CN207764616U - The motion structure occlusion detection device and household electrical appliance of household electrical appliance - Google Patents
The motion structure occlusion detection device and household electrical appliance of household electrical appliance Download PDFInfo
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- CN207764616U CN207764616U CN201820200054.6U CN201820200054U CN207764616U CN 207764616 U CN207764616 U CN 207764616U CN 201820200054 U CN201820200054 U CN 201820200054U CN 207764616 U CN207764616 U CN 207764616U
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Abstract
The utility model discloses the motion structure occlusion detection devices and household electrical appliance of a kind of household electrical appliance, the motion structure occlusion detection device of the household electrical appliance includes power supply circuits unit, MCU, control circuit unit, permanent magnet, permanent magnet mounting part, sensing circuit installing component, and at least one sensing circuit unit, sensing circuit unit is fixedly connected with sensing circuit installing component, permanent magnet is fixedly connected with permanent magnet mounting part, power supply circuits unit respectively with sensing circuit unit, MCU and the connection of the power input of control circuit unit, sensing circuit unit is also electrically connected with MCU, MCU is also electrically connected through control circuit unit with controlled household electrical appliance.The utility model reduces cost, and the utility model also improves the accuracy of the occlusion detection of the motion structure to being controlled household electrical appliance.
Description
Technical field
The utility model is related to household appliance technical field more particularly to a kind of motion structure occlusion detection devices of household electrical appliance
And household electrical appliance.
Background technology
With the promotion of Household electric appliance intelligent degree, the household electrical appliance of micro computer control increasingly become the development of mainstream
Direction, most of household electrical appliance are directed to many motion structures, these motion structures are generally by electric rotating machine or linear electricity
The motion drives such as machine drive, when the motion structure of household electrical appliance is hindered because movement occur in the reasons such as dust accumulation, foreign matter or insufficient lubrication
When stagnant, a variety of consequences such as drive corruption, foreign matter damage or the damage of driver driving circuit are often brought, so as to give use
Economic loss is caused at family, or even brings personal injury.
The motion structure occlusion detection device of existing household electrical appliance is typically to be detected by following three kinds of detection methods
Whether the motion structure of household electrical appliance has occurred operation retardance：(1) retardance of motion structure is judged by multiple spot position detection
Position, the detection method are to obtain the position of moving component in motion structure by the combination of grating or magnetic grid and respective sensor
Confidence number, or believed by a series of position that mechanical limit switches etc. along direction of motion arrangement obtain the moving component
Number, judge whether the movement of motion structure is obstructed by the changing rule of position signal.The detection method has a defect that：
Grating or magnetic grid and the cost of respective sensor increase with the nearly exponential law of accuracy of detection, and sensor and grating, magnetic grid it
Between spacing need in strict accordance with requiring setting just to can guarantee corresponding accuracy of detection, and grating device therein does not bear dirty also
Dirty feature, use condition is more harsh, and security application is difficult to realize under domestic environment.
(2) judge that the blocking site of motion structure, the detection method are by ultrasonic wave, shortwave by distance measuring method
The combination of radar or laser and respective sensor obtains the position signal of moving component in motion structure, passes through position signal
Changing rule judges whether the movement of motion structure is obstructed.The detection method has a defect that：Cost is higher, and all exists
One size and the relevant most short detecting distance of cost level, i.e., can only could when distance is not less than the most short detecting distance
Using often size is smaller for household electrical appliance, it is difficult to meet the minimum range condition.
(3) judge whether the movement of motion structure is obstructed by the variation of the driving system loads of household electrical appliance, the inspection
Survey method is the signals such as loading moment and the changed power of the drive system by measuring household electrical appliance to judge household electrical appliance
Whether the movement of motion structure is obstructed.The detection method has a defect that：The signals such as loading moment and changed power usually have
There is response lag, and easily interfered by mains ripple and other circuit parameter fluctuations, so as to cause the drive of household electrical appliance
The load variation of dynamic system is poor with the motion state correlation of the motion structure of household electrical appliance, and because of the lag and error of signal
It is larger, cause the accuracy of the detection method very low.
Utility model content
The main purpose of the utility model is to provide a kind of motion structure occlusion detection devices of household electrical appliance, it is intended to drop
Low cost and raising detection accuracy.
