CN209247101U - A kind of intellectual water meter light pulse sensor of multiple spot induction type positive and negative rotation identification - Google Patents
A kind of intellectual water meter light pulse sensor of multiple spot induction type positive and negative rotation identification Download PDFInfo
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- CN209247101U CN209247101U CN201920015496.8U CN201920015496U CN209247101U CN 209247101 U CN209247101 U CN 209247101U CN 201920015496 U CN201920015496 U CN 201920015496U CN 209247101 U CN209247101 U CN 209247101U
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Abstract
The utility model provides a kind of intellectual water meter light pulse sensor of multiple spot induction type positive and negative rotation identification, including sensor housing, microcontroller, light emitting diode, current-limiting resistance unit, wiring board, at least three optical environment brightness impression elements and at least three light-guiding pillars；The wiring board is set to inside sensor housing, and the microcontroller and current-limiting resistance unit are each attached on wiring board；The microcontroller is connected by the anode of current-limiting resistance unit and light emitting diode, and the cathode of the light emitting diode is connect with microcontroller；Each optical environment brightness impression element is connect with microcontroller；Each optical environment brightness impression element spacing is set to the bottom of wiring board；The lower surface of an optical environment brightness impression element is fixedly arranged on per the light-guiding pillar；The light emitting diode is fixedly arranged on the bottom of wiring board.The utility model advantage: anti-interference ability can be enhanced by the light pulse sensor and improve reliability.
Description
Technical field
The utility model relates to intellectual water meter field, in particular to a kind of intellectual water meter of multiple spot induction type positive and negative rotation identification
Light pulse sensor.
Background technique
In intellectual water meter industry, existing watermeter flowing rate acquisition sensor is mainly the following type: magnetic strength water meter
Sensor, camera shooting direct-reading water meter, LC metal inductive pick-up and light sensation sensor of water meter.Wherein, magnetic strength sensor of water meter needs
Install magnetic flowing pointer, flow collection integration of equipments magnet-sensitive element, for detecting the flow collection of water meter additional in water gauge body；
Due to installing magnetic pointer in water gauge body, to the attractive effect of the water gauge body of metal, this will increase the rotational resistance of pointer,
Influence the performance of water meter.
Camera shooting direct-reading water meter is that backstage is taken pictures and uploaded to by reading of the camera to dial plate, for daemon software
Identification or manual identified, still, using camera shooting direct-reading water meter, there are following defects: image data amount is too big, and network transmission is tired
It is difficult；Higher cost, it is difficult to promote；Camera power is higher, cannot support real-time monitoring, can only substitute artificial regular water-meter reading
Dial plate number, can not real-time monitoring water meter discharge process.
LC metal inductive pick-up needs to install the sheet metal pointer of certain area in water gauge body, and flow collection equipment needs
LC resonance circuit is integrated, when the sheet metal pointer of water meter is rotated to close to LC resonance circuit, will increase the damping of lc circuit,
To change the amplitude of LC resonance waveform, the rotation of indicator of water gauge is differentiated with this, and calculate water meter walks water flow.But
There are following defects for LC metal inductive pick-up: influencing the humorous of LC by then passing through sheet metal pointer close to LC resonance circuit
Vibration wave-shape amplitude, required distance of the sheet metal pointer away from LC resonance circuit is closer, this makes the requirement to water meter structure more severe
It carves, special water gauge body can only be directed to, therefore, versatility is poor.
For light sensation sensor of water meter, cardinal principle is integrated processor, light emitting diode and photosensitive on a sensor
Electronic component sends light by light emitting diode, is absorbed after generating reflection on water meter dial plate by photosensitive electronic component, converted
For electric signal；When due to pointer close to photosensitive electronic component, light or generation to light emitting diode absorb or generate reflection,
So that the luminous intensity sensed on photosensitive electronic component generates variation, to make to export change in electric；Meanwhile by handling
Device determines the rotational trajectory of indicator of water gauge according to the variation of electric signal.
Existing light sensation sensor of water meter there are mainly two types of scheme: one is two light emitting diodes with unification sense
Optoelectronic component, the program are alternately shone using two light emitting diodes, their luminous hot spots generated overlap；Water meter
When pointer passes through isolated area and the overlapping region of hot spot produced by two light emitting diodes in rotary course, it can determine
The direction of rotation of pointer, thus identify water meter positive and negative rotation (such as the applying date be 2016.06.21, application No. is
201610449360.9 Chinese invention patent disclose a kind of single photosensitive type sensor of water meter).But since the program is main
It alternately being shone using two light emitting diodes, the power consumption of sensor occurs mainly on the transmitting light of light emitting diode, therefore,
Using two light emitting diodes, the power consumption of sensor is larger, is unfavorable for the requirement that intellectual water meter uses battery powered low-power consumption.
Another scheme is to cooperate two photosensitive electronic components using a light emitting diode.For example, the applying date is
2015.11.05, application No. is 201510743251 Chinese invention patents to disclose a kind of sensor of water meter, water meter sensing
Device cooperates two photosensitive electronic components abutted together using a light emitting diode；Two photosensitive electronic components are in light-emitting diodes
There is photosensitive region overlapping in part on hot spot caused by managing, indicator of water gauge passes through two photosensitive electronic components in rotary course
When photosensitive isolated area and overlapping region, the direction of rotation of pointer can be determined, to identify the positive and negative rotation of water meter.But
Two photosensitive electronic components in the program need to be closely packed together, so that there is the induction region of overlapping；Due to photosensitive region compared with
It is small, it needs to determine indicator of water gauge and rotates to the independent induction region of two photosensitive electronic components to judge its direction of rotation, just
It is required that having higher luminous frequency and processor acquisition process frequency, reaches induction region in order to avoid missing pointer and is not sensed by,
Therefore, the power consumption of the sensor of water meter is also bigger, is unfavorable for the requirement that intellectual water meter uses battery powered low-power consumption.Simultaneously
Since application environment is complex, there are the interference of various external light sources, due to being full of water in wet-type meter, have refraction to make light
With etc. factors, be easy to cause the sequencing of two photosensitive electronic components induction light sources to change；To cause flow collection
Count few meter, more meters or the mistakes such as positive and negative rotation is reverse.
