CN107543227A - Motion track recognition methods and use its range hood - Google Patents
Motion track recognition methods and use its range hood Download PDFInfo
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- CN107543227A CN107543227A CN201710880621.7A CN201710880621A CN107543227A CN 107543227 A CN107543227 A CN 107543227A CN 201710880621 A CN201710880621 A CN 201710880621A CN 107543227 A CN107543227 A CN 107543227A
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Abstract
The present invention relates to a kind of motion track recognition methods and use its range hood.This method comprises the following steps：The first transmitting probe transmitting first detection signal of first distance sensor module；When the first detection signal reflexes to the first receiving transducer of first distance sensor module through baffle element, first distance sensor module produces the first block signal；Second transmitting probe of second distance sensor assembly launches the second detection signal, and first distance sensor module and the second distance sensor assembly are arranged at intervals on cigarette machine body；When second detection signal reflexes to the second receiving transducer of the second distance sensor assembly through baffle element, the second distance sensor assembly produces the second block signal；According to the time sequencing for producing first block signal and second block signal, the motion track of baffle element is obtained.This method can interpolate that out the motion track of obstacle, and have the advantages of cost is low.
Description
Technical field
The present invention relates to kitchen appliance technical field, more particularly to a kind of motion track recognition methods and uses its suction
Lampblack absorber.
Background technology
Traditional lampblack absorber is adjusted by mechanical key or touch key-press.Range hood is in actual use process
In, sometimes operate very inconvenient.For example, in cooking, it is necessary to adjust the firepower of cigarette machine, but now have greasy dirt or hand on hand
On hold other articles in the case of, user be not easy to adjust cigarette machine firepower.And traditional movement locus recognition methods is
Realized using the method for image recognition, the picture at different time interval is caught by camera, then pass through the software of complexity
Algorithm analyzes and processes, and finally draws the dynamic rail mark of object.This method cost is higher, and development difficulty is larger, main application
In image analysis software industry, the application and development of household appliances is not suitable for.Therefore, traditional lampblack absorber is known using movement locus
Other method be controlled regulation there is cost it is high the problem of.
The content of the invention
Based on this, it is necessary to for cost it is high the problem of, there is provided a kind of inexpensive motion track recognition methods and use
Its range hood.
A kind of motion track recognition methods, comprises the following steps：
The first transmitting probe transmitting first detection signal of first distance sensor module；
When the first detection signal reflexes to through baffle element the first receiving transducer of first distance sensor module
When, first distance sensor module produces the first block signal；
Second transmitting probe of second distance sensor assembly launches the second detection signal, the first range sensor mould
Block and the second distance sensor assembly are arranged at intervals on cigarette machine body；
When second detection signal reflexes to through baffle element the second receiving transducer of the second distance sensor assembly
When, the second distance sensor assembly produces the second block signal；
According to the time sequencing for producing first block signal and second block signal, the movement of baffle element is obtained
Track.
Motion track recognition methods of the present invention beneficial effect caused by compared with background technology：Using first away from
Include the first transmitting probe and the first receiving transducer from sensor assembly.When baffle element is not in the inspection of the first distance sensor module
When surveying in region, the first detection signal of the first transmitting probe transmitting will not be received by the first receiving transducer.When baffle element exists
When in the detection zone of the first distance sensor module, the first detection signal of the first transmitting probe transmitting is blocked thing and reflected into
Enter in the first receiving transducer.In this way, the first distance sensor module can interpolate that whether obstacle is located at the first range sensor
In the detection zone of module.Similarly, second distance sensor assembly can interpolate that whether obstacle is located at second distance sensor
In the detection zone of module.The detection of the first distance sensor module and second distance sensor assembly is appeared in by obstacle
Time sequencing in region, above-mentioned motion track recognition methods can interpolate that out the motion track of obstacle.Adopted compared to traditional
With the method for image recognition motion track, above-mentioned motion track recognition methods need not gather picture, and algorithm is simple and easy, without opening
Complicated software is sent out, there is the advantages of cost is low.
In one of the embodiments, described according to producing first block signal and second block signal
Time sequencing, it is further comprising the steps of after the motion track step for obtaining baffle element：
Control instruction is generated according to the motion track；
The operation of the cigarette machine body is controlled according to the control instruction.
In this way, above-mentioned motion track recognition methods passes through the first distance sensor module and second distance sensor assembly energy
Different motion tracks is enough obtained, and then different control instructions can be generated, realizes the operation of control cigarette machine body.