To achieve the goals above, the utility model provides a kind of motion structure occlusion detection device of household electrical appliance, institute
The motion structure occlusion detection device for stating household electrical appliance includes power supply circuits unit, MCU, control circuit unit, permanent magnet, permanent magnetism
Body installing component, sensing circuit installing component and at least one sensing circuit unit；Wherein,
The power supply circuits unit, for providing power supply electricity for the motion structure occlusion detection device of the household electrical appliance
Pressure；
The sensing circuit unit, for obtaining the letter of the relative distance between the permanent magnet and the sensing circuit unit
Number and the relative distance signal is converted into the identifiable electric signals of the MCU；
The permanent magnet, for providing magnetic field for the permanent magnet mounting part, so that the permanent magnet mounting part is transported
The sensing circuit unit is set to generate corresponding electric signal extremely when moving close to the pre-determined distance position of the sensing circuit unit
The MCU；
The MCU, for monitoring the operating status for being controlled motion structure in household electrical appliance according to the electric signal, and when prison
When measuring the motion structure generation operation retardance, the operation work of the motion structure is controlled via the control circuit unit
Make；
The sensing circuit unit is fixedly connected with the sensing circuit installing component, the permanent magnet and the permanent magnet
Installing component is fixedly connected, the power supply circuits unit respectively with the sensing circuit unit, the MCU and the control circuit
The power input of unit connects, and the sensing circuit unit is also electrically connected with the MCU, and the MCU is also through control electricity
Road unit is electrically connected with the controlled household electrical appliance.
Preferably, the sensing circuit installing component is the non-moving parts of the controlled household electrical appliance, the permanent magnet
Installing component is the moving component in the motion structure of the controlled household electrical appliance.
Preferably, the sensing circuit unit includes Magnetic Sensor and the telecommunications for exporting the Magnetic Sensor
The filter circuit unit being filtered, the Magnetic Sensor are connect through the filter circuit unit with the MCU.
Preferably, the Magnetic Sensor is Hall effect magnetic sensor device or magneto-resistance effect magnetic sensor device.
Preferably, the motion structure occlusion detection device of the household electrical appliance further includes for the MCU and controlled household
The I/O circuit units of signal interaction between electric appliance, the I/O circuit units respectively with the MCU and the controlled household electrical appliance
Connection.
Preferably, the motion structure occlusion detection device of the household electrical appliance further includes for the fortune to the household electrical appliance
The gas gauge circuit unit that the electric energy of dynamic structure blocks detection device is managed, the gas gauge circuit unit with it is described
MCU connections.
Preferably, the motion structure occlusion detection device of the household electrical appliance further includes for showing the controlled household electric
The display circuit unit of the operating status of the motion structure of device, the display circuit unit are connect with the MCU.
In addition, to achieve the above object, the utility model also provides a kind of household electrical appliance, the household electrical appliance include as above
The motion structure occlusion detection device of the household electrical appliance.
The utility model provides a kind of motion structure occlusion detection device of household electrical appliance, the motion structure of the household electrical appliance
Occlusion detection device includes power supply circuits unit, MCU, control circuit unit, permanent magnet, permanent magnet mounting part, sensing circuit
Installing component and at least one sensing circuit unit；The power supply circuits unit, for the movement knot for the household electrical appliance
Structure occlusion detection device provides supply voltage；The sensing circuit unit, for obtaining the permanent magnet and the sensing circuit
The relative distance signal is simultaneously converted to the identifiable electric signals of the MCU by relative distance signal between unit；It is described forever
Magnet, for providing magnetic field for the permanent magnet mounting part, so that the permanent magnet mounting part is moved to close to the biography
The sensing circuit unit is set to generate corresponding electric signal to the MCU when pre-determined distance position of inductive circuit unit；It is described
MCU for monitoring the operating status for being controlled motion structure in household electrical appliance according to the electric signal, and works as and monitors the movement
When operation retardance occurs for structure, the operation work of the motion structure is controlled via the control circuit unit；The sensing electricity
Road unit is fixedly connected with the sensing circuit installing component, and the permanent magnet is fixedly connected with the permanent magnet mounting part,
The power supply circuits unit respectively with the sensing circuit unit, the power input of the MCU and the control circuit unit
Connection, the sensing circuit unit are also electrically connected with the MCU, and the MCU is also controlled through the control circuit unit with described
