CN107816080A - A kind of liquid level detection system based on shower bath - Google Patents

A kind of liquid level detection system based on shower bath Download PDF

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Publication number
CN107816080A
CN107816080A CN201711255012.9A CN201711255012A CN107816080A CN 107816080 A CN107816080 A CN 107816080A CN 201711255012 A CN201711255012 A CN 201711255012A CN 107816080 A CN107816080 A CN 107816080A
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CN
China
Prior art keywords
gate
magnetic valve
water
liquid level
inputs
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.)
Withdrawn
Application number
CN201711255012.9A
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Chinese (zh)
Inventor
田洪伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chengdu Fu Zhong Cheng Technology Co Ltd
Original Assignee
Chengdu Fu Zhong Cheng Technology Co Ltd
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Filing date
Publication date
Application filed by Chengdu Fu Zhong Cheng Technology Co Ltd filed Critical Chengdu Fu Zhong Cheng Technology Co Ltd
Priority to CN201711255012.9A priority Critical patent/CN107816080A/en
Publication of CN107816080A publication Critical patent/CN107816080A/en
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B1/00—Methods or layout of installations for water supply
    • E03B1/04—Methods or layout of installations for water supply for domestic or like local supply
    • E03B1/041—Greywater supply systems
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B1/00—Methods or layout of installations for water supply
    • E03B1/04—Methods or layout of installations for water supply for domestic or like local supply
    • E03B1/041—Greywater supply systems
    • E03B1/042—Details thereof, e.g. valves or pumps
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B1/00—Methods or layout of installations for water supply
    • E03B1/04—Methods or layout of installations for water supply for domestic or like local supply
    • E03B1/041—Greywater supply systems
    • E03B1/042—Details thereof, e.g. valves or pumps
    • E03B1/044—Switch valves in waste pipes
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/04—Water-basin installations specially adapted to wash-basins or baths
    • E03C1/0408—Water installations especially for showers
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/04—Water-basin installations specially adapted to wash-basins or baths
    • E03C1/044—Water-basin installations specially adapted to wash-basins or baths having a heating or cooling apparatus in the supply line
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
    • E03C1/122—Pipe-line systems for waste water in building
    • E03C1/1222—Arrangements of devices in domestic waste water pipe-line systems
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G05B19/0423—Input/output
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B1/00—Methods or layout of installations for water supply
    • E03B1/04—Methods or layout of installations for water supply for domestic or like local supply
    • E03B1/041—Greywater supply systems
    • E03B2001/045—Greywater supply systems using household water

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Structural Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Bathtubs, Showers, And Their Attachments (AREA)

Abstract

The invention discloses a kind of liquid level detection system based on shower bath, it is related to level sensing field；It includes control device, ground and closestool, and the control device includes single-chip microcomputer, liquid level detection circuit and solenoid valve block, and the liquid level detection circuit and solenoid valve block are electrically connected with single-chip microcomputer；Waste pipe is provided with the ground, waste water connects closestool via waste pipe；It also includes shower bath, and the shower bath includes cold water pipe, hot-water line, Portable rose, Portable rose oral siphon and top-spraying gondola；The present invention solves the problems, such as that existing shower bath waste is serious, cistern feed source is single, has reached the effect of water-saving heat insulation while hot water has been used in recycling.

