CN102426267A - Rotation detection device and engineering machinery - Google Patents
Rotation detection device and engineering machinery Download PDFInfo
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- CN102426267A CN102426267A CN2011103050992A CN201110305099A CN102426267A CN 102426267 A CN102426267 A CN 102426267A CN 2011103050992 A CN2011103050992 A CN 2011103050992A CN 201110305099 A CN201110305099 A CN 201110305099A CN 102426267 A CN102426267 A CN 102426267A
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Abstract
The invention discloses a rotation detection device and engineering machinery. The rotation detection device comprises a sensing element, a proximity switch element and a detection module, wherein the sensing element is arranged on a rotating member to be detected, can rotate along with the rotating member and comprises a first sensing part, a second sensing part and a connection part; the connection part is connected between the first sensing part and the second sensing part; the proximity switch element is arranged on one side of rotation circumference of the rotating member and can sequentially generate different sensing signals with the first sensing part and the second sensing part; the detection module is connected to the proximity switch element and is used for receiving the sensing signal transmitted by the proximity switch element, processing and outputting a corresponding detection result. The rotation detection device and the engineering machinery provided by the invention can realize rotation detection of the rotating member with simple structures and low cost and guarantee a reliable detection result.
Description
Technical field
The present invention relates to the detection of tumbler, particularly a kind of rotation detecting device and engineering machinery.
Background technology
In the actual job, engineering machinery often need detect the rotation situation of the tumbler that itself is provided with in various occasions, and more commonly rotation direction and the rotating speed to cylindrical shape or disc tumbler detects, for example the churn of trucd mixer.
With the rotating disk is example, when detecting the rotation situation of rotating disk in the prior art, and general three (or more than three) sensing elements of installation at unequal-interval on the rotating disk; As shown in Figure 1; It detects synoptic diagram for the prior art dial rotation, and when dial rotation, three sensing elements are in turn through being located at the sensor of rotating disk one side; Sensor goes out the time T 1 between first sensing element to the second sensing element; And the time T 2 between three sensing elements of second sensing element to the, relatively the size of T1 and T2 promptly can be judged the direction of dial rotation, the rotating speed of rotating disk also can measure according to the distance and the rotation time of sensing element simultaneously; But this scheme need be at the sensing element of installing on the measurand more than three or three; More complicated is installed, and cost is higher, and when the rotary speed instability, possibly cause and turn to misjudgment.
Other class methods are that a sensing element only is installed on tumbler; And the detection chip and the testing circuit of two sensors and special are set at Sensor section; Judge rotation direction through two sensor sensings to the time order and function of sensing element; This kind scheme complex circuit designs, cost is higher relatively.
Just disclose a kind of near formula motor rotation direction detecting devices like the CN200620040769 patent; This technical scheme is provided with a magnetic patch on round turntable; And at other two Hall elements and a series of testing circuit of being provided with of rotating disk; And there is certain requirement the position that is provided with of two Hall elements, and magnetic patch is realized rotating through two Hall elements with the rotating disk rotation and detected.The defective of this technical scheme is, must use two special-purpose Hall elements, and cost is higher, and needs to design the specific position that is provided with, and testing circuit is more complicated also.
In view of the foregoing, the design people borrows its technical experience of association area and abundant professional knowledge for many years, and constantly research and development improve, and through a large amount of practical proofs, have proposed the technical scheme of rotation detecting device of the present invention and engineering machinery.
Summary of the invention
The object of the present invention is to provide a kind of rotation detecting device, simple in structure, cost is low, and testing result is reliable.
Another object of the present invention is to provide a kind of engineering machinery, have above-mentioned rotation detecting device, just can realize that with simple structure and less cost the rotation of tumbler detects.
