CN213090895U - Sensor for measuring liquid level in test tube - Google Patents
Sensor for measuring liquid level in test tube Download PDFInfo
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- CN213090895U CN213090895U CN202022485582.0U CN202022485582U CN213090895U CN 213090895 U CN213090895 U CN 213090895U CN 202022485582 U CN202022485582 U CN 202022485582U CN 213090895 U CN213090895 U CN 213090895U
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Abstract
The utility model discloses a sensor for measuring liquid level in test tube relates to liquid level sensing technical field, which comprises a base, be equipped with respectively in the base and hold the chamber and survey and establish the mouth, hold the chamber with survey and establish the test slot that is equipped with the matching between the mouth and sets up, be equipped with infrared transmitting terminal and infrared receiving terminal in the test slot respectively, infrared transmitting terminal to survey and establish intraoral transmission infrared signal, infrared receiving terminal receive to survey and establish intraoral transmission's infrared signal, just infrared transmitting terminal with infrared receiving terminal is connected with the ADC module through the wire respectively, the ADC module is used for handling infrared signal. The utility model discloses a ADC module handles the judgement to infrared signal, and it realizes not only that long service life, the dependable performance steady quality, and the cost is with low costs moreover, uses portably, and convenient the change, can adapt to the test demand under the different environment, and the range of application is wide, and the measuring accuracy is high and efficient.
Description
Technical Field
The utility model relates to a liquid level sensing technical field particularly, relates to a sensor for measuring liquid level in test tube.
Background
A level sensor (static pressure level gauge/level transmitter/level sensor) is a type of pressure sensor that measures the liquid level. Static pressure drop-in level transmitters (level gauges) are based on the principle that the measured hydrostatic pressure of a liquid is proportional to the height of the liquid.
At present, the known liquid level sensors basically measure the height of a liquid level in liquid, most importantly, the liquid level at high temperature cannot be measured, and the service life and the quality of the liquid level sensors cannot be ensured due to the corrosion effect of the liquid when the liquid level sensors are soaked in the liquid environment for a long time. In addition, the scheme that optical fibers are mostly adopted for fixing the liquid level in the current measuring test tube can overcome the defects that the occupied space is large, the optical fibers cannot be bent, the cost is high, and the problems that the switching is difficult and the molds are required to be opened for fixing the two ends of the optical fibers in the process of switching the optical fibers into electricity are solved.
Retrieve chinese utility model patent CN105547417A discloses a liquid level sensor, the keg float that is the full enclosure wall in the container is in constant head tank or fixed network, there is fixed permanent magnet on the keg float, there are magnetic induction electronic component on electronic component circuit board and the circuit board outside the container, the component and the liquid of measuring liquid are kept apart to guaranteed entire system's security and reliability, extensively be used for the control of various normal atmospheric temperature liquid container and the liquid container that has certain temperature and pressure and the water level monitoring of various boilers. But still has the problems of limited use and low measurement accuracy and efficiency.
An effective solution to the problems in the related art has not been proposed yet.
SUMMERY OF THE UTILITY MODEL
To the problem among the correlation technique, the utility model provides a sensor for measuring liquid level in test tube handles the judgement through the ADC module to infrared signal, and it realizes not only that long service life, dependable performance steady quality, cost is with low costs moreover, uses portably, and convenient the change, can adapt to the test demand under the different environment, and the range of application is wide, and the test accuracy is high and efficient to overcome the above-mentioned technical problem that current correlation technique exists.
The technical scheme of the utility model is realized like this:
a sensor for measuring liquid level in a test tube comprises a base, wherein a containing cavity and a measuring port are respectively arranged in the base, a test slot which is arranged in a matched mode is arranged between the containing cavity and the measuring port, and an infrared transmitting end and an infrared receiving end are respectively arranged in the test slot;
the infrared transmitting end transmits infrared signals to the measuring and setting port, the infrared receiving end receives the infrared signals transmitted to the measuring and setting port, the infrared transmitting end and the infrared receiving end are respectively connected with an ADC (Analog-to-digital converter) module through leads, and the ADC module is used for processing the infrared signals.
Further, infrared transmitting terminal pin connecting resistance R1, infrared receiving terminal pin connecting resistance R2, resistance R1 with resistance R2 connects the GND pin, just infrared transmitting terminal pin with VCC pin is connected to the infrared receiving terminal pin, electric capacity C1 is connected to resistance R2, the infrared receiving terminal pin is connected ADC module pin.
Furthermore, the included angle between the infrared transmitting end and the infrared receiving end is between 100 degrees and 160 degrees.
Furthermore, a wire outlet is formed in the base, wires of the infrared transmitting end and the infrared receiving end penetrate through the wire outlet to be connected with the ADC module, and the ADC module is connected with one side of the base.
