CN219935057U - Water level sensor for water storage tank of motor home - Google Patents
Water level sensor for water storage tank of motor home Download PDFInfo
- Publication number
- CN219935057U CN219935057U CN202321054408.8U CN202321054408U CN219935057U CN 219935057 U CN219935057 U CN 219935057U CN 202321054408 U CN202321054408 U CN 202321054408U CN 219935057 U CN219935057 U CN 219935057U
- Authority
- CN
- China
- Prior art keywords
- ultrasonic
- probe
- circuit
- water level
- level sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 239000000523 sample Substances 0.000 claims abstract description 96
- 238000001514 detection method Methods 0.000 claims abstract description 35
- 239000000565 sealant Substances 0.000 claims abstract description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000741 silica gel Substances 0.000 claims abstract description 6
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 6
- 230000003321 amplification Effects 0.000 claims description 12
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 12
- 230000005284 excitation Effects 0.000 claims description 10
- 239000012790 adhesive layer Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model provides a water level sensor for car as a house storage water tank, includes shell (2), circuit board (1), ultrasonic probe (4), pouring sealant (9), and ultrasonic probe (4) are including ultrasonic emission probe (41) and ultrasonic receiving probe (42), are covered respectively on two ultrasonic probes and are equipped with silica gel sheath (3), set up two ultrasonic probe mounting holes (31) on shell (2), and ultrasonic probe (4) inlay in ultrasonic probe mounting hole (31); the shell of the ultrasonic receiving probe (42) is connected with the negative electrode of the probe lead (7); after the components are installed, pouring sealant (9) is poured into the cavity of the shell (2). The sensor has good waterproof and fireproof performance and high air tightness; the capacitance detection function is added, and the problem that the data is inaccurate and unstable when the probe of the traditional ultrasonic water level sensor contacts the water surface is solved.
Description
Technical Field
The utility model relates to the technical field of ultrasonic water level detection, in particular to a water level sensor used on a water storage tank of a motor home.
Background
The caravan has two functions of both a house and a car, but the attribute of the caravan is the car. Literally, the "house" is responsible for the home, and the "car" is responsible for the movement, taken together being a moving home. In order to ensure that the motor home can normally use water anytime and anywhere, a water storage tank for storing water is usually arranged on the motor home. Meanwhile, a water level sensor is arranged in the water storage tank and used for monitoring the water level in the water storage tank in real time. There are floating ball type, electrode type and ultrasonic type water level sensors in general. The floating ball type water level sensor has low detection precision, and dirt is easy to generate due to the structural design, so that the assembly and the later maintenance are not facilitated; the electrode type water level sensor can generate electrolysis after long service time, and generated electrolytic substances are toxic and can influence human health.
The ultrasonic water level sensor is generally arranged at the top of the water tank, and the water level is calculated by measuring the water level, but the existing ultrasonic water level sensor has low waterproof and fireproof level, does not reach the standard of the vehicle standard, has low air tightness and is not suitable for working in the occasion of a sealed container such as a water storage tank of a motor home. In addition, the existing ultrasonic water level sensor can not effectively measure the water level in the dead zone, and if the water level rises to contact with the probe, the sound wave transmission can be influenced to cause measurement failure, so that the water level is too high, water overflows and other results are caused.
Disclosure of Invention
The utility model aims to provide a water level sensor for a water storage tank of a motor home, which solves the problems of inaccurate and unstable data caused by contact of a probe of the water level sensor with water.
The utility model can be realized by designing a water level sensor for a water storage tank of a motor home, which comprises a shell, a circuit main board, an ultrasonic probe and pouring sealant, wherein the ultrasonic probe comprises an ultrasonic transmitting probe and an ultrasonic receiving probe, silica gel sheaths are respectively covered on the two ultrasonic probes, two ultrasonic probe mounting holes are formed in the shell, and the ultrasonic probes are embedded in the ultrasonic probe mounting holes;
the circuit main board comprises a processor, an ESD protection circuit, a temperature detection circuit, a boost excitation pulse circuit, a signal amplification circuit, a detection circuit, a switching circuit and a capacitance detection circuit, wherein the ESD protection circuit is connected between a customer use port and the processor, the output end of the temperature detection circuit, the control end of the boost excitation circuit, the control end of the switching circuit, the output end of the signal amplification circuit, the output end of the detection circuit and the output end of the capacitance detection circuit are respectively connected with the processor, the control end of an ultrasonic emission probe is connected with the output end of the boost excitation pulse circuit, the output end of the switching circuit is connected with the input end of the signal amplification circuit, the output end of an ultrasonic receiving probe is connected with the input end of the switching circuit, the capacitance detection circuit is connected with the output end of the switching circuit, and one output end of the signal amplification circuit is connected with the input end of the detection circuit;
the shell of the ultrasonic receiving probe is connected with the negative electrode of the lead; after the components are installed, pouring sealant is poured into the cavity of the shell.