In one of the embodiments, it is described to be passed when the first detection signal reflexes to first distance through baffle element
During the first receiving transducer of sensor module, the step of first distance sensor module produces the first block signal, includes：When
First receiving transducer persistently receives the first detection signal, first distance sensor module in the first preset time
Produce the first block signal；
It is and/or described when second detection signal reflexes to the of the second distance sensor assembly through baffle element
During two receiving transducers, the step of second distance sensor assembly produces the second block signal, includes：When the second receiving transducer
Second detection signal is persistently received in the second preset time, the second distance sensor assembly, which produces second, to be stopped
Signal.
In above-mentioned motion track recognition methods, the first receiving transducer receives first detection signal, and it is pre- to continue first
If the time one directly receives first detection signal, the first distance sensor module just produces the first block signal, confirms obstacle
In the detection zone of the first distance sensor module, so as to avoid obstacle accidentally by the first distance sensor module
Detection zone, the first distance sensor module mistake is caused to produce the first block signal.Similarly, the second receiving transducer receives
Two detection signals, and continue the second preset time one and directly receive the second detection signal, second distance sensor assembly just produces
Raw second block signal, can avoid second distance sensor assembly mistake from producing the second block signal.In this way, above-mentioned moving rail
The reliability of mark recognition methods is high.
In one of the embodiments, it is described to be passed when the first detection signal reflexes to first distance through baffle element
During the first receiving transducer of sensor module, the step of first distance sensor module produces the first block signal, also includes：
When the first receiving transducer receives the first detection signal and does not reach the first preset time persistently, described first receives spy
It is nose heave newly to detect whether to receive first detection signal；
It is and/or described when second detection signal reflexes to the of the second distance sensor assembly through baffle element
During two receiving transducers, the step of second distance sensor assembly produces the second block signal, also includes：When the second reception is visited
Head receives second detection signal and does not reach the second preset time persistently, and second receiving transducer detects again is
It is no to receive the second detection signal.
In above-mentioned motion track recognition methods, the first receiving transducer does not continue the first preset time and receives first inspection
Signal is surveyed, the first receiving transducer detects whether to receive first detection signal again, can avoid because obstacle accidentally passes through
The detection zone of first distance sensor module, either, avoid because user cancels or Iterim Change motion track institute temporarily
The first block signal mistake is caused to produce.Similarly, the second receiving transducer do not continue the second preset time receive it is described second inspection
Signal is surveyed, the second receiving transducer is detected whether to receive the second detection signal again, and the second block signal mistake can be avoided to produce
It is raw.In this way, the reliability of above-mentioned motion track recognition methods is high.
In one of the embodiments, it is described according to produce first block signal and second block signal when
Between order, include the step of the motion track for obtaining baffle element：
After first block signal produces, second block signal produces, then the motion track of baffle element is edge
Move in first distance sensor module to the direction of the second distance sensor assembly；
After second block signal produces, first block signal produces, then the motion track of baffle element is edge
Move in the second distance sensor assembly to the direction of first distance sensor module.
Above-mentioned motion track recognition methods, the time sequencing occurred according to the first block signal and the second block signal, energy
The motion track for enough judging baffle element is moved along the first distance sensor module to the direction of second distance sensor assembly,
Or moved along second distance sensor assembly to the direction of the first distance sensor module, so as to obtain stop exactly
The motion track of body, and then realize the operation for controlling cigarette machine body exactly.
In one of the embodiments, after first block signal produces, second block signal produces, then hinders
The motion track of block body is what is moved along first distance sensor module to the direction of the second distance sensor assembly
Specific steps include：
After first block signal produces, judge whether the second receiving transducer receives second detection signal；
In this way, then second block signal produces；
Otherwise, in the 3rd preset time, continue to judge whether the second receiving transducer receives second detection signal；
In this way, then second block signal produces；Otherwise, initialize first distance sensor module and the second distance passes
Sensor module.
In above-mentioned motion track recognition methods, after first block signal produces, the second receiving transducer is without immediately
Receive the second detection signal, it may be possible to not yet reach second distance sensor assembly because the speed of obstacle movement is excessively slow
Detection zone in, it may be possible to signal transmission delay, it is also possible to the self delay of software program, therefore, it is default to extend the 3rd
Time is used to continue to detect whether the second receiving transducer receives the second detection signal, avoids prematurely arbitrary decision from drawing the second reception
Probe does not receive the conclusion of the second detection signal.When the second receiving transducer does not receive second in the 3rd preset time really
During detection signal, then invalid detection is now detected as, initializes the first distance sensor module and second distance sensor assembly,
First distance sensor module and second distance sensor assembly can continue to reacquire the motion track of obstacle in time.
