CN214843429U

CN214843429U - Photoelectric sampling lens hood and photoelectric sampling device

Info

Publication number: CN214843429U
Application number: CN202121426540.8U
Authority: CN
Inventors: 刘青; 汉业朗; 张燕斌; 邹航
Original assignee: Zhejiang Viewshine Intelligent Meter Co Ltd
Current assignee: Zhejiang Viewshine Intelligent Meter Co Ltd
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2021-11-23
Anticipated expiration: 2031-06-25

Abstract

The utility model discloses a photoelectric sampling lens hood and a photoelectric sampling device, wherein the photoelectric sampling lens hood comprises a shading surface and an annular surrounding front part extending from the edge of the shading surface to one side, at least one light through hole is arranged on the shading surface, an annular flange arranged around the light through hole is arranged on the surface of one side deviating from the annular surrounding front part, and the annular flange is made of flexible materials; the photoelectric sampling device comprises a photoelectric sampling light shield and a photoelectric transmitting and receiving unit which is arranged on the circuit board, wherein the position of the photoelectric sampling light shield on the circuit board corresponds to the position of a light through hole on the photoelectric sampling light shield, and when the photoelectric sampling light shield is assembled with the circuit board, the annular flange surrounds and shields the photoelectric transmitting and receiving unit. The external light is shielded, the influence of the ambient light on the photoelectric sampling of the meter is reduced, and the whole light path is not interfered by the external light.

Description

Photoelectric sampling lens hood and photoelectric sampling device

Technical Field

The utility model relates to an intelligent instrument measures the field, especially relates to a photoelectric sampling lens hood and photoelectric sampling device.

Background

Along with the popularization of intelligent gas meters, higher requirements are provided for the reading accuracy of the intelligent gas meters and the performance of the gas meters, the reading value of a base meter counter needs to be acquired for the existing acquisition of intelligent membrane type gas reading, wherein the roller of the base meter counter is additionally operated according to the used gas amount, and the roller counts one more when one unit amount is used, so that the metering of the gas amount is realized. The reading of the base meter counter generally has three modes of Hall signal acquisition, reed pipe signal acquisition or photoelectric direct-reading counter signal acquisition.

Wherein, adopt hall to get letter and tongue tube to get letter and all need set up a magnet steel on base table counter, then still need to correspond on the main control circuit board of sampling again and set up 2 groups hall receiver or tongue tube, when base table counter end character wheel rotated 1 circle, the main control board can detect the signal that the magnet steel passed through hall receiver or tongue tube to realize the conversion of count value. However, the two modes are easily interfered by an external magnetic field, so that the main control circuit board counts more or fails to count, and thus electricity utilization disputes are caused.

The method of using the photoelectric direct reading counter to fetch information has the problem that the photoelectric signal acquisition is inaccurate due to external signal interference, so how to construct an optical path with small external interference and ensure the accuracy of photoelectric sampling is a problem which needs to be solved urgently.

In the prior art, a sampling mode of a photoelectric direct-reading calculator is adopted, generally, a light ray correlation region is formed by a light generator and a light receiver which are correlated, and the light generator and the light receiver alternately pass through the correlation region through a rotating light shielding part and a light transmitting part, and the light receiver collects whether light signals exist or not. However, the light ray correlation area is easily affected by ambient light, and the light has a divergent characteristic, so that the light transmitted through the whole light path cannot be concentrated, thereby affecting the accuracy of the collected signal.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome not enough of above technique, provide a photoelectricity sampling lens hood and photoelectricity sampling device, reduced the influence of ambient light to strapping table photoelectricity sampling, whole light path does not receive outside light interference.

The utility model overcomes the technical scheme that its technical problem adopted is:

the utility model discloses a first aspect is to provide a photoelectric sampling lens hood, including hiding the plain noodles and enclosing the front of a garment from the annular that the shading face edge extended to one side, be equipped with at least one smooth hole on the shading face, and in deviating from a side surface that the front of a garment was enclosed to the annular is equipped with the encirclement annular flange that smooth hole set up, and annular flange is made by flexible material.

Furthermore, the light shading surface, the annular surrounding front fly and the annular flange are integrally made of flexible materials.

The use of an annular flange of flexible material ensures that during mounting, components on the circuit board mounted opposite thereto are not damaged.

Furthermore, the shading surface comprises a circular plane and an extension surface connected with one part of the edge of the circular plane, and the optical through holes comprise at least one optical through hole arranged on the extension surface and a plurality of optical through holes arranged on the circular plane.

Furthermore, the number of the light-emitting through holes is 3, and the light-emitting through holes are distributed on the circular plane in an isosceles triangle shape.

