CN109115305B - Container liquid level detection device and method and water purifier - Google Patents
Container liquid level detection device and method and water purifier Download PDFInfo
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- CN109115305B CN109115305B CN201810883280.3A CN201810883280A CN109115305B CN 109115305 B CN109115305 B CN 109115305B CN 201810883280 A CN201810883280 A CN 201810883280A CN 109115305 B CN109115305 B CN 109115305B
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- 239000007788 liquid Substances 0.000 title claims abstract description 106
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 238000001514 detection method Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000005259 measurement Methods 0.000 claims abstract description 19
- 230000003287 optical effect Effects 0.000 claims description 41
- 238000002347 injection Methods 0.000 claims description 14
- 239000007924 injection Substances 0.000 claims description 14
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000011897 real-time detection Methods 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/284—Electromagnetic waves
- G01F23/292—Light, e.g. infrared or ultraviolet
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The application relates to a container liquid level detection device and method and a water purifier. The device comprises: the light emitting module is arranged at the top or the bottom in the container and used for emitting light rays and recording the emitting time of the light rays; the reflecting module is arranged opposite to the light emergent module in the depth direction of the container and is used for reflecting the light rays emitted by the light emergent module; and the light receiving module is arranged at the top in the container or the bottom in the container, arranged side by side with the light emitting module and used for receiving the light rays reflected by the reflecting module and recording the receiving time of the light rays. The device can detect the liquid level inside the container in real time, can realize high-precision liquid level measurement, and has the advantages of simple structure and low cost.
Description
Technical field
This application involves Technology of Level Detection fields, more particularly to a kind of tank fill level detection device, method and water purification
Machine.
Background technique
As people increasingly pay close attention to drinking-water health, the use of water purifier is also gradually popularized, and water purifier is in use process
In the problem of often will appear water shortage, water processed not in time.Existing liquid-level detecting method generally uses multiple level sensings
Switch, this method can only monitor certain fixed liquid levels (the high, medium and low liquid level of such as water tank), so method can only be known
The liquid level of certain fixations, and when liquid level is among two liquid level detecting switchs, just it can not accurately know current level, therefore
It will lead to the problem of water purifier water shortage, water processed occurs not in time.
Summary of the invention
Based on this, it is necessary in view of the above technical problems, provide a kind of tank fill level for capableing of real-time perfoming level sensing
Detection device, method and water purifier.
A kind of tank fill level detection device, described device include:
Light is emitted module, is set to bottom in container inner top or container, is used for emergent ray, and record the light
It is emitted the time；
Reflecting module is oppositely arranged, for the light with light outgoing module on the depth direction of the container
The light of outgoing module outgoing is reflected；
Optical receiver module is set to bottom in container inner top or container, and is arranged side by side with light outgoing module, uses
In the light of the reception reflecting module reflection, and record the receiving time of the light.
The optical receiver module and light outgoing module are set to the bottom of the container in one of the embodiments,
Portion, the reflecting module are set to the top of container, and the reflecting module be located in the orthographic projection of the container bottom it is described
Between optical receiver module and light outgoing module.
In one of the embodiments, from the angle of emergence and the container for the light that light outgoing module is emitted
The angle formed between the liquid level of liquid is less than 90 degree.
Described device in one of the embodiments, further include: waterproof part, around light outgoing module and light-receiving
Module setting carries out waterproof when being set to container bottom for light outgoing module and the optical receiver module.
The tank fill level detection device further includes liquid level Acquisition Circuit in one of the embodiments, respectively with it is described
Light outgoing module is connected with the optical receiver module, for the outgoing according to the shooting angle, the light of the emergent ray
The receiving time of time and the light calculates level value.
The light outgoing module is infrared outgoing module in one of the embodiments, and the optical receiver module is infrared
Receiving module.
A kind of liquid-level detecting method using above-mentioned tank fill level detection device, the liquid-level detecting method include:
Obtain the shooting angle for the measurement light being emitted from light outgoing module；
It obtains the measurement light and is emitted to the duration for being incident on the optical receiver module and being passed through from light outgoing module；
According to the shooting angle of the measurement light, the duration, the level value of liquid is calculated.
