CN105891158A - Circuit and sensor for detecting quantity value of attachments and range hood - Google Patents
Circuit and sensor for detecting quantity value of attachments and range hood Download PDFInfo
- Publication number
- CN105891158A CN105891158A CN201610196103.9A CN201610196103A CN105891158A CN 105891158 A CN105891158 A CN 105891158A CN 201610196103 A CN201610196103 A CN 201610196103A CN 105891158 A CN105891158 A CN 105891158A
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- CN
- China
- Prior art keywords
- circuit
- resistance
- infrared
- attachment
- value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/4738—Diffuse reflection, e.g. also for testing fluids, fibrous materials
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/4738—Diffuse reflection, e.g. also for testing fluids, fibrous materials
- G01N2021/4764—Special kinds of physical applications
Abstract
The invention discloses a circuit and a sensor for detecting the quantity value of attachments and a range hood. The circuit for detecting the quantity value of attachments comprises a control circuit, an infrared emission circuit, an infrared receiving circuit and a signal amplification circuit. The control end of the control circuit is connected with the controlled end of the infrared emission circuit, the feedback end of the control circuit is connected with the output end of the signal amplification circuit, and the input end of the signal amplification circuit is connected with the output end of the infrared receiving circuit. According to the technical scheme, the quantity value of attachments can be accurately detected.
Description
Technical field
The present invention relates to lampblack absorber technical field, detect the circuit of attachment value, biography particularly to a kind of
Sensor and lampblack absorber.
Background technology
Although lampblack absorber fume eliminating effect is fairly obvious, not only purifies indoor environment, further improved indoor
Air quality, but when lampblack absorber runs, greasy dirt is easily bonded in housing and the blower fan leaf of smoke exhaust ventilator
On wheel, forming after grease not easy-clear, it, bring negative effect will to the operation of lampblack absorber for a long time,
And user also cannot determine when to need to be carried out it, the most inconvenient.
Summary of the invention
The main object of the present invention is to provide a kind of circuit detecting attachment value, it is intended to realize detection oil
The dirty degree of cigarette machine, in order to user cleans in time.
For achieving the above object, the present invention propose detection attachment value circuit include control circuit,
Infrared transmitting circuit, infrared receiving circuit and signal amplification circuit；The control end of described control circuit and institute
The controlled end stating infrared transmitting circuit connects, the feedback end of described control circuit and described signal amplification circuit
Outfan connect, the outfan of the input of described signal amplification circuit and described infrared receiving circuit is even
Connect；Wherein, described infrared transmitting circuit, for launching infrared ray to attachment to be measured；Described infrared connect
Receive circuit, for receiving the infrared ray of described attachment to be measured reflection and exporting the infrared ray received therewith
The signal of telecommunication that intensity is corresponding；Described signal amplification circuit, for export described infrared receiving circuit
The signal of telecommunication carries out signal processing and amplifying, and is delivered to described control circuit；Described control circuit, is used for controlling
Make the work of described infrared transmitting circuit and the signal of telecommunication that exports according to described signal amplification circuit calculates to be measured
The amount of attachment.
Preferably, described infrared transmitting circuit include the first resistance, the second resistance, the 3rd resistance, the 4th
Resistance, the first switching tube, the first infrared transmitting tube and the second infrared transmitting tube；The of described second resistance
One end is the controlled end of described infrared transmitting circuit, the second end of described second resistance, described first resistance
The first end and described first switching tube controlled end interconnection；Second end of described first resistance and described
The input of one switching tube connects power supply, the outfan of described first switching tube, the of described 3rd resistance
One end and the first end interconnection of described 4th resistance；Second end of described 3rd resistance is by described first red
Emission pipe ground connection, the second end of described 4th resistance passes through described second infrared transmitting tube ground connection.
Preferably, described infrared receiving circuit includes the 5th resistance, the 6th resistance, the 7th resistance and infrared
Receive pipe；The input of described infrared receiving tube connects power supply, the outfan of described infrared receiving tube, institute
State the first end of the 5th resistance and the first end interconnection of described 6th resistance；Second end of described 6th resistance
Being connected with the first end of described 7th resistance, described 6th resistance with the link node of described 7th resistance is
The outfan of described infrared receiving circuit；Second end of described 5th resistance and the second of described 7th resistance
End ground connection.
Preferably, described signal amplification circuit is differential amplifier circuit.
