CN219714490U - Ultrasonic liquid level detection module and system - Google Patents
Ultrasonic liquid level detection module and system Download PDFInfo
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- CN219714490U CN219714490U CN202223114143.4U CN202223114143U CN219714490U CN 219714490 U CN219714490 U CN 219714490U CN 202223114143 U CN202223114143 U CN 202223114143U CN 219714490 U CN219714490 U CN 219714490U
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model relates to an ultrasonic liquid level detection module and system, comprising a circuit board and an ultrasonic probe, wherein a detection part of the ultrasonic probe is sleeved with a coupling rubber sleeve, the outer end surface of the coupling rubber sleeve is tightly attached to the bottom of the outer wall of a liquid container, and the ultrasonic probe is electrically connected with the circuit board; the ultrasonic probe is used for transmitting ultrasonic signals to the tested liquid in the liquid container under the driving signals output by the circuit board; the device is also used for receiving echo signals corresponding to the ultrasonic signals; the circuit board is used for outputting the initial liquid level position information of the measured liquid in a state of receiving the echo signals. The ultrasonic liquid level detection module and the ultrasonic liquid level detection system can accurately measure the liquid level position in the liquid container.
Description
Technical Field
The utility model relates to the technical field of instruments, in particular to an ultrasonic liquid level detection module and an ultrasonic liquid level detection system.
Background
Along with the development of technology, the distance measurement technology is more and more diversified. In order to obtain more accurate level data, improvements to the level measurement device are often required.
Currently, in the measurement of the liquid level of a liquid, an ultrasonic sensor is often used to measure the liquid level by emitting an ultrasonic signal. However, when the ultrasonic signal is emitted to the liquid to be measured, the thickness of the bottom of the liquid container is often different, so that certain loss is generated in the ultrasonic signal in the transmission process, and the measurement of the liquid level is not accurate enough.
Therefore, the conventional technology has a problem that the liquid level measurement is not accurate enough.
Disclosure of Invention
Accordingly, there is a need for an ultrasonic liquid level detection module and system that address the above-mentioned issues. The ultrasonic liquid level detection module and the ultrasonic liquid level detection system can enable liquid level measurement to be more accurate.
The ultrasonic liquid level detection module is characterized by comprising a circuit board and an ultrasonic probe, wherein a detection part of the ultrasonic probe is sleeved with a coupling rubber sleeve, the outer end surface of the coupling rubber sleeve is tightly attached to the bottom of the outer wall of the liquid container, and the ultrasonic probe is electrically connected with the circuit board;
the ultrasonic probe is used for transmitting ultrasonic signals to the tested liquid in the liquid container under the driving signals output by the circuit board; the device is also used for receiving echo signals corresponding to the ultrasonic signals;
and the circuit board is used for outputting the liquid level position information of the measured liquid in a state of receiving the echo signals.
In one embodiment, the end face of the ultrasonic probe on the side away from the probe part is soldered to the circuit board.
In one embodiment, the ultrasonic liquid level detection module further comprises a main body housing; the coupling rubber sleeve, the ultrasonic probe and the circuit board are all positioned in the main body shell;
wherein, one end is equipped with the through-hole in the main part shell, and the coupling gum cover can contact with one end in the main part shell and offset, and the coupling gum cover is equipped with the bellying of card income through-hole.
In one embodiment, the ultrasonic liquid level detection module further comprises a connecting wire;
one end of the connecting wire is welded on the circuit board and is electrically connected with the circuit board, and the other end of the connecting wire extends to the outside of the main body shell from the other end through hole of the main body shell.
In one embodiment, an electronic potting adhesive is poured into the main body housing.
In one embodiment, the circuit board comprises a boost circuit, an echo signal processing circuit and a controller;
a controller for sending a driving signal to the boost circuit;
the booster circuit is used for boosting the driving signal to obtain a boosted driving signal and sending the boosted driving signal to the ultrasonic probe;
the echo signal processing circuit is used for receiving the echo signal returned by the ultrasonic probe and carrying out optimization processing on the echo signal to obtain a processed echo signal;
and the controller is used for determining the initial liquid level position information of the measured liquid according to the processed echo signals.