In one of the embodiments, the method also includes:
Whether the level value of monitoring liquid in containers reaches the first default level value；
When the level value reaches the first default level value, then liquid injection instruction, the liquid injection instruction are sent
For injecting liquid into the container；
Judge whether the level value reaches the second default level value；
When the level value reaches the second default level value, then stopping injection instruction, the stopping injection instruction are sent
For stopping injecting liquid into the container.
In one of the embodiments, the method also includes:
Calculate the time difference of the outgoing time of the measurement light and the receiving time of the measurement light；
Judge the time difference whether less than the first preset value；
If the time difference, whether less than the first preset value, liquid was injected into container；
Judge whether the time difference is equal to the second preset value；
If the time difference is equal to the second preset value, stop injecting liquid into container.
A kind of water purifier, including said vesse liquid level detection device.
Said vesse liquid level detection device, method and water purifier, by light be emitted module record light the outgoing time and
Optical receiver module records the receiving time of light, light when leading to different liquid levels according to the principle of reflection of the refraction principle of light and light
There are the time differences to calculate liquid level for transmission, can height of liquid level inside real-time detection container, can be realized high-precision liquid level
Measurement, used apparatus structure are simple, at low cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of tank fill level detection device in one embodiment；
Fig. 2 is to cause outgoing and receiving time difference to calculate the original of liquid level according to the path difference of light transmission in one embodiment
Manage schematic diagram；
Fig. 3 is the schematic illustration that light passes through reflection unit multiple reflections in one embodiment；
Fig. 4 is the flow diagram of liquid-level detecting method in one embodiment；
Fig. 5 is the flow diagram for controlling injection liquid in one embodiment according to level value；
Fig. 6 is the flow diagram for controlling injection liquid in one embodiment according to the time difference.
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, not
For limiting the application.
In one embodiment, as shown in Figure 1, providing a kind of tank fill level detection device 11, described device includes: light
It is emitted module 111, reflecting module 112 and optical receiver module 113.
Light is emitted module 111, is set to bottom in container inner top or container, is used for emergent ray, and record the light
The outgoing time of line.
Wherein, light can be infrared light, ultraviolet light, laser.
Reflecting module 112, on the depth direction of the container with the light outgoing module 111 be oppositely arranged, for pair
The light that the light outgoing module 111 is emitted is reflected.
Wherein, reflecting module 112 is oppositely arranged packet with light outgoing module 111 on the depth direction of the container
Include: in container inner top, light is emitted module 111 and bottom is arranged in container the setting of reflecting module 112；Reflecting module 112 is arranged
The bottom in container, light are emitted module 111 and are arranged in container inner top.
Optical receiver module 113 is set to bottom in container inner top or container, and sets side by side with light outgoing module
It sets, for receiving the light of the reflecting module reflection, and records the receiving time of the light.
Wherein, optical receiver module 113 and light outgoing module 111 are located at container bottom or container top simultaneously, and are located at light
Plane is arranged side by side where line propagation path.
Wherein, the light outgoing module 111, reflecting module 112 and 113 three of optical receiver module are located at and the light
In the identical plane of propagation path.
In the present embodiment, light outgoing module 111 and optical receiver module 113 are internally integrated processing unit, for light
The receiving time of outgoing time and light is recorded.
Tank fill level detection device 11 in one of the embodiments, further include: waterproof part 114 goes out around the light
Module and optical receiver module setting are penetrated, module is emitted for the light and the optical receiver module is set to container bottom when progress
Waterproof.
The optical receiver module 113 is set to the container with light outgoing module 111 in one of the embodiments,
Bottom, the reflecting module 112 is set to the top of container, and the reflecting module 112 is in the positive throwing of the container bottom
Shadow is located between the optical receiver module 113 and light outgoing module 111.