In addition, applicant applied on 08 07th, 2018 and discloses a kind of light pulse sensor (Shen of intellectual water meter
Absorption degree of reflection according to different colours to light please can be realized by the light pulse sensor number for 201810888583.4)
Different principles detects the rotation status of hand of dial, and acquires the real-time traffic of water meter, and whole fortune can be greatly reduced
Row power consumption.But since the light pulse sensor is provided only with two optical environment brightness impression elements, that is to say, that it is only
There are three types of state A-AB-B, and these three states are indispensable, this is but also during specific works, when due to certain
When reason causes one of state to fail, the positive and negative rotation of pointer just can not be correctly judged；Therefore, the light pulse sensor
Have the defects that anti-interference ability is weak, reliability is low.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of intellectual water meter of multiple spot induction type positive and negative rotation identification
Light pulse sensor can enhance anti-interference ability by the light pulse sensor and improve reliability.
The utility model is realized in this way: a kind of intellectual water meter light pulse sensing of multiple spot induction type positive and negative rotation identification
Device, the light pulse sensor include a sensor housing, a microcontroller, a light emitting diode, a current limliting electricity
Hinder unit, a wiring board, at least three optical environment brightness impression elements and at least three light-guiding pillars；The wiring board is solid
Set on the inside of the sensor housing, the microcontroller and current-limiting resistance unit are each attached on the wiring board；Institute
It states microcontroller and is connected by the current-limiting resistance unit with the anode of the light emitting diode, the light emitting diode is born
Pole is connected with the microcontroller；Each optical environment brightness impression element is connected with the microcontroller；
Each optical environment brightness impression element spacing is set to the bottom of the wiring board, and makes each optics
Ambient brightness sensing element is located at the surface of the rotation round of the intellectual water meter hand of dial；It is fixed per the light-guiding pillar
In the lower surface of an optical environment brightness impression element；
The light emitting diode is fixedly arranged on the bottom of the wiring board, and the light emitting diode is made to be irradiated to the intelligence
Hot spot on water meter dial plate is located at the lower section of each light-guiding pillar.
Further, each optical environment brightness impression element is made to be located side by side at the intellectual water meter hand of dial
The surface at any one place of rotation round；The light emitting diode is set to the bottom of the wiring board diagonally downward, and makes described
Hot spot in light emitting diode oblique illumination to the intellectual water meter dial plate is located at the underface of each light-guiding pillar.
Further, each optical environment brightness impression element is made side by side and to be equidistantly located at the intellectual water meter
The surface at any one place of the rotation round of hand of dial.
Further, the light pulse sensor includes three optical environment brightness impression elements, and is made described in three
Optical environment brightness impression element is side by side and equidistantly positioned at any one place of rotation round of the intellectual water meter hand of dial
Surface.
Further, each optical environment brightness impression element ring is made to be set to the rotation of the intellectual water meter hand of dial
Turn the surface of circumference；The light emitting diode be set to vertically downward the rotation center of the intellectual water meter hand of dial just on
Side, and so that the hot spot on the light emitting diode vertical irradiation to the intellectual water meter dial plate is covered the intellectual water meter dial plate and refer to
The entire rotary area of needle.
Further, make each optical environment brightness impression element uniform ring be set to the intellectual water meter dial plate to refer to
The surface of the rotation round of needle.
Further, the light pulse sensor includes three optical environment brightness impression elements, makes three light
Learn ambient brightness sensing element in 120 degree of even angle be located on the intellectual water meter hand of dial rotation round just on
Side.
Further, the current-limiting resistance unit includes at least one first current-limiting resistance and one second current-limiting resistance；Institute
State that microcontroller passes through first current-limiting resistance respectively and the second current-limiting resistance is connected with the anode of the light emitting diode
It connects；First current-limiting resistance is different from the resistance value of the second current-limiting resistance.
Further, the current-limiting resistance unit includes one first current-limiting resistance, one second current-limiting resistance, a third current limliting
Resistance, one the 4th current-limiting resistance and one the 5th current-limiting resistance；The microcontroller passes through first current-limiting resistance, respectively
The positive phase of two current-limiting resistances, third current-limiting resistance, the 4th current-limiting resistance and the 5th current-limiting resistance and the light emitting diode
Connection；First current-limiting resistance, the second current-limiting resistance, third current-limiting resistance, the 4th current-limiting resistance and the 5th current-limiting resistance
Resistance value be all different.
Further, the light emitting diode is the light emitting diode of 550 nano wave lengths, and the microcontroller uses
LPC802 chip, the light-guiding pillar are the light-guiding pillar on convex surface.
The utility model has the advantages that
1, the utility model is matched using at least three optical environment brightness impression elements unifies a light emitting diode come to table
Index carries out positive and negative rotation identification so that during specific works, even if for some reason and cause one of them or
The induction of two states is less than can also carry out positive and negative rotation differentiation according to collected state, therefore, with existing technical solution
It compares, there is stronger anti-interference and higher reliability.