Light enters from one light inlet through hole through the annular flange and then is conducted to the light outlet through the light path, and light is led out from the annular flange arranged corresponding to the light outlet through hole, so that the whole light path is more closed, and the influence of light of the external environment is avoided.

Furthermore, the inner wall of the annular flange arranged corresponding to the light inlet through hole is in an inverted cone shape.

The light rays of the light inlet source which are gathered and diffused are more favorably passed through the light inlet through hole.

Another aspect of the present invention provides a photoelectric sampling apparatus, including the above-mentioned photoelectric sampling light shield, and a photoelectric transmitting and receiving unit, where the photoelectric transmitting and receiving unit is disposed on a circuit board, and the position of the photoelectric transmitting and receiving unit on the circuit board corresponds to the position of a light through hole on the photoelectric sampling light shield; when the photoelectric sampling light shield is assembled with the circuit board, the annular flange surrounds and shields the photoelectric emission receiving unit.

The annular flange prevents the light emitted by the photoelectric emission receiving unit from leaking, prevents the received light from leaking, and is more favorable for the concentrated transmission of the light.

The photoelectric sampling light shield further comprises a light guide structure, wherein the light guide structure comprises a forked light guide component and a connecting part arranged above the forked light guide component, at least one part of the shape of the connecting part is matched with the annular surrounding part of the photoelectric sampling light shield, and the forked light guide component is used for guiding light entering one light through hole out of other light through holes.

Separate light guide structure and external environment's light through the sampling lens hood, only light guide structure transmits the light that photoemissive receiving unit sent, can prevent that the dust of long-time back external environment from using etc. from to the functional failure that the deposit of luminous receiver tube leads to, and the closed darkroom environment can reduce luminotron luminous intensity to reduce the consumption.

Furthermore, the light guide structure further comprises a shading part, wherein the shading part is at least provided with a light transmission area corresponding to the light through hole, and a transmission rod for driving the light guide structure to rotate is arranged at the center of the shading part.

Further, the light-transmitting area is an arc-shaped opening.

The utility model has the advantages that:

1. the photoelectric sampling light shield is provided with an annular flange which surrounds and shields the photoelectric transmitting and receiving unit, so that the photoelectric transmitting and receiving unit emits light which is not reflected to the external environment, and external light is shielded, and the influence of the ambient light on photoelectric sampling of the photoelectric transmitting and receiving unit is reduced to the minimum extent;

2. the photoelectric sampling light shield is made of flexible materials, so that the safe installation space is ensured, and the circuit board and devices on the circuit are not damaged in the laminating installation process;

3. through light guide structure, will advance light all the way and divide into the multichannel, reduce luminotron quantity, reduce cost to photoelectric sampling device's light path adopts totally closed design, does not receive external environment light influence, can reduce emission lamp power simultaneously, reduces the consumption.

4. The function failure caused by the deposition of dust and the like of the external environment on the light-emitting receiving tube after long-time use can be prevented.

Drawings

Fig. 1 is a schematic front structural view of an embodiment of the photoelectric sampling light shield of the present invention;

fig. 2 is a schematic view of a rear side structure of an embodiment of the photoelectric sampling light shield of the present invention;

fig. 3 is a schematic view of a three-dimensional structure of an embodiment of the photoelectric sampling apparatus of the present invention;

FIG. 4 is a side view of the embodiment of the optoelectronic sampling device of the present invention;

fig. 5 is a schematic structural view of an embodiment of the light guide structure of the present invention;

fig. 6 is a schematic structural view of an embodiment of the bifurcated light guide of the present invention;

fig. 7 is a schematic structural view of an embodiment of the bifurcated light guide of the present invention;

FIG. 8 is a schematic structural view of an embodiment of the shading part of the present invention;

FIG. 9 is a schematic structural view of an embodiment of a connecting portion of the present invention;

fig. 10 is a schematic structural diagram of an embodiment of the sampling device of the present invention;

in the figure, 1-photoelectric sampling light shield; 11-light entrance through hole; 12-light-emitting through holes; 13-shading surface; 14-ring-shaped apron; 15-an annular flange; 2-a bifurcated light guide; 21-light inlet upright post; 22-a light-emitting upright post; 23-a light-emitting channel; 3-a light-shielding portion; 31-a light transmitting region; 32-a transmission rod; 4-a connecting part; 5-a counter; 6-gear, 7-circuit board.

Detailed Description

In order to facilitate better understanding of the present invention for those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments, which are given by way of illustration only and thus do not limit the scope of the present invention.

As shown in fig. 1, the schematic front structure of the photoelectric sampling hood according to this embodiment includes a light shielding surface 13 and an annular surrounding flap 14 extending from an edge of the light shielding surface 13 to one side, the light shielding surface 13 is provided with at least one light through hole, and an annular flange 15 surrounding the light through hole is disposed on a surface of one side away from the annular surrounding flap 14.