Wherein, reflecting module 112 is emitted module 111 with light and optical receiver module 113 is not be overlapped in the projection of perpendicular,
I.e. on the direction perpendicular to liquid level, reflecting module 112, light outgoing module 111,113 three of optical receiver module are not arranged collinearly,
To guarantee emergent ray and liquid level out of plumb, and emergent ray can reach reflecting module 112 after superrefraction, and light is by anti-
It can be received by optical receiver module 113 after penetrating the one or many reflections of module 112.Preferably, the angle of emergence of the light with
The angle formed between the liquid level of the liquid in containers is less than 90 degree.
In one embodiment of the invention, tank fill level detection device 11 further include: liquid level Acquisition Circuit 115, respectively
Module is emitted with the light and the optical receiver module is connect, for shooting angle, the light according to the emergent ray
Outgoing the time and the light receiving time calculate level value.
Wherein, light outgoing 111 emergent ray of module and record state the outgoing time of light, reach after liquid level reflects anti-
Module 112 is penetrated, light is reflexed to the water surface again by reflecting module 112, and light is refracted into liquid arrival light by liquid level again and connects
Module 113 is received, optical receiver module 113 records the receiving time of the light or light passes through liquid level and reflexes to reflection again
Module 112 reaches optical receiver module 113 by entering liquid after multiple reflections, and optical receiver module 113 records connecing for the light
Between time receiving.When the liquid level difference of liquid, the path that light is walked is different, when leading to the reception for being emitted time and light of light
Between time difference it is different, the different time differences corresponds to different liquid levels.According to light outgoing the time, light receiving time,
Spread speed, light are emitted module 111 and optical receiver module 113 in air for spread speed, light in a liquid for the height of container, light
Between positional relationship calculate level value.
Tank fill level detection device 11 in one of the embodiments, further include: display module 116 is adopted with the liquid level
Collector 113 connects, for showing the level value.
Tank fill level detection device 11 in one of the embodiments, further include: liquid level module 117, for working as institute
When stating level value lower than water tank minimum liquid level value, water tank water is controlled, or when the level value is higher than water tank highest level value
When, control water tank stops water processed.
Said vesse liquid level detection device, method and water purifier, by light be emitted module record light the outgoing time and
Optical receiver module records the receiving time of light, light when leading to different liquid levels according to the principle of reflection of the refraction principle of light and light
There are the time differences to calculate liquid level for transmission, can height of liquid level inside real-time detection container, can be realized high-precision liquid level
Measurement, used apparatus structure are simple, at low cost.
In one embodiment, as shown in Fig. 2, it is a kind of for high water tank detection tank fill level detection device, in water
In case 10, light outgoing 111 emergent ray M1 of module and the outgoing time t1 for recording light, when by No. 1 water level line, by folding
It is mapped to up to reflecting module 112, is reflected using reflecting module 112 and reach No. 1 water level line, light is by No. 1 water level line liquid level folding
It is mapped to up to optical receiver module 113 and records the receiving time t2 of light；Equally, light is emitted 111 emergent ray M2 of module and records
The outgoing time t3 of light reaches reflecting module 112 by refraction, using reflecting module 112 when by No. 2 water level lines
Reflection reaches No. 2 water level lines, and light reaches optical receiver module 113 by No. 2 water level line liquid level refractions and records the reception of light
Time t4.Since light is different in the path walked by No. 1 water level line and No. 2 water level lines, finally result between t2, t1 when
Between difference it is different from the time difference between t4, t3, the different time differences corresponds to different level values.
In one embodiment, the light outgoing module is infrared outgoing module, and optical receiver module is infrared receiving module.
The light is infrared light.
