CN202221330U - Liquid level sensor - Google Patents
Liquid level sensor Download PDFInfo
- Publication number
- CN202221330U CN202221330U CN2011203277709U CN201120327770U CN202221330U CN 202221330 U CN202221330 U CN 202221330U CN 2011203277709 U CN2011203277709 U CN 2011203277709U CN 201120327770 U CN201120327770 U CN 201120327770U CN 202221330 U CN202221330 U CN 202221330U
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- module
- light source
- liquid level
- level sensor
- signal amplification
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- Expired - Fee Related
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Abstract
The utility model relates to the technical field of the industrial detection, concretely a high accuracy non-contact liquid level sensor, characterized in that: the liquid level sensor comprises a light source, a light receiver and a control unit, wherein the light source and the light receiver are arranged on the same horizontal plane and respectively connected with the control unit; the control unit comprises a control chip, an operation module, a signal amplification module and a light source drive module; the light source drive module, the operation module and the signal amplification module are respectively connected with the control chip; the light receiver and the light source are respectively connected with the signal amplification module and the light source drive module. The liquid level sensor has the advantages of less parts, easy operation, high precision and convenience for liquid level detection.
Description
Technical field
The utility model relates to the industrial detection field, is specially a kind of contactless high-precision liquid level sensor.
Background technology
In the industrial detection field, the Level Detection precision prescribed is high, and needing can the requirement of well adapted site environment.Because its singularity of using and requiring; Measuring accuracy is proposed very high request, also require to have very strong adaptive capacity to environment, non-maintaining ability in addition; Long ability to work under rugged surroundings; Need to consider high temperature, corrosive gas, vibration, whether have the influence of phenomenons such as turbulent flow, bubble, fluid state, and factors such as cleaning and degree of fouling, liquid surface fluctuation.Must possess digitizing or linearization output in addition, security, intensity and reliability all required very high.
Summary of the invention
The purpose of the utility model is to provide a kind of contactless high-precision liquid level fixed point pick-up unit, and it is easy to maintenance, control is simple.
In order to achieve the above object, the utility model is achieved in that
A kind of liquid level sensor comprises light emitting source, optical receiver, control module, and light emitting source, optical receiver are located at same surface level and are connected with control module respectively; Said control module comprises control chip, computing module, signal amplification module, light source driver module; This light source driver module, computing module, signal amplification module are connected with control chip respectively, and optical receiver, light emitting source are connected with signal amplification module, light source driver module respectively.
Described liquid level sensor, its light emitting source are red LED lamp; Said optical receiver is especially responsive to red light source.
Described liquid level sensor, its light source driver module are the constant current light source driver module.
The utility model adopts above-mentioned design, by control module light source, optical receiving set is controlled, and parts are few, operation easily, and precision is also high simultaneously, for Level Detection provides convenience.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the synoptic diagram of control module in the utility model.
Embodiment
Below further specify the utility model through specific embodiment.
As shown in Figure 1, a kind of liquid level sensor comprises light emitting source 3, optical receiver 2, control module 1, and light emitting source 3, optical receiver 2 are located at the same surface level of liquid 4 and are connected with control module 1 respectively; Said control module 1 comprises control chip 5, computing module 10, signal amplification module 6, light source driver module 7; This light source driver module 7, computing module 10, signal amplification module 6 are connected with control chip 5 respectively, and optical receiver 2, light emitting source 3 are connected with signal amplification module 6, light source driver module 7 respectively.
Described liquid level sensor, its light emitting source 3 is a red LED lamp; 2 pairs of red light sources of said optical receiver are especially responsive.
When using the utility model, light emitting source 3, optical receiver 2 are placed and the same surface level of liquid level point to be detected.By light source driver module 7 driving LED lamps; When liquid level is lower than liquid level point to be detected; The light that the LED lamp sends is beaten on optical receiver 2, produces a light intensity voltage, when in a single day liquid level arrives liquid level point to be detected; This light intensity voltage changes, and this just changes signal amplification module 6 in can Be Controlled unit 1 and detects and be sent to control chip 5 and carry out such as sluggish comparison, TTL calculating through computing module 10 after, finally coordinate all the other execution units again and make action.
In the use, move light emitting source 3 and just can detect different liquid level point with the horizontal alignment position of optical receiver 2.
In order to prevent that luminous intensity receives the influence of environment temperature, adopt the constant current light source driver module of band temperature compensation; This module is integrated in the control module
In order to prevent of the influence of extraneous bias light, in the high light environment, need that total system is done certain lucifuge and handle optical receiver.
In sum, the utility model is controlled light source, optical receiving set by control module, and parts are few, operation easily, and precision is also high simultaneously, for Level Detection provides convenience.
Claims (3)
1. liquid level sensor, it is characterized in that: it comprises light emitting source, optical receiver and control module, light emitting source, optical receiver are located at same surface level and are connected with control module respectively; Said control module comprises control chip, computing module, signal amplification module, light source driver module; This light source driver module, computing module, signal amplification module are connected with control chip respectively, and optical receiver, light emitting source are connected with signal amplification module, light source driver module respectively.
2. liquid level sensor according to claim 1, it is characterized in that: light emitting source is a red LED lamp; Said optical receiver is responsive to red light source.
3. liquid level sensor according to claim 1 is characterized in that: light source driver module is the constant current light source driver module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203277709U CN202221330U (en) | 2011-09-02 | 2011-09-02 | Liquid level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203277709U CN202221330U (en) | 2011-09-02 | 2011-09-02 | Liquid level sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202221330U true CN202221330U (en) | 2012-05-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203277709U Expired - Fee Related CN202221330U (en) | 2011-09-02 | 2011-09-02 | Liquid level sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202221330U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102715147A (en) * | 2012-05-29 | 2012-10-10 | 无锡莱吉特信息科技有限公司 | Electric mosquito-repellent liquid with liquid level-detecting function |
| CN105067081A (en) * | 2015-09-15 | 2015-11-18 | 上海屹尧仪器科技发展有限公司 | Differential type high-precision liquid level detection method used for quantitative concentration |
-
2011
- 2011-09-02 CN CN2011203277709U patent/CN202221330U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102715147A (en) * | 2012-05-29 | 2012-10-10 | 无锡莱吉特信息科技有限公司 | Electric mosquito-repellent liquid with liquid level-detecting function |
| CN105067081A (en) * | 2015-09-15 | 2015-11-18 | 上海屹尧仪器科技发展有限公司 | Differential type high-precision liquid level detection method used for quantitative concentration |
| CN105067081B (en) * | 2015-09-15 | 2018-03-06 | 上海屹尧仪器科技发展有限公司 | A kind of differential type high-precision liquid-level detecting method for quantitatively concentrating |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20120516 Termination date: 20190902 |