Household electrical appliance are electrically connected.The motion structure occlusion detection device of the utility model household electrical appliance has at low cost and detection accuracy
High advantage.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, the structure that can also be shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the function module signal of one embodiment of motion structure occlusion detection device of the utility model household electrical appliance
Figure；
Fig. 2 is the function module signal of another embodiment of motion structure occlusion detection device of the utility model household electrical appliance
Figure；
Fig. 3 is the installation of permanent magnet described in one embodiment of motion structure occlusion detection device of the utility model household electrical appliance
Component does the movement of the sensing circuit unit, sensing circuit installing component, permanent magnet, permanent magnet mounting part when linear movement
Structural schematic diagram；
Fig. 4 is the peace of permanent magnet described in another embodiment of motion structure occlusion detection device of the utility model household electrical appliance
Dress component does the fortune of the sensing circuit unit, sensing circuit installing component, permanent magnet, permanent magnet mounting part when circular motion
Dynamic structural schematic diagram；
Fig. 5 is the installation of permanent magnet described in one embodiment of motion structure occlusion detection device of the utility model household electrical appliance
Component does the output signal Sout of the sensing circuit unit and the sensing circuit unit to the permanent magnet when linear movement
Distance x between relation curve schematic diagram；
Fig. 6 is the installation of permanent magnet described in one embodiment of motion structure occlusion detection device of the utility model household electrical appliance
Component does the wayside signaling change rate Sv of the output signal Sout of the sensing circuit unit and the sensing electricity when linear movement
Road unit is to the relation curve schematic diagram between the distance x of the permanent magnet；
When Fig. 7 is that one embodiment of motion structure occlusion detection device of the utility model household electrical appliance is applied to household electrical appliance
System function module schematic diagram.
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Specific implementation mode
It should be appreciated that specific embodiment described herein is only used to explain the utility model, it is not used to limit this
Utility model.
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that if the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, without
It can be interpreted as indicating or implying its relative importance or implicitly indicate the quantity of indicated technical characteristic.It defines as a result,
The feature of " first ", " second " can explicitly or implicitly include at least one of the features.In addition, between each embodiment
Technical solution can be combined with each other, but must can be implemented as basis with those of ordinary skill in the art, work as technical solution
Combination there is conflicting or cannot achieve when and will be understood that the combination of this technical solution is not present, it is also not new in this practicality
Within the protection domain that type requires.
The utility model provides a kind of motion structure occlusion detection device of household electrical appliance, and Fig. 1 is the utility model household
The high-level schematic functional block diagram of one embodiment of motion structure occlusion detection device of electric appliance, referring to Fig.1, in the present embodiment, the household
The motion structure occlusion detection device of electric appliance includes sensing circuit unit 101, sensing circuit installing component 102, permanent magnet installation
Component 103, permanent magnet 104, MCU 105, control circuit unit 106 and power supply circuits unit 107.
Wherein, the power supply circuits unit 107, for the motion structure occlusion detection device for the present embodiment household electrical appliance
Supply voltage is provided；
The sensing circuit unit 101, for obtaining between the permanent magnet 104 and the sensing circuit unit 101
The relative distance signal is simultaneously converted to 105 identifiable electric signals of the MCU by relative distance signal；
The permanent magnet 104, for providing magnetic field for the permanent magnet mounting part 103, so that the permanent magnet is installed
Component 103 generates the sensing circuit unit 101 when moving to close to the pre-determined distance position of the sensing circuit unit 101
Corresponding electric signal is to the MCU 105；
The MCU 105, the electric signal monitoring for being exported according to the sensing circuit unit 101 are controlled household electric
The operating status of the motion structure of device (not shown), and hindered when monitoring that the motion structure of the controlled household electrical appliance occurs to run
When stagnant, the operation work of the motion structure of the controlled household electrical appliance is controlled via the control circuit unit 106.
In the present embodiment, the sensing circuit unit 101 is fixedly connected with the sensing circuit installing component 102, described
Permanent magnet 104 is fixedly connected with the permanent magnet mounting part 103, and the power supply circuits unit 107 is electric with the sensing respectively
The power input of road unit 101, the MCU 105 and the control circuit unit 106 connects, the sensing circuit unit
101 are also electrically connected with the MCU 105, and the MCU 105 is also through the control circuit unit 106 and the controlled household electrical appliance
Electrical connection.
