CN216348968U - Water level detection device - Google Patents
Water level detection device Download PDFInfo
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- CN216348968U CN216348968U CN202122659737.2U CN202122659737U CN216348968U CN 216348968 U CN216348968 U CN 216348968U CN 202122659737 U CN202122659737 U CN 202122659737U CN 216348968 U CN216348968 U CN 216348968U
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Abstract
The utility model discloses a water level detection device, which comprises a signal transmitting module, at least one water level detection module and a control module, wherein the signal transmitting module is used for transmitting a signal to the control module; the control module is connected with the signal generation module to control the signal generation module to transmit a voltage signal; the water level detection module comprises a water level detection piece and a voltage conversion unit, and the water level detection piece is connected with the control module through the voltage conversion unit so as to send a detected voltage signal to the control module. The utility model adopts a voltage detection mode, is not influenced by the water quality and the water pressure, the magnetic field, the region and the temperature change.
Description
Technical Field
The utility model relates to the field of water level detection, in particular to a water level detection device.
Background
Many devices with water tanks need to detect water level, and dry reed type water level detection devices, hydraulic water level detection devices and current water level detection devices are mostly adopted at present;
one important indicator of purified water is Total Dissolved Solids (TDS), which is the water quality we generally say, and is typically tested with a TDS water quality test pen. The smaller the TDS value is, the better the water purity is, the better the water quality is, but the smaller the corresponding conductivity is, the larger the resistance value is, and the detection failure can be caused by the small and unstable signals of the common current water level detection device;
if the purified water is heated to 100 ℃, air pressure influence and bubble boiling phenomenon exist when the water is heated, a metal container is also adopted for a corresponding shell, and if different regional influences are added, detection abnormity occurs in the reed pipe type water level detection device and the hydraulic water level detection device;
namely, the existing detection scheme, the dry reed type water level detection device, is easily influenced by the temperature during heating, is easily interfered by an electromagnetic field and ferrous metal and cannot be normally detected; the hydraulic water level detection device has insufficient sensitivity, is easily influenced by temperature during heating and is easily influenced by regional environment; the current type water level detection circuit is easily affected by the water quality purity and cannot normally detect the water level.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, the utility model provides a water level detection device which adopts a voltage detection mode, is not influenced by the water quality and the water pressure, the magnetic field, the region and the temperature.
In order to achieve the purpose, the utility model is realized by adopting the following technical scheme:
a water level detection device comprises a signal transmitting module, at least one water level detection module and a control module; the control module is connected with the signal generation module to control the signal generation module to transmit a voltage signal; the water level detection module comprises a water level detection piece and a voltage conversion unit, and the water level detection piece is connected with the control module through the voltage conversion unit so as to send a detected voltage signal to the control module.
Specifically, the signal transmitting module transmits a voltage signal with a certain frequency, i.e., a voltage pulse signal.
When the water level detection device is used, the signal emitting module and the water level detection piece of the water level detection module are arranged in the water storage container, and the signal emitting module can be contacted with water in the water storage container no matter how the water level in the water storage container changes; the control module controls the signal transmitting module to transmit a voltage signal with a certain frequency, namely a pulse signal, and the voltage signal can radiate signals in water because the signal transmitting module is positioned in the water of the water storage container;
if the detection area of the water level detection piece is immersed in water, the water level detection piece can detect the voltage signal and send the voltage signal to the control module through the voltage conversion unit, and the control module can identify and process the voltage signal after receiving the voltage signal to obtain the position of the water level in the water storage container, which is higher than the detection area of the water level detection piece;
if the detection area of the water level detection piece is not immersed in water, the water level detection piece cannot detect the voltage signal, and the control module does not receive the voltage signal of the water level detection piece and then processes the voltage signal to obtain the position where the water level in the water storage container is lower than the detection area of the water level detection piece.
By adopting the structure, the water level in the water storage container is detected through voltage detection, and the water level detection device is not influenced by water quality and water pressure, a magnetic field, regions and temperature changes, so that the reliability is high and the application range is wide;
the number of the water level detection modules depends on the actual use requirement of a user.