To achieve these goals; The invention provides a kind of rotation detecting device; Comprise: sensing element, be located on the tumbler to be measured, can rotate with said tumbler; Said sensing element comprises first induction part, second induction part and connecting portion, and said connecting portion is connected between said first induction part and second induction part; Near on-off element, be located at the side that said tumbler rotates circumference, saidly can successively produce different induced signals with said first induction part and second induction part near on-off element; Detection module is connected in saidly near on-off element and receive the induced signal of its transmission, handles also output corresponding detection result.
Above-mentioned rotation detecting device, wherein, the induction length of said first induction part is greater than said second induction part, and the duration of the said induced signal that produces near on-off element and said first induction part is greater than said second induction part.
Above-mentioned rotation detecting device, wherein, the induction of said first induction part is greater than said second induction part, and the intensity of the said induced signal that produces near on-off element and said first induction part is greater than said second induction part.
Above-mentioned rotation detecting device, wherein, said connecting portion also has inducing function, and the induction of said connecting portion is different from said first induction part and second induction part.
Above-mentioned rotation detecting device; Wherein, The said induced signal that produces near on-off element is a pulse signal, said can basis and the sensitive time length of said first induction part, second induction part near on-off element, and the corresponding duration length different pulse signal that produces; Perhaps, said can basis and the induction size of said first induction part, second induction part, connecting portion near on-off element, and the corresponding pulse signal that varies in size that produces.
Above-mentioned rotation detecting device, wherein, said sensing element is a strip, it is along the tangential direction setting of the rotation circumference of said tumbler.
Above-mentioned rotation detecting device, wherein, said tumbler is a rotating disk, and said sensing element is arranged on the said rotating disk near the circumferential edges place, and said sensing element is provided with along said rotating disk tangent to periphery direction.
Above-mentioned rotation detecting device, wherein, said sensing element also comprises a fixed leg, is fixed in said connecting portion below, offers fixed orifice on the said tumbler, said fixed leg is fixed in the said fixed orifice, makes said sensing element be fixed in said tumbler.
To achieve these goals; The invention provides a kind of rotation detecting device, comprising: sensing element, be located on the tumbler to be measured; Can rotate with said tumbler; Said sensing element comprises first induction part and second induction part, and said first induction part connects said second induction part, and said first induction part has different inductions with second induction part; Near on-off element, be located at the side that said tumbler rotates circumference, saidly can produce the different induced signal of intensity with said first induction part and second induction part near on-off element; Detection module is connected in saidly near on-off element and receive the induced signal of its transmission, handles also output corresponding detection result.
To achieve these goals, the present invention also provides a kind of engineering machinery, comprising: tumbler; Be used to detect the rotation detecting device of said tumbler rotary state, said rotation detecting device is above-mentioned rotation detecting device.
From the above, rotation detecting device of the present invention and engineering machinery have advantage and characteristics:
1, rotation detecting device of the present invention only needs a general sensing element near an on-off element and a special use can realize the detection of rotary state; Need not in the prior art than the expensive dedicated sensor; Make whole apparatus structure simple, and cost reduce.
2, rotation detecting device testing result of the present invention is reliable; Special construction design through special-purpose sensing element; The rotation circumference that its length relatively rotates part is very little; Can be similar to the speed of thinking when the sensing element process is near switch is at the uniform velocity, turns to the judgement signal accurately and reliably thereby when tumbler is non-uniform rotation, also can draw.
3, rotation detecting device of the present invention can be judged through the power of pulse signal and turns to, and through the sensing element structural design of special use, can make tumbler turn to detection to break away from the restriction of rotation period fully.
4, rotation detecting device of the present invention and engineering machinery can realize that the rotary state of tumbler detects with simple structure and less cost, and can calculate the rotating number of turns and rotating cycle.