In the present embodiment, the sensing circuit installing component 102 is the non-moving parts of the controlled household electrical appliance, example
Such as, select the fixed frame of the controlled household electrical appliance as the sensing circuit installing component 102.It is described in the present embodiment
Permanent magnet mounting part 103 is the moving component in the motion structure of the controlled household electrical appliance, for example, the relatively described quilt of selection
The moving component of the frame movement of household electrical appliance is controlled as the permanent magnet mounting part 103.
In the present embodiment, the sensing circuit unit 101 is including Magnetic Sensor (not shown) and for sensing the magnetic
The filter circuit unit (not shown) that the telecommunications of device output is filtered, the Magnetic Sensor is through the filter circuit
Unit is connect with the MCU 105.
In the present embodiment, the Magnetic Sensor is Hall effect magnetic sensor device or magneto-resistance effect magnetic sensor device.
In the present embodiment, the permanent magnet 104 is for permanent-magnet material or with other to magnetic field or magnetic line of force Constrained or reinforcing
Etc. the components of functions be composed.
It is understood that in the present embodiment, the MCU 105 can borrow the existing MCU of other equipment, can also be
The motion structure occlusion detection dress of the present embodiment household electrical appliance centers an independent MCU.Also, in the present embodiment, institute
Stating the quantity of sensing circuit unit 101 can be configured according to actual conditions situation, for example, a sensing circuit can be arranged
Unit 101, can also be arranged multiple sensing circuit units 101, and the present embodiment is only provided with a sensing circuit unit 101.
Further, with reference to Fig. 2, the motion structure occlusion detection device of the present embodiment household electrical appliance is in above-described embodiment
On the basis of further include I/O circuit units 108 for signal interaction between the MCU 105 and controlled household electrical appliance, the I/O
Circuit unit 108 is connect with the MCU 105 and the controlled household electrical appliance respectively.
Further, the motion structure occlusion detection device of the present embodiment household electrical appliance further includes for the present embodiment man
The gas gauge circuit unit 109 that the electric energy of the motion structure occlusion detection device of electrical appliance is managed, the energy management
Circuit unit 109 is connect with the MCU 105.
Further, the motion structure occlusion detection device of the present embodiment household electrical appliance further includes for the controlled family
The display circuit unit 110 that the operating status of the motion structure of electrical appliance is shown, the display circuit unit 110 with it is described
The connections of MCU 105.
Fig. 3 is the installation of permanent magnet described in one embodiment of motion structure occlusion detection device of the utility model household electrical appliance
Component does the movement of the sensing circuit unit, sensing circuit installing component, permanent magnet, permanent magnet mounting part when linear movement
Structural schematic diagram, with reference to Fig. 3, the present embodiment with the direction of linear motion of the permanent magnet mounting part 103 for the directions x, in figure
X0 is the position coordinates of the sensing circuit unit 101, and x1 is the motion structure of controlled household electrical appliance in a certain motion process
The position coordinates of the permanent magnet 104, x2 are the maximum value of the position coordinates of the permanent magnet 104, and L1 is controlled household electrical appliance
The motion structure permanent magnet 104 described in a certain motion process and the sensing circuit unit 101 spacing (i.e. L1=x1-
X0), L2 is the position coordinates of the permanent magnet 104 permanent magnet 104 and sensing circuit unit corresponding when being maximum value
101 spacing (i.e. L2=x2-x0).
Fig. 4 is the peace of permanent magnet described in another embodiment of motion structure occlusion detection device of the utility model household electrical appliance
Dress component does the fortune of the sensing circuit unit, sensing circuit installing component, permanent magnet, permanent magnet mounting part when circular motion
Dynamic structural schematic diagram, with reference to Fig. 4, A is the angle value of the sensing circuit unit 101 in figure, and B is the movement of controlled household electrical appliance
Angle value of the structure permanent magnet 104 described in a certain motion process relative to the sensing circuit unit 101, C be it is described forever
Maximal angle value of the magnet 104 relative to the sensing circuit unit 101, L1 are the motion structure of controlled household electrical appliance a certain
The spacing of permanent magnet 104 described in motion process and the sensing circuit unit 101, L2 are the permanent magnet 104 relative to institute
Between the angle value for stating sensing circuit unit 101 permanent magnet 104 and sensing circuit unit 101 corresponding when being maximum value
Away from.