Preferably, described differential amplifier circuit include the 8th resistance, the 9th resistance, the tenth resistance, the tenth
One resistance and operational amplifier；First end of described 8th resistance connects power supply, the of described 8th resistance
First end interconnection of two ends, the first end of described 9th resistance and described tenth resistance；Described tenth resistance
The second end, the first end of described 11st resistance and described operational amplifier inverting input interconnection；
Described second end of the 11st resistance is connected with the outfan of described operational amplifier, described 11st resistance
With the outfan that the link node of described operational amplifier is described differential amplifier circuit, described operation amplifier
The input that input in the same direction is described differential amplifier circuit of device.
Preferably, described control circuit includes control chip and the first electric capacity；The input of described control chip
The feedback end that end is described control circuit, the control that control end is described control circuit of described control chip
End；First end of described first electric capacity and the power end of described control chip connect power supply, described first electricity
The second end held and the earth terminal ground connection of described control chip.
Preferably, the circuit of described detection attachment value also includes communication interface, and described communication interface is used
Communication between circuit and the miscellaneous equipment of described detection attachment value.
Preferably, the communication modes between circuit and the miscellaneous equipment of described detection attachment value is wireless
Communication or wire communication.
The present invention also proposes a kind of sensor detecting attachment value, including detecting attachment as above
The circuit of thing value；Wherein, detection attachment value circuit include control circuit, infrared transmitting circuit,
Infrared receiving circuit and signal amplification circuit；The control end of described control circuit and described infrared transmitting circuit
Controlled end connect, the feedback end of described control circuit is connected with the outfan of described signal amplification circuit,
The input of described signal amplification circuit is connected with the outfan of described infrared receiving circuit；Wherein, described
Infrared transmitting circuit, for launching infrared ray to attachment to be measured；Described infrared receiving circuit, is used for connecing
Receive the infrared ray of described attachment to be measured reflection and export the electricity that the infra-red intensity received therewith is corresponding
Signal；Described signal amplification circuit, carries out signal for the signal of telecommunication exported by described infrared receiving circuit
Processing and amplifying, and it is delivered to described control circuit；Described control circuit, is used for controlling described infrared emission
Circuit work the signal of telecommunication exported according to described signal amplification circuit calculate the amount of attachment to be measured.
The present invention also proposes a kind of lampblack absorber, and this lampblack absorber includes detecting attachment value as above
Sensor, the concrete structure of this sensor is with reference to above-mentioned, and here is omitted.
Technical solution of the present invention launches infrared ray and infrared by using infrared transmitting circuit to attachment to be measured
Receive circuit reception and through the infrared ray of attachment reflection and export the correspondingly sized signal of telecommunication so that control electricity
Road can calculate the value of attachment to be measured exactly according to this signal of telecommunication.Additionally, arrange differential amplification electricity
The signal of telecommunication that infrared receiving circuit exports is amplified processing and is delivered to control circuit again by road, improves inspection
Survey the sensitivity of the circuit of attachment value.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality
Execute the required accompanying drawing used in example or description of the prior art to be briefly described, it should be apparent that below,
Accompanying drawing in description is only some embodiments of the present invention, for those of ordinary skill in the art,
On the premise of not paying creative work, it is also possible to obtain other according to the structure shown in these accompanying drawings
Accompanying drawing.
Fig. 1 is the high-level schematic functional block diagram that the present invention detects circuit one embodiment of attachment value；
Fig. 2 is the electrical block diagram that the present invention detects another embodiment of circuit of attachment value；
Fig. 3 is the structural representation that the present invention detects sensor one embodiment of attachment value；
Fig. 4 is the sensor elevational schematic view detecting attachment value in Fig. 3；
Fig. 5 is the cross-sectional view in Fig. 4 along III-III line；
Fig. 6 is the cross-sectional view in Fig. 4 along IV-IV line；
Fig. 7 is the structural representation of its mounting seat of sensor detecting attachment value in Fig. 3；
Fig. 8 is the Sensor section decomposition texture schematic diagram detecting attachment value in Fig. 3；
Fig. 9 is the structural representation of cap in Fig. 8；
Figure 10 is the structural representation of body in Fig. 8；
Figure 11 is the structural representation of circuit board in Fig. 8；
Figure 12 is the scene schematic diagram that in Fig. 3, the sensor of detection attachment value is applied to lampblack absorber.
Drawing reference numeral illustrates:
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, do referring to the drawings further
Explanation.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present invention,
Rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not having
Make the every other embodiment obtained under creative work premise, broadly fall into the scope of protection of the invention.
It is to be appreciated that directional instruction in the embodiment of the present invention (such as upper and lower, left and right, front,
After ...) it is only used for explanation phase para-position under a certain particular pose (as shown in drawings) between each parts
Putting relation, motion conditions etc., if this particular pose changes, then directionality indicates the most correspondingly
Change therewith.
