CN221077768U - Water level detection device and steam box - Google Patents
Water level detection device and steam box Download PDFInfo
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- CN221077768U CN221077768U CN202323199464.3U CN202323199464U CN221077768U CN 221077768 U CN221077768 U CN 221077768U CN 202323199464 U CN202323199464 U CN 202323199464U CN 221077768 U CN221077768 U CN 221077768U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 172
- 238000001514 detection method Methods 0.000 title claims abstract description 41
- 238000005070 sampling Methods 0.000 claims abstract description 94
- 230000003287 optical effect Effects 0.000 claims abstract description 31
- 230000000712 assembly Effects 0.000 claims abstract description 26
- 238000000429 assembly Methods 0.000 claims abstract description 26
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The water level detection device is applied to a water tank, and comprises a light emitting module, a light receiving module and a processing module, wherein the light receiving module comprises at least two light sampling assemblies, and the light sampling assemblies output sampling electric signals through the same sampling interface; the light-emitting module is arranged above the water surface of the water tank and is used for emitting light signals passing through the water surface; the light receiving module is arranged below the water surface of the water tank and is used for outputting the corresponding sampling electric signals according to the light sampling assembly which receives the light signals; the processing module is electrically connected with the light receiving module and is used for receiving the sampled electrical signals to obtain corresponding water level detection results. The refraction of the optical signals is used for measuring the water level, so that the electrical element is isolated from water, the safety is better, the plurality of optical sampling elements with the same sampling interface are adopted, the interface resources are saved, and the interface structure is optimized.
Description
Technical Field
The disclosure relates to the technical field of household appliances, in particular to a water level detection device and a steam box.
Background
There are three main water level detection devices for water tanks in the current market. The electrode type water level detecting device is characterized in that resistance mutation is generated when water contacts an electrode, the water level is measured by utilizing the conductivity of the water, but leakage at an electrode sealing position, electrode grounding, electrode open-circuit, corrosion of a measuring head of the electrode, and wire open-circuit, short-circuit and grounding of the electrode connected to a display instrument are easily caused.
The float type water level detecting device is an electric transmission and data transmission water level gauge which uses the float to induce the lifting of the water level, and converts the rotation angle provided by the float into increment electric pulse or binary coded pulse for remote transmission; however, the floats are required to be arranged in the water tank, and because the steam box needs to be frequently added with water, the floats and the detection line pole thereof are inconvenient to set, the water and electricity isolation cannot be realized, and the steam box has potential safety hazards
The ultrasonic ranging water level detection device utilizes the fact that ultrasonic waves are reflected back after touching an object, and the distance can be calculated according to the time difference and the wave speed; however, the needle has the problems of lower precision, easy shielding by objects and high equipment cost.
Disclosure of Invention
The technical problem to be solved by the present disclosure is to overcome the defects of poor safety and low precision of the water level detection device in the prior art, and provide a water level detection device and a steam box.
The technical problems are solved by the following technical scheme:
In a first aspect, a water level detection device is provided and applied to a water tank, the water level detection device comprises a light emitting module, a light receiving module and a processing module, the light receiving module comprises at least two light sampling assemblies, and the light sampling assemblies output sampling electric signals through the same sampling interface;
The light-emitting module is arranged above the water surface of the water tank and is used for emitting light signals passing through the water surface;
The light receiving module is arranged below the water surface of the water tank and is used for outputting the corresponding sampling electric signals according to the light sampling assembly which receives the light signals;
The processing module is electrically connected with the light receiving module and is used for receiving the sampled electrical signals to obtain corresponding water level detection results.
Preferably, the optical sampling component is at least one of a photoelectric gate, a photodiode, a phototriode and a photoresistor;
And/or, the electrical parameters of each of the optical sampling assemblies are different.
Preferably, the light emitting module is a laser emitter.
Preferably, the light emitting module comprises a visible light source and a light condensing assembly;
The light focusing assembly is arranged between the visible light source and the water surface and is used for converging light rays of the visible light source as the light signals.
Preferably, the condensing assembly includes at least one of a lens, a concave mirror, and a convex mirror.
Preferably, each of the light sampling assemblies is disposed in series with each other.
Preferably, the optical sampling assembly is arranged along a projection area of the optical signal at the bottom of the water tank;
The projection area comprises a first projection area representing a normal water level and a second projection area representing a low water level;
At least one of the light sampling assemblies is disposed in the second projection region.
Preferably, the light sampling components are equally spaced along the projection area;
And/or, the light receiving module further comprises a waterproof component, and the light sampling component is fixedly connected with the bottom of the water tank through the waterproof component.
