CN210166520U - High-precision infrared optical rainfall sensor - Google Patents
High-precision infrared optical rainfall sensor Download PDFInfo
- Publication number
- CN210166520U CN210166520U CN201920708850.5U CN201920708850U CN210166520U CN 210166520 U CN210166520 U CN 210166520U CN 201920708850 U CN201920708850 U CN 201920708850U CN 210166520 U CN210166520 U CN 210166520U
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- infrared light
- light emitting
- photodiode
- array
- infrared
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Abstract
The utility model discloses an infrared optics rainfall sensor of high accuracy belongs to the sensor field, including optics rainfall inductive probe, bottom fixed plate, dead lever, waterproof box, red line array and photodiode array. A horizontal optical line net is formed by the red line array and the photodiode array, in the rainfall falling process, raindrops can block infrared rays, then corresponding photodiodes of the photodiode array can not receive infrared rays, then the size and the density of the raindrops can be known according to the number of the blocked infrared rays and the size and the interval of the infrared rays, finally the size and the density of the raindrops are measured by the optical rainfall sensing probe on the basis of the light refraction of the falling raindrops, and the size of the detected rainfall is obtained by comprehensively averaging the result data detected by the two sides, so that the detection is more accurate.
Description
Technical Field
The utility model relates to a sensor field especially relates to an infrared optics rainfall sensor of high accuracy.
Background
The traditional tipping bucket type rain gauge, the traditional dripping instrument and the like have complex structures, need to be waterproof and antifreezing, and have low sensitivity and inflexible use when measuring rainfall. The existing rainfall sensor generally detects whether there is raindrop and the size of the raindrop by using the principle of refraction and reflection of light. An optical sensing device and a rain or light sensor comprising the same, as in application No. CN200810144101.0, wherein the sensing unit comprises a light emitter, a light receiver and a lens plate, the lens plate is used for coupling the light beam emitted by the light emitter into the window glass, coupling the light beam out of the window glass and guiding the light beam to the light receiver, the surface of the lens plate facing the light emitter or the light receiver and the surface facing the window glass are provided with fresnel lens structures, but in this way, the light is emitted from the light emitter in a wide range, only a small part of the light can be utilized for raindrop detection, and only a small part of the light enters the light receiver, so that the detection result is not accurate enough, and the detection sensitivity is low.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an infrared optics rainfall sensor of high accuracy solves the technical problem that the rainfall sensor detects the precision low. When the existing optical rainfall sensor is actually used, the detection precision is not high, meanwhile, the sensor is difficult to measure after raining for a period of time, and water always exists on the whole reflecting glass, so that the detection data become inaccurate very later, the application scheme needs to be designed to be combined to enable the detection precision to be higher, and the detection can be carried out for a long time, and the precision becomes high.
A high-precision infrared optical rainfall sensor comprises an optical rainfall sensing probe, a bottom fixing plate, a fixing rod, a waterproof box, a red line array and a photodiode array, the optical rainfall sensing probe is arranged on the bottom fixing plate, the fixing rod is arranged on the bottom fixing plate, and are arranged at the two corresponding sides of the optical rainfall sensing probe, the waterproof box is arranged on the fixed rod, and are arranged oppositely, the red line array and the photodiode array are respectively arranged at the opposite sides of the two waterproof boxes, each infrared light emitting tube of the red line array horizontally corresponds to one photodiode of the photodiode array, an infrared array driving circuit is arranged in a waterproof box provided with the red line array, and a photodiode array amplifier circuit is arranged in the waterproof box provided with the photodiode array and is connected with the optical rainfall sensing probe through a lead;
the optical rainfall sensing probe comprises a circular base support, a semicircular transparent cover is buckled above the base support, two transparent bosses are uniformly arranged on the inner surface of the transparent cover by taking the center of the inner surface as a symmetrical center, the top surfaces of the transparent bosses are parallel to a horizontal plane, a circuit board is arranged in a space formed by the transparent cover and the base support, a power module, a controller circuit connected with the power module, a dial switch connected with the controller circuit, a driving module, an amplifier, an output circuit, an infrared light emitting tube connected with the driving module and a photodiode connected with the amplifier are arranged on the circuit board, the number of the infrared light emitting tube and the number of the photodiode are respectively 1, the infrared light emitting tube and the photodiode are correspondingly arranged in a straight line on the circuit board, a black shading sleeve is arranged between the circuit board and the two transparent bosses, and the black shading sleeve consists of a middle annular ring and two shading rings uniformly distributed around the middle annular, each shading ring corresponds to one transparent boss, the circuit board and the transparent bosses clamp the shading rings, the shading rings cover the outer sides of the infrared light-emitting tubes or the photodiodes, the controller circuit enables the infrared light-emitting tubes to emit light through the driving module, the emitted light is received by the corresponding photodiodes through the transparent covers, and then the signals are amplified by the amplifier and transmitted to the controller circuit.