Further, the voltage conversion unit comprises an MOS tube.
By adopting the structure, the MOS tube is a pressure-sensitive sensing device and is not influenced by the water quality.
Furthermore, probes are adopted for the water level detection parts in the signal emission module and the water level detection module; the end part of the probe adopted by the signal generation module is formed into an output end for outputting a voltage signal, and the end part of the probe adopted by the water level detection piece is formed into a detection area for detecting the voltage signal; and the end part of the probe adopted by the signal generation module is closer to the bottom surface of the water outlet container than the end part of the probe adopted by the water level detection piece.
By adopting the structure, when the water level changes, the output end of the signal generation module is immersed in the water to radiate a voltage signal sent by the signal generation module under the condition that the detection area of the water level detection piece is immersed in the water;
specifically, the length of the probe adopted by the signal generation module is longer than that of the probe adopted by the water level detection piece.
Further, in some embodiments, the water level detection apparatus includes three water level detection modules and is respectively formed as a low water level detection module, a middle water level detection module, and a high water level detection module; the voltage conversion unit in the corresponding low water level detection module, the voltage conversion unit in the middle water level detection module and the voltage conversion unit in the high water level detection module are respectively connected with a low water level IO end, a middle water level IO end and a high water level IO end of the control module;
along the height direction of a water storage container for storing water, the position of a detection area of a water level detection piece in the low water level detection module is lower than the position of a detection area of a water level detection piece in the middle water level detection module; the position of the detection area of the water level detection piece in the middle water level detection module is lower than the position of the detection area of the water level detection piece in the high water level detection module.
By adopting the structure, if the high water level detection device detects the voltage signal radiated in water by the signal emission module, the water level in the water storage container is higher than the position of the detection area of the water level detection piece in the high water level detection device;
if the high water level detection device does not detect the voltage signal emitted by the signal emission module and the medium water level detection device detects the voltage signal radiated by the signal emission module in water, the water level in the water storage container is positioned between the position of the detection area of the water level detection piece in the high water level detection device and the position of the detection area of the water level detection piece in the medium water level detection device;
if the middle water level detection device does not detect the voltage signal emitted by the signal emission module and the low water level detection device detects the voltage signal radiated by the signal emission module in water, the water level in the water storage container is positioned between the position of the detection area of the water level detection piece in the middle water level detection device and the position of the detection area of the water level detection piece in the low water level detection device;
if the low water level detection device does not detect the voltage signal transmitted by the signal transmitting module, the water level in the water storage container is lower than the position of a detection area of a water level detection piece in the low water level detection device;
specifically, the length of the probe used by the water level detecting member in the high water level detecting device is shorter than the length of the probe used by the water level detecting member in the medium water level detecting device, and the length of the probe used by the water level detecting member in the medium water level detecting device is shorter than the length of the probe used by the water level detecting member in the low water level detecting device.
Furthermore, the MOS tube adopts a P-channel enhanced MOS field effect tube;
the source electrode of the MOS tube is connected with VCC, the grid electrode of the MOS tube is connected with the water level detection piece, the drain electrode of the MOS tube is respectively connected with the control module and one end of a first resistor, and the other end of the first resistor is grounded; one end of the second resistor is connected with the source electrode of the MOS tube, and the other end of the second resistor is connected with the grid electrode of the MOS tube; VCC is + 5V.
By adopting the structure, the MOS tube is in an amplification working state, and when the water level detection device works normally, the MOS tube can amplify the voltage signal detected by the water level detection piece so as to facilitate accurate identification of the control module.
When the water level detection device is used, the resistance value of the second resistor can be adjusted according to different water quality conditions so as to adjust the sensitivity and the detection degree of the water level detection device.
Furthermore, one end of the water level detection part connected with the voltage conversion unit is connected with one end of a first bidirectional TVS tube, and the other end of the first bidirectional TVS tube is grounded.