Preferably, the sampling interface is an a/D (Analog to Digtial Converter, analog to digital conversion) interface.
In a second aspect, a steam box is provided, the steam box comprising a water tank and the water level detection device of the first aspect.
On the basis of conforming to the common knowledge in the field, the above preferred conditions can be arbitrarily combined to obtain the preferred examples of the application.
The positive progress effect of the present disclosure is: the refraction of the optical signals is used for measuring the water level, so that the electrical element is isolated from water, the safety is better, the plurality of optical sampling elements with the same sampling interface are adopted, the interface resources are saved, and the interface structure is optimized.
Drawings
Fig. 1 is a first structural schematic diagram of a water level detection device of embodiment 1 of the present disclosure;
Fig. 2 is a second structural schematic diagram of a water level detection device of embodiment 1 of the present disclosure;
fig. 3 is a schematic structural view of a light receiving module of embodiment 1 of the present disclosure.
Description of the reference numerals
Water tank 1
Surface of water 10
Light emitting module 2
Light receiving module 3
Optical sampling assembly 31
Optical signal 4
Processor 5
Detailed Description
The present disclosure is further illustrated by way of examples below, but is not thereby limited to the scope of the examples described.
Example 1
The embodiment provides a water level detection device, as shown in fig. 1, which is applied to a water tank 1, wherein the water level detection device comprises a light emitting module 2, a light receiving module 3 and a processing module, the light receiving module 3 comprises at least two light sampling assemblies 31, and the light sampling assemblies 31 output sampling electric signals through the same sampling interface;
The light emitting module 2 is arranged above the water surface 10 of the water tank 1 and is used for emitting light signals 4 passing through the water surface 10;
the light receiving module 3 is arranged below the water surface 10 of the water tank 1 and is used for outputting the corresponding sampling electric signal according to the light sampling assembly 31 which receives the light signal 4;
The processing module is electrically connected with the light receiving module 3 and is used for receiving the sampled electrical signals to obtain corresponding water level detection results.
In this scheme, the water level monitoring device utilizes the light emitting module 2 to generate the optical signal 4 based on the photoelectric detection principle, inputs the optical signal 4 into the water surface 10 of the water tank 1 at a preset angle, and drops on the light receiving module 3 after the optical signal 4 is absorbed into the water of the water tank 1, when the water level changes, the position of the refracted optical signal 4 falling on the light receiving module 3 after passing through the water surface 10 also changes along with the change of the water level. Illustratively, as shown in fig. 2, the light emitting module 2 is injected into the water surface 10 of the water tank 1 at an angle of 45 ° with respect to the water surface 10, the light signal 4 is refracted by air into the water, the refractive index of the water is generally 1.334, the refractive index of the water is equal to the incident angle of the water surface according to the refractive law n=sinθ Into (I) /sinθ Folding device ,θInto (I) , θ Folding device is the refractive angle of the water surface, and sinθ Folding device ＝sin45°/1.334≈0.5299,θ Folding device =arcsin (0.5299) ≡32°. As shown in the following figure, when the water level changes, the incident light changes with the incident point on the water surface, the irradiation point of the refracted light on the bottom of the water tank changes after passing through the water tank 1, at this time, the water level increment is set as y, the lateral offset of the refracted light on the bottom of the water tank or on the plane parallel to the horizontal plane is set as x, according to tan θ=opposite side/adjacent side, x=x2—x1=y× (tan 45 ° -tan32 °), since (tan 45 ° -tan32 °) is a constant, x is proportional to y, that is, the change amount of the water level is in linear relation with the lateral offset of the refracted light.
The light receiving module 3 comprises at least two light sampling components, and when the water level is half of the water level of the water tank 1, one light sampling module is illustratively arranged, the light signal 4 is refracted at the corresponding position of the light receiving module 3 through the water surface 10, and when the water level is at the water level of the water tank 1, the other light sampling module is arranged, the light signal 4 is refracted at the corresponding position of the light receiving module 3 through the water surface 10; when the water level in the water tank 1 is reduced to a half water level of the water tank 1 and an alarm water level of the water tank 1 based on the water consumption condition, a corresponding sampling signal is generated based on the optical sampling module which receives the optical signal 4, and the sampling signal is output to the processing module through the sampling interface to obtain a corresponding water level detection result. In the scheme, only one sampling interface is needed to transmit sampling data, so that the occupation of a singlechip interface is greatly saved, interface resources are saved, and an interface structure is optimized.