Furthermore, the circuit board also comprises an output circuit, and the controller circuit is connected with external data receiving equipment through the output circuit and transmits the collected rainfall to the external equipment.
Furthermore, the number of the infrared light emitting diodes of the red line array is the same as that of the photodiodes of the photodiode array, and the infrared light emitting diodes are in one-to-one horizontal correspondence, and each photodiode receives a signal of the corresponding infrared light emitting diode.
Furthermore, the diameter of the infrared light beam emitted by the infrared light emitting diodes on the red line array is 5-8mm, the distance between the infrared light emitting diodes and the infrared light emitting diodes is 1-2mm, and the distance between the photodiodes on the photodiode array is 1-2mm and is the same as the distance between the infrared light emitting diodes.
Furthermore, an installation handle is fixed on the bottom fixing plate and used for installing the sensor on an external wading pen, and a rainwater outflow hole is formed in the bottom fixing plate and is formed in the side edge of the optical rainfall sensing probe.
A base plate is arranged between the circuit board and the bottom support, the transparent cover and the bottom support are fixedly connected through screws, and connecting columns matched with the screws are arranged on the inner surface of the transparent cover.
The utility model adopts the above technical scheme, the utility model discloses following technological effect has:
the utility model discloses a red line array and photodiode array have formed a horizontal optical network, at rainfall whereabouts in-process, the raindrop can block the infrared ray, then make the corresponding photodiode of photodiode array can not receive the infrared light, then just can know the size and the density of raindrop according to quantity and infrared ray size and the interval of the infrared ray that blocks, the size and the density of raindrop are measured to the raindrop of whereabouts through the principle of light refraction to the raindrop that passes through optics rainfall response probe again at last, thereby synthesize the average value with the result data that detects both sides and buy the size that obtains the detection rainfall, make the more accuracy of detection.
Drawings
Fig. 1 is a cross-sectional view of the present invention.
Fig. 2 is a plan view of the present invention.
Fig. 3 is a cross-sectional view of the optical rainfall sensing probe of the present invention.
Fig. 4 is a schematic structural diagram of the black light-shielding sleeve of the optical rainfall sensor of the present invention.
Fig. 5 is a block diagram of the circuit structure of the present invention.
Reference numbers in the figures: 1-mounting a handle, 2-a transparent cover, 3-a transparent boss, 4-a light emitting diode, 5-a black shading sleeve, 501-a middle annular ring, 502-a shading ring, 6-a bottom support, 7-a backing plate, 8-a circuit board, 9-a photodiode, 10-an infrared light emitting tube, 11-a bottom fixing plate, 12-a rainwater outflow hole, 13-a fixing rod, 14-a waterproof box, 15-a red line array and 16-a photodiode array.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and by referring to preferred embodiments. It should be understood, however, that the numerous specific details set forth in the specification are merely set forth to provide a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.
As shown in fig. 1, according to the utility model discloses an infrared optical rainfall sensor structure sketch map of high accuracy, including optics rainfall inductive probe, bottom fixed plate 11, dead lever 13, waterproof box 14, red line array 15 and photodiode array 16. The optical rainfall sensing probe is arranged on the bottom fixing plate 11, and the fixing rods 13 are arranged on the bottom fixing plate 11 and are arranged on two corresponding sides of the optical rainfall sensing probe. The waterproof boxes are arranged on the fixing rods 13 and are arranged oppositely. The red line array 15 and the photodiode array 16 are respectively disposed on opposite sides of the two waterproof cases 14. The red line array 15 and the photodiode array 16 are each provided with waterproof transparent glass on the outside. Each infrared light emitting tube of the red line array 15 horizontally corresponds to one photodiode of the photodiode array 16, an infrared array driving circuit is arranged in a waterproof box provided with the red line array 15, a photodiode array 16 amplifier circuit is arranged in the waterproof box provided with the photodiode array and is connected with the optical rainfall sensing probe through a lead, detected data are amplified and then transmitted to a processor for processing, the processing process is to calculate the specific size of raindrops according to the number of blocked infrared rays, meanwhile, the rainfall size is determined according to the blocked density, and then the average value processing is carried out on the rainfall size and the optical rainfall sensing probe to obtain the detected rainfall size.