2, cleverly using the color difference of the hand of dial of mechanical water meter itself and dial plate, according to different colours to light
The different principle of degree of reflection is absorbed to detect the rotation status of hand of dial, and acquires the real-time traffic of water meter；Compared to magnetic
Inductive pick-up and LC metal inductive pick-up, the light pulse sensor of the utility model do not need to install intellectual water meter specific
Pointer, therefore, strong applicability is particluarly suitable for the occasions such as old table transformation and uses；
3, light-guiding pillar of the installation with convex design on optical environment brightness impression element, can increase actual induction face
Product enables optical environment brightness impression element to sense bigger regional scope, and such hand of dial is by the region
Time is with regard to long, so that can guarantee is reducing the luminous frequency of light emitting diode and adopting to optical environment brightness impression element
In the case where sample frequency, the state that hand of dial reaches the region also can be correctly captured, this also contributes to reducing light pulse
The overall operation power consumption of sensor, and then the requirement that intellectual water meter uses battery powered low-power consumption can be met well；
4, microcontroller uses super low-power consumption, the high speed LPC802 chip of cortex M0+ kernel, internal to have one
The ADC in 12 12 channels, can be good to three or three or more optical environment brightness impression elements export electric signal into
Row ADC conversion, so as to reduce the runing time of microcontroller, and reduces the overall operation power consumption of light pulse sensor；
5, with the function of automatically adjusting lumination of light emitting diode brightness according to ambient brightness, light pulse can be further decreased
The power consumption of sensor, and then the requirement that intellectual water meter uses battery powered low-power consumption can be met well.Specific implementation process
Be: microcontroller connects light emitting diode by the current-limiting resistance unit of a variety of different resistance values；At work, microcontroller is logical
The electric signal on optical environment brightness impression element is crossed, the size of ambient brightness, the corresponding current limliting electricity of reselection can be determined
Resistance is to control lumination of light emitting diode；Since there are certain fluctuations for ambient brightness, when ambient brightness is bigger, MCU is just controlled
The current-limiting resistance for making small resistance value makes lumination of light emitting diode, to improve light emission luminance, increases signal-to-noise ratio；When ambient brightness is smaller
When, the current-limiting resistance that MCU just controls big resistance value makes lumination of light emitting diode, suitably to reduce the light emission luminance of light emitting diode,
Such as in darker control cabinet, the operation brightness of light emitting diode can be reduced, to further decrease power consumption；
6, using the light emitting diode of 550 highlighted nano wave lengths, and light emitting diode uses the peace with constant slope
Installing meter or mounting design vertically downward, and the hot spot being radiated on dial plate can be made to be in optical environment brightness impression element
Underface, it is possible to increase the flux of light, improve with the signal-to-noise ratio of ambient brightness, and the accuracy of acquisition and reliable can be improved in turn
Property.
Detailed description of the invention
The utility model is further described in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is that a kind of structure of the intellectual water meter light pulse sensor of multiple spot induction type positive and negative rotation identification of the utility model is shown
One of be intended to.
Fig. 2 is the top view of optical environment brightness impression element and light emitting diode in Fig. 1.
Fig. 3 is that a kind of circuit of the intellectual water meter light pulse sensor of multiple spot induction type positive and negative rotation identification of the utility model is former
One of reason figure.
Fig. 4 is that a kind of structure of the intellectual water meter light pulse sensor of multiple spot induction type positive and negative rotation identification of the utility model is shown
The two of intention.
Fig. 5 is the top view of optical environment brightness impression element and light emitting diode in Fig. 4.
Fig. 6 is that a kind of circuit of the intellectual water meter light pulse sensor of multiple spot induction type positive and negative rotation identification of the utility model is former
Manage the two of figure.
Fig. 7 be the utility model hand of dial rotate when three optical environment brightness impression elements induction schematic diagram it
One.
Fig. 8 be the utility model hand of dial rotate when three optical environment brightness impression elements induction schematic diagram it
Two.
Specific embodiment
Specific embodiment one:
It please refers to shown in Fig. 1, Fig. 2, Fig. 6 and Fig. 7, a kind of intelligent water of multiple spot induction type positive and negative rotation identification of the utility model
Mass color pulse transducer 100, the light pulse sensor 100 include 1, microcontroller 2 of a sensor housing (i.e.
MCU), the current-limiting resistance unit 4, one of light emitting diode 3, one wiring board 5, at least three optical environment brightness impression members
Part 6 and at least three light-guiding pillars 7；The wiring board 5 is fixedly arranged on the inside of the sensor housing 1, the microcontroller 2 with
And current-limiting resistance unit 4 is each attached on the wiring board 5, microcontroller 2 and current-limiting resistance unit 4 can be specifically arranged
The upper surface of assist side 5；The positive phase that the microcontroller 2 passes through the current-limiting resistance unit 4 and the light emitting diode 3
Connection, the cathode of the light emitting diode 3 are connected with the microcontroller 2, in the specific implementation, can pass through the current limliting
Resistance unit 4 controls the light emission luminance of the light emitting diode 3, and resistance value is bigger, and 3 light emission luminance of light emitting diode is got over
Secretly, resistance value is smaller, and 3 light emission luminance of light emitting diode is brighter；Each optical environment brightness impression element 6 with it is described
Microcontroller 2 is connected, and the optical environment brightness impression element 6 is used to the optical signal sensed being converted to electric signal；
Each 6 spacing of optical environment brightness impression element is set to the bottom of the wiring board 5, and makes each light
Learn the surface that ambient brightness sensing element 6 is located at the rotation round of the intellectual water meter (not shown) hand of dial 8；Per described
Light-guiding pillar 7 is fixedly arranged on the lower surface of an optical environment brightness impression element 6；
The light emitting diode 3 is fixedly arranged on the bottom of the wiring board 5, and it is described to be irradiated to the light emitting diode 3
Hot spot on intellectual water meter dial plate 9 is located at the lower section of each light-guiding pillar 7, so as to increase the flux of light, raising and environment
The signal-to-noise ratio of brightness.
In the specific implementation, the light that the light emitting diode 3 issues can be irradiated on the dial plate 9 of intellectual water meter and generate
Hot spot, the light of hot spot can be reflected on light-guiding pillar 7 again, and by light-guiding pillar 7 that the light conduction of reflection is bright to optical environment
Sensing element 6 is spent, the optical signal sensed can be converted to electric signal and send microcontroller to by optical environment brightness impression element 6
Device 2, in this way, microcontroller 2 can calculate what dial plate 9 when light emitting diode 3 shines was emitted by electric signal based on the received
Bright intensity value.Due to absorption or reflex of the hand of dial 8 to light wave of intellectual water meter, so that hand of dial 8 is rotating
When to the induction region of optical environment brightness impression element 6 and not in induction region, optical environment brightness impression element 6 can
Apparent brightness variation is sensed；In this way, microcontroller 2 can determine the rotation status of hand of dial 8, it is specifically logical
Cross three or three or more optical environment brightness impression elements 6 according to sense hand of dial 8 enter induction region and far from sense
The sequencing in region is answered, determines that its direction of rotation is forward or reverse with this.
In specific embodiment of the utility model one, the light pulse sensor 100 further includes that sensor output is drawn
Line 10, one end of the sensor output lead 10 are connected with the wiring board 5, and the other end extends to the sensor housing
It 1 outside can very convenient carry out wiring by the way that sensor output lead 10 to be extended to the outside of sensor housing 1.