By adopting the structure, the arrangement of the first bidirectional TVS tube plays a role in protecting the circuit, and the service life of the circuit is prolonged.
Furthermore, the water level detection piece is connected with the voltage conversion unit through a first filtering unit, and the voltage conversion unit is connected with the control module through a second filtering unit.
By adopting the structure, the first filtering unit and the second filtering unit can carry out crosstalk filtering treatment on static electricity or other strong electricity, can filter interference signals while protecting devices, ensures stable and normal operation of a circuit, and prolongs the service life of the circuit.
Furthermore, the first filtering unit comprises a first filtering resistor and a first filtering capacitor, the water level detection part is connected with one end of the first filtering resistor, the other end of the first filtering resistor is connected with the voltage conversion unit, one end of the first filtering resistor connected with the voltage conversion unit is connected with one end of the first filtering capacitor, and the other end of the first filtering capacitor is grounded;
the second filtering unit comprises a second filtering resistor and a second filtering capacitor, the voltage conversion unit is connected with one end of the second filtering resistor, the other end of the second filtering resistor is connected with the control module, one end of the second filtering resistor, which is connected with the control module, is connected with one end of the second filtering capacitor, and the other end of the first filtering capacitor is grounded.
Specifically, one end of the water level detection element connected with the first filter resistor is connected with the first bidirectional TVS tube.
Furthermore, the control module is connected with the signal transmitting module through a third resistor, one end of the third resistor connected with the signal transmitting module is connected with one end of a second bidirectional TVS tube, and the other end of the second bidirectional TVS tube is grounded.
By adopting the structure, the third resistor and the second bidirectional TVS tube are arranged to protect the circuit, and the service life of the circuit is prolonged.
Further, the water level detection device comprises a water temperature detection module, and the control module is connected with the water temperature detection module to receive water temperature data detected by the water temperature detection module.
By adopting the structure, the water level detection device can also detect the temperature of water in the water storage container, so that the practicability of the product is improved; the detection area of the water temperature detection module is arranged close to the bottom surface of the water storage container to prevent the water level from being too low to enable the water level to be incapable of being in contact with water for detection.
Specifically, the water temperature detection module comprises a water temperature detection piece provided with a detection area, the water temperature detection piece is connected with the control module through a third filtering unit, one end of the water temperature detection piece connected with the third filtering unit is connected with one end of a fourth resistor, and the other end of the fourth resistor is connected with VCC (voltage converter), namely + 5V; the third filter power supply comprises a third filter resistor and a third filter capacitor, one end of the third filter resistor is connected with the water temperature detection piece, the other end of the third filter resistor is connected with the control module, one end of the third filter resistor, which is connected with the control module, is connected with one end of the third filter capacitor, and the other end of the third filter capacitor is grounded.
Further, the water level detection device comprises a display module, and the display module is connected with the control module to display the water level condition.
By adopting the structure, a user can read the water level condition in the water storage container conveniently; the display module can also display the water temperature condition so as to be convenient for reading the water temperature condition in the water storage container.
Furthermore, the water level detection device comprises a connecting piece, the signal transmitting module is connected with the control module through the connecting piece, the water level detection piece is connected with the voltage conversion unit through the connecting piece, and the water temperature detection piece is connected with the third filtering unit through the connecting piece.
Compared with the prior art, the utility model has the following beneficial effects:
(1) the water level detection device adopts a voltage detection mode, is not influenced by water quality and is not influenced by water pressure, a magnetic field, regions and temperature changes.
(2) The water level detection device is simple in structure, low in cost and convenient to produce and popularize.
Drawings
FIG. 1 is a block diagram illustrating the structure of a water level detecting device according to the present invention;
FIG. 2 shows a signal emitting module and a water level detecting member of the water level detecting device according to the present invention.