In one of the embodiments, it is described according to produce first block signal and second block signal when
Between order, also include the step of the motion track for obtaining baffle element：When first block signal and second block signal
Produce simultaneously, and be continued above the 4th preset time, then judge baffle element for transfixion.In this way, above-mentioned motion track is known
Other method condition with caused by by the first block signal and the second block signal, and extend the 4th preset time, obtain resistance
Block body is actionless state.
In one of the embodiments, it is described to be passed when the first detection signal reflexes to first distance through baffle element
During the first receiving transducer of sensor module, the step of first distance sensor module produces the first block signal, includes：When
When baffle element and the distance of first distance sensor module are 20cm-50cm, the first receiving transducer can be received through resistance
The first detection signal of block body reflection；
It is and/or described when second detection signal reflexes to the of the second distance sensor assembly through baffle element
During two receiving transducers, the step of second distance sensor assembly produces the second block signal, includes：When baffle element with it is described
When the distance of second distance sensor assembly is 20cm-50cm, the second receiving transducer can receive the through baffle element reflection
Two detection signals.
Above-mentioned motion track recognition methods is by identifying the resistance with the distance of the first distance sensor module for 20cm-50cm
Block material and/or the motion track with obstacle that the distance of second distance sensor assembly is 20cm-50cm, can send correct
Control instruction.When obstacle and the first distance sensor module and/or the distance of second distance sensor assembly be excessive or mistake
Hour, obstacle is chaff interference.To avoid the motion track of chaff interference from causing the generation of noise signal, the first range sensor
The detection range of module and/or second distance sensor assembly is defined to 20cm-50cm.
A kind of range hood, including cigarette machine body, the first distance sensor module and second distance sensor assembly, it is described
First distance sensor module and the second distance sensor assembly are arranged at intervals on the cigarette machine body；Described first away from
Include the first transmitting probe and the first receiving transducer from sensor assembly, first transmitting probe is used to launch the first detection letter
Number, first receiving transducer is used to receive the first detection signal reflected through baffle element；First distance sensor module
It is electrically connected with the controller of the cigarette machine body；The second distance sensor assembly connects including the second transmitting probe and second
Probe is received, second transmitting probe is used to launch the second detection signal, and second receiving transducer is used to receive through baffle element
Second detection signal of reflection；The controller of the second distance sensor assembly and the cigarette machine body is electrically connected with.
Range hood of the present invention beneficial effect caused by compared with background technology：Above-mentioned range hood passes through
One distance sensor module and second distance sensor assembly, the motion track of obstacle is obtained, and then generate corresponding control
Instruction, is easy to user to control the operation of cigarette machine body in a non-contact manner by gesture or other objects.Above-mentioned range hood without
Picture need to be gathered, algorithm is simple and easy, without developing complicated software, has the advantages of cost is low.
In one of the embodiments, first distance sensor module and/or the second distance sensor assembly
For infrared-type distance sensor module, ultrasonic type distance sensor module, radar waves distance sensor module or laser
Formula distance sensor module.
Brief description of the drawings
Fig. 1 is the flow chart of motion track recognition methods described in embodiment of the present invention；
Fig. 2 is that motion track is along the first distance sensor module to second distance sensor die in embodiment of the present invention
The decision flow chart of Block direction movement；
Fig. 3 is the schematic diagram of smoke exhaust ventilator described in embodiment of the present invention；
Fig. 4 is the schematic diagram that the first receiving transducer receives first detection signal in embodiment of the present invention；
Fig. 5 is the schematic diagram that the first receiving transducer does not receive first detection signal in embodiment of the present invention.
100th, the first distance sensor module, the 101, first transmitting probe, the 102, first receiving transducer, 200, second distance
Sensor assembly, the 201, second transmitting probe, the 202, second receiving transducer, 300, obstacle, 400, cigarette machine body.
Embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give the better embodiment of the present invention.But the present invention can realize in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose for providing these embodiments is to make to understand more the disclosure
Add thorough and comprehensive.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.On the contrary, when element be referred to as " directly existing " another element " on " when,
In the absence of intermediary element.Term as used herein " vertically ", " horizontal ", "left", "right" and similar statement are
For illustrative purposes.Heretofore described " first ", " second ", " the 3rd ", " the 4th ", " the 5th " do not represent specific quantity
And order, it is only used for the differentiation of title.
As shown in figures 1 and 3, a kind of motion track recognition methods, comprises the following steps：
S100：The first transmitting probe 101 transmitting first detection signal of first distance sensor module 100.
S200：As shown in Figure 3 and Figure 4, when first detection signal reflexes to the first distance sensor module 100 through baffle element
The first receiving transducer 102 when, the first distance sensor module 100 produce the first block signal.
S300：Second transmitting probe 201 of second distance sensor assembly 200 launches the second detection signal.Refer to figure
3, the first distance sensor module 100 and second distance sensor assembly 200 are arranged at intervals on cigarette machine body 400.
S400：When the second detection signal reflexes to through baffle element the second receiving transducer of second distance sensor assembly 200
When 202, second distance sensor assembly 200 produces the second block signal.
S500：According to the time sequencing for producing the first block signal and the second block signal, the moving rail of baffle element is obtained
Mark.
The motion track recognition methods of present invention beneficial effect caused by compared with background technology：Passed using the first distance
Sensor module 100 includes the first transmitting probe 101 and the first receiving transducer 102.As shown in figure 5, when baffle element not first away from
During from the detection zone of sensor assembly 100, the first detection signal of the first transmitting probe 101 transmitting will not be received by first
Probe 102 receives.As shown in figure 4, when baffle element is in the detection zone of the first distance sensor module 100, the first hair
The first detection signals for penetrating the transmitting of probe 101 are blocked thing 300 and are reflected into the first receiving transducer 102.In this way, the first distance
Whether sensor assembly 100 can interpolate that obstacle 300 in the detection zone of the first distance sensor module 100.Similarly,
Second distance sensor assembly 200 can interpolate that whether obstacle 300 is located at the detection zone of second distance sensor assembly 200
It is interior.First distance sensor module 100 and the detection zone of second distance sensor assembly 200 are appeared in by obstacle 300
Interior time sequencing, above-mentioned motion track recognition methods can interpolate that out the motion track of obstacle 300.Compared to traditional use
The method of image recognition motion track, above-mentioned motion track recognition methods need not gather picture, and algorithm is simple and easy, without exploitation
Complicated software, there is the advantages of cost is low.
Wherein, obstacle 300 can be with the hand of user, or the round-bottomed frying pan that user holds.Traditional motion track identification side
The scheme cost of method is high, complex designing.Also, the influence of the environment such as cam lens vapour especially afraid of water, oil smoke, high temperature, easily
The accuracy of detection is influenceed, or even influences the life-span of camera.Therefore, traditional motion track recognition methods is not suitable for oil suction
In kitchen environment used in cigarette machine.And above-mentioned motion track recognition methods need not gather picture, conceptual design is simple, use
First distance sensor module 100 and the environment fitness of second distance sensor assembly 200 are strong, and reliability is high.
Further, above-mentioned motion track recognition methods can also use multiple distance sensor modules.Multiple distances pass
Sensor module can obtain the curve movement track of obstacle 300.
Further, it is further comprising the steps of after step S500：
S600：Control instruction is generated according to motion track.
S700：According to the operation of control instruction control cigarette machine body 400.
In this way, above-mentioned motion track recognition methods passes through the first distance sensor module 100 and second distance sensor die
Block 200 can obtain different motion tracks, and then can generate different control instructions, realize control cigarette machine body 400
Operation.
Specifically, the step of S600 is specially：Pattern or self-defined motion track are set according to factory default motion track
Setting pattern, different motion tracks is associated with corresponding control instruction.In this way, different motion tracks correspond to it is different
Control instruction, convenience and the personalization of the control of cigarette machine body 400 are realized, improve the usage experience of user.Wherein, control
Instruction can be the rotation speed of fan increase or reduction of cigarette machine body 400, or, illuminating lamp is turned on and off.
Further, step S200 includes：
S201：As shown in Fig. 2 when the first receiving transducer 102 persistently receives the first detection letter in the first preset time
Number, the first distance sensor module 100 produces the first block signal.Wherein, the first preset time can be taking human as setting.Such as
First preset time could be arranged to 80ms-150ms.Specifically, the first preset time could be arranged to 100ms.