In specific embodiment of the utility model one, it is located side by side at each optical environment brightness impression element 6
The surface at any one place of rotation round of the intellectual water meter hand of dial 8, as shown in Figure 2；The light emitting diode 3 tilts
It is set to the bottom of the wiring board 5 downwards, and makes in 3 oblique illumination of light emitting diode to the intellectual water meter dial plate 9
Hot spot is located at the underface of each light-guiding pillar 7, in this manner it is possible to by light-guiding pillar 7 by the light conduction of reflection to each
Optical environment brightness impression element 6.
In order to make each optical environment brightness impression element 6 that there are better inductive effects, in the utility model
In specific embodiment one, each optical environment brightness impression element 6 is made side by side and to be equidistantly located at the intellectual water meter table
The surface at any one place of the rotation round of index 8, specifically by each optical environment brightness impression element 6 side by side and
The bottom of spaced set assist side 5.
In order to reduce the overall power of the light pulse sensor 100 at runtime, in the specific implementation of the utility model
In example one, the light pulse sensor 100 includes three optical environment brightness impression elements 6, and makes three optical environments
Brightness impression element 6 is side by side and equidistantly positioned at the surface at any one place of rotation round of the intellectual water meter hand of dial 8.
In specific embodiment of the utility model one, as shown in fig. 6, the current-limiting resistance unit 4 includes at least one the
One current-limiting resistance R1 and one second current-limiting resistance R2；The microcontroller 2 respectively by the first current-limiting resistance R1 and
Second current-limiting resistance R2 is connected with the anode of the light emitting diode 3；The first current-limiting resistance R1 and the second current-limiting resistance
The resistance value of R2 is different, in the specific implementation, hair can be automatically adjusted by the first current-limiting resistance R1 and the second current-limiting resistance R2
The light emission luminance of optical diode 3 runs brightness to achieve the purpose that reduce light emitting diode 3, reduces operation power consumption.
In specific embodiment of the utility model one, the light emitting diode 3 is the light-emitting diodes of 550 nano wave lengths
Pipe, by using the light emitting diode 3 of 550 highlighted nano wave lengths, and light emitting diode 3 is using the installation with constant slope
Design, so that the hot spot being radiated on dial plate 9 is in the underface of optical environment brightness impression element 6, it is possible to increase the flux of light,
Improve the signal-to-noise ratio with ambient brightness.
For the microcontroller 2 using super low-power consumption, the high speed LPC802 chip of cortex M0+ kernel, inside has one
The ADC in a 12 12 channels can be good at the electric signal exported to three or three or more optical environment brightness impression elements 6
ADC conversion is carried out, so as to reduce the runing time of microcontroller 2, and reduces the overall operation function of light pulse sensor 100
Consumption.
The light-guiding pillar 7 is that the light-guiding pillar on convex surface can increase actual induction area by using convex design, so that light
Bigger regional scope can be sensed by learning ambient brightness sensing element 6, and such hand of dial 8 just compares by the time in the region
It is longer, to can guarantee in the luminous frequency of reduction light emitting diode 3 and to the sample frequency of optical environment brightness impression element 6
In the case where, it also can correctly capture the state that hand of dial 8 reaches the region.
The optical environment brightness impression element 6 is all made of the realization of ISL29006 chip, which has low
The characteristics of power consumption.
The working principle of the utility model specific embodiment one is following (as shown in Figure 6 and Figure 7, with light pulse sensor 100
Including three optical environment brightness impression elements A, B, C, three light-guiding pillars 71,72,73 and current-limiting resistance unit 4 include first
Illustrated for current-limiting resistance R1 and the second current-limiting resistance R2):
Light emitting diode 3 is controlled by microcontroller 2 and is in non-light emitting state, at this point, environment light passes through three light-guiding pillars
71, it 72,73 is transmitted on three optical environment brightness impression elements A, B, C respectively, optical environment brightness impression element A, B, C will
Optical signal is converted to the ADC interface that microcontroller 2 is transferred to after electric signal；Microcontroller 2 carries out ADC to the electric signal received
The sampled value of ambient brightness is obtained after conversion, microcontroller 2 is according to the first limit of the size of the ambient brightness sampled value obtained control
Resistance conducting in leakage resistance R1 and the second current-limiting resistance R2, and closed circuit is constituted with light emitting diode 3, make luminous two
Pole pipe 3 issues light, and since light emitting diode 3 is installed by certain gradient, the light launched understands oblique illumination to intelligence
On the dial plate 9 of energy water meter, and a hot spot is generated in the underface of three optical environment brightness impression elements A, B, C.Dial plate 9 is anti-
The light of hot spot is penetrated, and by three light-guiding pillars 71,72,73 respectively by the light conduction of reflection to three optical environment brightness impressiones
It answers on element A, B, C, optical environment brightness impression element A, B, C can convert optical signals to electric signal and be transferred to microcontroller
2 ADC interface；Microcontroller 2 is to 9 institute of dial plate when showing that light emitting diode 3 shines after the electric signal progress ADC conversion received
The bright intensity of transmitting.
When the hand of dial 8 of intellectual water meter rotates to the lower section of light-guiding pillar 71,72,73, coloured 8 meeting of hand of dial
Sponge a part of light；And when hand of dial 8 does not rotate to the lower section of light-guiding pillar 71,72,73, white dial plate 9 then can
Most of light is reflected, dial plate 9 is irradiated to it follows that light emitting diode 3 issues light and is reflected into optical environment brightness impression
It answers the bright intensity value of element A, B, C and to be irradiated to the bright intensity value difference that hand of dial 8 is reflected larger；Therefore, micro-control
Device 2 processed is according to bright intensity difference it may determine that whether hand of dial 8 rotates to optical environment brightness impression element A, B, C out
Lower section.Simultaneously as light-guiding pillar 71,72,73 uses convex design, so that it is with focusing function, in this way, working as hand of dial
8 when not being fully rotated into the lower section of light-guiding pillar 71,72,73 also, it will be able to influence the light quantity of the conduction of light-guiding pillar 71,72,73, i.e. phase
When larger in the region that optical environment brightness impression element A, B, C can incude, when hand of dial 8 has longer in rotary course
Between be in induction region, therefore, adopting for microcontroller 2 can effectively reduce by the light pulse sensor 100 of the utility model
Collect frequency, so as to reduce power consumption.