In one embodiment, the echo signal processing circuit includes a filter circuit and an amplifying circuit;
the filtering circuit is used for filtering the echo signals returned by the ultrasonic probe to obtain filtered echo signals;
and the amplifying circuit is used for carrying out signal amplification processing on the filtered echo signals to obtain processed echo signals.
In one embodiment, the circuit board further comprises a power supply circuit; the power supply circuit is in power supply connection with the controller.
In one embodiment, the controller is a micro-control unit.
An ultrasonic liquid level detection system comprises the ultrasonic liquid level detection module.
According to the ultrasonic liquid level detection module and the ultrasonic liquid level detection system, the ultrasonic probe transmits ultrasonic signals to the detected liquid in the liquid container under the driving signals output by the circuit board, receives echo signals corresponding to the ultrasonic signals, and the circuit board outputs liquid level position information of the detected liquid under the state of receiving the echo signals; so, can realize penetrating the liquid container shell again after the ultrasonic signal that ultrasonic transducer transmitted through the coupling gum cover to less energy loss propagates to the liquid that is surveyed in, make ultrasonic signal's transmission more stable and reliable, make liquid level measurement more accurate, and, coupling gum cover outer terminal surface closely laminates with the outer wall bottom of liquid container, can reduce ultrasonic signal from transmitting to the energy loss before getting into the liquid that is surveyed, simultaneously, this ultrasonic liquid level detection module can be isolated by the corruption of liquid that is surveyed, do not influence the quality of water of liquid that is surveyed.
Drawings
FIG. 1 is a block diagram of an ultrasonic liquid level detection module in one embodiment;
FIG. 2 is a schematic diagram showing the positional relationship between a main body casing and a coupling gum cover in an embodiment;
FIG. 3 is a flow chart of a circuit board processing electrical signals in one embodiment;
fig. 4 is a schematic diagram of a water level measurement system according to an embodiment.
Reference numerals illustrate: 102-circuit board, 104-ultrasonic probe, 106-coupling gum cover, 108-main body shell, 110-connecting wire.
Detailed Description
In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.
In the description of the present utility model, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the description of the present utility model, it will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly connected" to another element, there are no intervening elements present.
For ease of understanding by those skilled in the art, FIG. 1 provides a block diagram of an ultrasonic liquid level detection module; wherein, this ultrasonic wave liquid level detection module includes: the ultrasonic probe comprises a circuit board and an ultrasonic probe, wherein a detection part of the ultrasonic probe is sleeved with a coupling rubber sleeve, the outer end face of the coupling rubber sleeve is tightly attached to the bottom of the outer wall of the liquid container, and the ultrasonic probe is electrically connected with the circuit board.
The ultrasonic probe is used for transmitting ultrasonic signals to the tested liquid in the liquid container under the driving signals output by the circuit board; and is also used for receiving echo signals corresponding to the ultrasonic signals.
The circuit board is used for outputting the liquid level position information of the measured liquid in a state of receiving the echo signals.
The ultrasonic probe comprises a detection part, a detection part and a detection part, wherein the detection part of the ultrasonic probe is used for transmitting ultrasonic signals to the tested liquid and receiving echo signals corresponding to the ultrasonic signals.
In the specific implementation, the ultrasonic probe sends ultrasonic signals through the driving signals of the circuit board, the ultrasonic signals pass through the coupling rubber sleeve and then pass through the bottom of the measured container and finally pass through the measured liquid, the ultrasonic probe receives echo signals of the ultrasonic signals, the circuit board determines the liquid level information of the measured liquid according to the flight time from the ultrasonic probe to the ultrasonic probe receiving the echo signals according to the ultrasonic signals transmitted by the ultrasonic probe, and the liquid level information of the measured liquid is output by the circuit board in the state of receiving the echo signals according to the propagation speed of the acoustic signals.
