CN208536980U - A kind of non-contact optoelectronic formula liquid level induction system and liquid heater - Google Patents
A kind of non-contact optoelectronic formula liquid level induction system and liquid heater Download PDFInfo
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- CN208536980U CN208536980U CN201821043706.6U CN201821043706U CN208536980U CN 208536980 U CN208536980 U CN 208536980U CN 201821043706 U CN201821043706 U CN 201821043706U CN 208536980 U CN208536980 U CN 208536980U
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- light
- optical receiver
- groove
- liquid level
- induction system
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Abstract
The utility model provides a kind of non-contact optoelectronic formula liquid level induction system, including liquid container and level sensor；The groove extended along short transverse is provided on the side wall of the liquid container, there are two the side walls of light transmission for groove tool；The light-beam generator and optical receiver for the high settings such as the level sensor includes at least one detection circuit, and each detection circuit has, the light-beam generator and optical receiver of different detection circuits are intervally arranged along short transverse；The light beam that light-beam transmitter issues can successively the reflex by the two side walls of the groove be received by the optical receiver of same detection circuit later, which can generate different electric signals according to the optical signal power received.The device is able to solve the problem of erroneous judgement caused by container lean and failure and food touch-safe.
Description
Technical field
The utility model relates to a kind of liquid level detection device, in particular to a kind of non-contact optoelectronic formula liquid level induction system and
Liquid heater.
Background technique
General photoelectric liquid-levle sensing device, if Authorization Notice No. is the water-level detecting device of CN203785742U,
The water-level detecting device of optical transmitting set, optical receiver is installed in liquid container two sides respectively, the arrival light hair that water level is no in container
Light beam can not refract to optical receiver when emitter position, and light beam is refracted to light-receiving when water level reaches optical transmitting set position in container
Device carrys out sensed water level height with this；When the water level caused by container lean is uneven, erroneous judgement or failure can be caused, and should
Device is relatively high to the location and installation required precision of optical transmitting set, optical receiver, needs respectively to preset installation position at container both ends
Cause structure of container complicated.
Separately there is a kind of photoelectric liquid-levle sensing device, if Authorization Notice No. is the water level inductor of CN204730913U,
Its beam emissions component and light beam sensing device are arranged on the same pedestal, and can be avoided container lean leads to erroneous judgement or failure
The problem of, however require that the retroreflecting that liquid immersion mirror body forms light just can be carried out judgement, direct contact liq is related to eating
Product touch-safe problem.
As it can be seen that the prior art has much room for improvement and improves.
Utility model content
For above-mentioned problems of the prior art, the purpose of this utility model is to provide a kind of non-contact optoelectronic formulas
Liquid level induction system and liquid heater, it is intended to solve erroneous judgement and failure caused by container lean and food touch-safe
Problem.
In order to achieve the above object, the utility model takes following technical scheme:
A kind of non-contact optoelectronic formula liquid level induction system, including liquid container and level sensor；The liquid container
The groove extended along short transverse is provided on side wall, there are two the side walls of light transmission for groove tool；The level sensor includes
At least one detection circuit, each detection circuit have etc. high settings light-beam generator and optical receiver, different detection circuits
Light-beam generator and optical receiver be intervally arranged along short transverse；The light beam that light-beam transmitter issues can be successively by described
It is received after the reflex of the two side walls of groove by the optical receiver of same detection circuit, which being capable of basis
The optical signal power received generates different electric signals.
In the non-contact optoelectronic formula liquid level induction system, the two side walls of the groove are two orthogonal flat
Wall, the two side walls are 45 ° with the angle of the side wall of the liquid container where groove；The light of the light-beam generator transmitting
Beam is with one of side wall of 45 ° of incidence angle directive groove.
In the non-contact optoelectronic formula liquid level induction system, the level sensor further includes groove described in one piece of face
The circuit board of setting, a connection plug, and the connecting line of connection circuit board and connection plug；The detection circuit setting exists
On circuit board, light-beam generator and optical receiver are vertically disposed on the face of groove described in circuit board face.
In the non-contact optoelectronic formula liquid level induction system, the resistance value of the optical receiver can be with the light received
The Strength Changes of beam and change；The detection circuit further includes current-limiting resistance and divider resistance；The light-beam generator and current limliting
Resistance is connected into the first branch, and the optical receiver and divider resistance are connected into second branch, and the first branch and second branch are simultaneously
Connection is connected to the height pressure side of input power, and detection voltage output end is provided between optical receiver and divider resistance.
In the non-contact optoelectronic formula liquid level induction system, the opening width of the groove is not more than 30mm, the light
Beam generator and optical receiver are not more than 13mm at a distance from groove.