The structure schematic diagram of the water temperature detection piece;
FIG. 3 is a schematic structural view of a low water level detecting module (water level detecting module) in the water level detecting apparatus according to the present invention;
FIG. 4 is a schematic structural view of a water level detecting module (water level detecting module) in the water level detecting apparatus according to the present invention;
FIG. 5 is a schematic structural view of a high water level detecting module (water level detecting module) in the water level detecting apparatus according to the present invention;
FIG. 6 is a schematic structural diagram of a water temperature detecting module in the water level detecting apparatus according to the present invention;
FIG. 7 is a schematic diagram of a circuit structure at a connection part in the water level detecting apparatus according to the present invention;
reference numerals: 1, a signal transmitting module; 2, a water level detection module; 201 a low water level detection module; 202 middle water level detection module; 203 high water level detection module; 204 water level detecting element; 205 a voltage conversion unit; 2051MOS tube; 2052 a first resistor; 2053 a second resistor; 206 a first bidirectional TVS tube; 207 a first filtering unit; 2071 a first filter resistor; 2072 a first filter capacitor; 208 a second filtering unit; 2081 a second filter resistor; 2082 a second filter capacitor; 3, a control module; 4 a third resistor; 5 a second bidirectional TVS tube; 6, a water temperature detection module; 601 a water temperature detection piece; 602 a third filtering unit; 6021 a third filter resistance; 6022 a third filter capacitor; 603 a fourth resistor; 7 a display module; 8 connecting pieces.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.
As shown in fig. 1 to 7, a water level detecting apparatus includes a signal transmitting module 1, at least one water level detecting module 2, and a control module 3; the control module 3 is connected with the signal generation module to control the signal generation module to transmit a voltage signal; the water level detection module 2 includes a water level detection member 204 and a voltage conversion unit 205, and the water level detection member 204 is connected to the control module 3 through the voltage conversion unit 205 to transmit a detected voltage signal to the control module 3.
Specifically, the signal transmitting module 1 transmits a voltage signal with a certain frequency, i.e., a voltage pulse signal.
When in use, the signal transmitting module 1 and the water level detection piece 204 of the water level detection module 2 are arranged in a water storage container, and the signal transmitting module 1 is ensured to be contacted with water in the water storage container no matter how the water level in the water storage container changes; the control module 3 controls the signal transmitting module 1 to transmit a voltage signal with a certain frequency, namely a pulse signal, and the voltage signal can radiate signals in water because the signal transmitting module 1 is positioned in the water of the water storage container;
if the detection area of the water level detection piece 204 is immersed in water, the water level detection piece 204 will detect the voltage signal and send the voltage signal to the control module 3 through the voltage conversion unit 205, and the control module 3 will recognize and process the voltage signal after receiving the voltage signal to obtain the position where the water level in the water storage container is higher than the detection area of the water level detection piece 204;
if the detection area of the water level detection element 204 is not immersed in water, the water level detection element 204 cannot detect the voltage signal, and the control module 3 does not receive the voltage signal of the water level detection element 204, and then the control module 3 processes the voltage signal to obtain the position where the water level in the water storage container is lower than the detection area of the water level detection element 204.
By adopting the structure, the water level in the water storage container is detected through voltage detection, and the water level detection device is not influenced by water quality and water pressure, a magnetic field, regions and temperature changes, so that the reliability is high and the application range is wide;
the number of the water level detection modules 2 depends on the actual use requirement of the user.
Preferably, the voltage conversion unit 205 includes a MOS transistor 2051.
With the above structure, the MOS transistor 2051 is a pressure-sensitive sensor and is not affected by the size of water.
Preferably, the water level detecting elements 204 in the signal transmitting module 1 and the water level detecting module 2 both adopt probes; the end of the probe adopted by the signal generation module is an output end for outputting a voltage signal, and the end of the probe adopted by the water level detection piece 204 is a detection area for detecting the voltage signal; and the end of the probe adopted by the signal generation module is closer to the bottom surface of the water outlet container than the end of the probe adopted by the water level detection piece 204.
