CN211042399U - Liquid level detecting device for clamping pipe - Google Patents
Liquid level detecting device for clamping pipe Download PDFInfo
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- CN211042399U CN211042399U CN201922135463.XU CN201922135463U CN211042399U CN 211042399 U CN211042399 U CN 211042399U CN 201922135463 U CN201922135463 U CN 201922135463U CN 211042399 U CN211042399 U CN 211042399U
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Abstract
The utility model discloses a clamp pipe liquid level detection device, including PCBA module, the metal clip and the liquid level detection circuit module of welding on the PCBA module, the liquid level detection circuit module sets up on the PCBA module, the liquid level detection circuit module includes metal probe, detection processing unit and sensitivity adjusting unit, metal probe and sensitivity adjusting unit are connected with detection processing unit respectively; the metal probe is buckled on the detected pipeline in a buckling mode to detect. The metal probe of the utility model is installed and fixed on the pipeline in a buckling mode, so that the metal probe is not required to be directly contacted by the detected liquid, mechanical components are not required, the cost is low, the installation is simple, the overall structure is simple, the integrated design is realized, the complex multi-structural component design is avoided, the secondary pollution to the liquid is avoided, and the metal probe is safe and reliable; the product cost is greatly reduced, and sensitivity matching adjustment can be carried out through the sensitivity adjusting unit, so that the detection precision is improved.
Description
Technical Field
The utility model belongs to the technical field of liquid detection device and specifically relates to a double-layered pipe liquid level detection device.
Background
At present, in the water dispensers, coffee machines, water purifiers, tea making machines and other products of consumer electronic products which need to be used for pumping water, sensors for detecting liquid are mostly used for detecting through simple mechanical components by utilizing the liquid position height. For example: a floating ball or spring module is matched with a reed switch and a Hall switch (magnetic switch) to monitor the liquid level; the separation is that the detection individuals have larger difference, which causes large error of water level monitoring, or dry burning or detection failure condition caused by the blockage of structural components. In addition, the mechanical device has the problems of abrasion and corrosion in a long-term working state, secondary pollution caused by naked metal parts in detected liquid, difficulty in cleaning and the like. In addition, most mechanical devices have high installation and production requirements, and inevitably bring about the problems of increased production cost and use cost.
Therefore, improvements to the prior art are yet to be made.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a double-layered pipe liquid level detection device, it is great to aim at in the error of listening of solving current liquid level detection device, causes the structure part card to die easily and leads to burning futilely or listen the inefficacy condition to and easy wearing and tearing and corruption cause the technical problem of the secondary pollution of liquid.
In order to achieve the above purpose, the technical scheme of the utility model is as follows: a liquid level detection device for a clamped pipe comprises a PCBA module, a metal clamp welded on the PCBA module and a liquid level detection circuit module, wherein the liquid level detection circuit module is arranged on the PCBA module and comprises a metal probe, a detection processing unit and a sensitivity adjusting unit, and the metal probe and the sensitivity adjusting unit are respectively connected with the detection processing unit; the metal probe is buckled on the detected pipeline in a buckling mode to detect.
The device is characterized in that the PCBA module comprises a voltage reduction unit and a reverse connection protection unit, the voltage reduction unit is respectively connected with a power supply and a ground wire, and the reverse connection protection unit is connected with the voltage reduction unit.
In the device for detecting the liquid level of the clamped tube, the voltage reduction unit comprises an RT9193-33GU5 chip, a capacitor C1, a resistor R1, a capacitor C2, a capacitor C3 and a capacitor C4; the resistor R1 is connected with a pin EN of the T9193-33GU5 chip and connected between an input unit and a pin VIN of the RT9193-33GU5 chip; the capacitor C2 is connected between a pin BP and a ground wire of the RT9193-33GU5 chip; the capacitor C3 and the capacitor C4 are connected in parallel and then connected between a pin OUT and a ground wire of the RT9193-33GU5 chip; one end of the capacitor C1 is connected between the reverse connection protection unit and the pin Vin of the RT9193-33GU5 chip, and the other end of the capacitor C1 is connected with the ground wire.
In the device for detecting the liquid level of the clamped tube, the reverse connection protection unit comprises a first connector and a diode, the anode of the diode is connected with the first connector, and the cathode of the diode is connected with the capacitor C1 and the pin Vin of the RT9193-33GU5 chip.
The liquid level detecting device for the clamping pipe is characterized in that the metal probe is a conductive metal elastic sheet.