The ultrasonic liquid level detection module is used for transmitting ultrasonic signals to the liquid to be detected in the liquid container under the driving signals output by the circuit board, receiving echo signals corresponding to the ultrasonic signals, and outputting liquid level position information of the liquid to be detected under the state that the circuit board receives the echo signals; so, can realize penetrating the liquid container shell again after the ultrasonic signal that ultrasonic transducer transmitted through the coupling gum cover to less energy loss propagates to the liquid that is surveyed in, make ultrasonic signal's transmission more stable and reliable, make liquid level measurement more accurate, and, coupling gum cover outer terminal surface closely laminates with the outer wall bottom of liquid container, can reduce ultrasonic signal from transmitting to the energy loss before getting into the liquid that is surveyed, simultaneously, this ultrasonic liquid level detection module can be isolated by the corruption of liquid that is surveyed, do not influence the quality of water of liquid that is surveyed.
In another embodiment, an end face of the ultrasonic probe on a side away from the probe portion is soldered to the wiring board.
In the specific implementation, one end of the ultrasonic probe, which is provided with the detection part, is firmly sleeved with the coupling rubber sleeve, and one end face of the ultrasonic probe, which is far away from the detection part, is welded on the circuit board through a lead.
According to the technical scheme of the embodiment, the end face of one side of the ultrasonic probe, which is far away from the detection part, is welded on the circuit board, so that the probe core in the ultrasonic probe can transmit ultrasonic signals to the liquid to be detected through the driving signals sent by the circuit board.
In another embodiment, the ultrasonic liquid level detection module further comprises a main body housing; the coupling rubber sleeve, the ultrasonic probe and the circuit board are all positioned in the main body shell; wherein, one end is equipped with the through-hole in the main part shell, and the coupling gum cover can contact with one end in the main part shell and offset, and the coupling gum cover is equipped with the bellying of card income through-hole.
In specific implementation, the ultrasonic probe has the one end of detection portion and the cover of coupling gum cover to be firm, and ultrasonic probe keeps away from the one end terminal surface of detection portion and passes through wire bonding on the circuit board, and wherein, the sub-assembly that coupling gum cover, ultrasonic probe and circuit board formed all is arranged in the main part shell of ultrasonic liquid level detection module, and main part shell has both ends through-hole, and the one end contact in coupling gum cover and the main part shell offsets to the coupling gum cover has a protruding portion, and this protruding portion can block into the one end through-hole in the main part shell for the sub-assembly that coupling gum cover, ultrasonic probe and circuit board formed can be firm with the main part shell, can not become flexible.
For ease of understanding by those skilled in the art, fig. 2 schematically provides a schematic view of the positional relationship of the main body casing and the coupling gum cover.
According to the technical scheme, the ultrasonic liquid level detection module further comprises a main body shell, the coupling rubber sleeve, the ultrasonic probe and the circuit board are all located in the main body shell, a through hole is formed in one end of the main body shell, the coupling rubber sleeve can be in contact with one end of the main body shell, the coupling rubber sleeve is provided with a protruding portion clamped into the through hole, the ultrasonic liquid level detection module can be kept fixed, each element cannot be loosened, and normal operation of the ultrasonic detection module can be guaranteed.
In another embodiment, the ultrasonic liquid level detection module further comprises a connecting wire; one end of the connecting wire is welded on the circuit board and is electrically connected with the circuit board, and the other end of the connecting wire extends to the outside of the main body shell from the other end through hole of the main body shell.
In specific implementation, the connecting wire one end of ultrasonic liquid level detection module welds in the circuit board, is connected with the circuit board, and the connecting wire of ultrasonic liquid level module extends to the outside of main body shell from the other end through-hole of main body shell.
According to the technical scheme of the embodiment, one end of a connecting wire of the ultrasonic liquid level detection module is welded to the circuit board and electrically connected with the circuit board, the other end of the connecting wire extends to the outside of the main body shell from the other end through hole of the main body shell, and the connecting wire is connected with other elements, so that the ultrasonic liquid level detection module can work together with other electrical elements.
In another embodiment, the main body housing is filled with an electronic potting adhesive.
The electronic pouring sealant can be organic silicon pouring sealant, epoxy resin pouring sealant, heat conduction pouring sealant, polyurethane pouring sealant, LED pouring sealant and the like.