Furthermore, the cavity is filled with epoxy resin glue.
Furthermore, the ADC module is of a type of LTC2495 chip.
The utility model has the advantages that:
the utility model is used for measure the sensor of liquid level in the test tube, be equipped with in the integrated base and hold the chamber and survey and establish the mouth, establish the test slot that is equipped with the matching setting between the mouth through holding the chamber and surveying, its test slot is equipped with infrared transmitting terminal and infrared receiving terminal respectively, establish intraoral transmission infrared signal through infrared transmitting terminal to surveying, infrared receiving terminal receives establishes intraoral transmission's infrared signal to surveying, and handle the judgement to infrared signal through the ADC module, it realizes not only long service life, the dependable performance stable in quality, and the cost is with low costs, it is simple and convenient to use, and convenient the change, can adapt to the test demand under the different environment, the range of application is wide, and the high and efficient of test accuracy.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a sensor for measuring a liquid level in a test tube according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a portion of a first electrical circuit of a sensor for measuring a liquid level in a cuvette according to an embodiment of the present invention;
fig. 3 is a schematic partial circuit diagram of a sensor for measuring a liquid level in a test tube according to an embodiment of the present invention.
In the figure:
1. a base; 2. a cavity; 3. measuring and arranging a port; 4. testing the slot; 5. an infrared emitting end; 6. an infrared receiving end; 7. and an ADC module.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.
According to the utility model discloses an embodiment provides a sensor for measuring liquid level in test tube.
As shown in fig. 1-3, a sensor for measuring a liquid level in a test tube according to an embodiment of the present invention includes a base 1, wherein a receiving cavity 2 and a measuring port 3 are respectively disposed in the base 1, a test slot 4 disposed in a matching manner is disposed between the receiving cavity 2 and the measuring port 3, and an infrared emitting end 5 and an infrared receiving end 6 are respectively disposed in the test slot 4;
the infrared transmitting end 5 to survey and establish the interior transmission infrared signal of mouth 3, infrared receiving terminal 6 receives to survey the infrared signal of establishing the interior transmission of mouth 3, just infrared transmitting end 5 with infrared receiving terminal 6 is connected with ADC module 7 through the wire respectively, ADC module 7 is used for handling infrared signal.
Wherein, 5 pin connecting resistance R1 of infrared transmitting terminal, 6 pin connecting resistance R2 of infrared receiving terminal, resistance R1 with the GND pin is connected to resistance R2, just 5 pins of infrared transmitting terminal with VCC pin is connected to 6 pins of infrared receiving terminal, electric capacity C1 is connected to resistance R2, 6 pin connections of infrared receiving terminal the ADC module 7 pin.
The included angle between the infrared transmitting end 5 and the infrared receiving end 6 is between 100 degrees and 160 degrees.
An outlet is formed in the base 1, wires of the infrared transmitting end 5 and the infrared receiving end 6 penetrate through the outlet and are connected with the ADC module 7, and the ADC module 7 is connected with one side of the base 1.
Wherein, the cavity 2 is filled with epoxy resin glue.
The ADC module 7 is of an LTC2495 chip type.
By means of the above-mentioned technical scheme, be equipped with in the integrated base and hold the chamber and survey and establish the mouth, establish through holding the chamber 2 and survey and be equipped with the test slot that the matching set up between the mouth 3, be equipped with infrared transmitting terminal 5 and infrared receiving terminal 6 in its test slot 4 respectively, establish the interior infrared signal of emission of mouth 3 through infrared transmitting terminal 5 to the survey, infrared receiving terminal 6 receives and establishes the infrared signal of the interior transmission of mouth 3 to the survey, and handle the judgement to infrared signal through ADC module 7, it realizes not only long service life, the dependable performance stable in quality, and the cost is with low costs, it is simple and convenient to use, and convenient the change, can adapt to the test demand under the different environment, the range of application is wide, and the test.
In addition, specifically, its appearance chamber 2 intussuseption is filled with epoxy glue, in order to prevent that infrared emission end 5, infrared receiving end 6 and wire rod junction from rustting, under specific frock, weld the lamp pearl to test slot 4 earlier after, at the encapsulating encapsulation.
In addition, specifically, the resistor R1 needs to adjust the resistance parameters according to the specific parameters of the infrared transmitting terminal 5, and the resistor R2 similarly needs to adjust the parameters according to the parameters of the infrared receiving terminal 6. Wherein the resistor R1 and the resistor R2 temporarily recommend 100R and 10K. VCC (supply voltage for the circuit) and GND (ground) are preferably connected to VCC and GND of the ADC module 7. The utility model discloses the VCC is 2.5V.