It addition, the description relating to " first ", " second " etc. in the present invention is only used for describing purpose, and
It is not intended that indicate or imply its relative importance or the implicit number indicating indicated technical characteristic
Amount.Thus, define " first ", the feature of " second " can be expressed or implicitly include at least one
Individual this feature.It addition, the technical scheme between each embodiment can be combined with each other, but must be with
Based on those of ordinary skill in the art are capable of, when conflicting or nothing occurs in the combination of technical scheme
Will be understood that when method realizes that the combination of this technical scheme does not exists, the most not at the protection model of application claims
Within enclosing.
The present invention proposes a kind of circuit detecting attachment value.
Referring to figs. 1 through 2, Fig. 1 is that the functional module of circuit one embodiment that the present invention detects attachment value is shown
It is intended to；Fig. 2 is the electrical block diagram that the present invention detects another embodiment of circuit of attachment value.
As it is shown in figure 1, in embodiments of the present invention, the circuit of this detection attachment value includes controlling electricity
Road 10, infrared transmitting circuit 20, infrared receiving circuit 30 and signal amplification circuit 40；Described control electricity
The end that controls on road 10 is connected with the controlled end of described infrared transmitting circuit 20, described control circuit 10 anti-
Feedback end is connected with the outfan of described signal amplification circuit 40, the input of described signal amplification circuit 40
It is connected with the outfan of described infrared receiving circuit 30；Wherein, described infrared transmitting circuit 20, for
Attachment to be measured launches infrared ray；Described infrared receiving circuit 30, is used for receiving described attachment to be measured anti-
The infrared ray penetrated also exports the signal of telecommunication that the infra-red intensity received therewith is corresponding；Described signal amplifies
Circuit 40 is for carrying out signal processing and amplifying by the signal of telecommunication that described infrared receiving circuit 30 exports and defeated
Deliver to described control circuit 10；Described control circuit 10, is used for controlling described infrared transmitting circuit 20 work
Make and calculate according to the signal of telecommunication of described signal amplification circuit 40 output the amount of attachment to be measured.
Control circuit 10 being powered on, control circuit 10 controls infrared transmitting circuit 20 and launches red to attachment
Outside line.Thereafter, infrared receiving circuit 30 receives the infrared ray of attachment reflection and exports and attachment value
The corresponding signal of telecommunication is to signal amplification circuit 40, and this signal of telecommunication is amplified place by signal amplification circuit 40
Export after reason to control circuit 10.The magnitude of voltage that control circuit 10 inputs according to its feedback end prestores with it electricity
Pressure value is compared, and then draws the value of attachment.
It is understood that when Infrared certain plane of directive at an angle, it may occur that reflection is existing
As.When this plane does not has attachment, light diffuse-reflectance is less, and it is anti-that infrared receiving circuit 30 receives
The light penetrated is stronger；When this plane has attachment, light diffuse-reflectance is relatively big, and infrared receiving circuit 30 connects
The light of the reflection received is more weak.Along with increasing of attachment, infrared receiving circuit connects 30 reflections received
Light gradually weakens, and the signal of its output to signal amplification circuit 40 also can occur to change accordingly.Due to
The value of the signal of telecommunication and the attachment of infrared receiving circuit output 30 has certain corresponding relation, therefore,
The circuit of this detection attachment value can draw the value of attachment exactly.
Technical solution of the present invention launches infrared ray and red by using infrared transmitting circuit 20 to attachment to be measured
Outer reception circuit 30 receive through attachment reflection infrared ray and export the correspondingly sized signal of telecommunication so that control
Circuit 10 processed can calculate the value of attachment to be measured exactly according to this signal of telecommunication.Additionally, arrange signal
The signal of telecommunication of infrared receiving circuit output 30 is amplified processing and is delivered to control electricity again by amplifying circuit 40
Road 10, improves the sensitivity of the circuit of detection attachment value.