In specific implementation, the ultrasonic probe in the liquid level measurement system needs to bond all elements in the ultrasonic probe through electronic pouring sealant glue.
According to the technical scheme, the main body shell is internally filled with the electronic pouring sealant, all elements in the ultrasonic liquid level detection module are bonded, interference of external environment to all elements is effectively prevented, and normal operation of liquid level measurement is guaranteed.
In another embodiment, the circuit board includes a boost circuit, an echo signal processing circuit, and a controller.
The controller is used for sending a driving signal to the boost circuit.
The booster circuit is used for boosting the driving signal to obtain a boosted driving signal and sending the boosted driving signal to the ultrasonic probe.
The echo signal processing circuit is used for receiving the echo signal returned by the ultrasonic probe and carrying out optimization processing on the echo signal to obtain a processed echo signal.
And the controller is used for determining the initial liquid level position information of the measured liquid according to the processed echo signals.
In the specific implementation, a circuit board sends a driving signal to a boosting circuit through a controller, the boosting circuit boosts the driving signal to obtain a boosted driving signal, and the boosted driving signal is sent to an ultrasonic probe; after the ultrasonic probe transmits ultrasonic signals to the tested liquid, the ultrasonic signals pass through the tested liquid and are reflected at the interface between the tested liquid and air to form echo signals, the ultrasonic probe receives the echo signals corresponding to the ultrasonic signals, and the echo signal processing circuit optimizes the echo signals to obtain processed echo signals.
According to the technical scheme, the circuit board comprises a booster circuit, an echo signal processing circuit and a controller, the booster circuit can enable the ultrasonic probe to emit stronger ultrasonic signals, the penetrating capacity of the ultrasonic signals is enhanced, the stability and the sensitivity of the ultrasonic signals are kept, the ultrasonic probe can be suitable for liquid containers with different bottom thicknesses, the echo signal processing circuit can optimize the echo signals of the ultrasonic signals received by the ultrasonic probe, interference of other signals is reduced, more accurate processing of ultrasonic signal information is facilitated, and a liquid level measuring result is more accurate.
In another embodiment, the echo signal processing circuit includes a filter circuit and an amplifying circuit.
The filtering circuit is used for filtering the echo signals returned by the ultrasonic probe to obtain filtered echo signals.
The amplifying circuit is used for carrying out signal amplification processing on the filtered echo signals to obtain processed echo signals.
In specific implementation, the echo signals returned by the ultrasonic probe are processed by the filter circuit to form filtered echo signals, and the filtered echo signals are processed by the amplifying circuit to form processed echo signals.
According to the technical scheme, the echo signal processing circuit comprises the filtering circuit and the amplifying circuit, filtering processing of the echo signals can be achieved, interference of other signals is reduced, the filtered echo signals can be amplified, weak echo signals are amplified, and therefore the controller can process the echo signals, and accordingly liquid level measurement is achieved.
In another embodiment, the circuit board further comprises a power supply circuit; the power supply circuit is in power supply connection with the controller.
In the specific implementation, a power supply circuit is arranged in the circuit board and is in power supply connection with the controller, and the controller can provide electric energy for the circuit board through the power supply circuit so that the ultrasonic probe can work normally.
According to the technical scheme, the circuit board further comprises a power supply circuit, the power supply circuit is in power supply connection with the controller and can provide electric energy for the circuit board, so that the ultrasonic probe can work normally, ultrasonic signals are emitted to liquid to be measured, and liquid level measurement is achieved.
In another embodiment, the controller is a micro-control unit.
The controller may be a chip-level computer, for example, a single-chip microcomputer or a single-chip microcomputer.
In a specific implementation, the controller can provide control functions for a circuit board in the liquid level measurement system.
For ease of understanding by those skilled in the art, fig. 3 illustratively provides a flow chart of processing of electrical signals by a circuit board. The power supply circuit provides electric energy, the driving signal is boosted through the MCU singlechip, the 2MHz high-frequency probe is driven to transmit ultrasonic signals to the tested liquid through the double-channel PWM wave (a method for digitally encoding the analog signal level), the 2MHz high-frequency probe filters the received echo signals through the filter circuit, the amplification circuit amplifies the received echo signals, and finally the MCU singlechip processes data.