In the non-contact optoelectronic formula liquid level induction system, the opening width of the groove is 15 ± 5mm, the light beam
Generator and optical receiver are 5mm ± 2mm at a distance from groove.
In the non-contact optoelectronic formula liquid level induction system, the light-beam transmitter includes illuminator and is placed on luminous
External cover is provided with the bundles of convex lens of light pinching for illuminator to be issued in the cover；The optical receiver packet
The cover for including light-sensitive element and being placed on outside light-sensitive element is provided with for light beam to be pooled on light-sensitive element in the cover
Convex lens.
In the non-contact optoelectronic formula liquid level induction system, the light-beam transmitter is laser emitter, and the light connects
Receipts device is light-sensitive element.
In the non-contact optoelectronic formula liquid level induction system, the light-beam transmitter is infrared transmitter, and the light connects
Receipts device is infrared remote receiver.
The application also provides a kind of liquid heater, and the non-contact optoelectronic formula liquid level is provided in the liquid heater
Sensing device.
The utility model has the advantages that
The utility model provides a kind of non-contact optoelectronic formula liquid level induction system, when liquid level does not have to reach certain light beam
When the position of device and optical receiver, the light beam which issues can completely or partially pass through the side wall of groove, light-receiving
The beam intensity that device does not receive light beam or receives is weaker, and when liquid level reaches the position, the energy across the light of side wall subtracts
Few, the intensity of the light of reflection becomes larger, so that the beam intensity that optical receiver receives becomes larger, optical receiver is according to the light received
Beam intensity is different and generates different electric signals, detects liquid level with this.The liquid level induction system is able to solve container lean
The problem of caused erroneous judgement and failure, and it is not necessarily to contact liq, solve the problems, such as food touch-safe.
Detailed description of the invention
Fig. 1 is the top view of non-contact optoelectronic formula liquid level induction system provided by the utility model, and liquid is shown in figure
Position in place the case where.
Fig. 2 is the top view of non-contact optoelectronic formula liquid level induction system provided by the utility model, and liquid is shown in figure
Position situation not in place.
Fig. 3 is the front view of non-contact optoelectronic formula liquid level induction system provided by the utility model.
Fig. 4 is the front view of level sensor in non-contact optoelectronic formula liquid level induction system provided by the utility model.
Fig. 5 is the schematic diagram of detection circuit in non-contact optoelectronic formula liquid level induction system provided by the utility model.
Specific embodiment
The utility model provides a kind of non-contact optoelectronic formula liquid level induction system and liquid heater, to make the utility model
Purpose, technical solution and effect it is clearer, clear, it is further detailed to the utility model as follows in conjunction with drawings and embodiments
It describes in detail bright.It should be appreciated that specific embodiment described herein is not used to limit originally practical only to explain the utility model
It is novel.
Please refer to Fig. 1-5, a kind of non-contact optoelectronic formula liquid level induction system, including liquid container A and level sensor B；
The groove 1 extended along short transverse is provided on the side wall of the liquid container A, there are two the side walls 1.1 of light transmission for groove tool；
The light-beam generator 2 for the high settings such as the level sensor B includes at least one detection circuit B1, and each detection circuit B1 has
With optical receiver 3, the light-beam generator and optical receiver of different detection circuits are intervally arranged along short transverse；Light-beam transmitter hair
By the light-receiving of same detection circuit after the reflex for the two side walls 1.1 that light beam out can successively pass through the groove
Device receives, which can generate different electric signals according to the optical signal power received.
When liquid level does not reach the position of certain light-beam generator and optical receiver, such as Fig. 2, what which issued
Light beam can completely or partially pass through the side wall of groove, and the beam intensity that optical receiver does not receive light beam or receives is weaker, when
When liquid level reaches the position, such as Fig. 1, the energy across the light of side wall is reduced, and the intensity of the light of reflection becomes larger, and (size of variation takes
Certainly in the refractive index of liquid, optimal to be totally reflected, variation is maximum at this time), thus the beam intensity that optical receiver receives
Become larger, optical receiver is different according to the beam intensity received and generates different electric signals, detects liquid level with this.Due to
The same side is arranged in light-beam generator and optical receiver, which is able to solve erroneous judgement caused by container lean
And the problem of failure, and due to being not necessarily to contact liq, solve the problems, such as food touch-safe.
Specifically, seeing Fig. 1,2, the two side walls 1.1 of the groove 1 are two orthogonal planomurals, the two side walls
1.1 are 45 ° with the angle of the side wall A1 of the liquid container A where groove, and (such as groove is equilateral V-shaped groove or antiparallelogram
Slot)；The light beam that the light-beam generator 2 emits is with one of side wall of 45 ° of incidence angle directive groove.
In this way, incident parallel always with the light beam of reflection, light-beam generator and optical receiver only need to be arranged in the same direction side by side i.e.