Preferably, described infrared transmitting circuit 20 includes the first resistance R1, the second resistance R2, the 3rd electricity
Resistance R3, the 4th resistance R4, the first switching tube Q1, the first infrared transmitting tube D1 and the second infrared emission
Pipe D2；The controlled end that first end is described infrared transmitting circuit 20 of described second resistance R2, described
Second end of two resistance R2, first end of described first resistance R1 and described first switching tube Q1 are subject to
Control end interconnection；Second end of described first resistance R1 and the input of described first switching tube Q1 connect electricity
Source (VCC as shown in Figure 2), the outfan of described first switching tube Q1, described 3rd resistance R3
The first end and described 4th resistance R4 first end interconnection；Second end of described 3rd resistance R3 passes through
Described first infrared transmitting tube D1 ground connection GND, second end of described 4th resistance R4 passes through described second
Infrared transmitting tube D2 ground connection GND.It should be noted that in the present embodiment, described first infrared emission
Pipe and described second infrared transmitting tube are infrared-emitting diode, the sun of described first infrared transmitting tube D1
Pole is connected with second end of described 3rd resistance R3, the minus earth of described first infrared transmitting tube D1
GND；The anode of described second infrared transmitting tube D2 is connected with second end of described 4th resistance R4, institute
State the minus earth GND of the second infrared transmitting tube D2.Additionally, due to this first switching tube Q1 is at circuit
In only play on-off action, therefore, this first switching tube Q1 can be audion, it is also possible to be metal-oxide-semiconductor,
The particular type of the first switching tube is not limited herein.Hereinafter, with the first switching tube for positive-negative-positive three pole
Illustrate as a example by pipe.
When first termination of the second resistance R2 receives low level signal, the first switching tube Q1 conducting, have
Electric current flows through the first infrared transmitting tube D1 and the second infrared transmitting tube D2, and infrared transmitting circuit 20 is to attachment
Thing launches infrared ray.When first termination of the second resistance R2 receives high level signal, the first switching tube
Q1 ends, and no current flows through the first infrared transmitting tube D1 and the second infrared transmitting tube D2, infrared emission electricity
Road 20 does not works.Wherein, the electric current that the 3rd resistance R3 flows through the first infrared transmitting tube D1 for management and control is big
Little, the 4th resistance R4 flows through the size of current of the second infrared transmitting tube D2 for management and control, by changing the
Three resistance R3 and the resistance of the 4th resistance R4, thus it is possible to vary the infrared ray that this infrared transmitting circuit 20 sends
Intensity.
Preferably, described infrared receiving circuit 30 includes the 5th resistance R5, the 6th resistance R6, the 7th electricity
Resistance R7 and infrared receiving tube Q2；The input of described infrared receiving tube Q2 connects power supply (as shown in Figure 2
VCC), the outfan of described infrared receiving tube Q2, first end of described 5th resistance R5 and described
The first end interconnection of the 6th resistance R6；Second end of described 6th resistance R6 and described 7th resistance R7
First end connect, the link node of described 6th resistance R6 and described 7th resistance R7 is described infrared
Receive the outfan of circuit 30；Second end of described 5th resistance R5 and the second of described 7th resistance R7
End ground connection GND.It should be noted that in the present embodiment, described infrared receiving tube Q2 is infrared receiver
Audion.
When infrared receiving tube Q2 receives infrared signal, infrared receiving tube Q2 turns on, and, infrared
The intensity of the infrared signal that the emitter current size of reception pipe Q2 receives therewith is directly proportional.Infrared receiver
The emitter current of pipe Q2 produces voltage drop at the 5th resistance R5 two ends, and this voltage passes through the 6th resistance R6
And the 7th resistance R7 be delivered to control circuit 10.
Preferably, described signal amplification circuit 40 is differential amplifier circuit, and this differential amplifier circuit includes
Eight resistance R8, the 9th resistance R9, the tenth resistance R10, the 11st resistance R11 and operational amplifier U1；
First end of described 8th resistance R8 connects power supply (VCC as shown in Figure 2), described 8th resistance R8
The second end, first end of described 9th resistance R9 and described tenth resistance R10 first end interconnection；Institute
State second end of the tenth resistance R10, first end of described 11st resistance R11 and described operational amplifier
The inverting input interconnection of U1；Second end of described 11st resistance R11 and described operational amplifier U1
Outfan connect, described 11st resistance R11 is described with the link node of described operational amplifier U1
The outfan of differential amplifier circuit, the input in the same direction of described operational amplifier U1 is described differential amplification electricity
The input on road.
The voltage swing of the inverting input being apparent from operational amplifier U1 is Vf=5R9/ (R8+R9), note fortune
The voltage swing of the in-phase input end calculating amplifier U1 is Vin；The then outfan of operational amplifier U1
Voltage swing is Vout=R7 (R10+R11)/(R6+R7) Vin-(R11/R10) Vf.If R11/R10=R7/R6,
Then the output voltage size of operational amplifier U1 is Vout=(Vin-Vf) R11/R10, then operational amplifier U1
Amplification be R11/R10.
Preferably, described control circuit 10 includes control chip (control chip as shown in Figure 2) and
One electric capacity C1；The input IN of described control chip is the feedback end of described control circuit 10, described control
The control end that control end CT is described control circuit 10 of coremaking sheet；The first of described first electric capacity C1
The power end VCC of end and described control chip connects power supply VCC, second end of described first electric capacity C1
And the earth terminal GND ground connection GND of described control chip.Wherein, described first electric capacity C1 is filtered electrical
Holding, in the present embodiment, the preferred model of this control chip is SC91F711, and its concrete model is not done
Limit.