The device for detecting the liquid level of the clamped pipe is characterized in that the detection processing unit is connected with the voltage reduction unit, a 6 th pin of the detection processing unit is connected with the metal probe, the detection processing unit and the metal probe form a front-end circuit, and a 3 rd pin of the detection processing unit is sequentially connected with a resistor R2 and a second connector to serve as a signal output circuit.
The liquid level detection device for clamping the tube, wherein the sensitivity adjusting unit comprises a capacitor C5 with an adjustable capacitance value, one end of the capacitor C5 is connected with the 5 th pin of the detection processing unit, and the other end is connected with the ground wire.
The liquid level detection device for the clamped tube is characterized in that the capacitor C1 is 10uF/16V, the capacitor C2 is 103 capacitors, the capacitor C3 is 10uF, the capacitor C4 is 0.1 uF, the resistor R1 is 10K, and the resistor R2 is 1K.
Has the advantages that: the metal probe of the utility model is fixed on the pipeline by the way of the buckle, so the metal probe is not needed to be directly contacted by the detected liquid, and the metal probe is not needed to be contacted by the mechanical component, the cost is low, the installation is simple, and the whole structure is simple, the integrated design avoids the complex multi-structural component design, because the metal probe is not provided with the mechanical structure at all and is not directly contacted with the liquid, the possibility of mechanical failure can not occur, and the metal probe can not generate secondary pollution to the body safely and reliably; the product cost is greatly reduced, and sensitivity matching adjustment can be carried out through the sensitivity adjusting unit, so that the detection precision is improved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a circuit diagram of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention will be described in further detail below with reference to the accompanying drawings and examples.
As shown in fig. 1-2, the utility model discloses a liquid level detection device for a clamped pipe, which comprises a PCBA module 1, a metal clamp 2 welded on the PCBA module 1 and a liquid level detection circuit module 3, wherein the liquid level detection circuit module 3 is arranged on the PCBA module 1, the liquid level detection circuit module 3 comprises a metal probe 4, a detection processing unit 5 and a sensitivity adjusting unit 6, and the metal probe 4 and the sensitivity adjusting unit 6 are respectively connected with the detection processing unit 5; the metal probe 4 is fastened on the detected pipeline 7 in a fastening mode for detection.
The double-headed arrows in fig. 1 indicate liquid level detection lines, and the arrows in the pipes indicate the water flow direction.
After the structure is adopted, the metal probe of the utility model is welded on the PCBA module, so that the metal probe can be directly buckled on a pipeline to carry out liquid level detection on the liquid, and the metal probe is composed of three components, has no mechanical structure completely and does not directly contact the liquid, so that the possibility of mechanical failure can not occur, the metal probe is safe and reliable, the product cost can be greatly reduced, and the metal probe is designed as an integration, thereby avoiding the design of complex multi-structural components; in addition, the sensitivity adjustment unit can be used for carrying out sensitivity matching adjustment, so that the detection precision is high. The pipe clamping liquid level detection device is characterized in that the PCBA module 3 comprises a voltage reduction unit 8 and a reverse connection protection unit 9, the voltage reduction unit 8 is respectively connected with a power supply and a ground wire, and the reverse connection protection unit 9 is connected with the voltage reduction unit 8.
After the structure is adopted, the voltage reduction unit of the utility model reduces the voltage of the high voltage and filters the high voltage to supply power for the power supply needed by the detection module, when the power supply is reversely linked, the circuit is reversely not conducted, the voltage reduction module does not work, and the protection unit is reversely connected to protect the rear voltage reduction unit and the detection unit; the voltage reduction and reverse connection protection unit circuit is adopted, so that failure and damage caused by installation errors are effectively avoided; therefore, the device can support high-voltage input and voltage reduction, and the practical universality is increased.
In the device for detecting the liquid level of the clamped tube, the voltage reduction unit 8 comprises an RT9193-33GU5 chip, a capacitor C1, a resistor R1, a capacitor C2, a capacitor C3 and a capacitor C4; the resistor R1 is connected with a pin EN of the T9193-33GU5 chip and connected between an input unit and a pin VIN of the RT9193-33GU5 chip; the capacitor C2 is connected between a pin BP and a ground wire of the RT9193-33GU5 chip; the capacitor C3 and the capacitor C4 are connected in parallel and then connected between a pin OUT and a ground wire of the RT9193-33GU5 chip; one end of the capacitor C1 is connected between the reverse connection protection unit and the pin Vin of the RT9193-33GU5 chip, and the other end of the capacitor C1 is connected with the ground wire.
