CN216695180U - Optical structure of liquid sensor - Google Patents
Optical structure of liquid sensor Download PDFInfo
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- CN216695180U CN216695180U CN202123224735.7U CN202123224735U CN216695180U CN 216695180 U CN216695180 U CN 216695180U CN 202123224735 U CN202123224735 U CN 202123224735U CN 216695180 U CN216695180 U CN 216695180U
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Abstract
The utility model relates to an optical structure of a liquid sensor, which comprises a condensing lens, a light-emitting device and a photosensitive device, wherein the light-emitting device and the photosensitive device are respectively arranged on two sides of the condensing lens, the condensing lens is a double-sided condensing lens, the light-emitting device and the photosensitive device are all fixed in a container, and the light-emitting device and the photosensitive device are opposite in position. The utility model relates to a container, in particular to a container which is characterized in that light emitted by a light-emitting device arranged in the container passes through a condensing lens, the condensing lens is in different refraction light intensities in air and liquid, and is induced by a photosensitive device to generate voltage, and then is connected with a reminding device to remind to a certain extent, so that the technical problems that whether transparent liquid exists in the container or not is difficult to distinguish and long-time monitoring cannot be carried out in the prior art are solved. The utility model can monitor the liquid height in the container for a long time, provides safety guarantee for production life, can easily judge whether the container contains transparent liquid, and is simple and convenient.
Description
Technical Field
The utility model relates to the technical field of optics, in particular to an optical structure of a liquid sensor.
Background
In the process of production and life, a large number of scenes are needed to ensure that liquid is in certain containers, for example, a kettle needs to be always in a water-containing state in the water boiling process, the interior of a fish tank needs to be always in a water-containing state, or other scenes needing to judge whether the liquid level reaches a certain position are needed, and the scenes cannot be monitored manually for a long time, and if the scenes are not monitored in place in time, danger is extremely easy to occur. On the other hand, if the liquid to be monitored is transparent, how to quickly distinguish whether the transparent liquid exists in the container becomes a difficult problem, the common distinguishing method is to change the container to different angles and observe whether the transparent liquid has light reflection or shaking for distinguishing, and then the method is not suitable for fixed or large containers, and the distinguishing method is inaccurate and has low efficiency.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects existing in the prior art, the utility model provides an optical structure of a liquid sensor, which solves the technical problems that whether transparent liquid exists in a container or not is difficult to distinguish and long-time monitoring is impossible in the prior art.
The optical structure of the liquid sensor comprises a condensing lens, a light-emitting device and a photosensitive device, wherein the light-emitting device and the photosensitive device are respectively arranged on two sides of the condensing lens, the condensing lens is a double-sided condensing lens, the light-emitting device and the photosensitive device are all fixed in a container, and the light-emitting device and the photosensitive device are opposite in position.
The optical structure of the liquid sensor is further improved in that the condensing lens is in a spherical shape with two symmetrical surfaces and protruding outwards.
The optical structure of the liquid sensor is further improved in that the light-emitting device and the light-sensing device are fixed at the optical focal points at two sides of the condenser lens, and the width of the container is not less than twice of the distance between the condenser lens and the optical focal points.
The optical structure of the liquid sensor is further improved in that the light emitting device and the light sensing device are respectively connected with an external power supply.
The optical structure of the liquid sensor is further improved in that a reminding device is connected with the photosensitive device.
The optical structure of the liquid sensor is further improved in that the light emitting device is a light emitting diode.
The optical structure of the liquid sensor is further improved in that the photosensitive device is a phototriode or a photosensitive diode.
Compared with the prior art, the utility model has positive and obvious effect. The utility model relates to a container, which is characterized in that light emitted by a light-emitting device arranged in the container passes through a condensing lens, the condensing lens is in different refraction light intensities in the air and in liquid, and the light-emitting device is induced by a photosensitive device to generate voltage, and then is connected with a reminding device to remind a certain degree, so that the technical problems that whether transparent liquid exists in the container or not is difficult to distinguish and long-time monitoring cannot be realized in the prior art are solved. The utility model can monitor the liquid height in the container for a long time, provides safety guarantee for production life, can easily judge whether the transparent liquid exists in the container, and is simple and convenient.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a perspective view of an optical structure of a liquid sensor of the present invention.
Fig. 2 is a top view of the optical structure of the liquid sensor of the present invention.
Fig. 3 is an optical path diagram of the optical structure of the liquid sensor of the present invention in a liquid-free state.
Fig. 4 is a light path diagram of the optical structure of the liquid sensor of the present invention in the state of liquid.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and fig. 2, the present invention provides an optical structure of a liquid sensor, including a condensing lens 2, and a light emitting device 3 and a light sensing device 4 respectively disposed at two sides of the condensing lens 2, where the condensing lens 2 is a double-sided condensing lens, the condensing lens 2, the light emitting device 3, and the light sensing device 4 are all fixed inside a container 1, and the light emitting device 3 and the light sensing device 4 are opposite in position. As shown in fig. 3 and 4, the working principle of the present invention is as follows: under the condition that no liquid exists in the container 1, light emitted by the light-emitting device 3 is refracted at the interface between the air and the condensing lens 2 to form a converging effect, and the light intensity received by the photosensitive device 4 is higher; when the container 1 is filled with liquid, the difference of the medium refractive indexes of the interfaces of the liquid and the condensing lens 2 is smaller than that of the interfaces of the air and the condensing lens 2, and under the condition that the space around the condensing lens 2 is filled with the liquid according to the law of refraction, the converging effect of the condensing lens 2 is poorer than that of the space around the condensing lens 2 filled with the air, so that the light intensity received by the photosensitive device 4 is smaller. The utility model can be arranged at the bottom of the container 1 to judge whether the liquid in the container 1 is empty, such as an intelligent kettle, a fish tank, an oil tank and the like; or a specific height is arranged in the container 1 to judge whether the liquid level height of the liquid in the container 1 reaches the position; or the device is applied to a medical infusion device, is arranged at the mouth of a transfusion bottle and gives an alarm when the transfusion bottle is dripped quickly; or the container 1 is made into a mode that the upper part and the lower part are respectively provided with a connector and is connected in series between the transfusion bottle and the transfusion tube so as to monitor whether the medicine water in the transfusion bottle is completely transfused.