Further, an adhesive layer is provided on the front surface of the housing.
Further, a top stop structure is arranged in the ultrasonic probe mounting hole, and a threading hole for leading out a probe lead is formed in the top stop structure.
Further, the top stop structure extends towards the center inside the hole wall.
Further, the top stop structure is arranged at the end section of the ultrasonic probe mounting hole.
Further, a circle of mounting stop table is arranged on the front surface of the shell, and the mounting stop table encloses the ultrasonic probe mounting hole in the circle.
Further, the end face of the mounting stop is higher than the end face of the ultrasonic probe mounting hole.
Further, the shell is a fire-proof standard B1 class material shell.
Further, the ultrasonic probe is a closed metal shell ultrasonic probe.
Further, the housing is cylindrical.
The sensor has good waterproof and fireproof performance and high air tightness due to reasonable design; the capacitance detection function is added, and the problem that the data is inaccurate and unstable when the probe of the traditional ultrasonic water level sensor contacts the water surface is solved.
Drawings
FIG. 1 is a schematic diagram of a preferred embodiment of the present utility model;
FIG. 2 is a schematic view of another angle of the preferred embodiment of the present utility model;
FIG. 3 is a schematic view of another angle of the preferred embodiment of the present utility model;
FIG. 4 is a schematic cross-sectional view of a preferred embodiment of the present utility model;
FIG. 5 is an exploded view of a preferred embodiment of the present utility model;
FIG. 6 is a partial schematic view of a preferred embodiment of the present utility model;
fig. 7 is a schematic block diagram of a preferred embodiment of the present utility model.
Detailed Description
The utility model is further described below with reference to examples.
As shown in fig. 1 to 7, a water level sensor for a water tank of a motor home comprises a shell 2, a circuit board 1, an ultrasonic probe 4 and pouring sealant 9, wherein the ultrasonic probe 4 comprises an ultrasonic transmitting probe 41 and an ultrasonic receiving probe 42, a silica gel sheath 3 is respectively covered on the two ultrasonic probes, two ultrasonic probe mounting holes 31 are formed in the shell 2, and the ultrasonic probe 4 is embedded in the ultrasonic probe mounting holes 31.
As shown in fig. 7, the circuit board 1 includes a processor 10, an ESD protection circuit 11, a temperature detection circuit 12, a boost excitation pulse circuit 13, a signal amplification circuit 15, a detection circuit 14, a switching circuit 16, and a capacitance detection circuit 17, wherein the ESD protection circuit 11 is connected between a customer usage port 18 and the processor 10, an output end of the temperature detection circuit 12, a control end of the boost excitation circuit 13, a control end of the switching circuit 16, an output end of the signal amplification circuit 15, an output end of the detection circuit 14, and an output end of the capacitance detection circuit 17 are respectively connected to the processor 10, a control end of an ultrasonic wave transmitting probe 41 is connected to an output end of the boost excitation pulse circuit 13, an output end of the switching circuit 16 is connected to an input end of the signal amplification circuit 15, an output end of an ultrasonic wave receiving probe 42 is connected to an input end of the switching circuit 16, the capacitance detection circuit 17 is connected to an output end of the switching circuit 16, and an output end of the signal amplification circuit 15 is connected to an input end of the detection circuit 14;
the outer shell of the ultrasonic receiving probe 42 is connected with the negative electrode of the probe lead 7; after the components are installed, pouring sealant 9 is poured into the cavity of the shell 2, as shown in fig. 4. In this embodiment, the housing 2 has a cylindrical shape, and two ultrasonic probe mounting holes 31 are provided on the front surface of the housing.
As shown in fig. 1, 2 and 4, the front surface of the housing 2 is provided with an adhesive layer 5. The adhesive layer 5 in this embodiment is VHB double sided adhesive.
As shown in fig. 6, a stopper 34 is provided in the ultrasonic probe mounting hole 31, and the stopper 34 is provided with a threading hole 32 through which the probe lead 7 is led out. The ultrasonic probe is embedded into the probe mounting hole 31, the whole probe is propped up by the propping structure 34, the probe lead 7 is led out by the reserved threading hole 32, the propping structure 34 has the function of providing supporting force when the probe is extruded by the outside, and the air tightness of the sensor is improved.