Description of drawings
Following accompanying drawing only is intended to the present invention is done schematic illustration and explanation, not delimit the scope of the invention
Fig. 1 detects synoptic diagram for the prior art dial rotation;
Fig. 2 is the rotation detecting device first example structure synoptic diagram of the present invention;
Fig. 3 is the rotation detecting device first embodiment sensing element structural representation of the present invention;
Fig. 4 is the rotation detecting device first embodiment inductive impulse signal schematic representation of the present invention;
Fig. 5 is the rotation detecting device second example structure synoptic diagram of the present invention;
Fig. 6 is the rotation detecting device second embodiment inductive impulse signal schematic representation of the present invention;
Fig. 7 improves inductive impulse signal schematic representation afterwards for rotation detecting device second embodiment of the present invention;
Fig. 8 is rotation detecting device the 3rd an example structure synoptic diagram of the present invention;
Fig. 9 is rotation detecting device the 3rd an embodiment inductive impulse signal schematic representation of the present invention.
The main element label declaration:
10 tumblers
1 sensing element
11 first induction parts
12 second induction parts
13 connecting portions
14 fixed legs
2 near on-off element
21 fixed supports
3 detection modules
31 first pulse signals
32 second pulse signals
33 the 3rd pulse signals
L1, L2 length
T1, T2, T3 time
Embodiment
To understand in order technical characterictic of the present invention, purpose and effect being had more clearly, contrast description of drawings embodiment of the present invention, but it to be merely preferred embodiment at present, be not used for limiting essential scope of the present invention.
First embodiment:
Please refer to Fig. 2 and Fig. 3, wherein Fig. 2 is the rotation detecting device first example structure synoptic diagram of the present invention, and Fig. 3 is the rotation detecting device first embodiment sensing element structural representation of the present invention; As shown in the figure, rotation detecting device of the present invention mainly comprises: sensing element 1 is arranged on the tumbler 10; Can rotate with tumbler 10, tumbler 10 is to be detected, and sensing element 1 comprises first induction part 11 and second induction part 12 again; Link to each other by a junction 13 between first induction part 11 and second induction part 12; Connecting portion 13 does not have inducing function, belongs to non-sensing element, and first induction part 11 has different induction length with second induction part 12; In the present embodiment, the induction length of first induction part 11 is greater than second induction part 12; Near on-off element 2; Be located at the side that tumbler 10 rotates circumference; Adjoining with tumbler 10; Can produce inductive effects and produce induced signal with the sensing element that rotates with tumbler 10 1, can successively produce the induced signal of different durations with first, second induction part of different induction length; Detection module 3 is connected near on-off element 2, receives the induced signal that transmits near on-off element 2, handles and export the testing result of the corresponding induced signal that is received.
Sensing element 1 is used for and the generation induced signal that interacts near on-off element 2, and sensing element 1 together rotates with tumbler 10, and sensing element 1 preferably is provided with near the slewing circle circumferential edges of tumbler 10.Among the present invention program, the rotation circumference that the length of sensing element 1 relatively rotates part 10 is very little, so even if tumbler 10 is to do non-uniform rotation, also can be similar to the speed of thinking when sensing element 1 process is near on-off element 2 is at the uniform velocity.When sensing element 1 turn to near on-off element 2 near the time; Produce induced signal; That is to say that sensing element 1 is within the distance of reaction near on-off element 2 at this moment; But also should not be provided with near on-off element 2 with tumbler 10 too near, in order to avoid rotate when tilting and bump when tumbler 10 near on-off element 2.In the present embodiment, tumbler 10 is a rotating disk, and sensing element 1 is arranged on the rotating disk near peripheral circumferential edge.
Be arranged at the side that tumbler 10 rotates circumference near on-off element 2; It can be through fixed support 21 is set and realizes fixing; Can produce induced signal with sensing element 1 effect near on-off element 2; For example: can be magnetic inductive near switch near on-off element 2,1 of sensing element is the Magnetic Induction element; Perhaps can be capacitive approach switch near on-off element 2, sensing element 1 then is an earth element; Perhaps can be photo-electric near switch near on-off element 2, sensing element 1 then is a photoinduction element, near on-off element 2 and sensing element 1 other multiple combinations can be arranged also, can be according to the actual conditions conversion.