As one implementation, the optical sampling component 31 is at least one of a photogate, a photodiode, a phototransistor, and a photoresistor;
In this scheme, the light sampling assembly 31 can select to adopt the combination of one or more photosensitive elements according to the actual use requirement, when adopting different types of light sampling assemblies 31, the light signal 4 outputs different sampling signals when shining different types of light sampling assemblies 31, and the processor 5 can obtain corresponding water level monitoring results according to the received sampling signals.
As one possible way, the electrical parameters of each of the optical sampling assemblies 31 are different.
In this solution, when the same type of optical sampling assembly 31 is used, each optical sampling assembly 31 is set to a different electrical parameter; illustratively, the light receiving module 3 includes at least two photoresistors as the light sampling component 31, where each photoresistor has a different resistance value, or adopts a different specification of photoresistors, and when the light receiving module 3 is irradiated by the optical signal 4, the corresponding adopting signal can be output according to the resistance value change of the different irradiated photoresistors.
As an achievable way, the light emitting module 2 is a laser emitter.
In this embodiment, the light emitting module 2 may employ laser emitters with different power and specifications according to actual use requirements, alternatively, the laser emitters may employ infrared laser emitters, and the corresponding light receiving module 3 includes a light sampling component 31 for receiving infrared rays. The laser transmitter is selected to emit the optical signal 4 with high precision and interference resistance, so that the accuracy of water level monitoring is improved.
As one possible way, the light emitting module 2 includes a visible light source and a light condensing assembly;
The light focusing assembly is arranged between the visible light source and the water surface 10 and is used for converging the light rays of the visible light source as the light signals 4.
In this scheme, can adopt the LED lamp that can modulate as visible light source, set up visible light source in the light shade, set up corresponding spotlight subassembly in the opening part of light shade, make visible light source through spotlight subassembly generate corresponding light signal 4, the light signal 4 after gathering can pass the surface of water 10 of water tank 1 and shine on the light receiving module 3, utilize visible light source as light emitting module 2 can reduce the consumption of light emitting module 2.
As one implementation, the condensing assembly includes at least one of a lens, a concave mirror, a convex mirror, and a reflecting mirror.
In this scheme, the corresponding light condensing assembly may be configured according to the light source parameters of the visible light source when in use, the angle of the light condensing assembly may be adjusted based on the arrangement position and power of the visible light source and the arrangement position of the light receiving module 3, and the light condensing assembly may include one of a lens, a concave mirror, a convex mirror and a reflecting mirror, or a combination of a plurality of light condensing assemblies of the lens, the concave mirror, the convex mirror and the reflecting mirror. By improving the flexibility of arrangement of the light emitting module 2 and the light receiving module 3 by adjusting the condensing assembly, the light source selectable range of the light emitting module 2 and the selectable range of the light source position are increased.
As one possible way, each of the light sampling assemblies 31 is arranged in series with each other.
In this scheme, by serially connecting the light sampling components 31 in the light receiving module 3, as shown in fig. 3, for example, the light receiving module 3 includes a plurality of photoresistors connected in series, each photoresistor has different specifications, when the light signal 4 irradiates any photoresistor, the total resistance of the photoresistor serial circuit corresponding to the light receiving module 3 correspondingly changes, a corresponding resistance sampling signal is output from a single sampling interface, and the processor 5 obtains the irradiated photoresistor according to the received resistance sampling signal and obtains a corresponding water level detection result according to the position information of the photoresistor. Only one sampling interface is needed to transmit sampling data, so that the occupation of a singlechip interface is greatly saved, interface resources are saved, and an interface structure is optimized.
As an achievable way, the light sampling assembly 31 is arranged along a projection area of the light signal 4 at the bottom of the water tank 1;
The projection area comprises a first projection area representing a normal water level and a second projection area representing a low water level;
At least one of the light sampling assemblies 31 is disposed in the second projection region.
In this scheme, according to the projection area covered by the light signal 4 after being refracted by the water surface 10 in the irradiation area of the light signal 4, the water tank 1 is made of a light-permeable material, the projection area of the light signal 4 can be arranged on the side surface or the bottom surface of the water tank 1 according to actual use requirements, the light receiving module 3 is arranged in the coverage range of the projection area, and at least one light adoption component is arranged in the second projection area representing the low water level, so that when the water level in the water tank 1 is reduced to the low water level, the water level detection device can generate a corresponding water level detection result.