Fig. 5 is the installation of permanent magnet described in one embodiment of motion structure occlusion detection device of the utility model household electrical appliance
Component does the output signal Sout of the sensing circuit unit and the sensing circuit unit to the permanent magnet when linear movement
Distance x between relation curve schematic diagram, with reference to Fig. 5, it is closest to be that the permanent magnet mounting part 103 moves to by S0 in figure
The sensing circuit unit 101 when the sensing circuit unit 101 (namely institute's permanent magnet 104 is moved to closest to the sensing
Circuit unit 101) when output signal, it should be noted that the x0 in the present embodiment represents the permanent magnet 104 and moves to most
Position when close to the sensing circuit unit 101.In the present embodiment, S1 is that the permanent magnet 104 moves to coordinate position and is
The output signal of the sensing circuit unit 101 when x1, St are that the permanent magnet 104 moves to biography when coordinate position is xt
The output signal of inductive circuit unit 101, S2 are that the permanent magnet 104 moves to sensing circuit unit when coordinate position is x2
101 output signal, in the present embodiment, it is assumed that x3 is the permanent magnetism of 101 effective output signal of the sensing circuit unit
The maximum value of the position coordinates of body 104, S3 is the coordinate position of the permanent magnet 104 sensing circuit unit 101 when being x3
Output signal.In the present embodiment, it is assumed that x4 be the sensing circuit unit 101 have can detecting signal the permanent magnet 104
Position coordinates maximum value, S4 is that the permanent magnet 104 moves to the sensing circuit unit 101 when coordinate position is x4
Output signal.
Fig. 6 is the installation of permanent magnet described in one embodiment of motion structure occlusion detection device of the utility model household electrical appliance
Component does the wayside signaling change rate Sv of the output signal Sout of the sensing circuit unit and the sensing electricity when linear movement
Road unit is to the relation curve schematic diagram between the distance x of the permanent magnet, with reference to Fig. 6, present embodiment assumes that the permanent magnet
The 104 sensing circuit units 101 relatively move with uniform velocity, and D is that the permanent magnet mounting part 103 does linear movement in figure
The section of the output signal Sout of the sensing circuit unit 101 when (namely the movement of the permanent magnet 104 is linear movement)
For change rate signal Sv with the sensing circuit unit 101 to the relation curve between 104 distance x of the permanent magnet, Sv1 is institute
It states permanent magnet 104 and passes through x3And x2The wayside signaling change rate that Shi Suoshu sensing circuits unit 101 exports, Sv2 are preset section
Dividing value is got under change rate signal, Δ Svdn is the difference of the valley value of the Sv1 and curve D, and Δ Svup is Sv1 and the curve
The difference of the crest value of D.
Together referring to figure 5 and figure 6, in the present embodiment, the sections x0-x3 are the near-linear area of curve D, and x3-x4 is curve D's
Curve D enters dead space after decay area, x4.In the present embodiment, in order to improve 101 output signal of sensing circuit unit
Reliability, the present embodiment select coordinate position x2 for the maximum value of the position coordinates of the permanent magnet 104, and x2 is between x1 and x3
Some suitable be worth.In the present embodiment, the spacing range of x3 and x2 is 0mm-20mm, it is preferable that the spacing of x3 and x2 is
10mm。
When Fig. 7 is that one embodiment of motion structure occlusion detection device of the utility model household electrical appliance is applied to household electrical appliance
System function module schematic diagram, together with reference to Fig. 2 and Fig. 7, the motion structure occlusion detection device of the present embodiment household electrical appliance
I/O circuit units 108 in 100 are connect with the I/O units 201 in controlled household electrical appliance 200.In the present embodiment, when the family
The motion structure occlusion detection device 100 of electrical appliance detects that the motion structure (not shown) of controlled household electrical appliance 200 hinders
When stagnant situation (when operation retardance occurs for the motion structure of the controlled household electrical appliance 200), the movement knot of the household electrical appliance
Structure occlusion detection device 100 sends out motion structure and is obstructed hysteresis signal, which is obstructed hysteresis signal via the I/O circuits list
I/O units 201 in member 108 and the controlled household electrical appliance 200 are transmitted to the control unit of the controlled household electrical appliance 200
202, when described control unit 202 receive above-mentioned motion structure be obstructed hysteresis signal when, described control unit 202 controls the quilt
Control the relevant work of the function devices such as motor, light, display, the relay in household electrical appliance 200.