Specifically, the condensing lens 2 is a spherical shape with two symmetrical surfaces and protruding outward, so that both sides of the condensing lens 2 have a condensing effect, and light passing through the condensing lens 2 is converged at optical focal positions on both sides of the condensing lens 2.
Further, as shown in fig. 3 and 4, the light emitting device 3 and the light sensing device 4 are fixed at the optical focal points on both sides of the condenser lens 2, and the width of the container 1 is not less than twice the distance from the condenser lens 2 to the optical focal points. In the using process, the optical focal point of the light-emitting device 3 and the light-sensing device 4 is close to, so that more light is converged on the light-sensing device 4, and the monitoring precision is improved. The focal length of the condenser lens 2 can be properly adjusted by modifying the curved surface shape of the condenser lens 2 according to the actual application field requirements, so as to be suitable for containers 1 with different sizes.
Specifically, the light emitting device 3 and the light sensing device 4 are respectively connected with an external power supply. The light emitting device 3 is connected with an external power supply through a lead, and the light emitting device 3 converts current provided by the power supply into light to be emitted.
Specifically, the light sensing device 4 is connected with a reminding device. The light emitting device 3 is connected with an external power supply and a reminding device through wires respectively, the light sensing device 4 needs the power supply to provide voltage, and light received by the light sensing device 4 is converted into voltage through circuits such as series resistors and the like to be output to the reminding device or other devices, so that an effective reminding function is realized, and the safety of production and life is guaranteed.
Preferably, under the condition that light passing is not influenced, the transparent waterproof sleeve can be wrapped outside the light-emitting device 3 and the photosensitive device 4, the light-emitting device 3 and the photosensitive device 4 are prevented from being damaged due to water entering in liquid, light can penetrate through the waterproof sleeve, and the using effect is not influenced. As another embodiment, the light-emitting device 3 and the light-sensing device 4 can be arranged outside the container 1, the light of the light-emitting device 3 outside the container 1 can be led to the focal position of the condensing lens 2 in the container 1 by adopting optical fibers, and the light can be led out at the focal position of the condensing lens 2 by adopting optical fibers on the other side, in this case, a transparent waterproof sleeve is not needed.
Specifically, the light emitting device 3 is a light emitting diode. In practical applications, different light emitting devices 3 can be replaced according to different requirements.
Specifically, the light sensing device 4 is a photo transistor or a photo diode, and a photo ic may be used to facilitate connection with other circuits.
The utility model relates to a container, which is characterized in that light emitted by a light-emitting device arranged in the container passes through a condensing lens, the condensing lens is in different refraction light intensities in the air and in liquid, and the light-emitting device is induced by a photosensitive device to generate voltage, and then is connected with a reminding device to remind a certain degree, so that the technical problems that whether transparent liquid exists in the container or not is difficult to distinguish and long-time monitoring cannot be realized in the prior art are solved. The utility model can monitor the liquid height in the container for a long time, provides safety guarantee for production life, can easily judge whether the container contains transparent liquid, and is simple and convenient.
The parts not involved in the present invention are the same as or can be implemented by the prior art. Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (7)
1. A liquid sensor optical structure, characterized by: the light-emitting device and the photosensitive device are respectively arranged on two sides of the condensing lens, the condensing lens is a double-sided condensing lens, the light-emitting device and the photosensitive device are fixed in a container, and the light-emitting device and the photosensitive device are opposite in position.
2. The liquid sensor optical structure of claim 1, wherein the condenser lens is bilaterally symmetrical and outwardly convex in spherical shape.
3. The optical liquid sensor structure according to claim 1, wherein the light emitting device and the light sensing device are fixed at optical focal points on both sides of the condenser lens, and the width of the container is not less than twice the distance from the condenser lens to the optical focal points.
4. The liquid sensor optical structure according to claim 1, wherein an external power supply is coupled to the light emitting device and the light sensing device, respectively.
5. The liquid sensor optical structure according to claim 1, wherein a reminder device is coupled to the light sensing device.
6. The liquid sensor optical structure of claim 1, wherein the light emitting device is a light emitting diode.
7. The liquid sensor optical structure of claim 1, wherein the light sensing device is a phototransistor or a photodiode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123224735.7U CN216695180U (en) | 2021-12-21 | 2021-12-21 | Optical structure of liquid sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123224735.7U CN216695180U (en) | 2021-12-21 | 2021-12-21 | Optical structure of liquid sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216695180U true CN216695180U (en) | 2022-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202123224735.7U Active CN216695180U (en) | 2021-12-21 | 2021-12-21 | Optical structure of liquid sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN216695180U (en) |
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2021
- 2021-12-21 CN CN202123224735.7U patent/CN216695180U/en active Active
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