In one embodiment, as shown in figure 3, it is a kind of for high water tank detection tank fill level detection device, in water
In case 10, light outgoing module emergent ray and the outgoing time for recording light, light M1 reaches reflecting module after superrefraction
112, light is reflexed to liquid level again by reflecting module 112, liquid level again reflection light to reflecting module 112, so circulation several times,
Finally, light is received by liquid level refraction by optical receiver module 113, optical receiver module 113 records the receiving time of light, passes through
The light of multiple reflections is able to extend the time difference of the outgoing time of light and the receiving time of light, so that the calculating of level value
More accurate, certainly, light has some light when by liquid level reflection and is refracted in water (such as dotted arrow institute in Fig. 3
Show).In the present embodiment, reflecting module 112 needs that the length so that light multiple reflections is arranged, and optical receiver module 113 goes out with light
The distance for penetrating module 112 is increase accordingly, and specific length can be determined according to the height of container and the shooting angle of emergent ray.
In one embodiment, as shown in figure 4, a kind of side for carrying out level sensing using said vesse liquid level detection device
Method, which comprises
S410 obtains the shooting angle for the measurement light being emitted from light outgoing module；
S420, the acquisition measurement light are emitted to from light outgoing module and are incident on what the optical receiver module was passed through
Duration；
S430 calculates the level value of liquid according to the shooting angle of the measurement light, the duration.
Wherein, according to the shooting angle of the measurement light, the duration, the level value for calculating liquid includes: according to light
Outgoing time, the receiving time of light, the height of container, light refractive index in a liquid, light outgoing module and light-receiving mould
Positional relationship between block calculates level value.Due to the light outgoing the time and the receiving time of the light between when
Between it is poor, the path length that light is walked with light in air in a liquid can be calculated separately out, the refraction further according to light is former
Reason and principle of reflection are emitted the positional relationship between module and optical receiver module in conjunction with the height and light of container, are transported by geometry
Calculate the level value in available container.
In one of the embodiments, as shown in figure 5, the method for the level sensing further include:
Whether S510, the level value for monitoring liquid in containers reach the first default level value；
S520 then sends liquid injection instruction, the liquid injection when the level value reaches the first default level value
Instruction is for injecting liquid into the container；
S530, judges whether the level value reaches the second default level value；
S540 then sends stopping injection instruction, the stopping injection when the level value reaches the second default level value
Instruction injects liquid into the container for stopping.
Wherein, the first default level value corresponds to low liquid level position, if it is less than the first default level value, then outside is not achieved
The requirement of liquid is supplied, at this time, it may be necessary to liquid is injected inside container.Second default level value corresponds to high liquid level position, if
When level value reaches the second default level value, container has been filled with, then cannot reinject liquid, therefore, when the level value reaches
When to the second default level value, then stop injecting liquid into container.
In one of the embodiments, as shown in fig. 6, the method for the level sensing further include:
S610 calculates the time difference of the outgoing time of the measurement light and the receiving time of the measurement light；
Whether S620 judges the time difference less than the first preset value；
S630, if the time difference, whether less than the first preset value, liquid was injected into container；
S640, judges whether the time difference is equal to the second preset value；
S650 stops injecting liquid into container if the time difference is equal to the second preset value.
Wherein, the first default place value corresponds to low liquid level position, and if it is less than the first predeterminated position, then liquid level reaches not in container
To the demand of outside supply, at this time, it may be necessary to liquid is injected inside container.Second preset value corresponds to high liquid level position, works as container
When interior liquid level reaches high liquid level position, container has been filled with, then cannot reinject liquid, therefore, is equal to second in advance when the time difference
If then stopping injecting liquid into container when value.
Specific about liquid-level detecting method limits the restriction that may refer to above for tank fill level detection device, In
This is repeated no more.
In one embodiment, a kind of water purifier, including said vesse liquid level detection device.Such water purifier can be real-time
Water tank inside liquid level is detected, water processed, guarantee water tank inside water abundance can not needed in time in water intaking according to liquid level
To.