Induced signal near on-off element 2 can be pulse signal, specifically, and near the sensitive time length of on-off element 2 bases with first, second induction part, and corresponding duration different pulse signal, i.e. the pulsewidth different pulse signal of producing; Perhaps, near the size of on-off element 2 bases with first, second induction part induction, and the corresponding pulse signal that varies in size that produces; As shown in Figure 4; It is the inductive impulse signal schematic representation of rotation detecting device first embodiment of the present invention, and first pulse signal, 31 corresponding first induction parts 11 rotate process near near the on-off element 2, and second pulse signal, 32 corresponding second induction parts 12 rotate process near near the on-off element 2; From the above mentioned; The induction length of first induction part 11 is greater than second induction part 12, thus the time T 1 that first pulse signal 31 continues greater than the duration T 2 of second pulse signal 32, and middle connecting portion 13 is not owing to have inductive effects; So will not produce pulse signal, so there is the T3 time period of pulse-free signal between first pulse signal 31 and second pulse signal 32.
The simple application of first embodiment of the invention is described below in conjunction with Fig. 1 to Fig. 4; As stated; When tumbler 10 clockwise rotates; First induction part 11 of sensing element and second induction part 12 produce first pulse signal 31 and second pulse signal 32, and the duration T 1 of first pulse signal 31 are greater than the duration T 2 of second pulse signal 32 successively through near on-off element 2.What detection module 3 received so is that first pulse signal 31 produces prior to second pulse signal 32, and has certain time interval T3 between two pulse signals, for clockwise rotating, exports the relevant detection result with regard to the decidable tumbler; Otherwise; If what detection module 3 received is that second pulse signal 32 produces prior to first pulse signal 31, then the decidable tumbler is for rotating counterclockwise, certainly; Above-mentioned decision structure need have a prerequisite; Be after detection module is received the pulse combined signal of " height-low-Gao ", should guarantee T1, T2, T3 sum corresponding when after this low level time rotates greater than the tumbler minimum speed, thereby can guarantee that measured " height-low-Gao " composite signal is that tumbler rotates measured complete signal in all cycle; Rather than first pulse signal in two cycles of the continuous rotation of tumbler and the combination of second pulse signal; To avoid turning to judged result to produce error, the above-mentioned this method of utilizing time interval assurance test result accuracy is when the cyclical movement direction determining; Belong to technological means commonly used, so no longer specifically give unnecessary details.
Above-mentioned mentioning owing to can think that the speed when sensing element 1 process is near on-off element 2 is at the uniform velocity, so even if tumbler is to do the rotation of speed change, above-mentioned testing result is still set up, promptly still can be judged the rotation direction of tumbler accurately.In addition,, can also calculate the number of turns and the rotation period that tumbler rotates, the tumbler instantaneous velocity in the time of also can recording sensing element 1 process near on-off element 2 simultaneously through detection signal except judging the rotation direction.
Second embodiment:
Please refer to Fig. 5 and Fig. 6; Wherein Fig. 5 is the rotation detecting device second example structure synoptic diagram of the present invention; Fig. 6 is the inductive impulse signal schematic representation of second embodiment, and is as shown in the figure, and the rotation detecting device structure in the present embodiment is identical with the first embodiment major part; Difference is; First induction part 11 has different inductions with second induction part 12 in the present embodiment, can with produce the different induced signal of intensity near on-off element 2, the intensity of the pulse signal that is received by detection module 3 at last varies in size; It is different to be reflected to the level height that is pulse in the diagram, does not then have special requirement for the sensitive time length of first induction part 11 and second induction part 12.In the present embodiment; The induction of first induction part 11 is greater than the induction of second induction part 12; First pulse signal 31 of first induction part correspondence is greater than the second corresponding pulse signal 32 of second induction part, and is as shown in Figure 6, and when detection module 3 receptions is that first pulse signal 31 produces prior to second pulse signal 32; So with regard to the decidable tumbler for clockwise rotating, output relevant detection result; Otherwise; If what detection module 3 received is that second pulse signal 32 produces prior to first pulse signal 31; Then the decidable tumbler is for rotating counterclockwise; Same, it also need possess detection module receive the pulse combined signal of " height-low-Gao " after, should guarantee T1, the T2 of correspondence when after this low level time rotates greater than the tumbler minimum speed, the precondition of T3 sum.