As one possible way, the light sampling assemblies 31 are equally spaced along the projection area;
In this scheme, the change amount of the water level is calculated to be in a linear relationship with the change amount of the distance of the light rays refracted by the optical signal 4, so that the sampling points can be uniformly arranged, the optical sampling assemblies 31 are arranged at equal intervals along the projection area of the optical signal 4, the positions of the optical sampling assemblies 31 correspond to the scales of the water level, the water tank 1 is typically provided with a maximum water level and a minimum water level, the water level is divided into seven sections based on continuous consumption of water in the water tank 1, six optical sampling assemblies 31 are correspondingly arranged as water level sampling points, each water level sampling point corresponds to the water level scale value of the water tank 1, the water level information of the last water level sampling point is reserved in the water level reduction process, the water level values in the two water level scale sections are regarded as the values of the last water level sampling point until the water level is reduced to the next water level sampling point, and when the water level is reduced to the lowest water level, the processor 5 outputs the detection result of the lowest water level and performs alarm processing. The accuracy of the water level detection result is improved by arranging the optical sampling assemblies 31 at equal intervals.
As an achievable manner, the light receiving module 3 further includes a waterproof component, and the light sampling component 31 is fixedly connected with the bottom of the water tank 1 through the waterproof component.
In this scheme, realize the sealed to individual module in the water and electricity detection device through waterproof subassembly, exemplary, waterproof subassembly adopts transparent plastic. Realizes the water-electricity isolation between the water in the water tank 1 and the water level detection device, and improves the use safety of the water level detection device.
As one implementation, the sampling interface is an a/D interface.
In this scheme, analog sampling is performed by using a/D, and the analog signal output by the optical sampling component 31 selected in the optical receiving module 3 is transmitted to the processor 5. Only one sampling interface is needed to transmit sampling data, so that the occupation of a singlechip interface is greatly saved, interface resources are saved, and an interface structure is optimized.
Example 2
The present embodiment provides a steam box including a water tank and the water level detection device of embodiment 1.
The steam box provided by the embodiment saves the sampling interface of the processor 5 through the water level monitoring device of the embodiment 1, only one sampling interface is needed for transmitting sampling data, the occupation of a singlechip interface is greatly saved, interface resources are saved, and the interface structure is optimized.
While specific embodiments of the present disclosure have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the disclosure is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the disclosure, but such changes and modifications fall within the scope of the disclosure.
Claims (10)
1. The water level detection device is characterized by being applied to a water tank, and comprises a light emitting module, a light receiving module and a processing module, wherein the light receiving module comprises at least two light sampling assemblies, and the light sampling assemblies output sampling electric signals through the same sampling interface;
The light-emitting module is arranged above the water surface of the water tank and is used for emitting light signals passing through the water surface;
The light receiving module is arranged below the water surface of the water tank and is used for outputting the corresponding sampling electric signals according to the light sampling assembly which receives the light signals;
The processing module is electrically connected with the light receiving module and is used for receiving the sampled electrical signals to obtain corresponding water level detection results.
2. The water level detection device of claim 1, wherein the light sampling component is at least one of a photogate, a photodiode, a phototransistor, and a photoresistor;
And/or, the electrical parameters of each of the optical sampling assemblies are different.
3. The water level detection apparatus of claim 1, wherein the light emitting module is a laser emitter.
4. The water level detection apparatus according to claim 1, wherein the light emitting module includes a visible light source and a light condensing assembly;
The light focusing assembly is arranged between the visible light source and the water surface and is used for converging light rays of the visible light source as the light signals.
5. The water level detection device of claim 4, wherein the light focusing assembly comprises at least one of a lens, a concave mirror, and a convex mirror.
6. The water level detection apparatus of claim 1, wherein each of the light sampling assemblies is disposed in series with each other.
7. The water level detection device of claim 1, wherein the light sampling assembly is disposed along a projected area of the light signal at a bottom of the water tank;
The projection area comprises a first projection area representing a normal water level and a second projection area representing a low water level;
At least one of the light sampling assemblies is disposed in the second projection region.
8. The water level detection device of claim 7, wherein the light sampling assemblies are equally spaced along the projection area;
And/or, the light receiving module further comprises a waterproof component, and the light sampling component is fixedly connected with the bottom of the water tank through the waterproof component.
9. The water level detection device of claim 1, wherein the sampling interface is an a/D interface.
10. A steam box, characterized in that the steam box comprises a water tank and a water level detection device according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323199464.3U CN221077768U (en) | 2023-11-27 | 2023-11-27 | Water level detection device and steam box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323199464.3U CN221077768U (en) | 2023-11-27 | 2023-11-27 | Water level detection device and steam box |
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| Publication Number | Publication Date |
|---|---|
| CN221077768U true CN221077768U (en) | 2024-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323199464.3U Active CN221077768U (en) | 2023-11-27 | 2023-11-27 | Water level detection device and steam box |
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|---|---|
| CN (1) | CN221077768U (en) |
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2023
- 2023-11-27 CN CN202323199464.3U patent/CN221077768U/en active Active
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