Together referring to Fig.1, Fig. 3, Fig. 5, Fig. 6 and Fig. 7, below with the relatively described sensing circuit unit of the permanent magnet 104
101 do the operation principle for the motion structure occlusion detection device that the present embodiment household electrical appliance are described for linear uniform motion,
Its operation principle is described in detail below：In the present embodiment, it is assumed that the permanent magnet 104 comes at the uniform velocity when moving to the positions x2
Motion state, therefore must assure that between the two when designing the structure of the sensing circuit unit 101 and the permanent magnet 104
Spacing be to have met the requirement that relative velocity between the two is uniform motion, institute when L2 (when linear movement, x2=L2)
Certain limitation is must satisfy with the movement starting distance Lstart of the two, specifically, in the present embodiment, the movement of the two originates
Distance Lstart >=L2+Lts, wherein L2 is the permanent magnet 104 when to be located at position coordinates be maximum value x2, the permanent magnet
104 with the spacing of the sensing circuit unit 101, Lts be the permanent magnet 104 relative to the sensing circuit unit 101
Required distance when movement velocity changes to more constant.In the present embodiment, the permanent magnet 104 and the sensing circuit list
The value range of the spacing L2 of member 101 is 10mm-60mm, fortune of the permanent magnet 104 relative to the sensing circuit unit 101
Dynamic velocity variations to it is more constant when required distance Lts then need according to the motors of controlled household electrical appliance and transmission system
Gap LgAnd return difference LrgEtc. the actual measured values of parameters calculate, specifically, Lts=Lg+Lrg+Ls, wherein LsJoin for redundancy
It counts, in the present embodiment, the nuisance parameter LsValue range be 0mm-6mm.
The motion structure occlusion detection device of the present embodiment household electrical appliance, when the permanent magnet 104 is to the sensing circuit
When unit 101 does linear movement, when the output signal Sout of the sensing circuit unit 101 reaches preset signals threshold value S3, institute
It states MCU 105 and starts timing, and record S3 values and the position coordinates x3 values of the permanent magnet corresponding at this time 104, when described
The output signal Sout of sensing circuit unit 101 judges that 104 unsuccessful movement of the permanent magnet arrives when reaching preset signals threshold value S2
Up at position coordinates x2, and calculates the permanent magnet 104 and move to the x2 required time differences from x3 as Δ t3-2, wayside signaling become
Change amount Δ S3-2(ΔS3-2=S2-S3) and wayside signaling change rate Sv1 (Sv1=Δs S3-2/Δt3-2), the MCU at this time
105 judgements detect permanent magnet 104.
It is understood that when the output signal Sout of the sensing circuit unit 101 reaches preset signals threshold value S3,
The components such as the timer entrained by 105 inside MCU may be used and carry out timing, furthermore, it is desirable to which explanation, described in order to ensure
Wayside signaling changing value Δ S3-2Validity, the present embodiment must assure that 104 unsuccessful movement of the permanent magnet reach x3 at when
The requirement that relative velocity is uniform motion is met.
The MCU 105 in the present embodiment is after being calculated the wayside signaling change rate Sv1, every preset time
Section Δ t calculates a wayside signaling change rate Svt=Δs St/ Δ t, wherein Δ StFor the sensing in preset time period Δ t
The variable quantity of the output signal of circuit unit 101 becomes the wayside signaling after wayside signaling change rate Svt is calculated
Rate Svt is compared with more dividing value Sv2 under preset wayside signaling change rate, once meet Svt<When Sv2, then area is can determine that
Between change rate signal Svt have occurred down and cross the border, and the duration Δ t to crossing the border under thisSvdnCarry out timing, the duration Δ to cross the border instantly
tSvdnMore than preset duration Δ tadjWhen, i.e., as Δ tSvdn＞ Δs tadjWhen, then the judgements of the MCU 105 are controlled the fortune of household electrical appliance
Retardance situation has occurred in the operation of dynamic structure.