When the infrared receiving terminal 6 receives the infrared signal, the infrared receiving terminal is turned on, the voltage of the ADC module 7 is low (the voltage of the ADC is VCC-R2 ═ I infrared receiving terminal 6, which is not 0V, the current of the ADC module 7 depends on the received light intensity, and the voltage of the ADC module 7 on the right side is opposite to that on the left side ═ R2 ═ I infrared receiving terminal 6); when the infrared receiving end 6 is not connected to the infrared signal, the infrared receiving end is not conducted, and the voltage of the ADC module 7 is high voltage; by comparing the voltage values collected by the ADC block 7, a difference is formed. In addition, the environmental change value is converted into electrical parameters (voltage, current, etc., the utility model discloses in be voltage).
In addition, the scheme can realize cost reduction: the optical fiber needs to be provided with a mold, the utility model does not need to be provided with the mold, and the simple infrared transmitting and receiving geminate transistors in the market can be realized; volume reduction: the optical fiber scheme needs two optical fibers, one for transmitting and one for receiving, and cannot be bent; the wire rod is exposed outside the utility model, and the bending yield of the wire rod is far superior to that of the optical fiber; the replacement is convenient: the sensor of the scheme can be replaced by simply plugging and unplugging, and the optical fiber needs to be plugged into a position.
To sum up, with the help of the above technical scheme of the utility model, establish the mouth through being equipped with in the integrated base and holding the chamber and surveying, establish the test slot that is equipped with the matching and sets up between the mouth 3 through holding chamber 2 and surveying, be equipped with infrared transmitting terminal 5 and infrared receiving terminal 6 in its test slot 4 respectively, establish the interior infrared signal that launches of mouth 3 through infrared transmitting terminal 5 to the survey, infrared receiving terminal 6 receives establishes the infrared signal of the interior transmission of mouth 3 to the survey, and handle the judgement to infrared signal through ADC module 7, it realizes not only long service life, the dependable performance stable in quality, and the cost is with low costs, it is simple and convenient to use, and convenient the change, can adapt to the test demand under the different environment, the range of application is wide, and the test accuracy is high.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The sensor for measuring the liquid level in the test tube is characterized by comprising a base (1), wherein a containing cavity (2) and a measuring port (3) are respectively arranged in the base (1), a test slot (4) which is matched and arranged is arranged between the containing cavity (2) and the measuring port (3), and an infrared transmitting end (5) and an infrared receiving end (6) are respectively arranged in the test slot (4);
infrared emission end (5) to survey and establish the interior transmission infrared signal of mouth (3), infrared receiving terminal (6) receive to survey and establish the infrared signal of mouth (3) interior transmission, just infrared emission end (5) with infrared receiving terminal (6) are connected with ADC module (7) through the wire respectively, ADC module (7) are used for handling infrared signal.
2. The sensor for measuring the liquid level in the test tube according to claim 1, wherein the pin of the infrared transmitting terminal (5) is connected with a resistor R1, the pin of the infrared receiving terminal (6) is connected with a resistor R2, the resistor R1 and the resistor R2 are connected with a GND pin, the pin of the infrared transmitting terminal (5) and the pin of the infrared receiving terminal (6) are connected with a VCC pin, the resistor R2 is connected with a capacitor C1, and the pin of the infrared receiving terminal (6) is connected with the pin of the ADC module (7).
3. The sensor for measuring the liquid level in the test tube according to claim 1, characterized in that the angle between the infrared emitting end (5) and the infrared receiving end (6) is between < 100 ° and < 160 °.
4. The sensor for measuring the liquid level in the test tube according to claim 1, wherein an outlet is formed in the base (1), the wires of the infrared emitting end (5) and the infrared receiving end (6) penetrate through the outlet to be connected with the ADC module (7), and the ADC module (7) is connected with one side of the base (1).
5. Sensor for measuring the liquid level in a cuvette according to claim 4, wherein the chamber (2) is filled with epoxy glue.
6. Sensor for measuring the liquid level in a cuvette according to claim 1, characterized in that the ADC module (7) is of the type LTC2495 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022485582.0U CN213090895U (en) | 2020-10-30 | 2020-10-30 | Sensor for measuring liquid level in test tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022485582.0U CN213090895U (en) | 2020-10-30 | 2020-10-30 | Sensor for measuring liquid level in test tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213090895U true CN213090895U (en) | 2021-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022485582.0U Active CN213090895U (en) | 2020-10-30 | 2020-10-30 | Sensor for measuring liquid level in test tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213090895U (en) |
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2020
- 2020-10-30 CN CN202022485582.0U patent/CN213090895U/en active Active
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