After the structure is adopted, the utility model discloses a RT9193-33GU5 chip is as the stabiliser to cooperation electric capacity C1, electric capacity C2, electric capacity C3 and electric capacity C4 can realize stepping down, the steady voltage to the input high voltage power supply, thereby be fit for detecting processing unit and detecting the unit and use; the voltage range that makes this device can use is wider, and applicable scope is wider.
In the device for detecting the liquid level in the clamped tube, the reverse connection protection unit 9 includes a first connector 10 and a diode 11, an anode of the diode 11 is connected to the first connector 10, and a cathode of the diode 11 is connected to the capacitor C1 and the pin Vin of the RT9193-33GU5 chip.
By adopting the structure, the diode is used as the reverse connection protection element for circuit input, so when the power supply is reversely linked, the circuit is reversely not conducted, and the voltage reduction unit does not work, thereby protecting the rear-end voltage reduction unit and the detection unit.
The liquid level detecting device for the clamping pipe is characterized in that the metal probe 4 is a conductive metal elastic sheet, preferably an elastic copper clamping sheet, and the copper clamping sheet clamped on the pipeline can be correspondingly adjusted according to different diameters of the pipeline.
The pipe clamping liquid level detection device is characterized in that the detection processing unit 5 is connected with the voltage reduction unit 8, the 6 th pin of the detection processing unit 5 is connected with the metal probe 4, the detection processing unit 5 and the metal probe 4 form a front end circuit, and the 3 rd pin of the detection processing unit 5 is sequentially connected with the resistor R2 and the second connector 13 to serve as the signal output circuit 12.
After the structure of the oil-gas separator is adopted, the utility model discloses can give other equipment or displays with the liquid level data output of listening, so can provide the required signal of output according to the value of listening and use for required system.
In the device for detecting a liquid level in a clamped tube, the sensitivity adjusting unit 6 includes a capacitor C5 capable of adjusting a capacitance value, one end of the capacitor C5 is connected to the 5 th pin of the detection processing unit, and the other end is connected to a ground wire.
In actual production, the capacitor C5 may be an adjustable capacitance value capacitor or a fixed capacitance value capacitor, when the capacitor is installed as an adjustable capacitor, the capacitance value can be adjusted to perform sensitivity matching adjustment, when the capacitor is fixed, the size of the probe can be adjusted to be tight or loose to perform sensitivity adjustment, or the capacitance value can be adjusted by software inside the detection circuit module U02. When the capacitance C5 is taken as a fixed value, the capacitance value is 4.7 uF.
The liquid level detection device for the clamped tube is characterized in that the capacitor C1 is 10uF/16V, the capacitor C2 is 103 capacitors, the capacitor C3 is 10uF, the capacitor C4 is 0.1 uF, the resistor R1 is 10K, and the resistor R2 is 1K.
The liquid detected by the device is any conductive liquid, such as water, oil, milk, tea, essence and other liquids; according to different installation modes, the device can be used for detecting liquid level height/existence/bubbles and the like; the detected liquid can be matched and adjusted according to different conductivities.
The working principle is as follows: after the pipe clamping liquid level detection device is arranged on a detected pipeline, the detection module compares the detected value of the detection probe PIN6 with the detection value set by PIN5, when the detection value is smaller than the set value, the detection device outputs a stable signal to the system module through PIN3 to inform that the detected state is a liquid-free state, otherwise, the detected state is a liquid state; for example: the threshold of the detected value is defined, for example, the threshold is set to 15, when the detected value is about 15, the output is valid, and when the detected threshold is lower than 15, the output is invalid. When bubbles pass through the detection point, the detection device can output unstable high and low change signals to inform the system module that the detection state is bubble open.
According to different set sensitivities, the device can also be used for detecting conductors such as metal and the like, and the detection logic principle is the same as the above.
The utility model is a passive detection device, which is simple to install and has no secondary pollution; the above mentioned liquid can be milk, purified water, sewage, alcohol, gasoline, etc.; the device can be extended to related application devices with similar detection, multiple points and multiple segments.
The device has the following advantages:
the device is installed and fixed by using simple buckles, has no mechanical parts, low cost, simple installation and no pollution;
the device can adjust and detect according to pipelines with different diameters and different liquid conductivity;
the device can also be used for expanding the metal material approach detection, such as detection before collision of a running automobile;
the device is designed integrally, so that complicated multi-structural component design is avoided;
the device can adjust the detection sensitivity and improve the detection precision;
the device can carry out the extended detection of the detection points/sections according to the requirements;
the device is applied under the state that the design of the current product is not changed according to different scenes, and the use requirement is not limited.