Simultaneously as there are three optical environment brightness impression element A, B, C for setting, when hand of dial 8 is rotated to by dipped beam
When learning ambient brightness sensing element A, optical environment brightness impression element A can export the value after bright Strength Changes；When dial plate refers to
When needle 8 is rotated between optical environment brightness impression element A and optical environment brightness impression element B, optical environment brightness impression
Element A and optical environment brightness impression element B can export the value after bright Strength Changes；When hand of dial 8 rotate to it is close
Optical environment brightness impression element B and when far from optical environment brightness impression element A, optical environment brightness impression element B can be defeated
Value after bright Strength Changes out, and optical environment brightness impression element A can then restore normal value；When hand of dial 8 rotates to
When between optical environment brightness impression element B and optical environment brightness impression element C, optical environment brightness impression element B and light
The value after bright Strength Changes can all be exported by learning ambient brightness sensing element C；When hand of dial 8 rotate to close to optical environment it is bright
When spending sensing element C and separate optical environment brightness impression element B, optical environment brightness impression element C can export bright intensity
Value after variation, and optical environment brightness impression element B can then restore normal value.Therefore, pass through optical environment brightness impression member
The different variations sequence of part A, optical environment brightness impression element B and optical environment brightness impression element C-state can be accurate
Judge that hand of dial 8 is to rotate forward or invert, i.e., if state change sequence is A-AB-B-BC-C, illustrates dial plate
Pointer 8 is to rotate forward；If state change sequence is C-CB-B-BA-A, illustrate that hand of dial 8 is reversion.
In conclusion due in the technical solution of the utility model, hand of dial 8 when rotated can there are at least 5
A state, therefore, during specific works, when leading to wherein one or two states induction for some reason not then,
Still positive and negative rotation differentiation, such as A-AB-BC-C can be carried out according to collected state；A—B—BC—C；A—B—C
Etc., as long as can correctly collect three states therein can be differentiated.It follows that the technical side of the utility model
Case has stronger anti-interference and higher reliability compared with currently existing scheme.
Specific embodiment two:
It please refers to shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 7, unlike specific embodiment one, in the specific of the utility model
In embodiment two, in order to realize that the light emission luminance to light emitting diode 3 is preferably adjusted, to further decrease operation function
Consumption, the current-limiting resistance unit 4 include one first current-limiting resistance R1, one second current-limiting resistance R2, a third current-limiting resistance R3, one
4th current-limiting resistance R4 and one the 5th current-limiting resistance R5；The microcontroller 2 passes through the first current-limiting resistance R1, the respectively
Two current-limiting resistance R2, third current-limiting resistance R3, the 4th current-limiting resistance R4 and the 5th current-limiting resistance R5 and the light emitting diode 3
Anode be connected；The first current-limiting resistance R1, the second current-limiting resistance R2, third current-limiting resistance R3, the 4th current-limiting resistance R4
And the 5th the resistance value of current-limiting resistance R5 be all different, in this way, in the specific implementation, so that it may according to the first current-limiting resistance R1,
Second current-limiting resistance R2, third current-limiting resistance R3, the 4th current-limiting resistance R4 and the 5th current-limiting resistance R5 are luminous to automatically adjust
The light emission luminance of diode 3.
Specific embodiment three:
It please refers to shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 8, a kind of intelligent water of multiple spot induction type positive and negative rotation identification of the utility model
Mass color pulse transducer 100, the light pulse sensor 100 include 1, microcontroller 2 of a sensor housing (i.e.
MCU), the current-limiting resistance unit 4, one of light emitting diode 3, one wiring board 5, at least three optical environment brightness impression members
Part 6 and at least three light-guiding pillars 7；The wiring board 5 is fixedly arranged on the inside of the sensor housing 1, the microcontroller 2 with
And current-limiting resistance unit 4 is each attached on the wiring board 5, microcontroller 2 and current-limiting resistance unit 4 can be specifically arranged
The upper surface of assist side 5；The positive phase that the microcontroller 2 passes through the current-limiting resistance unit 4 and the light emitting diode 3
Connection, the cathode of the light emitting diode 3 are connected with the microcontroller 2, in the specific implementation, can pass through the current limliting
Resistance unit 4 controls the light emission luminance of the light emitting diode 3, and resistance value is bigger, and 3 light emission luminance of light emitting diode is got over
Secretly, resistance value is smaller, and 3 light emission luminance of light emitting diode is brighter；Each optical environment brightness impression element 6 with it is described
Microcontroller 2 is connected, and the optical environment brightness impression element 6 is used to the optical signal sensed being converted to electric signal；
Each 6 spacing of optical environment brightness impression element is set to the bottom of the wiring board 5, and makes each light
Learn the surface that ambient brightness sensing element 6 is located at the rotation round of the intellectual water meter (not shown) hand of dial 8；Per described
Light-guiding pillar 7 is fixedly arranged on the lower surface of an optical environment brightness impression element 6；
The light emitting diode 3 is fixedly arranged on the bottom of the wiring board 5, and it is described to be irradiated to the light emitting diode 3
Hot spot on intellectual water meter dial plate 9 is located at the lower section of each light-guiding pillar 7, so as to increase the flux of light, raising and environment
The signal-to-noise ratio of brightness.
In the specific implementation, the light that the light emitting diode 3 issues can be irradiated on the dial plate 9 of intellectual water meter and generate
Hot spot, the light of hot spot can be reflected on light-guiding pillar 7 again, and by light-guiding pillar 7 that the light conduction of reflection is bright to optical environment
Sensing element 6 is spent, the optical signal sensed can be converted to electric signal and send microcontroller to by optical environment brightness impression element 6
Device 2, in this way, microcontroller 2 can calculate what dial plate 9 when light emitting diode 3 shines was emitted by electric signal based on the received
Bright intensity value.Due to absorption or reflex of the hand of dial 8 to light wave of intellectual water meter, so that hand of dial 8 is rotating
When to the induction region of optical environment brightness impression element 6 and not in induction region, optical environment brightness impression element 6 can
Apparent brightness variation is sensed；In this way, microcontroller 2 can determine the rotation status of hand of dial 8, it is specifically logical
Cross three or three or more optical environment brightness impression elements 6 according to sense hand of dial 8 enter induction region and far from sense
The sequencing in region is answered, determines that its direction of rotation is forward or reverse with this.