And/or step S400 includes：
S401：When the second receiving transducer 202 persistently receives the second detection signal, second distance in the second preset time
Sensor assembly 200 produces the second block signal.Wherein, the second preset time can be taking human as setting.Such as second preset time
It could be arranged to 80ms-150ms.Specifically, the second preset time could be arranged to 100ms.
In above-mentioned motion track recognition methods, the first receiving transducer 102 receives first detection signal, and continues first
Preset time one directly receives first detection signal, and the first distance sensor module 100 just produces the first block signal, confirms resistance
Block material 300 is located in the detection zone of the first distance sensor module 100, so as to avoid obstacle 300 accidentally by first away from
From the detection zone of sensor assembly 100, the mistake of the first distance sensor module 100 is caused to produce the first block signal.Similarly,
Second receiving transducer 202 receives the second detection signal, and continues the second preset time one and directly receive the second detection signal,
Second distance sensor assembly 200 just produces the second block signal, and the mistake of second distance sensor assembly 200 can be avoided to produce
Second block signal.In this way, the reliability of above-mentioned motion track recognition methods is high.
Further, step S200 also includes：
S202：As shown in Fig. 2 when the first receiving transducer 102 receives first detection signal and not reach first persistently pre-
If the time, the first receiving transducer 102 detects whether to receive first detection signal again.
And/or step S400 also includes：
S402：When the second receiving transducer 202 receives the second detection signal and does not reach the second preset time persistently,
Two receiving transducers 202 detect whether to receive the second detection signal again.
In above-mentioned motion track recognition methods, the first receiving transducer 102 does not continue the first preset time and receives the first inspection
Signal is surveyed, the first receiving transducer 102 detects whether to receive first detection signal again, can avoid because obstacle 300 is even
So by the detection zone of the first distance sensor module 100, either, avoid because user cancels or Iterim Change moves temporarily
First block signal mistake caused by dynamic rail mark produces.Similarly, the second receiving transducer 202 does not continue the second preset time and received
Second detection signal, the second receiving transducer 202 detected whether to receive the second detection signal again, and the second stop can be avoided to believe
Number mistake produce.In this way, the reliability of above-mentioned motion track recognition methods is high.
Further, step S500 includes：
S510：As shown in Fig. 2 after the first block signal produces, the second block signal produces, then the moving rail of baffle element
Mark is to be moved along the first distance sensor module 100 to the direction of second distance sensor assembly 200.
S520：After the second block signal produces, the first block signal produces, then the motion track of baffle element is along second
The direction movement of the distance sensor module of distance sensor module 200 to the first 100.
Above-mentioned motion track recognition methods, the time sequencing occurred according to the first block signal and the second block signal, energy
The motion track for enough judging baffle element is along the first distance sensor module 100 to the side of second distance sensor assembly 200
Moved to movement, or along the direction of the distance sensor module 100 of second distance sensor assembly 200 to the first, so as to
The motion track of baffle element is obtained exactly, and then realizes the operation for controlling cigarette machine body 400 exactly.
Further, as shown in Fig. 2 step S510 includes：
S511：After the first block signal produces, judge whether the second receiving transducer 202 receives the second detection signal.
S512：In this way, then the second block signal produces.
S513：Otherwise, in the 3rd preset time, continue to judge whether the second receiving transducer 202 receives the second detection
Signal；In this way, then the second block signal produces；Otherwise, the first distance sensor module 100 and second distance sensor are initialized
Module 200.Wherein, the 3rd preset time can be taking human as setting.Such as the 3rd preset time could be arranged to 400ms-600ms.
Specifically, the 3rd preset time could be arranged to 500ms.
In above-mentioned motion track recognition methods, after the first block signal produces, the second receiving transducer 202 does not connect immediately
Receive the second detection signal, it may be possible to because the speed that obstacle 300 moves not yet reaches second distance sensor die slowly excessively
In the detection zone of block 200, it may be possible to signal transmission delay, it is also possible to the self delay of software program, therefore, extend the 3rd
Preset time is used to continue to detect whether the second receiving transducer 202 receives the second detection signal, avoids prematurely arbitrary decision from drawing
Second receiving transducer 202 does not receive the conclusion of the second detection signal.When the second receiving transducer 202 is really in the 3rd preset time
When not receiving the second detection signal inside, then invalid detection is now detected as, initialize the first distance sensor module 100 and the
Two distance sensor modules 200, the first distance sensor module 100 and second distance sensor assembly 200 can in time after
The continuous motion track for reacquiring obstacle 300.