The device has the advantages that the voltage is reduced, the protection unit circuit is connected reversely, and the failure and damage caused by installation errors are effectively avoided;
the device supports high-voltage input and voltage reduction, and the practicability and the universality are increased.
The metal probe of the utility model is fixed on the pipeline by the way of the buckle, so the metal probe is not needed to be directly contacted by the detected liquid, and the metal probe is not needed to be contacted by the mechanical component, the cost is low, the installation is simple, and the whole structure is simple, the integrated design avoids the complex multi-structural component design, because the metal probe is not provided with the mechanical structure at all and is not directly contacted with the liquid, the possibility of mechanical failure can not occur, and the metal probe can not generate secondary pollution to the body safely and reliably; the product cost is greatly reduced, and sensitivity matching adjustment can be carried out through the sensitivity adjusting unit, so that the detection precision is improved.
The above is a preferred embodiment of the present invention, and certainly not to limit the scope of the present invention, it should be noted that, for those skilled in the art, modifications or equivalent substitutions of the technical solutions of the present invention without creative efforts may not depart from the protection scope of the technical solutions of the present invention.
Claims (8)
1. A pipe clamping liquid level detection device is characterized by comprising a PCBA module, a metal clamp welded on the PCBA module and a liquid level detection circuit module, wherein the liquid level detection circuit module is arranged on the PCBA module and comprises a metal probe, a detection processing unit and a sensitivity adjusting unit, and the metal probe and the sensitivity adjusting unit are respectively connected with the detection processing unit; the metal probe is buckled on the detected pipeline in a buckling mode to detect.
2. The device for detecting the liquid level in the clamped pipe as claimed in claim 1, wherein the PCBA module comprises a voltage reduction unit and a reverse connection protection unit, the voltage reduction unit is respectively connected with a power supply and a ground wire, and the reverse connection protection unit is connected with the voltage reduction unit.
3. The device for detecting the liquid level in a clamped tube as claimed in claim 2, wherein the voltage-reducing unit comprises an RT9193-33GU5 chip, a capacitor C1, a resistor R1, a capacitor C2, a capacitor C3 and a capacitor C4; the resistor R1 is connected with a pin EN of the T9193-33GU5 chip and connected between an input unit and a pin VIN of the RT9193-33GU5 chip; the capacitor C2 is connected between a pin BP and a ground wire of the RT9193-33GU5 chip; the capacitor C3 and the capacitor C4 are connected in parallel and then connected between a pin OUT and a ground wire of the RT9193-33GU5 chip; one end of the capacitor C1 is connected between the reverse connection protection unit and the pin Vin of the RT9193-33GU5 chip, and the other end of the capacitor C1 is connected with the ground wire.
4. The apparatus as claimed in claim 3, wherein the reverse connection protection unit comprises a first connector and a diode, the anode of the diode is connected to the first connector, and the cathode of the diode is connected to the capacitor C1 and pin Vin of the chip RT9193-33GU 5.
5. The device for detecting the liquid level in a clamped tube of claim 1, wherein the metal probe is a conductive metal spring.
6. The device for detecting the liquid level in a clamped pipe as claimed in claim 3, wherein the detecting and processing unit is connected to the voltage reducing unit, the 6 th pin of the detecting and processing unit is connected to the metal probe, the detecting and processing unit and the metal probe form a front end circuit, and the 3 rd pin of the detecting and processing unit is sequentially connected to the resistor R2 and the second connector as a signal output circuit.
7. The apparatus as claimed in claim 1, wherein the sensitivity adjustment unit comprises a capacitor C5 with adjustable capacitance, one end of the capacitor C5 is connected to the 5 th pin of the detection processing unit, and the other end is connected to the ground.
8. The device as claimed in claim 6, wherein the capacitance C1 is 10uF/16V, the capacitance C2 is 103 capacitance, the capacitance C3 is 10uF, the capacitance C4 is 0.1 uF, the resistance R1 is 10K, and the resistance R2 is 1K.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922135463.XU CN211042399U (en) | 2019-12-03 | 2019-12-03 | Liquid level detecting device for clamping pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922135463.XU CN211042399U (en) | 2019-12-03 | 2019-12-03 | Liquid level detecting device for clamping pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211042399U true CN211042399U (en) | 2020-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922135463.XU Active CN211042399U (en) | 2019-12-03 | 2019-12-03 | Liquid level detecting device for clamping pipe |
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| Country | Link |
|---|---|
| CN (1) | CN211042399U (en) |
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- 2019-12-03 CN CN201922135463.XU patent/CN211042399U/en active Active
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