Each technical characteristic of above embodiments can be combined arbitrarily, for simplicity of description, not to above-described embodiment
In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance
Shield all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the concept of this application, various modifications and improvements can be made, these belong to the protection of the application
Range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (9)
1. a kind of tank fill level detection device, which is characterized in that described device includes:
Light is emitted module, is set to bottom in container inner top or container, is used for emergent ray, and record the outgoing of the light
Time；
Reflecting module is oppositely arranged on the depth direction of the container with light outgoing module, for being emitted to the light
The light of module outgoing is reflected；
Optical receiver module is set to bottom in container inner top or container, and is arranged side by side with light outgoing module, for connecing
The light of the reflecting module reflection is received, and records the receiving time of the light；Wherein, the reflecting module is in the container
Depth direction on the light outgoing module be oppositely arranged include: when the light outgoing module be arranged in container bottom, then
The reflecting module is arranged in container inner top；When light outgoing module setting is in container inner top, then the reflecting module
Bottom is set in container；Wherein, liquid level of the light of the light outgoing module outgoing Jing Guo the liquid in containers is refracted to
Up to the reflecting module；
The tank fill level detection device further includes liquid level Acquisition Circuit, is emitted module and the light-receiving mould with the light respectively
Block connection, for the shooting angle according to the emergent ray, the receiving time of the outgoing time and the light of the light
Calculate level value.
2. the apparatus according to claim 1, which is characterized in that the optical receiver module is set to light outgoing module
The bottom of the container, the reflecting module are set to the top of container, and the reflecting module the container bottom just
Projection is located between the optical receiver module and light outgoing module.
3. the apparatus according to claim 1, which is characterized in that the outgoing for the light being emitted from light outgoing module
The angle formed between angle and the liquid level of the liquid in containers is less than 90 degree.
4. the apparatus according to claim 1, which is characterized in that described device further include: waterproof part, the waterproof part
It is emitted module and optical receiver module setting around the light, module is emitted for the light and the optical receiver module is set to appearance
Waterproof is carried out when device bottom.
5. device according to claim 1-4, which is characterized in that the light outgoing module is infrared outgoing mould
Block, the optical receiver module are infrared receiving module.
6. a kind of liquid-level detecting method using tank fill level detection device described in any one of claim 1-5, special
Sign is that the liquid-level detecting method includes:
Obtain the shooting angle for the measurement light being emitted from light outgoing module；
It obtains the measurement light and is emitted to the duration for being incident on the optical receiver module and being passed through from light outgoing module；
According to the shooting angle of the measurement light, the duration, the level value of liquid is calculated.
7. according to the method described in claim 6, it is characterized in that, the method also includes:
Whether the level value of monitoring liquid in containers reaches the first default level value；
When the level value reaches the first default level value, then liquid injection instruction is sent, the liquid injection instruction is used for
Liquid is injected into the container；
Judge whether the level value reaches the second default level value；
When the level value reaches the second default level value, then stopping injection instruction is sent, the stopping injection instruction is used for
Stop injecting liquid into the container.
8. the method according to the description of claim 7 is characterized in that the method also includes:
Calculate the time difference of the outgoing time of the measurement light and the receiving time of the measurement light；
Judge the time difference whether less than the first preset value；
If the time difference, less than the first preset value, liquid was injected into container；
Judge whether the time difference is equal to the second preset value；
If the time difference is equal to the second preset value, stop injecting liquid into container.
9. a kind of water purifier, which is characterized in that including the described in any item tank fill level detection devices of claim 1-5.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810883280.3A CN109115305B (en) | 2018-08-06 | 2018-08-06 | Container liquid level detection device and method and water purifier |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810883280.3A CN109115305B (en) | 2018-08-06 | 2018-08-06 | Container liquid level detection device and method and water purifier |
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| CN109115305B true CN109115305B (en) | 2019-10-29 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110701653B (en) * | 2019-11-04 | 2021-05-07 | 宁波方太厨具有限公司 | Device and method for detecting liquid level of oil cup of range hood |
| CN111928358B (en) * | 2020-08-18 | 2021-06-25 | 珠海格力电器股份有限公司 | Water tank detection structure of dehumidifier, dehumidifier and water tank detection method of dehumidifier |
| CN112147350A (en) * | 2020-08-25 | 2020-12-29 | 力合科技（湖南）股份有限公司 | Liquid level monitoring device and sampling monitoring method |
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