The optical rainfall sensing probe comprises a circular bottom support 6 with a handle 1, and a semicircular transparent cover 2 is buckled above the bottom support 6. The inner surface of the transparent cover 2 is uniformly provided with two transparent bosses 3 by taking the center thereof as a symmetrical center, and the top surfaces of the transparent bosses 3 are parallel to the horizontal plane. A circuit board 8 is arranged in a space formed by the transparent cover 2 and the bottom support 6, and a power module, a CPU connected with the power module, a dial switch connected with the CPU, a driving module, an amplifier, an output module, an infrared light emitting tube 10 connected with the driving module, and a photodiode 9 connected with the amplifier and used for receiving light emitted by the infrared light emitting tube 10 are arranged on the circuit board 8. The quantity of infrared luminous tube 10 and photodiode 9 is two respectively, is the cross after the one-to-one and arranges on circuit board 8, be equipped with black shading cover 5 between circuit board 8 and two transparent boss 3, black shading cover 5 comprises middle part annular ring 501 and evenly distributed in middle part annular ring 501 two shading rings 502 all around, and every shading ring 502 corresponds a transparent boss 3, circuit board 8 and transparent boss 3 are with shading ring 502 centre gripping wherein, and shading ring 502 cover in infrared luminous tube 10 or photodiode 9's the outside. The CPU makes the infrared luminotron 10 give out light through the drive module, the light that sends is received by the correspondent photodiode 9 through the transparent cover 2, and then send to CPU (controller circuit) after amplifying the signal by the amplifier, CPU uses STM32 series chip, exports after CPU analysis calculation, the centre of the said circuit board 8 has the luminescent diode 4 connected with output module in parallel, used for showing directly
And the rainfall is shown to reach a set value and is used for monitoring whether the equipment normally operates. And a backing plate 7 is arranged between the circuit board 8 and the bottom support 6 so as to adjust the gap. The transparent cover 2 is fixedly connected with the bottom support 6 through screws, and a connecting column (omitted in the figure) matched with the screws is arranged on the inner surface of the transparent cover 2.
The utility model discloses utilize reflection, refraction and the scattering principle of light, arouse the change of light path when the raindrop touches the surface of translucent cover 2 to make received light change, in order to realize detecting the rainfall. In the embodiment, 890nm infrared light is used as a detection light source, and a silicon photodiode matched with the infrared light is used as a receiving device.
The circuit board further comprises an output circuit, and the controller circuit is connected with external data receiving equipment through the output circuit and transmits the collected rainfall to the external equipment. The number of the infrared light emitting diodes of the red line array is the same as that of the photodiodes of the photodiode array, the infrared light emitting diodes are in one-to-one horizontal correspondence, and each photodiode receives signals of the corresponding infrared light emitting diode. The infrared light beam emitted by the infrared light emitting diodes on the red line array is 5-8mm in diameter, the distance between the infrared light emitting diodes is 1-2mm, and the distance between the photodiodes on the photodiode array is 1-2mm and is the same as the distance between the infrared light emitting diodes. The bottom fixing plate is fixedly provided with an installation handle used for installing the sensor on an external wading pen, and the bottom fixing plate is provided with a rainwater outflow hole which is arranged at the side edge of the optical rainfall sensing probe. A base plate is arranged between the circuit board and the bottom support, the transparent cover and the bottom support are fixedly connected through screws, and connecting columns matched with the screws are arranged on the inner surface of the transparent cover.