By adopting the structure, when the water level changes, the output end of the signal generation module is immersed in the water to radiate a voltage signal sent by the signal generation module under the condition that the detection area of the water level detection piece 204 is immersed in the water;
specifically, the length of the probe used by the signal generating module is longer than the length of the probe used by the water level detecting member 204.
Preferably, in some embodiments, the water level detection apparatus includes three water level detection modules 2 and is respectively formed as a low water level detection module 201, a middle water level detection module 202, and a high water level detection module 203; the voltage conversion unit 205 in the low water level detection module 201, the voltage conversion unit 205 in the middle water level detection module 202, and the voltage conversion unit 205 in the high water level detection module 203 are connected to the low water level IO terminal, the middle water level IO terminal, and the high water level IO terminal of the control module 3, respectively;
along the height direction of the water storage container for storing water, the position of the detection area of the water level detection piece 204 in the low water level detection module 201 is lower than the position of the detection area of the water level detection piece 204 in the medium water level detection module 202; the position of the detection area of the water level detection element 204 in the middle water level detection module 202 is lower than the position of the detection area of the water level detection element 204 in the high water level detection module 203.
With the above structure, if the high water level detection device detects the voltage signal radiated in water by the signal emission module 1, the water level in the water storage container is higher than the position of the detection area of the water level detection piece 204 in the high water level detection device;
if the high water level detection device does not detect the voltage signal emitted by the signal emitting module 1 and the middle water level detection device detects the voltage signal radiated by the signal emitting module 1 in water, the water level in the water storage container is located between the position of the detection area of the water level detection piece 204 in the high water level detection device and the position of the detection area of the water level detection piece 204 in the middle water level detection device;
if the middle water level detection device does not detect the voltage signal emitted by the signal emitting module 1 and the low water level detection device detects the voltage signal radiated by the signal emitting module 1 in water, the water level in the water storage container is located between the position of the detection area of the middle water level detection device middle water level detection piece 204 and the position of the detection area of the low water level detection device middle water level detection piece 204;
if the low water level detection device does not detect the voltage signal transmitted by the signal transmitting module 1, the water level in the water storage container is lower than the position of the detection area of the water level detection piece 204 in the low water level detection device;
specifically, the length of the probe used by the water level detecting element 204 in the high water level detecting device is shorter than the length of the probe used by the water level detecting element 204 in the medium water level detecting device, and the length of the probe used by the water level detecting element 204 in the medium water level detecting device is shorter than the length of the probe used by the water level detecting element 204 in the low water level detecting device.
Preferably, the MOS transistor 2051 is a P-channel enhancement type MOS field effect transistor;
the source electrode of the MOS tube 2051 is connected to VCC, the gate electrode is connected to the water level detector 204, the drain electrode is connected to the control module 3 and one end of the first resistor 2052, respectively, and the other end of the first resistor 2052 is grounded; one end of the second resistor 2053 is connected with the source electrode of the MOS transistor 2051, and the other end is connected with the gate electrode of the MOS transistor 2051; VCC is + 5V.
By adopting the structure, the MOS tube 2051 is in an amplification working state, and when the water level detection device works normally, the MOS tube 2051 can amplify a voltage signal detected by the water level detection piece 204 so that the control module 3 can accurately identify the voltage signal.
When the water level detection device is used, the resistance value of the second resistor 2053 can be adjusted according to different water quality conditions so as to adjust the sensitivity and the detection degree of the water level detection device.
Preferably, one end of the water level detector 204 connected to the voltage conversion unit 205 is connected to one end of a first bidirectional TVS tube 206, and the other end of the first bidirectional TVS tube 206 is grounded.
With the structure, the first bidirectional TVS tube 206 protects the circuit and prolongs the service life of the circuit.
Preferably, the water level detector 204 is connected to the voltage conversion unit 205 through a first filter unit 207, and the voltage conversion unit 205 is connected to the control module 3 through a second filter unit 208.
By adopting the structure, the first filtering unit 207 and the second filtering unit 208 can perform crosstalk filtering processing on static electricity or other strong electricity, protect devices and filter interference signals, ensure stable and normal operation of a circuit and prolong the service life of the circuit.