Other structures of the rotation detecting device of present embodiment and principle of work are all identical with above-mentioned first embodiment, repeat no more at this.
Further, present embodiment also can be optimized improvement, the connecting portion that does not have inducing function 13 is improved to have inducing function, and the induction of connecting portion 13 is preferably and is different from first induction part 11 and second induction part 12.Like this; When sensing element 1 rotates process near on-off element 2 with tumbler 10; With three pulse signals that vary in size of continuous generation; As shown in Figure 7, first pulse signal 31, second pulse signal 32 and the 3rd pulse signal 33, wherein the 3rd pulse signal 33 is corresponding induced signal that to be connecting portion 13 produced through near on-off element 2 time.
Judge that rotation direction only needs to get final product with reference to these three continuous pulse signals that vary in size; From the above; First pulse signal 31 is greater than second pulse signal 32 in the present embodiment; The pulse signal that in three continuous impulse signals, at first produces can think then that greater than the last pulse signal that produces first induction part 11 turns near on-off element 2 prior to second induction part 12, and promptly tumbler 10 is for clockwise rotating; Otherwise the pulse signal that in three continuous impulse signals, at first produces judges then that less than the last pulse signal that produces tumbler 10 is for rotating counterclockwise.The 3rd pulse signal 33 is less than first pulse signal 31 and second pulse signal 32 among Fig. 7, but not as restriction.
Other structures and the principle of work of rotation detecting device among second embodiment, identical with above-mentioned first embodiment, repeat no more at this.
The 3rd embodiment:
Please refer to Fig. 8 and Fig. 9, wherein Fig. 8 is rotation detecting device the 3rd an example structure synoptic diagram of the present invention, and Fig. 9 is the 3rd embodiment inductive impulse signal schematic representation; As shown in the figure; Rotation detecting device structure in the present embodiment is identical with the second embodiment major part, and difference is that the sensing element 1 in the present embodiment comprises first induction part 11 and second induction part 12; First induction part 11 directly is connected with second induction part 12, and sensing element 1 no longer comprises connecting portion.And this kind structural response of sensing element 1 is on the pulse waveform and has only first pulse signal 31 and second pulse signal 32, and first pulse signal 31 links to each other with second pulse signal 32, forms two continuous pulse signals.
Identical with above-mentioned second embodiment; First induction part 11 has different inductions with second induction part 12; Can with produce the different induced signal of intensity near on-off element 2; The last pulse signal intensity that is received by detection module 3 varies in size, and it is different to be reflected to the level height that is pulse in the diagram, does not then have special requirement for the sensitive time length of first induction part 11 and second induction part 12.First pulse signal 31 that first induction part is corresponding in the present embodiment is greater than the second corresponding pulse signal 32 of second induction part; As shown in Figure 9; When the pulse of front in the pulse diagram during greater than the pulse of back; Can think that then first pulse signal 31 occurs prior to second pulse signal, first induction part 11 turns near on-off element 2 prior to second induction part 12, and promptly tumbler 10 is for clockwise rotating; Otherwise, when the pulse of front during, can think that then second pulse signal 32 occurs prior to first pulse signal 31 less than the pulse of back, second induction part 12 turns near on-off element 2 prior to first induction part 11, and promptly tumbler 10 is for rotating counterclockwise.Only the size according to two consecutive pulses signals is turning to of decidable tumbler, and is more easy to be reliable.