Further, the circuit of described detection attachment value also includes that communication interface 50, described communication connect
The mouth 50 communications between circuit and the miscellaneous equipment detecting attachment value.Wherein, communication interface 50
Including for external signal being transferred to the first signal transmission terminal M1 of control circuit 10 and being used for controlling
The data information transfer that circuit 10 processed sends is to the secondary signal transmission terminal M2 of external equipment.Controlling
After circuit 10 knows attachment value, control circuit 10 passes through communication interface 50 by related data information
Be sent to user, wherein it is possible to arrange near attachment display device electrically connect with communication interface 50 with
The data message of display attachment value.Of course, it is possible to make the circuit of detection attachment value set with other
Communication modes between Bei is wireless telecommunications or wire communication, and so, control circuit 10 can be by attachment
The data message of value sends the electronic equipments such as the computer to user, mobile phone.Hereafter, user also by
Feedback information is sent, to inform that control circuit 10 user has known attachment to be measured to control circuit 10
Value.
Hereinafter, in conjunction with Fig. 1 and Fig. 2, illustrate that the present invention detects the operation principle of the circuit of attachment value:
Powering on to described control chip, the control end CT output low level signal of described control chip is to described
The controlled end of the first switching tube Q1, described first switching tube Q1 conducting, electric current flows through the 3rd resistance R3
The second infrared transmitting tube D2 is flowed to the first infrared transmitting tube D1 with through the 4th resistance R4, first infrared
Penetrate pipe D1 and the second infrared transmitting tube D2 and launch infrared ray to attachment.
Infrared receiving tube Q2 receive attachment reflection infrared ray, the input of infrared receiving tube Q2 with
The ultrared intensity that size of current between outfan receives therewith is corresponding, when infrared ray is strong,
Electric current is big, and when infrared ray is weak, electric current is little.Meanwhile, the two ends of the 5th resistance R5 produce voltage drop
And it being delivered to the in-phase input end of operational amplifier U1, operational amplifier U1 is by certain for this voltage amplification times
Exporting the input IN to control chip after number, this voltage signal is carried out analog-to-digital conversion process by control chip,
To improve accuracy of detection further.Thereafter, control chip is by the most pre-for the voltage after analog-to-digital conversion process
The magnitude of voltage deposited is compared, to know the value of the attachment corresponding with this voltage swing.Finally,
Control chip passes through the 12nd resistance R12 and the 13rd resistance R13 by the data message of this attachment value
It is transferred to communication interface 50, so that this data message is sent to mobile phone, display screen etc. aobvious by communication interface 50
Show equipment, inform the value of user's attachment.
The present invention also proposes a kind of sensor detecting attachment value, the sensing of this detection attachment value
Device includes housing 1, mounting seat 2 and optical processing assembly (sign)；Wherein, optical processing assembly includes
Lens 31 and the circuit detecting attachment value as above.The tool of the circuit of this detection attachment value
Body structure is with reference to above-described embodiment, owing to the sensor of detection attachment value have employed above-mentioned all enforcement
Whole technical schemes of example, the most at least have that the technical scheme of above-described embodiment brought is all useful
Effect, this is no longer going to repeat them.
It should be noted that in the circuit of detection attachment value, control circuit 10 and signal amplification circuit
40 are located on circuit board 32, the first infrared transmitting tube D1, the second infrared transmitting tube D2 and infrared receiver
Pipe Q2 electrically connects with circuit board 32.For ease of describing, below, replace above-mentioned first with light emission part 33
Infrared transmitting tube D1 and the second infrared transmitting tube D2, replaces above-mentioned infrared receiving tube with light receiving piece 34
Q2。
The side of said lens 31 is provided with transparent surface 311, the opposite side of lens 31 be provided with the plane of incidence 312 and
Exit facet 313.Light emission part 33 is arranged towards the plane of incidence 312, and light receiving piece 34 is towards exit facet 313
Arrange.It is luminous that circuit board 32 is used for controlling light emission part 33, receives the light sensibility reciprocal signal of light receiving piece 33,
And judge the situation of the attachment of attachment at transparent surface 311 according to this light sensibility reciprocal signal.
Optical processing assembly and mounting seat 2 are respectively positioned in housing 1, light emission part 33, light receiving piece 34 and thoroughly
Mirror 31 is fixed in mounting seat 2, and housing 1 offers window 111, outside the transparent surface 311 of lens 31
It is exposed at window 111.