Wherein the two transparent bosses 3 and the two waterproof boxes 14 form a cross structure. The dial switch uses the existing dial switch, and the specific model is purchased according to the needs of the implementing personnel. The infrared array driving circuit and the driving circuit both use the existing infrared light emitting tube driving circuit, and the specific model is purchased according to the requirements of implementers. The photodiode array amplifier circuit and the amplifying circuit both use the existing active second-order discharge circuit. The power supply circuit is a 5V stabilized power supply circuit. The circuit schematic diagrams are not given (in the drawings), and are all schematic diagrams found on the existing network or published already. Or real-time personnel purchase the corresponding model module, and the implementation of the scheme can also be realized according to the development instruction.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. The utility model provides an infrared optical rainfall sensor of high accuracy which characterized in that: the optical rainfall sensing probe is arranged on the bottom fixing plate, the fixing rods are arranged on the bottom fixing plate and are arranged on two sides corresponding to the optical rainfall sensing probe, the waterproof boxes are arranged on the fixing rods and are arranged oppositely, the red line array and the photodiode array are respectively arranged on opposite sides of the two waterproof boxes, each infrared light emitting tube of the red line array horizontally corresponds to one photodiode of the photodiode array, an infrared array driving circuit is arranged in each waterproof box provided with the red line array, and a photodiode array amplifier circuit is arranged in each waterproof box provided with the photodiode array and is connected with the optical rainfall sensing probe through a lead;
the optical rainfall sensing probe comprises a circular base support, a semicircular transparent cover is buckled above the base support, two transparent bosses are uniformly arranged on the inner surface of the transparent cover by taking the center of the inner surface as a symmetrical center, the top surfaces of the transparent bosses are parallel to a horizontal plane, a circuit board is arranged in a space formed by the transparent cover and the base support, a power module, a controller circuit connected with the power module, a dial switch connected with the controller circuit, a driving module, an amplifier, an output circuit, an infrared light emitting tube connected with the driving module and a photodiode connected with the amplifier are arranged on the circuit board, the number of the infrared light emitting tube and the number of the photodiode are respectively 1, the infrared light emitting tube and the photodiode are correspondingly arranged in a straight line on the circuit board, a black shading sleeve is arranged between the circuit board and the two transparent bosses, and the black shading sleeve consists of a middle annular ring and two shading rings uniformly distributed around the middle annular, each shading ring corresponds to one transparent boss, the circuit board and the transparent bosses clamp the shading rings, the shading rings cover the outer sides of the infrared light-emitting tubes or the photodiodes, the controller circuit enables the infrared light-emitting tubes to emit light through the driving module, the emitted light is received by the corresponding photodiodes through the transparent covers, and then the signals are amplified by the amplifier and transmitted to the controller circuit.
2. The high precision infrared optical rain sensor according to claim 1, characterized in that: the circuit board further comprises an output circuit, and the controller circuit is connected with external data receiving equipment through the output circuit and transmits the collected rainfall to the external equipment.
3. The high precision infrared optical rain sensor according to claim 1, characterized in that: the number of the infrared light emitting diodes of the red line array is the same as that of the photodiodes of the photodiode array, the infrared light emitting diodes are in one-to-one horizontal correspondence, and each photodiode receives signals of the corresponding infrared light emitting diode.
4. A high precision infrared optical rain sensor according to claim 3, characterized in that: the infrared light beam emitted by the infrared light emitting diodes on the red line array is 5-8mm in diameter, the distance between the infrared light emitting diodes is 1-2mm, and the distance between the photodiodes on the photodiode array is 1-2mm and is the same as the distance between the infrared light emitting diodes.
5. The high precision infrared optical rain sensor according to claim 1, characterized in that: the bottom fixing plate is fixedly provided with an installation handle used for installing the sensor on an external wading pen, and the bottom fixing plate is provided with a rainwater outflow hole which is arranged at the side edge of the optical rainfall sensing probe.
6. The high precision infrared optical rain sensor according to claim 1, characterized in that: a base plate is arranged between the circuit board and the bottom support, the transparent cover and the bottom support are fixedly connected through screws, and a connecting column matched with the screws is arranged on the inner surface of the transparent cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920708850.5U CN210166520U (en) | 2019-05-16 | 2019-05-16 | High-precision infrared optical rainfall sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920708850.5U CN210166520U (en) | 2019-05-16 | 2019-05-16 | High-precision infrared optical rainfall sensor |
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| Publication Number | Publication Date |
|---|---|
| CN210166520U true CN210166520U (en) | 2020-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920708850.5U Expired - Fee Related CN210166520U (en) | 2019-05-16 | 2019-05-16 | High-precision infrared optical rainfall sensor |
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| Country | Link |
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| CN (1) | CN210166520U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112904459A (en) * | 2021-04-21 | 2021-06-04 | 山东仁科测控技术有限公司 | Rain gauge |
-
2019
- 2019-05-16 CN CN201920708850.5U patent/CN210166520U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112904459A (en) * | 2021-04-21 | 2021-06-04 | 山东仁科测控技术有限公司 | Rain gauge |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200320 Termination date: 20210516 |