As shown in fig. 6, the top stop structure 34 is formed extending centrally inside the bore wall.
As shown in fig. 6, the stopper 34 is provided at the end of the ultrasonic probe mounting hole 31.
As shown in fig. 5 and 6, a ring of mounting blocks 21 is provided on the front surface of the housing 2, and the mounting blocks 21 enclose the ultrasonic probe mounting holes 31. The mounting stop 21 improves the sealing effect when the whole machine is mounted. As shown in fig. 6, the end surface of the mounting stopper 21 is higher than the end surface of the ultrasonic probe mounting hole 31.
As shown in fig. 4 and 5, two silica gel sheaths 3 are respectively covered on two ultrasonic probes 4, then are respectively embedded into probe mounting holes 31 of the sensor housing 2, probe leads 7 pass through the silica gel sheaths 3 and the mounting holes 31 and are welded on the circuit board 1, the circuit board 1 is fixed at corresponding positions in the cavity of the housing 2 through screws 6, and finally, the adhesive layer 5 is stuck on the front surface of the housing 2.
As shown in fig. 3 and 4, after two ultrasonic probes 4 are embedded into a probe mounting hole 31 of a sensor housing 2, filling a proper amount of pouring sealant 9 in the probe mounting hole, adhering the pouring sealant 9 with the housing 2 after curing, and simultaneously sealing a threading hole 32 penetrating through a probe lead 7, wherein the housing 2 and the two ultrasonic probes 4 are integrated at the moment, and then welding the lead of the probe and a fixed circuit main board 1; after the circuit main board 1 is fixed, pouring sealant 9 on the circuit board; the pouring sealant 9 is used for guaranteeing the overall excellent waterproof performance of the sensor.
The shell 2 is made of a fireproof standard B1 class material and has a good fireproof grade.
The ultrasonic probe 4 is a closed metal-case ultrasonic probe.
The working principle of the utility model is as follows: as shown in fig. 7, the circuit board 1 includes a processor 10, an ESD protection circuit 11, a temperature detection circuit 12, a boost excitation pulse circuit 13, a signal amplification circuit 15, a detection circuit 14, a switching circuit 16, a capacitance detection circuit 17, and an ultrasonic transmission probe 41 and an ultrasonic reception probe 42 are connected to the circuit board 1. The ESD protection circuit 11 protects the processor 10, preventing electrostatic injection into the processor 10; the temperature detection circuit 12 completes the collection of the external temperature; the switching circuit 16 is controlled by the processor 10 to control the receiving probe 42 to be connected to the signal amplifying circuit 15 or the capacitance detecting circuit 17, and the sensor works in the ultrasonic ranging function when being connected to the signal amplifying circuit 15, and the ultrasonic ranging is the prior art and is not further described herein; the sensor works in the capacitance detection function when being connected to the capacitance detection circuit 17, and as the receiving probe shell is connected with the negative electrode of the lead wire, the receiving probe shell is utilized to serve as a capacitance sensing panel, when the capacitance value of the probe is increased when water is contacted with the water, the sensor probe is judged to be soaked by the water, the capacitance detection is firstly carried out by alternately switching the two functions, if the probe is not contacted with the water surface, the ultrasonic ranging output distance value is carried out, and if the probe is contacted with the water surface, the water full signal is directly output.
The sensor has good waterproof and fireproof performance and high air tightness; the capacitance detection function is added, and the problem that the data is inaccurate and unstable when the probe of the traditional ultrasonic water level sensor contacts the water surface is solved.
Claims (10)
1. A water level sensor for car as a house storage water tank, its characterized in that: the ultrasonic probe comprises a shell (2), a circuit main board (1), an ultrasonic probe (4) and pouring sealant (9), wherein the ultrasonic probe (4) comprises an ultrasonic transmitting probe (41) and an ultrasonic receiving probe (42), a silica gel sheath (3) is respectively covered on the two ultrasonic probes, two ultrasonic probe mounting holes (31) are formed in the shell (2), and the ultrasonic probe (4) is embedded in the ultrasonic probe mounting holes (31);
the circuit main board (1) comprises a processor (10), an ESD protection circuit (11), a temperature detection circuit (12), a boost excitation pulse circuit (13), a signal amplification circuit (15), a detection circuit (14), a switching circuit (16) and a capacitance detection circuit (17), wherein the ESD protection circuit (11) is connected between a client use port (18) and the processor (10), the output end of the temperature detection circuit (12), the control end of the boost excitation pulse circuit (13), the control end of the switching circuit (16), the output end of the signal amplification circuit (15), the output end of the detection circuit (14) and the output end of the capacitance detection circuit (17) are respectively connected with the processor (10), the control end of the ultrasonic wave transmitting probe (41) is connected with the output end of the boost excitation pulse circuit (13), the output end of the switching circuit (16) is connected with the input end of the signal amplification circuit (15), the output end of the ultrasonic wave receiving probe (42) is connected with the input end of the switching circuit (16), and the capacitance detection circuit (17) is connected with the output end of the switching circuit (16);
the shell of the ultrasonic receiving probe (42) is connected with the negative electrode of the probe lead (7); after the components are installed, pouring sealant (9) is poured into the cavity of the shell (2).