Can, location and installation precision is easily guaranteed that；And the incidence angle in two side walls is 45 °, ensure that light beam in two side walls
Reflectivity it is identical, it is extremely low and light is caused to connect to avoid the occurrence of the very high reflectivity on another side wall of the reflectivity on a side wall
The case where device can not identify intensity variation is received, guarantees the sensitivity of detection.
See that Fig. 1-4, the level sensor B further include the circuit board 4 of the setting of groove 1 described in one piece of face, a connection
Plug 5, and the connecting line 6 of connection circuit board and connection plug；On the circuit board 4, light beam is sent out for the detection circuit B1 setting
Raw device and optical receiver are vertically disposed on the face of groove described in circuit board face.
Further, the resistance value of the optical receiver 3 can change with the Strength Changes of the light beam received；It is described
Detection circuit B1 further includes current-limiting resistance 7 and divider resistance 8；The light-beam generator 2 is connected into first with current-limiting resistance 7
Road, the optical receiver 3 are connected into second branch with divider resistance 8, and the first branch and second branch are connected in parallel in input electricity
The height pressure side (end VCC and the end GND in Fig. 5, wherein low-pressure end is grounded) in source, is arranged between optical receiver 3 and divider resistance 8
There is detection voltage output end 9.
It is to prevent light-beam generator because electric current is excessively high to reduce the current value in the first branch that current-limiting resistance 7, which is arranged,
And burn, increase the reliability of device；Divider resistance be set be in order to enable to detect the voltage value at voltage output end 9 with
The resistance change of optical receiver and change.
Preferably, see that Fig. 2, the opening width L1 of the groove 1 are not more than 30mm, the light-beam generator 2 and light-receiving
Device 3 and 1 distance L2 of groove is not more than 13mm.So that level sensor B is fixed on liquid container A, avoid apart from excessive and
It is difficult to be reliably fixed, the path for also avoiding light beam is too long and consumes excessive, guarantees induction.Preferably, the groove
Opening width is 15 ± 5mm, and the light-beam generator and optical receiver are 5mm ± 2mm at a distance from groove.
In the present embodiment, the light-beam transmitter 2 includes illuminator 2.1(such as light emitting diode) and be placed on outside illuminator
Cover (in Fig. 1-3 it can be seen that part), the light pinching being provided with for illuminator 3.1 to be issued in the cover is bundles of
Convex lens (does not have picture) in figure；The optical receiver 3 includes light-sensitive element 3.1(such as photo resistance) and be placed on outside light-sensitive element
Cover is provided with the convex lens for light beam being pooled on light-sensitive element in the cover.By the focusing light effect of convex lens, make
The energy of light is concentrated, and is conducive to improve sensitivity and is reduced energy consumption.
In another embodiment, the light-beam transmitter 2 is laser emitter, and the optical receiver is light-sensitive element (such as light
Quick resistance).The light high concentration of laser transmitter projects, there is no need to which cover and convex lens are arranged again, structure is simpler.
The light-beam transmitter can also be infrared transmitter, and accordingly, the optical receiver is infrared remote receiver, certain unsuitable to adapt to
Use the level sensing of the liquid of radiation of visible light.
The application also provides a kind of liquid heater, and the non-contact optoelectronic formula liquid level is provided in the liquid heater
Sensing device.The liquid heater is reliable to the precise control of liquid level.
It is understood that for those of ordinary skills, can with technical solution according to the present utility model and
The design of its utility model is subject to equivalent substitution or change, and all these changes or replacement all should belong to the protection of the utility model
Range.
Claims (10)
1. a kind of non-contact optoelectronic formula liquid level induction system, which is characterized in that including liquid container and level sensor；The liquid
The groove extended along short transverse is provided on the side wall of body container, there are two the side walls of light transmission for groove tool；The liquid level sense
The light-beam generator and optical receiver for the high settings such as answering device includes at least one detection circuit, and each detection circuit has, it is different
The light-beam generator and optical receiver of detection circuit are intervally arranged along short transverse；The light beam that light-beam transmitter issues can be successively
It is received after reflex by the two side walls of the groove by the optical receiver of same detection circuit, the optical receiver
Different electric signals can be generated according to the optical signal power received.
2. non-contact optoelectronic formula liquid level induction system according to claim 1, which is characterized in that two sides of the groove
Wall is two orthogonal planomurals, which is 45 ° with the angle of the side wall of the liquid container where groove；Institute
The light beam of light-beam generator transmitting is stated with one of side wall of 45 ° of incidence angle directive groove.