In specific embodiment of the utility model three, the light pulse sensor 100 further includes that sensor output is drawn
Line 10, one end of the sensor output lead 10 are connected with the wiring board 5, and the other end extends to the sensor housing
It 1 outside can very convenient carry out wiring by the way that sensor output lead 10 to be extended to the outside of sensor housing 1.
In specific embodiment of the utility model three, each optical environment brightness impression element 6 is made to be located on institute
The surface of the rotation round of intellectual water meter hand of dial 8 is stated, as shown in Figure 5；The light emitting diode 3 is set to institute vertically downward
The surface of the rotation center of intellectual water meter hand of dial 8 is stated, and makes 3 vertical irradiation of light emitting diode to the intelligent water
Hot spot on table dial plate 9 covers the entire rotary area of the intellectual water meter hand of dial 8, in this way, can just pass through light-guiding pillar 7
Give the light conduction of reflection to each optical environment brightness impression element 6.
In order to make each optical environment brightness impression element 6 that there are better inductive effects, in the utility model
In specific embodiment three, each 6 uniform ring of optical environment brightness impression element is made to be set to the intellectual water meter hand of dial 8
Rotation round surface, specifically by each 6 uniform ring of optical environment brightness impression element be set to wiring board 5 bottom
Portion.
In order to reduce the overall power of the light pulse sensor 100 at runtime, in the specific implementation of the utility model
In example three, the light pulse sensor 100 includes three optical environment brightness impression elements 6, keeps three optical environments bright
Degree sensing element 6 is located on the surface of the rotation round of the intellectual water meter hand of dial 8 in 120 degree of even angle.
In order to realize that the light emission luminance to light emitting diode 3 is preferably adjusted, to further decrease operation power consumption, such as
Shown in Fig. 3, the current-limiting resistance unit 4 includes one first current-limiting resistance R1, one second current-limiting resistance R2, a third current-limiting resistance
R3, one the 4th current-limiting resistance R4 and one the 5th current-limiting resistance R5；The microcontroller 2 passes through first current-limiting resistance respectively
R1, the second current-limiting resistance R2, third current-limiting resistance R3, the 4th current-limiting resistance R4 and the 5th current-limiting resistance R5 and described luminous two
The anode of pole pipe 3 is connected；The first current-limiting resistance R1, the second current-limiting resistance R2, third current-limiting resistance R3, the 4th current limliting electricity
The resistance value of resistance R4 and the 5th current-limiting resistance R5 is all different, in this way, in the specific implementation, so that it may according to the first current-limiting resistance
R1, the second current-limiting resistance R2, third current-limiting resistance R3, the 4th current-limiting resistance R4 and the 5th current-limiting resistance R5 send out to automatically adjust
The light emission luminance of optical diode 3.
In specific embodiment of the utility model three, the light emitting diode 3 is the light-emitting diodes of 550 nano wave lengths
Pipe, by using the light emitting diode 3 of 550 highlighted nano wave lengths, and light emitting diode 3 is set using installation vertically downward
Meter, and the hot spot being radiated on dial plate 9 is made to cover the entire rotary area of the intellectual water meter hand of dial 8, it is possible to increase light
Flux, improve and the signal-to-noise ratio of ambient brightness.
For the microcontroller 2 using super low-power consumption, the high speed LPC802 chip of cortex M0+ kernel, inside has one
The ADC in a 12 12 channels can be good at the electric signal exported to three or three or more optical environment brightness impression elements 6
ADC conversion is carried out, so as to reduce the runing time of microcontroller 2, and reduces the overall operation function of light pulse sensor 100
Consumption.
The light-guiding pillar 7 is that the light-guiding pillar on convex surface can increase actual induction area by using convex design, so that light
Bigger regional scope can be sensed by learning ambient brightness sensing element 6, and such hand of dial 8 just compares by the time in the region
It is longer, to can guarantee in the luminous frequency of reduction light emitting diode 3 and to the sample frequency of optical environment brightness impression element 6
In the case where, it also can correctly capture the state that hand of dial 8 reaches the region.
The optical environment brightness impression element 6 is all made of the realization of ISL29006 chip, which has low
The characteristics of power consumption.
The working principle of the utility model specific embodiment three is following (as shown in figures 3 and 8, with light pulse sensor 100
Including three optical environment brightness impression elements A, B, C, three light-guiding pillars 71,72,73 and current-limiting resistance unit 4 include first
For current-limiting resistance R1, the second current-limiting resistance R2, third current-limiting resistance R3, the 4th current-limiting resistance R4 and the 5th current-limiting resistance R5
To illustrate):
Light emitting diode 3 is controlled by microcontroller 2 and is in non-light emitting state, at this point, environment light passes through three light-guiding pillars
71, it 72,73 is transmitted on three optical environment brightness impression elements A, B, C respectively, optical environment brightness impression element A, B, C will
Optical signal is converted to the ADC interface that microcontroller 2 is transferred to after electric signal；Microcontroller 2 carries out ADC to the electric signal received
The sampled value of ambient brightness is obtained after conversion, microcontroller 2 is according to the first limit of the size of the ambient brightness sampled value obtained control
One in leakage resistance R1, the second current-limiting resistance R2, third current-limiting resistance R3, the 4th current-limiting resistance R4 and the 5th current-limiting resistance R5
A resistance conducting, and closed circuit is constituted with light emitting diode 3, so that light emitting diode 3 is issued light, due to light emitting diode 3
It installs vertically downward, on the light meeting vertical irradiation to the dial plate 9 of intellectual water meter launched, and in three optical environments
The underface of brightness impression element A, B, C generate the hot spot of a covering entire rotary area of hand of dial 8.9 reflected light of dial plate
The light of spot, and by three light-guiding pillars 71,72,73 respectively by the light conduction of reflection to three optical environment brightness impression members
On part A, B, C, optical environment brightness impression element A, B, C can convert optical signals to electric signal and be transferred to microcontroller 2
ADC interface；Microcontroller 2 sends out dial plate 9 when showing that light emitting diode 3 shines after the electric signal progress ADC conversion received
The bright intensity penetrated.