Specifically, step S500 also includes：
S530：When the first block signal and the second block signal produce simultaneously, and the 4th preset time is continued above, then
Judge baffle element for transfixion.Wherein, the 4th preset time can be taking human as setting.Such as the 4th preset time can set
For 0.5s-3s.Specifically, the 4th preset time could be arranged to 1s.
In this way, above-mentioned motion track recognition methods passes through the same caused bar of the first block signal and the second block signal
Part, and extend the 4th preset time, acquisition baffle element is actionless state.When baffle element is transfixion, cigarette machine sheet
The controller of body 400 can generate corresponding control instruction, can also be defaulted as no instruction.
Similarly, step S520 includes：
S521：After the second block signal produces, judge whether the first receiving transducer 102 receives the second detection signal.
S522：In this way, then the first block signal produces.
S523：Otherwise, in the 5th preset time, continue to judge whether the first receiving transducer 102 receives the first detection
Signal；In this way, then the first block signal produces；Otherwise, the first distance sensor module 100 and second distance sensor are initialized
Module 200.Wherein, the 5th preset time can be taking human as setting.Such as the 5th preset time could be arranged to 400ms-600ms.
Specifically, the 5th preset time could be arranged to 500ms.
In above-mentioned motion track recognition methods, after the second block signal produces, the first receiving transducer 102 does not connect immediately
Receive first detection signal, it may be possible to because the speed that obstacle 300 moves not yet reaches the first range sensor mould slowly excessively
In the detection zone of block 100, it may be possible to signal transmission delay, it is also possible to the self delay of software program, therefore, extend the 5th
Preset time is used to continue to detect whether the first receiving transducer 102 receives first detection signal, avoids prematurely arbitrary decision from drawing
First receiving transducer 102 does not receive the conclusion of first detection signal.When the first receiving transducer 102 is really in the 5th preset time
When not receiving first detection signal inside, then invalid detection is now detected as, initialize the first distance sensor module 100 and the
Two distance sensor modules 200, the first distance sensor module 100 and second distance sensor assembly 200 can in time after
The continuous motion track for reacquiring obstacle 300.
Specifically, step S200 includes：
S203：When the distance of baffle element and the first distance sensor module 100 is 20cm-50cm, the first receiving transducer
102 can receive the first detection signal reflected through baffle element.
And/or step S400 includes：
S403：When the distance of baffle element and second distance sensor assembly 200 is 20cm-50cm, the second receiving transducer
202 can receive the second detection signal reflected through baffle element.
Above-mentioned motion track recognition methods is 20cm-50cm by identifying the distance with the first distance sensor module 100
Obstacle 300 and/or moving rail with obstacle 300 that the distance of second distance sensor assembly 200 is 20cm-50cm
Mark, correct control instruction can be sent.When the distance sensor module 100 of obstacle 300 and first and/or second distance sense
When the distance of device module 200 is excessive or too small, obstacle 300 is chaff interference.To avoid the motion track of chaff interference from causing to make an uproar
The detection range of the generation of sound signal, the first distance sensor module 100 and/or second distance sensor assembly 200 is defined to
20cm-50cm。
Below to judge whether the motion track of obstacle 300 is along the first distance sensor module 100 to second distance
Exemplified by the movement of the direction of sensor assembly 200, above-mentioned motion track recognition methods is explained.
As shown in Fig. 2 first, initialize the first distance sensor module 100 and second distance sensor assembly 200.This
When, if original the first block signal generated or the second block signal are cleared.First transmitting probe 101 transmitting first
Detection signal, the second transmitting probe 201 transmitting first detection signal.
Second, when the first receiving transducer 102 receives first detection signal, then judge whether lasting first preset time,
In this way, then the first block signal is generated, is carried out in next step.Otherwise, rejudge whether the first receiving transducer 102 receives first
Whether detection signal, new record duration of laying equal stress on reach the first preset time.When the first receiving transducer 102 does not receive
One detection signal, and in the 5th preset time, the first receiving transducer 102 do not receive first detection signal yet, initialization the
One distance sensor module 100 and second distance sensor assembly 200, the first transmitting probe 101 re-emit the first detection letter
Number, the second transmitting probe 201 re-emits the second detection signal.