3. non-contact optoelectronic formula liquid level induction system according to claim 2, which is characterized in that the level sensor is also
Circuit board including the setting of groove described in one piece of face, a connection plug, and the connection of connection circuit board and connection plug
Line；On circuit boards, light-beam generator and optical receiver are vertically disposed at described in circuit board face for the detection circuit setting
On the face of groove.
4. non-contact optoelectronic formula liquid level induction system according to claim 3, which is characterized in that the electricity of the optical receiver
Resistance value can change with the Strength Changes of the light beam received；The detection circuit further includes current-limiting resistance and divider resistance；
The light-beam generator and current-limiting resistance are connected into the first branch, and the optical receiver and divider resistance are connected into second branch,
The first branch and second branch are connected in parallel in the height pressure side of input power, and inspection is provided between optical receiver and divider resistance
Survey voltage output end.
5. non-contact optoelectronic formula liquid level induction system according to claim 3, which is characterized in that the opening of the groove is wide
Degree is not more than 30mm, and the light-beam generator and optical receiver are not more than 13mm at a distance from groove.
6. non-contact optoelectronic formula liquid level induction system according to claim 5, which is characterized in that the opening of the groove is wide
Degree is 15 ± 5mm, and the light-beam generator and optical receiver are 5mm ± 2mm at a distance from groove.
7. non-contact optoelectronic formula liquid level induction system according to claim 1, which is characterized in that the light-beam transmitter packet
The cover for including illuminator and being placed on outside illuminator, the light pinching being provided with for illuminator to be issued in the cover are bundles of convex
Lens；The optical receiver includes light-sensitive element and the cover that is placed on outside light-sensitive element, is provided in the cover for light
Beam is pooled to the convex lens on light-sensitive element.
8. non-contact optoelectronic formula liquid level induction system according to claim 1, which is characterized in that the light-beam transmitter is
Laser emitter, the optical receiver are light-sensitive element.
9. non-contact optoelectronic formula liquid level induction system according to claim 1, which is characterized in that the light-beam transmitter is
Infrared transmitter, the optical receiver are infrared remote receiver.
10. a kind of liquid heater, which is characterized in that be arranged in the liquid heater just like described in claim any one of 1-9
Non-contact optoelectronic formula liquid level induction system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821043706.6U CN208536980U (en) | 2018-07-03 | 2018-07-03 | A kind of non-contact optoelectronic formula liquid level induction system and liquid heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821043706.6U CN208536980U (en) | 2018-07-03 | 2018-07-03 | A kind of non-contact optoelectronic formula liquid level induction system and liquid heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208536980U true CN208536980U (en) | 2019-02-22 |
Family
ID=65380210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821043706.6U Expired - Fee Related CN208536980U (en) | 2018-07-03 | 2018-07-03 | A kind of non-contact optoelectronic formula liquid level induction system and liquid heater |
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| Country | Link |
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| CN (1) | CN208536980U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109945952A (en) * | 2019-04-17 | 2019-06-28 | 佛山金田申电子有限公司 | Multi-purpose sensing device |
| CN112229479A (en) * | 2020-09-30 | 2021-01-15 | 广东工业大学 | Non-contact type transparent liquid canning height detection and type identification device and method |
| CN113514131A (en) * | 2021-03-25 | 2021-10-19 | 深圳市能点科技有限公司 | Anti-foam liquid level sensor |
| CN114903388A (en) * | 2021-02-09 | 2022-08-16 | 莱克电气股份有限公司 | Cleaning device and liquid level detection method |
| WO2024036541A1 (en) * | 2022-08-17 | 2024-02-22 | 云鲸智能创新(深圳)有限公司 | Cleaning apparatus |
-
2018
- 2018-07-03 CN CN201821043706.6U patent/CN208536980U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109945952A (en) * | 2019-04-17 | 2019-06-28 | 佛山金田申电子有限公司 | Multi-purpose sensing device |
| CN112229479A (en) * | 2020-09-30 | 2021-01-15 | 广东工业大学 | Non-contact type transparent liquid canning height detection and type identification device and method |
| CN114903388A (en) * | 2021-02-09 | 2022-08-16 | 莱克电气股份有限公司 | Cleaning device and liquid level detection method |
| CN114903388B (en) * | 2021-02-09 | 2023-06-23 | 莱克电气股份有限公司 | Cleaning device and liquid level detection method |
| CN113514131A (en) * | 2021-03-25 | 2021-10-19 | 深圳市能点科技有限公司 | Anti-foam liquid level sensor |
| CN113514131B (en) * | 2021-03-25 | 2024-05-31 | 深圳市能点科技有限公司 | Anti-foam liquid level sensor |
| WO2024036541A1 (en) * | 2022-08-17 | 2024-02-22 | 云鲸智能创新(深圳)有限公司 | Cleaning apparatus |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190222 |
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| CF01 | Termination of patent right due to non-payment of annual fee |