In the present embodiment, lens 31 use transparent material to make, in order to light is inside lens 31
Propagate.Specifically, the plane of incidence 312 is connected to the periphery of exit facet 313, exit facet 313 and the plane of incidence
312 enclose the trapezoidal or polyhedron boss of formation in the side of transparent surface 311.For attachment outside transparent surface 311
The sampling face of thing, and attachment amount of light at the change of value and exit facet 313 at transparent surface 311
Change be correlated with.
After optical processing assembly coordinates with mounting seat 2, the window 111 can offered from housing 1 or other open
Pore structure loads housing 1.Mounting seat 2 is at least in order to fixing light emission part 33, light receiving piece 34 and lens
31, which is provided with corresponding fixed structure, and housing 1 is mainly in order to avoid the light of environment to enter lens
31 or be directly entered light receiving piece 34, i.e. producing din-light affects accuracy of detection.Additionally, shell can be to it
Interior parts protect.
During work, light receiving piece 34 receives the light of attachment reflection, and exports relative with this light intensity
The signal of telecommunication answered to signal amplification circuit, the signal of telecommunication after amplified process is analyzed by control circuit,
Draw attachment value.
The present invention detects the sensor of attachment value by by light emission part 33, light receiving piece 34 and lens
After 31 are fixed in mounting seat 2, and shell can be put the most again, so, during assembling, light emission part 33,
The activity space of light receiving piece 34 and lens 31 is big, and operation is convenient and is difficult to interfere with miscellaneous part,
Be simultaneously also beneficial to each optical element be directed at mounting seat 2 respectively, thus ensure between each optical element mutual
Positional precision, and then guarantee the accuracy of detection of sensor.
Further, one end of mounting seat 2 is provided with the recess 20 of accommodating lens 31, mounting seat 22 another
One end is fixed with housing 1.
In the present embodiment, mounting seat 2 is fixing with housing 1 is possible to prevent the relative housing of mounting seat 21 to shake
Dynamic, and lens 31 can be carried out spacing by the recess 20 arranged in mounting seat 2, prevents lens 31 relative
Mounting seat 2 is rocked；Meanwhile, the internal face of this recess 20 can also to transparent surface 311 at lens 31 with
Outer position carries out shading.
Further, mounting seat 2 include the first pedestal 21 that is opposed and that be detachably fixed and with the second pedestal
22, the first pedestal 21 has the first cooperation face (sign) towards the second pedestal 22, the second pedestal 22
Have towards the first pedestal 21 the second cooperation face (sign) of coordinating face to fit with first.
Recess 20 is formed between the first pedestal 21 and the second pedestal 22.First pedestal 21 and second
Being equipped with spacing hole 211 on body 22, the side face of lens 31 is provided with convex with the backstop of spacing hole 211 adaptation
314。
In the present embodiment, the first pedestal 21 that mounting seat 2 is arranged by split blocks with the second pedestal 22
Connect lens 31, specifically, spacing hole 211 314 sockets convex with the backstop on lens 31, and profit can be facilitated
Prevent lens 31 from coming off from mounting seat 2 with this matching relationship.
Further, light emission part 33 and light receiving piece 34 are arranged at the first pedestal 21 and the second pedestal
Between 22.
In the present embodiment, fixing between the first pedestal 21 and the second pedestal 22 is utilized will to include
Light emission part 33 is fixed at interior optical processing assembly with light receiving piece 34, relatively by optical processing assembly
Each parts are fixed with fixing seat respectively, and fixed structure is simpler.
Further, the peripheral wall surfaces of housing 1 cavity volume is provided with the screw hole column extended along housing 1 depth direction
113, screw hole column 113 deviates from one end of window 111 and is provided with screw (sign), on the side face of mounting seat 2
Being provided with lug 212, lug 212 is provided with the fixing hole (do not indicate) adaptive with screw.
In the present embodiment, during assembling, it is assembled to housing 1 in mounting seat 2, and fixing hole and screw hole column
After screw alignment on 113, screw passes fixing hole, screw in screw i.e. complete mounting seat 2 and housing 1 it
Between fixing, simple operation, fixing intensity is high.
Further, refer to Fig. 6 and Fig. 9, in one embodiment, described circuit board 32 is rectangular slab,
Spaced first breach 321 and the second breach 322, described first breach is offered on described circuit board 32
321 and second breach 322 be respectively positioned on the corner portion of described circuit board 32；The corner of circuit board 32 is provided with
One breach 321 and the second breach 322, the first breach 321 in order to the screw dodged and screw is adaptive, second
Breach 322 is in order to coordinate with screw with fixing circuit board 32.