It is understood that the present embodiment can be by adjusting more dividing value Sv2 under the preset wayside signaling change rate
With it is described under cross the border duration Δ tSvdnThe size of value change the sensitivity of the present embodiment occlusion detection.Also, the present embodiment
In, when the permanent magnet 104 is in opposite both direction operation, the wayside signaling change rate Sv1 and the preset duration
ΔtadjValue can be identical respectively, can also respectively different or part it is identical, part is different.
If the present embodiment MCU 105 detects that operation resistance occurs for the motion structure of controlled household electrical appliance in t moment
When stagnant, calculate and record the sensing unit 101 in the output signal St of t moment, the position xt of the corresponding permanent magnet 104
And wayside signaling change rate Svt, and export motion structure and be obstructed hysteresis signal to the control circuit unit 106, when the control
Circuit unit 106 processed receive the motion structure be obstructed hysteresis signal when, the permanent magnetism is controlled by the control circuit unit 106
Body 104 is moved according to preset kinematic parameter along second direction of motion opposite with current first direction of motion, when the permanent magnetism
Body 104 controls the permanent magnet 104 and is moved again along described first after second direction of motion moves the first pre-determined distance
Direction continues to move, and suitably adjusts above-mentioned each kinematic parameter.
It is understood that in the present embodiment, the appropriate kinematic parameter that adjusts includes that adjustment member kinematic parameter or adjustment are complete
The adjustment of portion's kinematic parameter, parameter can adjust some special parameter according to preset adjustable strategies, and such as described first is default
The size that distance can change first pre-determined distance according to preset adjustable strategies table (will after such as counter motion each time
First pre-determined distance extends Δ L length or uses the first different pre-determined distances according to number of inversion by tabling look-up), or change
Become movement velocity when first direction of motion movement before returning after each counter motion (such as counter motion each time the
When first direction of motion after one pre-determined distance again before edge moves, first direction of motion before edge is moved into and is at the uniform velocity transported
The speed (also referred to as return speed) of dynamic section increases Δ Sv1Or different return movement speed is used according to number of inversion by tabling look-up
Degree), or by adjusting got under preset wayside signaling change rate dividing value Sv2 and it is described under cross the border duration Δ tSvdnValue size
To change the present embodiment to the sensitivity of the occlusion detection of the motion structure (as after the first pre-determined distance of counter motion each time
When first direction of motion before edge moves again, increase more dividing value Sv2 under the preset wayside signaling change rate, or subtract
It is small it is described under cross the border duration Δ tSvdn, or suitably subtract while more dividing value Sv2 under the increase preset wayside signaling change rate
It is small it is described under cross the border duration Δ tSvdn) etc..
Since the present embodiment can always exist the occlusion detection for being controlled the motion structure of household electrical appliance, above-mentioned resistance
Stagnant detection process can move in circles always, can also recycle rear forced termination several times.
Further it will be understood that the present embodiment in addition to can in various household electrical appliance motion structure (such as door-plate,
Lifting platform and certain valves) operation retardance situation be detected outer, the present embodiment can be used for the needs of other industry
The scene that the operation retardance situation of motion structure is monitored.
The scheme cost of the motion structure occlusion detection device of the present embodiment household electrical appliance is relatively low, and due to the present embodiment
Detection scheme is non-contact detecting, therefore the present embodiment has the advantages that anti-pollution is good；Also, the present embodiment is to fit-up gap
Equal structural requirements are insensitive, are applicable in the application environment of household electrical appliance completely, and the present embodiment can also be horizontal in current technology controlling and process
Under reach preferable detection result；Meanwhile the present embodiment is without the limitation of most short detecting distance, and can be in gamut scope
Ensure the sensing circuit unit 101 output signal Sout and the sensing circuit unit 101 between the permanent magnet 104
Away from x is linear or preferable linear relationship, therefore, the present embodiment has higher accuracy to the occlusion detection of motion structure.
The utility model also provides a kind of household electrical appliance, which includes the motion structure occlusion detection of household electrical appliance
The structure of device, the motion structure occlusion detection device of the household electrical appliance can refer to above-described embodiment, and details are not described herein.Reason institute
Should, since the household electrical appliance of the present embodiment use the technical side of the motion structure occlusion detection device of above-mentioned household electrical appliance
Case, therefore the advantageous effect that the household electrical appliance have the motion structure occlusion detection device of above-mentioned household electrical appliance all.