According to the technical scheme, the controller is a micro control unit, can control the ultrasonic liquid level detection module, has higher operation efficiency, and enables liquid level measurement to be more accurate.
In another embodiment, a fluid level measurement system is provided. An ultrasonic liquid level detection module of a liquid level measurement system herein may be an ultrasonic liquid level detection module of each of the above embodiments. For ease of understanding by those skilled in the art, fig. 4 schematically provides a schematic diagram of a water level measurement system in which the ultrasonic level detection module is employed.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. The ultrasonic liquid level detection module is characterized by comprising a circuit board and an ultrasonic probe, wherein a detection part of the ultrasonic probe is sleeved with a coupling rubber sleeve, the outer end surface of the coupling rubber sleeve is tightly attached to the bottom of the outer wall of a liquid container, and the ultrasonic probe is electrically connected with the circuit board;
the ultrasonic probe is used for transmitting ultrasonic signals to the tested liquid in the liquid container under the driving signals output by the circuit board; the device is also used for receiving echo signals corresponding to the ultrasonic signals;
the circuit board is used for outputting the liquid level position information of the measured liquid in a state of receiving the echo signals.
2. The ultrasonic liquid level detection module according to claim 1, wherein an end face of the ultrasonic probe on a side away from the detection portion is welded to the circuit board.
3. The ultrasonic liquid level detection module of claim 1, further comprising a main body housing; the coupling rubber sleeve, the ultrasonic probe and the circuit board are all positioned in the main body shell;
the coupling rubber sleeve can contact and prop against one end in the main body shell, and the coupling rubber sleeve is provided with a protruding part clamped into the through hole.
4. The ultrasonic liquid level detection module of claim 3, wherein the ultrasonic liquid level detection module further comprises a connecting wire;
one end of the connecting wire is welded to the circuit board and is electrically connected with the circuit board, and the other end of the connecting wire extends from the through hole at the other end of the main body shell to the outside of the main body shell.
5. The ultrasonic liquid level detection module of claim 4, wherein the main body housing is filled with an electronic potting adhesive.
6. The ultrasonic liquid level detection module of claim 1, wherein the circuit board comprises a boost circuit, an echo signal processing circuit, and a controller;
the controller is used for sending a driving signal to the boost circuit;
the booster circuit is used for boosting the driving signal to obtain a boosted driving signal and sending the boosted driving signal to the ultrasonic probe;
the echo signal processing circuit is used for receiving the echo signal returned by the ultrasonic probe and carrying out optimization processing on the echo signal to obtain a processed echo signal;
and the controller is used for determining the liquid level position information of the measured liquid according to the processed echo signals.
7. The ultrasonic liquid level detection module of claim 6, wherein the echo signal processing circuit comprises a filter circuit and an amplifying circuit;
the filtering circuit is used for filtering the echo signals returned by the ultrasonic probe to obtain filtered echo signals;
and the amplifying circuit is used for carrying out signal amplification processing on the filtered echo signals to obtain processed echo signals.
8. The ultrasonic liquid level detection module of claim 6, wherein the circuit board further comprises a power supply circuit; the power supply circuit is in power supply connection with the controller.
9. The ultrasonic liquid level detection module of claim 6, wherein the controller is a micro-control unit.
10. An ultrasonic liquid level detection system, comprising: the ultrasonic liquid level detection module of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223114143.4U CN219714490U (en) | 2022-11-22 | 2022-11-22 | Ultrasonic liquid level detection module and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223114143.4U CN219714490U (en) | 2022-11-22 | 2022-11-22 | Ultrasonic liquid level detection module and system |
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| Publication Number | Publication Date |
|---|---|
| CN219714490U true CN219714490U (en) | 2023-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223114143.4U Active CN219714490U (en) | 2022-11-22 | 2022-11-22 | Ultrasonic liquid level detection module and system |
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| Country | Link |
|---|---|
| CN (1) | CN219714490U (en) |
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2022
- 2022-11-22 CN CN202223114143.4U patent/CN219714490U/en active Active
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