In the present embodiment, specifically, circuit board 32 is rectangular slab, and its corner is provided with two first and lacks
Mouth 321 and second breach 322, by fixed structure the such as second breach 322, and avoiding structure is such as
First breach 321 is arranged at the corner of circuit board 32, thus, it is possible in the middle part shape of circuit board 32
Become continuous print region, so, be conducive to the internal wiring at this circuit board 32, facilitate circuit board 32
Layout designs.
Further, refer to Fig. 9 and Figure 10, in one embodiment, housing 1 includes both ends open
Body 11 and be positioned at the cap 12 of body 11 one end, body 11 one end is formed and loads for optical processing assembly
Uncovered 112, the other end forms window 111, and body 11 and cap 12 are detachably secured at uncovered 112.
In the present embodiment, during assembling, first assembling optical processing assembly and mounting seat 2, the most again by this dress
Accessory loads body 11 at uncovered 112, the most again by uncovered the 112 of corresponding for cap 12 body 11
Lock with body 11.Preferably, the size of window 111 can be slightly smaller than the transparent surface 311 of lens 31
Size, to utilize the internal face at window 111 edge to abut and spacing lens 31 with lens 31.
Further, the body 11 edge near cap 12 one end is provided with multiple buckle 114, cap
12 include cover plate 121 and the projection annular coaming plate 122 on cover plate 121 medial surface, annular coaming plate 122
End be embedded in body 11, annular coaming plate 122 between multiple buckles 114, cover plate 121
The edge part protruding annular coaming plate 122 is provided with and the hole clipping 123 of buckle 114 adaptation.
In the present embodiment, locking main or its shading and locking between cap 12 and body 11
Effect, uses the mode of buckle 114 and hole clipping 123 to fix, is conducive to simplifying assembling.
Further, refer to Fig. 3 to Fig. 6, and Fig. 8, in one embodiment, will examine for convenience
The sensor surveying attachment value is fixed with host computer (such as lampblack absorber), this detection attachment value
Sensor also includes that fixed mount 4, fixed mount 4 include fixed plate 41 and the frame being connected with fixed plate 41
42, fixed plate 41 is provided with installing hole (sign), and frame 42 is consolidated around window 111 and with housing 1
Fixed connection.
In the present embodiment, screw passes installing hole, and screw-in host computer such as lampblack absorber is correspondingly arranged
Screw, can be fixed on this sensor on host computer.Preferably, fixed mount 4 is vertical with frame 42,
The quantity of installing hole is two, and frame 42 is locked on the edge of window 111 by screw.
With reference to Figure 12, the present invention also proposes a kind of lampblack absorber, and in one embodiment, this lampblack absorber 100 wraps
Include the sensor of detection attachment value, the concrete structure ginseng of the sensor 101 of this detection attachment value
According to above-described embodiment, owing to this lampblack absorber have employed all enforcement of sensor 101 of detection attachment value
Whole technical schemes of example, the most at least have the skill of the embodiment of the sensing 101 of detection attachment value
All beneficial effects that art scheme is brought, this is no longer going to repeat them.
Wherein, culinary art workbench 200 is positioned at the lower section of lampblack absorber 100, and lampblack absorber 100 includes detecting attached
The sensor 101 of thing value, display module 102 and auditory tone cues module 103, wherein, detection attachment
The sensor 101 of thing value is installed on the transparent surface 11 of the inside of lampblack absorber 100, at least lens 1 and exposes
In the inner chamber or smoke duct of lampblack absorber.The value of the attachment that display module 102 display detects,
Such as after lampblack absorber cleans, display remains in the attachment value on lens 1.Auditory tone cues module 103
During in order to reach threshold values at the value detecting attachment, user is reminded to open the cleaning procedure of lampblack absorber 100.
Wherein, this threshold values can be arranged voluntarily by user, it is also possible to arranges when lampblack absorber dispatches from the factory, does not does
Limit.
The foregoing is only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention,
Every under the inventive concept of the present invention, utilize the equivalent structure that description of the invention and accompanying drawing content are made
Conversion, or directly/be indirectly used in other relevant technical fields and be included in the patent protection model of the present invention
In enclosing.
Claims (10)
1. the circuit detecting attachment value, it is characterised in that include control circuit, infrared emission
Circuit, infrared receiving circuit and signal amplification circuit；The control end of described control circuit with described infrared
The controlled end on radio road connects, the feedback end of described control circuit and the outfan of described signal amplification circuit
Connecting, the input of described signal amplification circuit is connected with the outfan of described infrared receiving circuit；Wherein,
Described infrared transmitting circuit, for launching infrared ray to attachment to be measured；
Described infrared receiving circuit, for receiving the infrared ray of described attachment to be measured reflection and exporting therewith
The signal of telecommunication that the infra-red intensity that receives is corresponding；
Described signal amplification circuit, the signal of telecommunication for being exported by described infrared receiving circuit carries out signal and puts
Big process, and it is delivered to described control circuit；
Described control circuit, is used for controlling the work of described infrared transmitting circuit and amplifying electricity according to described signal
The signal of telecommunication of road output calculates the amount of attachment to be measured.