3rd, judge whether the second receiving transducer 202 receives the second detection signal.When the second receiving transducer 202 receives
To the second detection signal, then lasting second preset time is further determined whether, in this way, then obtain the moving rail of obstacle 300
Mark is to be moved along the first distance sensor module 100 to the direction of second distance sensor assembly 200.Otherwise, second is rejudged
Whether receiving transducer 202 receives the second detection signal.When the second receiving transducer 202 does not receive the second detection signal, and
In the 3rd preset time, the second receiving transducer 202 does not receive the second detection signal yet, initializes the first range sensor mould
Block 100 and second distance sensor assembly 200, the first transmitting probe 101 re-emit first detection signal, the second transmitting probe
201 re-emit the second detection signal.
A kind of range hood, including cigarette machine body 400, the first distance sensor module 100 and second distance sensor die
Block 200.First distance sensor module 100 and second distance sensor assembly 200 are arranged at intervals on cigarette machine body 400.
First distance sensor module 100 includes the first transmitting probe 101 and the first receiving transducer 102.First transmitting is visited
First 101 are used to launch first detection signal.First receiving transducer 102 is used to receive the first detection signal reflected through baffle element.
First distance sensor module 100 and the controller of cigarette machine body 400 are electrically connected with.
Second distance sensor assembly 200 includes the second transmitting probe 201 and the second receiving transducer 202.Second transmitting is visited
First 201 are used to launch the second detection signal.Second receiving transducer 202 is used to receive the second detection signal reflected through baffle element.
The controller of second distance sensor assembly 200 and cigarette machine body 400 is electrically connected with.
The range hood of present invention beneficial effect caused by compared with background technology：Above-mentioned range hood by first away from
From sensor assembly 100 and second distance sensor assembly 200, the motion track of obstacle 300 is obtained, and then is generated corresponding
Control instruction, it is easy to user to control the operation of cigarette machine body 400 in a non-contact manner by gesture or other objects.Above-mentioned oil suction
Cigarette machine need not gather picture, and algorithm is simple and easy, without developing complicated software, have the advantages of cost is low.
Specifically, the first distance sensor module 100 and/or second distance sensor assembly 200 are infrared-type distance
Sensor assembly, ultrasonic type distance sensor module, radar waves distance sensor module or laser type range sensor mould
Block.
Each technical characteristic of above example can be combined arbitrarily, to make description succinct, not to above-described embodiment
In each technical characteristic it is all possible combination be all described, as long as however, lance is not present in the combination of these technical characteristics
Shield, all it is considered to be the scope of this specification record.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that come for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of motion track recognition methods, it is characterised in that comprise the following steps：
The first transmitting probe (101) transmitting first detection signal of first distance sensor module (100)；
When the first detection signal reflexes to through baffle element the first receiving transducer of first distance sensor module (100)
(102) when, first distance sensor module (100) produces the first block signal；
The second transmitting probe (201) of second distance sensor assembly (200) launches the second detection signal, and first distance passes
Sensor module (100) and the second distance sensor assembly (200) are arranged at intervals on cigarette machine body (400)；
When second detection signal reflexes to through baffle element the second receiving transducer of the second distance sensor assembly (200)
(202) when, the second distance sensor assembly (200) produces the second block signal；
According to the time sequencing for producing first block signal and second block signal, the moving rail of baffle element is obtained
Mark.
2. motion track recognition methods according to claim 1, it is characterised in that described according to generation first resistance
Keep off the time sequencing of signal and second block signal, after the motion track step for obtaining baffle element, in addition to following step
Suddenly：
Control instruction is generated according to the motion track；
The operation of the cigarette machine body (400) is controlled according to the control instruction.
3. motion track recognition methods according to claim 1, it is characterised in that
First reception worked as the first detection signal and first distance sensor module (100) is reflexed to through baffle element
Pop one's head in (102) when, the step of first distance sensor module (100) produces the first block signal, includes：When the first reception
Probe (102) persistently receives the first detection signal, first distance sensor module in the first preset time
(100) the first block signal is produced；
It is and/or described when second detection signal reflexes to the of the second distance sensor assembly (200) through baffle element
During two receiving transducers (202), the step of second distance sensor assembly (200) produces the second block signal, includes：When
Two receiving transducers (202) persistently receive second detection signal, the second distance sensor in the second preset time
Module (200) produces the second block signal.