In the embodiment of the photoelectric sampling shade of the present invention shown in fig. 1 and 2, the light shading surface 13, the annular surrounding flap 14 and the annular flange 15 are made of a flexible material integrally. The light shielding surface 13 includes a circular plane and an extending surface connected to a portion of the edge of the circular plane.

In an embodiment of the present invention, there are 4 optical through holes, including 3 optical through

holes

12 and 1 optical through hole 11. Wherein, the light-emitting through holes 12 are located on the circular plane and distributed in an isosceles right triangle. In some embodiments, the 3 light-exiting through holes 12 may also adopt other distribution forms of isosceles triangles. And according to the characteristic of light source, the annular flange inner wall that corresponds into light through-hole 11 and set up is the back taper, more is favorable to gathering together the light of the light source of dispersing and passing through into light through-hole 11.

As shown in fig. 3 and fig. 4, for the structure schematic diagram of the photoelectric sampling device of the present invention, including the above-mentioned photoelectric sampling light shield 1 and the photoelectric transmitting and receiving unit configured on the circuit board 7, the position of the photoelectric transmitting and receiving unit on the circuit board 7 corresponds to the position of the light through hole on the photoelectric sampling light shield. The annular flange 15 surrounds and shields the photoemission receiving unit when the photoemission mask is assembled with the circuit board.

In an embodiment of the present invention, the photoemission and receiving unit includes a light emitting diode and three photoelectric receiving tubes, which are respectively corresponding to 1 light inlet through

hole

11 and 3 light outlet through holes 12 of the photoelectric sampling light shield. When the photoelectric sampling light shield is assembled with the circuit board 7, the annular flange 15 corresponding to the light through hole is arranged to completely shield the light emitting diode and the photoelectric receiving tube. The flexible material that the photoelectricity sampling lens hood adopted can protect emitting diode and photoelectric receiving tube, can not cause the damage in installation and use. Meanwhile, the annular flange 15 prevents the light emitted by the light emitting diode from leaking to the external environment, and the light intensity of the light source entering the light guide channel cannot be reduced. The annular flange 15 corresponding to the light-emitting channel hole 12 can prevent external ambient light from entering the photoelectric receiving tube, so that the accuracy of photoelectric sampling cannot be influenced by the external ambient light.

As shown in fig. 5 and fig. 6, for the structure schematic diagram of the light guide structure of the photoelectric sampling device of the present invention, the photoelectric sampling device further includes a light guide structure. In an embodiment of the optoelectronic sampling device of the present invention, the light guiding structure comprises a branched light guiding member 2 and a connecting portion 3 disposed above the branched light guiding member 2. At least one part of the shape of the connecting part 3 is matched with the annular surrounding part 14 of the photoelectric sampling light shield, and the bifurcate light guide part is used for guiding out the light entering the light through hole from the light through hole. In the embodiment of the present invention, the annular front fly 14 completely covers the light guide structure except the transmission rod.

Wherein, the schematic diagram of branching light guide part 2 is as shown in fig. 7, in an embodiment of the utility model, branching light guide part 2 is at least including corresponding one of advancing light stand 21 and a plurality of 3 light-emitting channels 23 that are the ray nature distribution for the extreme point with advancing light stand 21 that advances light through-hole 11 sets up to extend to 3 light-emitting stands 22 that correspond light through-hole 12 and set up respectively, wherein, advance light stand 21 and receive the light of the emitting diode transmission that gets into through advancing light through-hole 11, and derive the light source through light-emitting channels 23 and light-emitting stand 22, thereby expand 3 light sources with one light source of advancing. The 3 light-emitting columns 22 are also distributed in an isosceles triangle shape corresponding to the light-emitting through holes 12. In one embodiment of the present invention, the bifurcated light guide member 2 is integrally formed of a light guide material.

In an embodiment of the present invention, the schematic view of the shading portion 3 is as shown in fig. 8, the shading portion 3 is circular, and at least one light-transmitting area 31 is disposed on the shading portion 3, and a transmission rod 32 for driving the shading portion to rotate is disposed on the shading portion 3. In one embodiment of the present invention, the light-transmitting area 31 is a circular opening with an angle of 225 ° to transmit at least 2 light rays exiting the light pillar. The gear 6 is sleeved on the transmission rod 32, and the shading part 3 is driven to rotate through the transmission of the gear 6.