2. the circuit detecting attachment value as claimed in claim 1, it is characterised in that described infrared
Radiating circuit include the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the first switching tube,
One infrared transmitting tube and the second infrared transmitting tube；First end of described second resistance is described infrared emission electricity
The controlled end on road, the second end of described second resistance, the first end of described first resistance and described first open
Close the controlled end interconnection of pipe；Second end of described first resistance and the input of described first switching tube connect
Power supply, the outfan of described first switching tube, the first end of described 3rd resistance and described 4th resistance
First end interconnection；Second end of described 3rd resistance passes through described first infrared transmitting tube ground connection, and described the
Second end of four resistance passes through described second infrared transmitting tube ground connection.
3. the circuit detecting attachment value as claimed in claim 1, it is characterised in that described infrared
Receive circuit and include the 5th resistance, the 6th resistance, the 7th resistance and infrared receiving tube；Described infrared receiver
The input of pipe connects power supply, the outfan of described infrared receiving tube, the first end of described 5th resistance and
First end interconnection of described 6th resistance；Second end of described 6th resistance and the first of described 7th resistance
End connects, and described 6th resistance is the defeated of described infrared receiving circuit with the link node of described 7th resistance
Go out end；Second end of described 5th resistance and the second end ground connection of described 7th resistance.
4. the circuit detecting attachment value as claimed in claim 1, it is characterised in that described signal
Amplifying circuit is differential amplifier circuit.
5. the circuit detecting attachment value as claimed in claim 4, it is characterised in that described differential
Amplifying circuit includes the 8th resistance, the 9th resistance, the tenth resistance, the 11st resistance and operational amplifier；
First end of described 8th resistance connects power supply, the second end of described 8th resistance, described 9th resistance
First end and the first end interconnection of described tenth resistance；Second end of described tenth resistance, the described 11st
First end of resistance and the inverting input interconnection of described operational amplifier；The second of described 11st resistance
End is connected with the outfan of described operational amplifier, described 11st resistance and the company of described operational amplifier
Binding place is the outfan of described differential amplifier circuit, and the input in the same direction of described operational amplifier is described
The input of differential amplifier circuit.
6. the circuit detecting attachment value as claimed in claim 1, it is characterised in that described control
Circuit includes control chip and the first electric capacity；The input of described control chip is the anti-of described control circuit
Feedback end, the control end that control end is described control circuit of described control chip；The of described first electric capacity
The power end of one end and described control chip connects power supply, the second end of described first electric capacity and described control
The earth terminal ground connection of chip.
7. the circuit of the detection attachment value as described in claim 1 to 6 any one, its feature exists
In, the circuit of described detection attachment value also includes communication interface, and described communication interface is used for described inspection
Survey the communication between circuit and the miscellaneous equipment of attachment value.
8. the circuit detecting attachment value as claimed in claim 7, it is characterised in that described detection
Communication modes between circuit and the miscellaneous equipment of attachment value is wireless telecommunications or wire communication.
9. the sensor detecting attachment value, it is characterised in that include such as claim 1 to 8
The circuit of the detection attachment value described in any one.
10. a lampblack absorber, it is characterised in that include detecting attachment amount as claimed in claim 9
The sensor of value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610196103.9A CN105891158B (en) | 2016-03-30 | 2016-03-30 | Circuit for detecting attachment magnitude, sensor and range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610196103.9A CN105891158B (en) | 2016-03-30 | 2016-03-30 | Circuit for detecting attachment magnitude, sensor and range hood |
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| Publication Number | Publication Date |
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| CN105891158A true CN105891158A (en) | 2016-08-24 |
| CN105891158B CN105891158B (en) | 2020-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610196103.9A Active CN105891158B (en) | 2016-03-30 | 2016-03-30 | Circuit for detecting attachment magnitude, sensor and range hood |
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| CN109611909A (en) * | 2018-11-09 | 2019-04-12 | 华帝股份有限公司 | Cleaning control method of range hood |
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| CN112283775A (en) * | 2020-10-28 | 2021-01-29 | 珠海格力电器股份有限公司 | Range hood, range hood cleaning method and device and storage medium |
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| CN105891158B (en) | 2020-03-06 |
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