Preferably, the first filtering unit 207 includes a first filtering resistor 2071 and a first filtering capacitor 2072, the water level detecting element 204 is connected to one end of the first filtering resistor 2071, the other end of the first filtering resistor 2071 is connected to the voltage converting unit 205, one end of the first filtering resistor 2071 connected to the voltage converting unit 205 is connected to one end of the first filtering capacitor 2072, and the other end of the first filtering capacitor 2072 is grounded;
the second filtering unit 208 includes a second filtering resistor 2081 and a second filtering capacitor 2082, the voltage conversion unit 205 is connected to one end of the second filtering resistor 2081, the other end of the second filtering resistor 2081 is connected to the control module 3, one end of the second filtering resistor 2081 connected to the control module 3 is connected to one end of the second filtering capacitor 2082, and the other end of the second filtering capacitor 2082 is grounded.
Specifically, one end of the water level detector 204 connected to the first filter resistor 2071 is connected to the first bidirectional TVS tube 206.
Preferably, the control module 3 is connected to the signal transmitting module 1 through a third resistor 4, one end of the third resistor 4 connected to the signal transmitting module 1 is connected to one end of a second bidirectional TVS tube 5, and the other end of the second bidirectional TVS tube 5 is grounded.
By adopting the structure, the third resistor 4 and the second bidirectional TVS tube 5 are arranged to protect the circuit, and the service life of the circuit is prolonged.
Preferably, the water level detection device comprises a water temperature detection module 6, and the control module 3 is connected with the water temperature detection module 6 to receive water temperature data detected by the water temperature detection module 6.
By adopting the structure, the water level detection device can also detect the temperature of water in the water storage container, so that the practicability of the product is improved; the detection area of the water temperature detection module 6 is arranged close to the bottom surface of the water storage container to prevent the water level from being too low to enable the water level to be incapable of being in contact with water for detection.
Specifically, the water temperature detection module 6 includes a water temperature detection piece 601 provided with a detection area, the water temperature detection piece 601 is connected with the control module 3 through a third filtering unit 602, one end of the water temperature detection piece 601 connected with the third filtering unit 602 is connected with one end of a fourth resistor 603, and the other end of the fourth resistor 603 is connected with VCC, i.e., + 5V; the third filtering unit 602 includes a third filtering resistor 6021 and a third filtering capacitor 6022, one end of the third filtering resistor 6021 is connected to the water temperature detecting member 601, the other end is connected to the control module 3, one end of the third filtering resistor 6021 connected to the control module 3 is connected to one end of the third filtering capacitor 6022, and the other end of the third filtering capacitor 6022 is grounded.
Preferably, the water level detection device comprises a display module 7, and the display module 7 is connected with the control module 3 to display the water level condition.
By adopting the structure, a user can read the water level condition in the water storage container conveniently; the display module 7 can also display the water temperature condition so as to be convenient for reading the water temperature condition in the water storage container.
Preferably, the water level detecting device includes a connecting member 8, the signal transmitting module 1 is connected to the control module 3 through the connecting member 8, the water level detecting member 204 is connected to the voltage converting unit 205 through the connecting member 8, and the water temperature detecting member 601 is connected to the third filtering unit 602 through the connecting member 8.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A water level detection device is characterized in that: comprises a signal transmitting module (1), at least one water level detecting module (2) and a control module (3); the control module (3) is connected with the signal generation module to control the signal generation module to transmit a voltage signal; the water level detection module (2) comprises a water level detection piece (204) and a voltage conversion unit (205), wherein the water level detection piece (204) is connected with the control module (3) through the voltage conversion unit (205) to send a detected voltage signal to the control module (3).
2. The water level detecting apparatus according to claim 1, wherein: the voltage conversion unit (205) comprises an MOS tube (2051).
3. The water level detecting apparatus according to claim 1, wherein: probes are adopted for the water level detection pieces (204) in the signal emission module (1) and the water level detection module (2); the end part of a probe adopted by the signal generation module is an output end for outputting a voltage signal, and the end part of the probe adopted by the water level detection piece (204) is a detection area for detecting the voltage signal; and the end part of the probe adopted by the signal generation module is closer to the bottom surface of the water outlet container than the end part of the probe adopted by the water level detection piece (204).
4. The water level detecting apparatus according to claim 1, wherein: the water level detection device comprises three water level detection modules (2) which are respectively formed into a low water level detection module (201), a middle water level detection module (202) and a high water level detection module (203);
along the height direction of a water storage container for storing water, the position of a detection area of a water level detection piece (204) in the low water level detection module (201) is lower than the position of the detection area of the water level detection piece (204) in the middle water level detection module (202); the position of a detection area of a water level detection piece (204) in the middle water level detection module (202) is lower than the position of a detection area of a water level detection piece (204) in the high water level detection module (203).
5. The water level detecting apparatus according to claim 2, wherein: the MOS tube (2051) adopts a P-channel enhanced MOS field effect tube;
the source electrode of the MOS tube (2051) is connected with VCC, the grid electrode of the MOS tube is connected with the water level detection piece (204), the drain electrode of the MOS tube is respectively connected with the control module (3) and one end of a first resistor (2052), and the other end of the first resistor (2052) is grounded; one end of the second resistor (2053) is connected with the source electrode of the MOS tube (2051), and the other end of the second resistor is connected with the grid electrode of the MOS tube (2051).
6. The water level detecting apparatus according to claim 1, wherein: one end of the water level detection piece (204) connected with the voltage conversion unit (205) is connected with one end of a first bidirectional TVS tube (206), and the other end of the first bidirectional TVS tube (206) is grounded.
7. The water level detecting apparatus according to claim 1, wherein: the water level detection piece (204) is connected with the voltage conversion unit (205) through a first filtering unit (207), and the voltage conversion unit (205) is connected with the control module (3) through a second filtering unit (208).
8. The water level detecting apparatus according to claim 7, wherein: the first filtering unit (207) comprises a first filtering resistor (2071) and a first filtering capacitor (2072), the water level detection piece (204) is connected with one end of the first filtering resistor (2071), the other end of the first filtering resistor (2071) is connected with the voltage conversion unit (205), one end of the first filtering resistor (2071) connected with the voltage conversion unit (205) is connected with one end of the first filtering capacitor (2072), and the other end of the first filtering capacitor (2072) is grounded;
the second filtering unit (208) comprises a second filtering resistor (2081) and a second filtering capacitor (2082), the voltage conversion unit (205) is connected with one end of the second filtering resistor (2081), the other end of the second filtering resistor (2081) is connected with the control module (3), one end of the second filtering resistor (2081) connected with the control module (3) is connected with one end of the second filtering capacitor (2082), and the other end of the second filtering capacitor (2082) is grounded.
9. The water level detecting apparatus according to claim 1, wherein: the control module (3) through third resistance (4) with signal transmission module (1) is connected, third resistance (4) with the one end that signal transmission module (1) is connected with the one end of two-way TVS pipe (5) of second, the other end ground connection of two-way TVS pipe (5) of second.
10. The water level detecting apparatus according to claim 1, wherein: comprises a water temperature detection module (6), the control module (3) is connected with the water temperature detection module (6) to receive water temperature data detected by the water temperature detection module (6),
the water level detection device comprises a display module (7), and the display module (7) is connected with the control module (3) to display the water level condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122659737.2U CN216348968U (en) | 2021-11-02 | 2021-11-02 | Water level detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122659737.2U CN216348968U (en) | 2021-11-02 | 2021-11-02 | Water level detection device |
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|---|---|
| CN216348968U true CN216348968U (en) | 2022-04-19 |
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| CN202122659737.2U Active CN216348968U (en) | 2021-11-02 | 2021-11-02 | Water level detection device |
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2021
- 2021-11-02 CN CN202122659737.2U patent/CN216348968U/en active Active
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