When the hand of dial 8 of intellectual water meter rotates to the lower section of light-guiding pillar 71,72,73, coloured 8 meeting of hand of dial
Sponge a part of light；And when hand of dial 8 does not rotate to the lower section of light-guiding pillar 71,72,73, white dial plate 9 then can
Most of light is reflected, dial plate 9 is irradiated to it follows that light emitting diode 3 issues light and is reflected into optical environment brightness impression
It answers the bright intensity value of element A, B, C and to be irradiated to the bright intensity value difference that hand of dial 8 is reflected larger；Therefore, micro-control
Device 2 processed is according to bright intensity difference it may determine that whether hand of dial 8 rotates to optical environment brightness impression element A, B, C out
Lower section.Simultaneously as light-guiding pillar 71,72,73 uses convex design, so that it is with focusing function, in this way, working as hand of dial
8 when not being fully rotated into the lower section of light-guiding pillar 71,72,73 also, it will be able to influence the light quantity of the conduction of light-guiding pillar 71,72,73, i.e. phase
When larger in the region that optical environment brightness impression element A, B, C can incude, when hand of dial 8 has longer in rotary course
Between be in induction region, therefore, adopting for microcontroller 2 can effectively reduce by the light pulse sensor 100 of the utility model
Collect frequency, so as to reduce power consumption.
Simultaneously as there are three optical environment brightness impression element A, B, C for setting, when hand of dial 8 is rotated to by dipped beam
When learning ambient brightness sensing element A, optical environment brightness impression element A can export the value after bright Strength Changes；When dial plate refers to
When needle 8 is rotated between optical environment brightness impression element A and optical environment brightness impression element B, optical environment brightness impression
Element A and optical environment brightness impression element B can export the value after bright Strength Changes；When hand of dial 8 rotate to it is close
Optical environment brightness impression element B and when far from optical environment brightness impression element A, optical environment brightness impression element B can be defeated
Value after bright Strength Changes out, and optical environment brightness impression element A can then restore normal value；When hand of dial 8 rotates to
When between optical environment brightness impression element B and optical environment brightness impression element C, optical environment brightness impression element B and light
The value after bright Strength Changes can all be exported by learning ambient brightness sensing element C；When hand of dial 8 rotate to close to optical environment it is bright
When spending sensing element C and separate optical environment brightness impression element B, optical environment brightness impression element C can export bright intensity
Value after variation, and optical environment brightness impression element B can then restore normal value.Therefore, pass through optical environment brightness impression member
The different variations sequence of part A, optical environment brightness impression element B and optical environment brightness impression element C-state can be accurate
Judge that hand of dial 8 is to rotate forward or invert, i.e., if state change sequence is A-AB-B-BC-C, illustrates dial plate
Pointer 8 is to rotate forward；If state change sequence is C-CB-B-BA-A, illustrate that hand of dial 8 is reversion.
In conclusion due in the technical solution of the utility model, hand of dial 8 when rotated can there are at least 5
A state, therefore, during specific works, when leading to wherein one or two states induction for some reason not then,
Still positive and negative rotation differentiation, such as A-AB-BC-C can be carried out according to collected state；A—B—BC—C；A—B—C
Etc., as long as can correctly collect three states therein can be differentiated.It follows that the technical side of the utility model
Case has stronger anti-interference and higher reliability compared with currently existing scheme.
Specific embodiment four:
It please refers to shown in Fig. 4, Fig. 5, Fig. 6 and Fig. 8, unlike specific embodiment three, in the specific of the utility model
In example IV, the current-limiting resistance unit 4 includes at least one first current-limiting resistance R1 and one second current-limiting resistance R2；It is described
Microcontroller 2 passes through the anode of the first current-limiting resistance R1 and the second current-limiting resistance R2 and the light emitting diode 3 respectively
It is connected；The first current-limiting resistance R1 is different from the resistance value of the second current-limiting resistance R2, in the specific implementation, can pass through first
Current-limiting resistance R1 and the second current-limiting resistance R2 automatically adjusts the light emission luminance of light emitting diode 3, to reach reduction light-emitting diodes
The purpose that pipe 3 runs brightness, reduces operation power consumption.
In conclusion the utility model has the advantages that
1, the utility model is matched using at least three optical environment brightness impression elements unifies a light emitting diode come to table
Index carries out positive and negative rotation identification so that during specific works, even if for some reason and cause one of them or
The induction of two states is less than can also carry out positive and negative rotation differentiation according to collected state, therefore, with existing technical solution
It compares, there is stronger anti-interference and higher reliability.
2, cleverly using the color difference of the hand of dial of mechanical water meter itself and dial plate, according to different colours to light
The different principle of degree of reflection is absorbed to detect the rotation status of hand of dial, and acquires the real-time traffic of water meter；Compared to magnetic
Inductive pick-up and LC metal inductive pick-up, the light pulse sensor of the utility model do not need to install intellectual water meter specific
Pointer, therefore, strong applicability is particluarly suitable for the occasions such as old table transformation and uses；
3, light-guiding pillar of the installation with convex design on optical environment brightness impression element, can increase actual induction face
Product enables optical environment brightness impression element to sense bigger regional scope, and such hand of dial is by the region
Time is with regard to long, so that can guarantee is reducing the luminous frequency of light emitting diode and adopting to optical environment brightness impression element
In the case where sample frequency, the state that hand of dial reaches the region also can be correctly captured, this also contributes to reducing light pulse
The overall operation power consumption of sensor, and then the requirement that intellectual water meter uses battery powered low-power consumption can be met well；
4, microcontroller uses super low-power consumption, the high speed LPC802 chip of cortex M0+ kernel, internal to have one
The ADC in 12 12 channels, can be good to three or three or more optical environment brightness impression elements export electric signal into
Row ADC conversion, so as to reduce the runing time of microcontroller, and reduces the overall operation power consumption of light pulse sensor；
5, with the function of automatically adjusting lumination of light emitting diode brightness according to ambient brightness, light pulse can be further decreased
The power consumption of sensor, and then the requirement that intellectual water meter uses battery powered low-power consumption can be met well.Specific implementation process
Be: microcontroller connects light emitting diode by the current-limiting resistance unit of a variety of different resistance values；At work, microcontroller is logical
The electric signal on optical environment brightness impression element is crossed, the size of ambient brightness, the corresponding current limliting electricity of reselection can be determined
Resistance is to control lumination of light emitting diode；Since there are certain fluctuations for ambient brightness, when ambient brightness is bigger, MCU is just controlled
The current-limiting resistance for making small resistance value makes lumination of light emitting diode, to improve light emission luminance, increases signal-to-noise ratio；When ambient brightness is smaller
When, the current-limiting resistance that MCU just controls big resistance value makes lumination of light emitting diode, suitably to reduce the light emission luminance of light emitting diode,
Such as in darker control cabinet, the operation brightness of light emitting diode can be reduced, to further decrease power consumption；
6, using the light emitting diode of 550 highlighted nano wave lengths, and light emitting diode uses the peace with constant slope
Installing meter or mounting design vertically downward, and the hot spot being radiated on dial plate can be made to be in optical environment brightness impression element
Underface, it is possible to increase the flux of light, improve with the signal-to-noise ratio of ambient brightness, and the accuracy of acquisition and reliable can be improved in turn
Property.