It these are only the preferred embodiment of the utility model, it does not limit the scope of the patent of the present invention, every
Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in
Other related technical areas are equally included in the patent within the scope of the utility model.
Claims (8)
1. a kind of motion structure occlusion detection device of household electrical appliance, which is characterized in that the motion structure of the household electrical appliance hinders
Stagnant detection device includes power supply circuits unit, MCU, control circuit unit, permanent magnet, permanent magnet mounting part, sensing circuit peace
Fill component and at least one sensing circuit unit；Wherein,
The power supply circuits unit, for providing supply voltage for the motion structure occlusion detection device of the household electrical appliance；
The sensing circuit unit, for obtaining the relative distance signal between the permanent magnet and the sensing circuit unit simultaneously
The relative distance signal is converted into the identifiable electric signals of the MCU；
The permanent magnet, for providing magnetic field for the permanent magnet mounting part, so that the permanent magnet mounting part moves to
Close to the sensing circuit unit pre-determined distance position when so that the sensing circuit unit is generated corresponding electric signal to described
MCU；
The MCU for monitoring the operating status for being controlled motion structure in household electrical appliance according to the electric signal, and works as and monitors
When operation retardance occurs for the motion structure, the operation work of the motion structure is controlled via the control circuit unit；
The sensing circuit unit is fixedly connected with the sensing circuit installing component, and the permanent magnet is installed with the permanent magnet
Component is fixedly connected, the power supply circuits unit respectively with the sensing circuit unit, the MCU and the control circuit unit
Power input connection, the sensing circuit unit is also electrically connected with the MCU, and the MCU is also through the control circuit list
It is first to be electrically connected with the controlled household electrical appliance.
2. the motion structure occlusion detection device of household electrical appliance as described in claim 1, which is characterized in that the sensing circuit
Installing component is the non-moving parts of the controlled household electrical appliance, and the permanent magnet mounting part is the controlled household electrical appliance
Moving component in motion structure.
3. the motion structure occlusion detection device of household electrical appliance as claimed in claim 2, which is characterized in that the sensing circuit
Unit includes Magnetic Sensor and the filter circuit unit that the telecommunications for exporting the Magnetic Sensor is filtered,
The Magnetic Sensor is connect through the filter circuit unit with the MCU.
4. the motion structure occlusion detection device of household electrical appliance as claimed in claim 3, which is characterized in that the Magnetic Sensor
For Hall effect magnetic sensor device or magneto-resistance effect magnetic sensor device.
5. the motion structure occlusion detection device of household electrical appliance according to any one of claims 1 to 4, which is characterized in that
The motion structure occlusion detection device of the household electrical appliance further includes for signal interaction between the MCU and controlled household electrical appliance
I/O circuit units, the I/O circuit units connect with the MCU and the controlled household electrical appliance respectively.
6. the motion structure occlusion detection device of household electrical appliance as claimed in claim 5, which is characterized in that the household electrical appliance
Motion structure occlusion detection device further include for the motion structure occlusion detection device to the household electrical appliance electric energy into
The gas gauge circuit unit of row management, the gas gauge circuit unit are connect with the MCU.
7. the motion structure occlusion detection device of household electrical appliance as claimed in claim 6, which is characterized in that the household electrical appliance
Motion structure occlusion detection device further include motion structure for showing the controlled household electrical appliance operating status it is aobvious
Show that circuit unit, the display circuit unit are connect with the MCU.
8. a kind of household electrical appliance, which is characterized in that the household electrical appliance include the household described in any one of claim 1 to 7
The motion structure occlusion detection device of electric appliance.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820200054.6U CN207764616U (en) | 2018-02-05 | 2018-02-05 | The motion structure occlusion detection device and household electrical appliance of household electrical appliance |
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| CN201820200054.6U CN207764616U (en) | 2018-02-05 | 2018-02-05 | The motion structure occlusion detection device and household electrical appliance of household electrical appliance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108227589A (en) * | 2018-02-05 | 2018-06-29 | 芜湖美智空调设备有限公司 | Motion structure occlusion detection device, method and the household electrical appliance of household electrical appliance |
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2018
- 2018-02-05 CN CN201820200054.6U patent/CN207764616U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108227589A (en) * | 2018-02-05 | 2018-06-29 | 芜湖美智空调设备有限公司 | Motion structure occlusion detection device, method and the household electrical appliance of household electrical appliance |
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