In an embodiment of the present invention, the light guiding structure further includes a connecting portion 4, and a schematic diagram of the connecting portion 4 is shown in fig. 9, which is installed between the light shielding portion 3 and the branched light guiding member 2, and is used for fixing and connecting the branched light guiding member 2 and the light shielding portion 3. As shown in fig. 8. The positions of the connecting part 4 corresponding to the light inlet column 21, the light outlet column 22 and the transmission rod 32 are provided with through holes, the transmission rod 32 penetrates through the through holes of the connecting part 4 corresponding to the transmission rod 32 from top to bottom, the light inlet column 21 of the forked light guide part 2 penetrates through the through holes of the connecting part 4 corresponding to the light inlet column 21 from bottom to top, the light outlet column 22 of the forked light guide part 2 penetrates through the through holes of the light outlet column 22 corresponding to the connecting part 4 from bottom to top, but the height of the penetrated light outlet column 22 is not more than the height of the shading part 3.

Fig. 10 is a schematic view of the photoelectric sampling apparatus of the present invention. When the last print wheel of the counter of the meter in fig. 10 rotates 1 turn, the corresponding gear is driven to rotate, and the transmission rod 32 is driven to rotate. Thereby rotating the light shielding portion 3. The 1 light emitting diode and the 3 photoelectric receiving tubes are arranged on the circuit board, wherein the position of the light emitting diode corresponds to the light inlet through hole 11 of the photoelectric sampling light shield and does not leak light through the annular flange 15, and the position of the photoelectric receiving tube corresponds to the light outlet through hole 12 of the photoelectric sampling light shield. The photoelectric sampling light shield is covered above the branched light guiding structure and is not penetrated by ambient light through the annular flange 15. Correspondingly, the position of the light inlet through hole 11 corresponds to the position of the light inlet upright post 21, and the position of the light outlet through hole 12 corresponds to the position of the light outlet upright post 22. Carry out the photoelectricity sampling to 2 light-emitting stand columns 22 through the control chip who sets up at the circuit board, at any moment, shading portion 3 pivoted in-process makes arbitrary 2 in 3 light-emitting stand columns 22 not shelter from, and the main control board reads the reading of strapping table through gathering 3 light-emitting channel's code. Adopt the photoelectric sampling lens hood and the photoelectric sampling device simple structure of this application, do not receive external environment light influence, make the photoelectric sampling precision of strapping table higher.

The foregoing has described only the basic principles and preferred embodiments of the present invention and numerous changes and modifications may be made by those skilled in the art in light of the above teachings and shall fall within the scope of the present invention.

Claims

1. The utility model provides a photoelectricity sampling lens hood, its characterized in that encloses the front of a garment including shading the plain noodles and extending to one side from the shading face edge, be equipped with at least one light through hole on the shading face to a side surface that deviates from the annular encloses the front of a garment is equipped with the ring flange that encircles the light through hole sets up, ring flange is made by flexible material.

2. The optoelectronic sampling light shield of claim 1, wherein: the shading surface, the annular surrounding front fly and the annular flange are integrally made of flexible materials.

3. The optoelectronic sampling light shield of claim 1, wherein: the shading surface comprises a circular plane and an extension surface connected with a part of the edge of the circular plane, and the light through holes comprise at least one light inlet through hole arranged on the extension surface and a plurality of light outlet through holes arranged on the circular plane.

4. The optoelectronic sampling light shield of claim 3, wherein: the number of the light-emitting through holes is 3, and the light-emitting through holes are distributed on the circular plane in an isosceles triangle shape.

5. The optoelectronic sampling light shield of claim 3, wherein: the inner wall of the annular flange arranged corresponding to the light inlet through hole is in an inverted cone shape.

6. An optoelectronic sampling device, comprising at least an optoelectronic sampling light shield according to any one of claims 1 to 5, and an optoelectronic transmitting and receiving unit, wherein the optoelectronic transmitting and receiving unit is disposed on a circuit board and has a position on the circuit board corresponding to a position of an optical through hole on the optoelectronic sampling light shield; when the photoelectric sampling light shield is assembled with the circuit board, the annular flange surrounds and shields the photoelectric emission receiving unit.

7. The optoelectronic sampling device of claim 6, further comprising a light guiding structure, wherein the light guiding structure comprises a bifurcated light guiding member and a connecting portion disposed above the bifurcated light guiding member, at least a portion of the shape of the connecting portion is adapted to the annular surrounding flap of the optoelectronic sampling light shield, and the bifurcated light guiding member is configured to guide light entering from one light through hole out of other light through holes.

8. The optoelectronic sampling device of claim 7, wherein the light guiding structure further comprises a light shielding portion, the light shielding portion has at least one light-transmitting region corresponding to the light-passing hole, and a driving rod is disposed at the center of the light shielding portion for driving the light-transmitting region to rotate.

9. The optoelectronic sampling device of claim 8, wherein the light transmissive region is a circular arc shaped opening.