Although those familiar with the art answers the foregoing describe specific embodiment of the present utility model
Working as understanding, we are merely exemplary described specific embodiment, rather than for the limit to the scope of the utility model
Fixed, those skilled in the art modification and variation equivalent made by the spirit according to the utility model all should
Cover in the scope of the claimed protection of the utility model.
Claims (10)
1. a kind of intellectual water meter light pulse sensor of multiple spot induction type positive and negative rotation identification, including a sensor housing, one
Microcontroller, a light emitting diode, a current-limiting resistance unit and a wiring board；The wiring board is fixedly arranged on the biography
The inside of sensor shell, the microcontroller and current-limiting resistance unit are each attached on the wiring board；The microcontroller
Be connected by the current-limiting resistance unit with the anode of the light emitting diode, the cathode of the light emitting diode with it is described micro-
Controller is connected；It is characterized by also including at least three optical environment brightness impression elements and at least three light-guiding pillars；
Each optical environment brightness impression element is connected with the microcontroller；
Each optical environment brightness impression element spacing is set to the bottom of the wiring board, and makes each optical environment
Brightness impression element is located at the surface of the rotation round of the intellectual water meter hand of dial；One is fixedly arranged on per the light-guiding pillar
The lower surface of the optical environment brightness impression element；
The light emitting diode is fixedly arranged on the bottom of the wiring board, and the light emitting diode is made to be irradiated to the intellectual water meter
Hot spot on dial plate is located at the lower section of each light-guiding pillar.
2. a kind of intellectual water meter light pulse sensor of multiple spot induction type positive and negative rotation identification according to claim 1, special
Sign is: the rotation round for making each optical environment brightness impression element be located side by side at the intellectual water meter hand of dial is appointed
The surface anticipated at one；The light emitting diode is set to the bottom of the wiring board diagonally downward, and makes the light emitting diode
Hot spot in oblique illumination to the intellectual water meter dial plate is located at the underface of each light-guiding pillar.
3. a kind of intellectual water meter light pulse sensor of multiple spot induction type positive and negative rotation identification according to claim 2, special
Sign is: each optical environment brightness impression element being made side by side and to be equidistantly located at the rotation of the intellectual water meter hand of dial
Turn the surface at any one place of circumference.
4. a kind of intellectual water meter light pulse sensor of multiple spot induction type positive and negative rotation identification according to claim 2, special
Sign is: including three optical environment brightness impression elements, and making three optical environment brightness impression elements side by side and waits
Spacing is located at the surface at any one place of rotation round of the intellectual water meter hand of dial.
5. a kind of intellectual water meter light pulse sensor of multiple spot induction type positive and negative rotation identification according to claim 1, special
Sign is: each optical environment brightness impression element ring being made to be set to the rotation round of the intellectual water meter hand of dial just
Top；The light emitting diode is set to the surface of the rotation center of the intellectual water meter hand of dial vertically downward, and makes institute
It states the hot spot on light emitting diode vertical irradiation to the intellectual water meter dial plate and covers the entire of the intellectual water meter hand of dial
Rotary area.
6. a kind of intellectual water meter light pulse sensor of multiple spot induction type positive and negative rotation identification according to claim 5, special
Sign is: each optical environment brightness impression element uniform ring being made to be set to the rotation round of the intellectual water meter hand of dial
Surface.
7. a kind of intellectual water meter light pulse sensor of multiple spot induction type positive and negative rotation identification according to claim 5, special
Sign is: including three optical environment brightness impression elements, making three optical environment brightness impression elements is in 120 degree of angle
Spend the surface that uniform ring is set to the rotation round of the intellectual water meter hand of dial.
8. a kind of intellectual water meter light pulse sensor of multiple spot induction type positive and negative rotation identification as described in claim 1, feature
Be: the current-limiting resistance unit includes at least one first current-limiting resistance and one second current-limiting resistance；The microcontroller point
It is not connected by first current-limiting resistance and the second current-limiting resistance with the anode of the light emitting diode；First limit
Leakage resistance is different from the resistance value of the second current-limiting resistance.
9. a kind of intellectual water meter light pulse sensor of multiple spot induction type positive and negative rotation identification as described in claim 1, feature
Be: the current-limiting resistance unit includes one first current-limiting resistance, one second current-limiting resistance, a third current-limiting resistance, one the 4th
Current-limiting resistance and one the 5th current-limiting resistance；The microcontroller pass through respectively first current-limiting resistance, the second current-limiting resistance,
Third current-limiting resistance, the 4th current-limiting resistance and the 5th current-limiting resistance are connected with the anode of the light emitting diode；Described
The resistance value not phase of one current-limiting resistance, the second current-limiting resistance, third current-limiting resistance, the 4th current-limiting resistance and the 5th current-limiting resistance
Together.
10. a kind of intellectual water meter light pulse sensor of multiple spot induction type positive and negative rotation identification as described in claim 1, feature
Be: the light emitting diode is the light emitting diode of 550 nano wave lengths, and the microcontroller uses LPC802 chip, described
Light-guiding pillar is the light-guiding pillar on convex surface.
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| CN109470328A (en) * | 2019-01-04 | 2019-03-15 | 智恒科技股份有限公司 | A kind of intellectual water meter light pulse sensor of multiple spot induction type positive and negative rotation identification |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109470328A (en) * | 2019-01-04 | 2019-03-15 | 智恒科技股份有限公司 | A kind of intellectual water meter light pulse sensor of multiple spot induction type positive and negative rotation identification |
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