Other structures and the principle of work of rotation detecting device among the 3rd embodiment, identical with above-mentioned second embodiment, repeat no more at this.
In addition; The present invention also provides a kind of engineering machinery; This project machinery comprises tumbler, and the rotation detecting device that is used to detect the tumbler rotary state, and this rotation detecting device is rotation detecting device of the present invention; Its concrete structure, principle and function realization or the like all are recorded in the foregoing description, repeat no more at this.
The above is merely the schematic embodiment of the present invention, is not in order to limit scope of the present invention.Any those skilled in the art, equivalent variations of under the prerequisite that does not break away from design of the present invention and principle, having done and modification all should belong to the scope that the present invention protects.
Claims (10)
1. a rotation detecting device is characterized in that, said rotation detecting device comprises:
Sensing element is located on the tumbler to be measured, can rotate with said tumbler, and said sensing element comprises first induction part, second induction part and connecting portion, and said connecting portion is connected between said first induction part and second induction part;
Near on-off element, be located at the side that said tumbler rotates circumference, saidly can successively produce different induced signals with said first induction part and second induction part near on-off element;
Detection module is connected in saidly near on-off element and receive the induced signal of its transmission, handles also output corresponding detection result.
2. rotation detecting device according to claim 1; It is characterized in that; The induction length of said first induction part is greater than said second induction part, and the duration of the said induced signal that produces near on-off element and said first induction part is greater than said second induction part.
3. rotation detecting device according to claim 1; It is characterized in that; The induction of said first induction part is greater than said second induction part, and the intensity of the said induced signal that produces near on-off element and said first induction part is greater than said second induction part.
4. rotation detecting device according to claim 3 is characterized in that said connecting portion also has inducing function, and the induction of said connecting portion is different from said first induction part and second induction part.
5. according to claim 1,2,3 or 4 described rotation detecting devices; It is characterized in that; The said induced signal that produces near on-off element is a pulse signal; Said can basis and the sensitive time length of said first induction part, second induction part near on-off element, and the corresponding duration length different pulse signal that produces; Perhaps, said can basis and the induction size of said first induction part, second induction part, connecting portion near on-off element, and the corresponding pulse signal that varies in size that produces.
6. rotation detecting device according to claim 1 is characterized in that, said sensing element is a strip, and it is along the tangential direction setting of the rotation circumference of said tumbler.
7. rotation detecting device according to claim 6 is characterized in that, said tumbler is a rotating disk, and said sensing element is arranged on the said rotating disk near the circumferential edges place, and said sensing element is provided with along said rotating disk tangent to periphery direction.
8. rotation detecting device according to claim 1 is characterized in that said sensing element also comprises a fixed leg; Be fixed in said connecting portion below; Offer fixed orifice on the said tumbler, said fixed leg is fixed in the said fixed orifice, makes said sensing element be fixed in said tumbler.
9. a rotation detecting device is characterized in that, said rotation detecting device comprises:
Sensing element; Be located on the tumbler to be measured, can rotate with said tumbler, said sensing element comprises first induction part and second induction part; Said first induction part connects said second induction part, and said first induction part has different inductions with second induction part;
Near on-off element, be located at the side that said tumbler rotates circumference, saidly can produce the different induced signal of intensity with said first induction part and second induction part near on-off element;
Detection module is connected in saidly near on-off element and receive the induced signal of its transmission, handles also output corresponding detection result.
10. an engineering machinery is characterized in that, said engineering machinery comprises:
Tumbler;
Be used to detect the rotation detecting device of said tumbler rotary state, said rotation detecting device is each described rotation detecting device of claim 1 to claim 9.
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| CN103728878A (en) * | 2014-01-10 | 2014-04-16 | 四川省纺织科学研究院 | Over-rotation protection circuit |
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Application publication date: 20120425 |