The non-contact control device according to claim 7, characterized in that: if k is larger than Kt, after the recognized gesture control signal is subjected to invalidation processing, the invalidation duration is t, 1s < t <2min, and the larger k is, the larger t is; in the invalid duration, the detection signal analysis device only performs gesture signal recognition, and does not use a gesture signal to generate a control instruction.
9. The non-contact control device according to claim 8, characterized in that: a corresponding linear relation function between k and t is preset in the detection signal analysis device; a corresponding linear relation function between the difference value of Sm and ST1 and k2 is preset in the scrubbing action identification module; the scrubbing action recognition module is preset with a corresponding linear relation function between p and k 3.
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| CN202010205428.5A CN113432161B (en) | 2020-03-23 | 2020-03-23 | Non-contact control device of range hood |
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| DE102009028221A1 (en) * | 2009-08-04 | 2011-02-17 | BSH Bosch und Siemens Hausgeräte GmbH | Extractor hood with control unit |
| CN104566591A (en) * | 2015-01-09 | 2015-04-29 | 广东海信家电有限公司 | Non-contact control method of extractor hood |
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