4. motion track recognition methods according to claim 3, it is characterised in that
First reception worked as the first detection signal and first distance sensor module (100) is reflexed to through baffle element
Pop one's head in (102) when, the step of first distance sensor module (100) produces the first block signal, also includes：Connect when first
Receive probe (102) to receive the first detection signal and do not reach the first preset time persistently, first receiving transducer
(102) detect whether to receive first detection signal again；
It is and/or described when second detection signal reflexes to the of the second distance sensor assembly (200) through baffle element
During two receiving transducers (202), the step of second distance sensor assembly (200) produces the second block signal, also includes：When
Second receiving transducer (202) receives second detection signal and does not reach the second preset time persistently, and described second receives
Probe (202) detects whether to receive the second detection signal again.
5. motion track recognition methods according to claim 1, it is characterised in that described to be stopped according to generation described first
The time sequencing of signal and second block signal, include the step of the motion track for obtaining baffle element：
After first block signal produces, second block signal produces, then the motion track of baffle element is along described
Move in first distance sensor module (100) to the direction of the second distance sensor assembly (200)；
After second block signal produces, first block signal produces, then the motion track of baffle element is along described
Move in second distance sensor assembly (200) to the direction of first distance sensor module (100).
6. motion track recognition methods according to claim 5, it is characterised in that when first block signal produces
Afterwards, second block signal produces, then the motion track of baffle element is along first distance sensor module (100) to institute
Stating the specific steps of the direction movement of second distance sensor assembly (200) includes：
After first block signal produces, judge whether the second receiving transducer (202) receives second detection signal；
In this way, then second block signal produces；
Otherwise, in the 3rd preset time, continue to judge whether the second receiving transducer (202) receives the second detection letter
Number；In this way, then second block signal produces；Otherwise, first distance sensor module (100) and described the are initialized
Two distance sensor modules (200).
7. motion track recognition methods according to claim 5, it is characterised in that described to be stopped according to generation described first
The time sequencing of signal and second block signal, also include the step of the motion track for obtaining baffle element：
When first block signal and second block signal produce simultaneously, and the 4th preset time is continued above, then
Judge baffle element for transfixion.
8. motion track recognition methods according to claim 1, it is characterised in that
First reception worked as the first detection signal and first distance sensor module (100) is reflexed to through baffle element
Pop one's head in (102) when, the step of first distance sensor module (100) produces the first block signal, includes：When baffle element with
When the distance of first distance sensor module (100) is 20cm-50cm, the first receiving transducer (102) can receive through
The first detection signal of baffle element reflection；
It is and/or described when second detection signal reflexes to the of the second distance sensor assembly (200) through baffle element
During two receiving transducers (202), the step of second distance sensor assembly (200) produces the second block signal, includes：Work as resistance
When block body and the distance of the second distance sensor assembly (200) are 20cm-50cm, the second receiving transducer (202) can connect
Receive the second detection signal reflected through baffle element.
9. a kind of range hood, it is characterised in that including cigarette machine body (400), the first distance sensor module (100) and second
Distance sensor module (200), first distance sensor module (100) and the second distance sensor assembly (200)
It is arranged at intervals on the cigarette machine body (400)；
First distance sensor module (100) includes the first transmitting probe (101) and the first receiving transducer (102), described
First transmitting probe (101) is used to launch first detection signal, and it is anti-through baffle element that first receiving transducer (102) is used for reception
The first detection signal penetrated；The controller of first distance sensor module (100) and the cigarette machine body (400) electrically connects
Connect；
The second distance sensor assembly (200) includes the second transmitting probe (201) and the second receiving transducer (202), described
Second transmitting probe (201) is used to launch the second detection signal, and it is anti-through baffle element that second receiving transducer (202) is used for reception
The second detection signal penetrated；The controller of the second distance sensor assembly (200) and the cigarette machine body (400) electrically connects
Connect.
10. range hood according to claim 9, it is characterised in that first distance sensor module (100) and/
Or the second distance sensor assembly (200) be infrared-type distance sensor module, ultrasonic type distance sensor module,
Radar waves distance sensor module or laser type distance sensor module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710880621.7A CN107543227A (en) | 2017-09-25 | 2017-09-25 | Motion track recognition methods and use its range hood |
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| CN201710880621.7A CN107543227A (en) | 2017-09-25 | 2017-09-25 | Motion track recognition methods and use its range hood |
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