2. The water level sensor for a recreational vehicle storage tank of claim 1, wherein: the front surface of the shell (2) is provided with an adhesive layer (5).
3. The water level sensor for a recreational vehicle storage tank of claim 1, wherein: a top stop structure (34) is arranged in the ultrasonic probe mounting hole (31), and the top stop structure (34) is provided with a threading hole (32) for leading out the probe lead (7).
4. A water level sensor for a recreational vehicle storage tank as defined in claim 3, wherein: the top stop structure (34) extends towards the center inside the hole wall.
5. A water level sensor for a recreational vehicle storage tank as defined in claim 3, wherein: the top stop structure (34) is arranged at the tail section of the ultrasonic probe mounting hole (31).
6. The water level sensor for a recreational vehicle storage tank of claim 1, wherein: a circle of mounting stop table (21) is arranged on the front surface of the shell (2), and the ultrasonic probe mounting hole (31) is enclosed in the circle by the mounting stop table (21).
7. The water level sensor for a recreational vehicle storage tank of claim 6, wherein: the end face of the mounting stop (21) is higher than the end face of the ultrasonic probe mounting hole (31).
8. The water level sensor for a recreational vehicle storage tank of claim 1, wherein: the shell (2) is made of fire-proof standard B1 class material.
9. The water level sensor for a recreational vehicle storage tank of claim 1, wherein: the ultrasonic probe (4) is a closed metal shell ultrasonic probe.
10. The water level sensor for a recreational vehicle storage tank of claim 1, wherein: the shell (2) is cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321054408.8U CN219935057U (en) | 2023-05-05 | 2023-05-05 | Water level sensor for water storage tank of motor home |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321054408.8U CN219935057U (en) | 2023-05-05 | 2023-05-05 | Water level sensor for water storage tank of motor home |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219935057U true CN219935057U (en) | 2023-10-31 |
Family
ID=88496283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321054408.8U Active CN219935057U (en) | 2023-05-05 | 2023-05-05 | Water level sensor for water storage tank of motor home |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219935057U (en) |
-
2023
- 2023-05-05 CN CN202321054408.8U patent/CN219935057U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN219935057U (en) | Water level sensor for water storage tank of motor home | |
| CN205607488U (en) | Liquid level monitoring device | |
| CN108759976A (en) | A kind of water level sensor | |
| CN214533163U (en) | Urea liquid level quality sensor | |
| CN202041258U (en) | Closed double-probe ultrasonic water level sensor | |
| CN108361022A (en) | Connector for logging while drilling shell and connector for logging while drilling | |
| CN210346975U (en) | Pressure transmitter | |
| CN217276378U (en) | Water level sensor convenient to installation | |
| CN210802700U (en) | Close range warning module based on pyroelectric sensor | |
| CN211121495U (en) | Oil level meter and fuel sensor testing device | |
| CN2869801Y (en) | Liquid-level measuring instrument | |
| CN111795733A (en) | Evaporation sensor | |
| CN2417464Y (en) | Liquid level detecting device | |
| CN221506792U (en) | Ultrasonic probe assembly for measuring urea concentration and temperature | |
| CN212708933U (en) | Fuel oil metering system | |
| CN211978142U (en) | Accurate temperature-detecting device of current transmission type | |
| CN205192559U (en) | Control box of electron teletransmission valve accuse water gauge | |
| CN208312744U (en) | A kind of water level sensor applied to solar water container | |
| CN208043816U (en) | A kind of sensor measured for water inlet rate in geologic prospect | |
| CN219200357U (en) | Early warning type digital gate opening instrument | |
| CN217870717U (en) | Intelligent municipal afforestation is with water intaking system | |
| CN219675145U (en) | Front electrode integrated device of strain gauge | |
| CN218158363U (en) | Alarm device with multiple sensing interfaces and capable of detecting water leakage and liquid level simultaneously | |
| CN219869911U (en) | Reed pipe liquid level sensor with float with protective cover | |
| CN220853776U (en) | Flexible capacitive oil level sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |