CN213067824U - Humidifier water tank liquid level detection module based on wireless power supply - Google Patents
Humidifier water tank liquid level detection module based on wireless power supply Download PDFInfo
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- CN213067824U CN213067824U CN202022307369.0U CN202022307369U CN213067824U CN 213067824 U CN213067824 U CN 213067824U CN 202022307369 U CN202022307369 U CN 202022307369U CN 213067824 U CN213067824 U CN 213067824U
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Abstract
The utility model discloses a wireless power supply based humidifier water tank liquid level detection module, which comprises a shell, wherein a liquid level detection device is arranged on the shell, is used for being installed on the side wall of a water tank by the shell and is used for detecting the liquid level height in the water tank by the liquid level detection device, a wireless transmitting end is arranged above the liquid level detection device, and a wireless receiving end corresponding to the wireless transmitting end is arranged above the shell; the wireless receiving end is communicated with the wireless transmitting end through an electromagnetic coil; the wireless humidifier is used for electric energy transmission and signal transmission between a wireless receiving end and a wireless transmitting end, and is expected to solve the problem that a power supply module of the existing humidifier needs to stretch into a water tank through a wire to be connected with a capacitive liquid level sensor, so that certain electric leakage risk possibly exists.
Description
Technical Field
The utility model relates to a humidifier structure, concretely relates to humidifier water tank liquid level detection module based on wireless power supply.
Background
The liquid level sensor or the floating ball is generally adopted in the common water tank to collect liquid level information, and for the humidifier, the design of the floating ball valve is not beneficial to gas flow and humidification, so that the design is not considered generally, and therefore the liquid level sensor, such as a capacitive liquid level sensor, is generally adopted in the form of measuring the liquid level in the common humidifier. The capacitive liquid level sensor and the associated display element are integrated to form a liquid level detection module, which is generally mounted in the tank via a housing.
Present capacitanc level sensor needs the switch on at the during operation, its capacitanc level sensor is connected with the power cord through leading electrical pillar, at the in-service use in-process, capacitanc level sensor is arranged in the liquid level, the level sensor of this mode easily receives liquid erosion, thereby there is the electric leakage risk, because humidifier itself can produce a large amount of moisture, consequently capacitanc level sensor directly is connected with the power cord through leading electrical pillar, probably lead to the power cord short circuit, it is worth studying how to optimize water tank liquid level detection module consequently.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a humidifier water tank liquid level detection module based on wireless power supply to it needs to stretch into power module through the wire and connects capacitanc level sensor in the water tank to expect to solve current humidifier, thereby probably has the problem of certain electric leakage risk.
In order to solve the technical problem, the utility model adopts the following technical scheme:
a wireless power supply-based humidifier water tank liquid level detection module comprises a shell, wherein the shell is used for being mounted on the side wall of a water tank, a liquid level detection device is arranged on the shell, a wireless transmitting end is arranged above the liquid level detection device, and the wireless transmitting end is electrically connected with the liquid level detection device and used for carrying out electric energy transmission and signal transmission between the wireless transmitting end and a wireless receiving end; the liquid level detection device comprises a detection electrode and a module box, wherein the detection electrode is used for forming an electric field in the water tank, the detection electrode is in signal connection with the module box, and the module box is used for collecting a capacitance value generated by the detection electrode and outputting a liquid level signal to a wireless transmitting end.
Preferably, a wireless receiving end corresponding to the wireless transmitting end is arranged above the shell; the wireless transmitting end comprises a first power supply end and a first signal end, the detection electrode is electrically connected with the first power supply end, and the first signal end is in signal connection with the module box; the module box collects capacitance values generated by the detection electrodes and outputs liquid level signals to the first signal end, and the first signal end outputs signals to the wireless receiving end.
The wireless receiving end comprises a second power supply end and a second signal end, wherein the second power supply end corresponds to the first power supply end, and the second signal end corresponds to the first signal end.
The further technical scheme is that the first power supply end and the second power supply end are both provided with a voltage transformation unit, and the voltage transformation unit of the first power supply end and the voltage transformation unit of the second power supply end form a separable transformer.
According to a further technical scheme, a power supply module is arranged above the shell, and the wireless receiving end is arranged on the power supply module and is electrically connected with the power supply module above the shell through the wireless receiving end.
Preferably, the module box comprises a capacitance sensor and a single chip microcomputer, the capacitance sensor and the electromagnetic coil module are respectively connected to the single chip microcomputer and used for acquiring capacitance signal values of the detection electrodes by the capacitance sensor and transmitting the capacitance signal values to the single chip microcomputer, the single chip microcomputer judges current liquid level values according to the current capacitance signals and the calibration electrodes corresponding to the current liquid level, and water level signals are output to the wireless transmitting end through the single chip microcomputer to the upper computer.
Preferably, the detection electrode includes a first electrode and a second electrode, and a potential difference is formed between the first electrode and the second electrode.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a wireless transmitting terminal installs on liquid level detection device, the signal that liquid level detection device gathered passes through wireless transmitting terminal and transmits to wireless receiving terminal, the required electric energy of liquid level detection device passes through wireless receiving terminal and exports wireless transmitting terminal simultaneously, liquid level detection device is supplied with by wireless transmitting terminal, thereby avoid the medium in the water tank to lead to power supply unit to appear short circuit and damage risk along with leading electrical pillar infiltration power supply, on the other hand, can be make the inside relatively independent space environment that forms of water tank, avoid the medium in its water tank can not contact the outside functional element of water tank, effectively reduce the electric shock risk of humidifier.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic diagram of pairing a wireless transmitting end and a wireless receiving end.
Fig. 3 is a schematic view of the housing of the present invention.
Fig. 4 is a schematic view of the working principle of the present invention.
Description of reference numerals:
1-water tank, 3-wireless transmitting end, 4-power supply module, 5-wireless receiving end, 6-detection electrode, 7-module box, 8-shell, 301-first power supply end, 302-first signal end, 501-second power supply end, 502-second signal end, 601-first electrode, 602-second electrode.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1:
referring to fig. 1 to 4, an embodiment of the utility model is, a humidifier water tank liquid level detection module based on wireless power supply, including casing 8, be equipped with liquid level detection device on above-mentioned casing 8 for install at 1 inner wall of water tank by casing 8, be arranged in the liquid level height in detecting water tank 1 by liquid level detection device, wherein, casing 1 can be injection moulding's insulating plastics, and its water tank 1 is current water tank, through fixing casing 1 at the water tank inner wall, and its liquid level detection device is current capacitanc level detector.
The liquid level detection device is provided with a wireless transmitting end 3, and the wireless transmitting end 3 is electrically connected with the liquid level detection device and used for carrying out electric energy transmission and signal transmission between the wireless transmitting end 3 and the wireless receiving end 5.
The liquid level detection device is electrically connected with the wireless transmitting end 3, wherein the wireless transmitting end 3 replaces a conductive column in the existing capacitive water level detector to serve as a functional unit for electric energy transmission, and electric energy is transmitted to the liquid level detection device through the wireless transmitting end 3.
Through wireless receiving terminal 5 to wireless transmitting terminal 3 to the power supply, supply power to liquid level detection device by wireless transmitting terminal 3, the liquid level signal of liquid level detection device feedback simultaneously, through 3 output of wireless transmitting terminal for wireless receiving terminal 5, by wireless receiving terminal 5 output to the host computer.
Need not to lead electrical pillar touch formula contact through between wireless receiving terminal 5 and the wireless transmitting terminal 3, can avoid the medium in the water tank 1 to lead to the power part to appear short circuit and damage risk along with leading electrical pillar infiltration power on the one hand, and on the other hand, can be to make the inside relatively independent space environment that forms of water tank 1, and liquid level detection device fixes in this space environment, can effectively avoid the medium in the water tank 1 to the erosion of functional element, effectively reduces the risk of electrocution of humidifier.
The liquid level detection device comprises a detection electrode 6 and a module box 7, and is used for forming an electric field in the water tank 1 by the detection electrode 6, namely, the detection electrode 6 forms a potential difference in the water tank, so that in a potential difference environment, the capacitance value of the detection electrode 6 changes due to the liquid level change in the water tank 1, and the capacitance value generated by the detection electrode 6 is collected by the module box 7.
The detection electrode 6 is in signal connection with the module box 7, and the module box 7 collects capacitance generated by the detection electrode 6 and outputs a liquid level signal to the wireless transmitting end 3.
Further, the detection electrode 6 includes a first electrode 601 and a second electrode 602, and a potential difference is formed between the first electrode 601 and the second electrode 602, that is, the detection electrode 6 obtains a potential difference by using the first electrode 601 and the second electrode 602 in the form of long and short electrodes, determines a capacitance value by using the potential difference, and determines the height of the water level in the water tank 1 by using the capacitance value.
Example 2:
based on the above embodiment, referring to fig. 2, another embodiment of the present invention is that a wireless receiving terminal 5 corresponding to the wireless transmitting terminal 3 is disposed above the housing 8, the wireless transmitting terminal 3 includes a first power supply terminal 301 and a first signal terminal 302, the liquid level detecting device includes a detecting electrode 6 and a module box 7, the detecting electrode 6 is electrically connected to the first power supply terminal 301, and the first signal terminal 302 is in signal connection with the module box 7; specifically, the first power supply terminal 301 is electromagnetically connected to the detection electrode 6, and the first signal terminal 302 and the module case 7 can output signals through a communication cable and then wirelessly output the signals to the wireless receiving terminal 5 through the first signal terminal 302.
The detection electrode 6 is used for collecting capacitance generated by the detection electrode 6 and outputting a liquid level signal to the first signal end 302, the module box 7 is used for outputting a signal to the wireless receiving end 5 from the first signal end 302, the detection electrode 6 is used for forming an electric field in the water tank 1, the detection electrode 6 generates a capacitor, the capacitance is collected by the module box 7, the capacitance can be changed by the detection electrode 6 due to the rise and fall of the medium height in the water tank 1, the liquid level height is preliminarily determined by the change, the capacitance of the detection electrode 6 is collected by the module box 7, the liquid level height in the water tank 1 can be calculated, and the calculation formula is the same as the basic principle of the capacitance type liquid level sensor measurement.
Further, the wireless receiving end 5 includes a second power end 501 and a second signal end 502, the second power end 501 corresponds to the first power end 301, specifically, the wireless receiving end 5 corresponds to the wireless transmitting end 3, wherein the wireless receiving end 5 itself has a voltage transforming unit, wherein the wireless transmitting end 3 also has a voltage transforming unit, and the voltage transforming unit of the wireless receiving end 5 and the voltage transforming unit of the wireless transmitting end 3 form a separable transformer, which adopts an inductive coupling type wireless power transmission mode to transmit electric energy, so that based on the electromagnetic induction principle, the separable transformer can realize contactless stable voltage transmission of electric energy across an air gap.
The second signal terminal 502 corresponds to the first signal terminal 302; the second signal terminal 502 and the first signal terminal 302 may use NFC boards for signal transmission, so that bidirectional identification and connection can be achieved. And the working frequency is 13.56MHz, the second signal terminal 502 and the first signal terminal 302 realize short-distance interaction through two NFC boards, thereby simplifying the whole authentication and identification process and enabling the liquid level signals to access each other more directly, more safely and more clearly.
Further, a power supply module 4 is disposed above the housing 8, and the wireless receiving terminal 5 is disposed on the power supply module 4 and electrically connected to the power supply module 4 above the housing 8 through the wireless receiving terminal 5. Therefore, the purpose that the power supply module 4 carries out wireless power supply and signal transmission to the wireless transmitting terminal 3 through the wireless receiving terminal 5 is achieved.
Specifically, the power supply paths of the device may be various, for example, common 220V power frequency alternating current is input to the power supply module 4, and corresponding alternating current is output through rectification and filtering of the power supply module 4; the power supply module 4 may also have a battery, and the power supply module 4 directly outputs the corresponding alternating current.
The alternating current is supplied to the separable transformer formed by the first power supply terminal 301 and the second power supply terminal 501, and the separable transformer utilizes the coils of the two transforming units to generate electromagnetic induction, so that the electric energy is transmitted from one transforming unit to the other transforming unit.
If the VA value of the power supply module needs to be reduced, the power factor is increased, and the effect of transmitting power from the wireless transmitting terminal 3 to the load is improved. A compensation coil and a common power regulating circuit of the existing wireless transmission device can be additionally arranged by a person skilled in the art to improve the wireless transmission of electric energy in an electric energy load mode to optimize the electric energy and eliminate the influence of coil leakage inductance generated in the bidirectional transmission process.
Based on above-mentioned embodiment, it is shown with reference to fig. 4, an embodiment of the utility model is that, above-mentioned module box 7 includes capacitive sensor, singlechip, and above-mentioned capacitive sensor inserts the singlechip respectively with the solenoid module for gather detecting electrode 6's capacitance signal value and transmit to the singlechip by capacitive sensor, by the singlechip according to current capacitance signal, and the current liquid level corresponds to judge to mark the electrode and draw current liquid level value, and through the singlechip to 3 output water level signals of wireless transmitting terminal to the host computer.
The power supply voltage DC5V + -5% of the module box 1, the power consumption current less than 15mA, the applicable temperature range of 0-50 ℃, the detection precision less than or equal to + -5% under the full range, and the communication mode of the module box transmits through the existing wireless output module; wherein the power supply of the cartridge 1 is provided by the humidifier host, in particular a solenoid may be provided between the host and the cartridge for wireless power supply.
For example, the capacitance sensor is an existing element, the capacitance detection module may be a PCAP01 capacitance detection chip or other chips for detecting capacitance change, the measurement flexibility of the PCAP01 capacitance detection chip is very high, and the chip is suitable for low power consumption measurement, high precision measurement and rapid measurement, the chip is a capacitance digital conversion chip with a DSP processing unit, and is mainly used for capacitance measurement, and capacitance signal data acquired by the capacitance sensor is converted into time signal data by the PCAP01 capacitance detection chip; and the capacitance detection module transmits data to the single chip microcomputer through the SPI bus.
For example, the model of the single chip microcomputer can be MSP430, and the model supports key pressing and external display; the wireless output module is a standard wireless communication module adapted in the existing module box 1; the WPT-10 measurement module is replaced by the existing standard wireless communication module for serial communication.
The capacitance sensor outputs capacitance signal data to the capacitance detection module, the capacitance detection module converts the capacitance signal data into time signal data, the time signal data is sent to the single chip microcomputer, the single chip microcomputer performs label alignment and transmits the time signal data to the wireless transmitting end 3, the wireless transmitting end 3 transmits signals to the wireless receiving end 5 through the principle of electromagnetic induction, the wireless receiving end 5 transmits the signals to a corresponding upper computer, and the upper computer can be an existing computer or other control terminals.
Reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," "a preferred embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally in this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.
Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.
Claims (7)
1. The utility model provides a humidifier water tank liquid level detection module based on wireless power supply, includes casing (8) for install at water tank (1) lateral wall by casing (8), be equipped with liquid level detection device on casing (8), its characterized in that: a wireless transmitting end (3) is arranged above the liquid level detection device, and the wireless transmitting end (3) is electrically connected with the liquid level detection device and is used for performing electric energy transmission and signal transmission between the wireless transmitting end (3) and the wireless receiving end (5); the liquid level detection device comprises a detection electrode (6) and a module box (7) and is used for forming an electric field in the water tank (1) through the detection electrode (6), the detection electrode (6) is in signal connection with the module box (7), and the module box (7) collects capacitance values generated by the detection electrode (6) and outputs liquid level signals to the wireless transmitting end (3).
2. The wirelessly powered humidifier water tank level detection module as claimed in claim 1, wherein: a wireless receiving end (5) corresponding to the wireless transmitting end (3) is arranged above the shell (8); the wireless transmitting end (3) comprises a first power supply end (301) and a first signal end (302), the detection electrode (6) is electrically connected with the first power supply end (301), and the first signal end (302) is in signal connection with the module box (7); the module box (7) collects capacitance values generated by the detection electrodes (6) and outputs liquid level signals to the first signal end (302), and the first signal end (302) outputs signals to the wireless receiving end (5).
3. The wirelessly powered humidifier water tank level detection module as claimed in claim 2, wherein: the wireless receiving end (5) comprises a second power supply end (501) and a second signal end (502), the second power supply end (501) corresponds to the first power supply end (301), and the second signal end (502) corresponds to the first signal end (302).
4. The wirelessly powered humidifier water tank level detection module as claimed in claim 3, wherein: the first power supply end (301) and the second power supply end (501) are respectively provided with a transformation unit, and the transformation units of the first power supply end (301) and the second power supply end (501) form a separable transformer.
5. The wirelessly powered humidifier water tank level detection module as claimed in claim 3, wherein: the power supply module (4) is arranged above the shell (8), and the wireless receiving end (5) is arranged on the power supply module (4) and is electrically connected with the power supply module (4) above the shell (8) through the wireless receiving end (5).
6. The wirelessly powered humidifier water tank level detection module as claimed in claim 1, wherein: the module box (7) comprises a capacitance sensor and a single chip microcomputer, the capacitance sensor and the electromagnetic coil module are respectively connected into the single chip microcomputer and used for acquiring capacitance signal values of the detection electrodes (6) through the capacitance sensor and transmitting the capacitance signal values to the single chip microcomputer, the single chip microcomputer judges current liquid level values according to current capacitance signals and the calibration electrodes corresponding to current liquid levels and outputs water level signals to the wireless transmitting end (3) through the single chip microcomputer to the upper computer.
7. The wirelessly powered humidifier water tank level detection module as claimed in claim 1, wherein: the detection electrode (6) comprises a first electrode (601) and a second electrode (602), and a potential difference is formed between the first electrode (601) and the second electrode (602).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022307369.0U CN213067824U (en) | 2020-10-16 | 2020-10-16 | Humidifier water tank liquid level detection module based on wireless power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022307369.0U CN213067824U (en) | 2020-10-16 | 2020-10-16 | Humidifier water tank liquid level detection module based on wireless power supply |
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| Publication Number | Publication Date |
|---|---|
| CN213067824U true CN213067824U (en) | 2021-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022307369.0U Active CN213067824U (en) | 2020-10-16 | 2020-10-16 | Humidifier water tank liquid level detection module based on wireless power supply |
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|---|---|
| CN (1) | CN213067824U (en) |
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- 2020-10-16 CN CN202022307369.0U patent/CN213067824U/en active Active
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