Description

A kind of liquid level detection system based on shower bath
Technical field
The present invention relates to level sensing field, especially a kind of liquid level detection system based on shower bath.
Background technology
Closestool is also drawn well just, is the bucket for having lid of stool and urine；The invention of closestool is referred to as a great invention, and it is solved The people itself that determined, which eats and drinks, draws that spreads to enter to go wrong, and develops into again utilize siphon, spiral siphon, now newest injection siphon later The water closet of the principle such as formula and super rotation hydrocone type；The classification of closestool is a lot, have it is split and disjunctor, with science and technology hair Exhibition, according to the supporting mode of toilet lid, can also be divided into conventional toilet and intelligent closestool.
People are required for first discharging some cold water before Water-heating shower is washed at present, reason be thermal water source between shower faucet all One section of water pipe is installed, the cool water quantity of water pipe internal memory several liters at least, more more than ten liters, some solar water heaters are due to mounted in room Outside, the cold water in its water pipe is even more more, because cold water sprays from gondola water faucet in bulk before shower, it has not been convenient to which people collect, often Be allowed to outwards drain, and while cold water is discharged, it is also necessary to often sound out water temperature with hand to confirm the discharge of cold water Situation, so both bother, can also cause the secondary waste at water source；Shower is as a kind of health and compares the bathing means mesh of water saving Before be widely used, the hot water after current existing bathroom use is expelled directly out, waste it is serious, the feed source of closestool only with from Right water pipe connection, closestool can be implemented in combination with economizing on water with water with shower waste.
The content of the invention
It is an object of the invention to：The invention provides a kind of liquid level detection system based on shower bath, solves existing There is shower bath to waste the problem of serious, cistern feed source is single.
The technical solution adopted by the present invention is as follows：
A kind of liquid level detection system based on shower bath, including control device, ground and closestool, the control device bag Single-chip microcomputer, liquid level detection circuit and solenoid valve block are included, the liquid level detection circuit and solenoid valve block are electrically connected with single-chip microcomputer； Waste pipe is provided with the ground, waste water connects closestool via waste pipe；The liquid level detection circuit connection is as follows：Input a Pin connects NOT gate U4 inputs, and NOT gate U4 inputs are also sequentially connected with electricity via resistance R4 connecting valve K, NOT gate U4 output ends Power cathode is connected after resistance R8, LED4, NOT gate U4 output ends are also via D1 connection NOT gate U5 inputs, the connection of NOT gate U5 output ends NOT gate U5 inputs are connected after resistance R9, NOT gate U5 output ends are also connected with NOT gate U6 inputs, NOT gate U6 output ends connection electric capacity Resistance R9 is connected after C1, NOT gate U6 output ends connect power cathode after being also connected with electric capacity C2；Positive source connecting valve K；Input B pins connection NOT gate U3 inputs are held, NOT gate U3 inputs also sequentially connect via resistance R3 connecting valve K, NOT gate U3 output ends Power cathode is connected after connecting resistance R7, LED3；Input c pins connect NOT gate U2 inputs, and NOT gate U2 inputs are also via electricity R2 connecting valve K are hindered, NOT gate U2 output ends connect power cathode after being sequentially connected with resistance R6, LED2；The connection of input d pins is non- Door U1 inputs, NOT gate U1 inputs are also sequentially connected with resistance R5, LED1 via resistance R1 connecting valve K, NOT gate U1 output ends After connect power cathode；Input d pins connect power cathode.
Preferably, the solenoid valve block includes magnetic valve A, magnetic valve B, magnetic valve C, magnetic valve D and magnetic valve E, described The low side on ground is provided with waterwater entrance, high-end to be provided with wastewater outlet, is provided between the waterwater entrance and wastewater outlet The waste pipe to spiral, the closestool are provided with storage tank, and the bottom of storage tank is provided with closestool water inlet pipe, the wastewater outlet Closestool water inlet pipe and floor drain pipe are connected to by pipeline, the wastewater outlet is provided with electromagnetism with closestool water inlet pipe junction Valve E, the wastewater outlet are provided with magnetic valve D with floor drain pipe junction；The magnetic valve A, magnetic valve, magnetic valve C, magnetic valve D and magnetic valve E is electrically connected with single-chip microcomputer.
Preferably, the control device also includes flow control valve and temperature sensor, the flow control valve and temperature Sensor is electrically connected with single-chip microcomputer.
Preferably, the liquid level detection system also includes shower bath, the shower bath include cold water pipe, hot-water line, Portable rose, Portable rose oral siphon and top-spraying gondola, the cold water pipe access top-spraying gondola oral siphon after being connected with hot-water line, The Portable rose is arranged on Portable rose oral siphon, and the top-spraying gondola oral siphon connects Portable rose oral siphon, described Magnetic valve A is provided with top-spraying gondola oral siphon, magnetic valve B, the top-spraying gondola are provided with the Portable rose oral siphon Temperature sensor is provided with below oral siphon solenoid A, looped pipeline, the pair are additionally provided with the top of the top-spraying gondola oral siphon Magnetic valve C is provided with pipe, flow control valve is provided with the cold water pipe.
Preferably, the shower bath also includes shell, and the shell is arranged in shower wall, the cold water pipe, heat Water pipe, top-spraying gondola oral siphon and Portable rose oral siphon are arranged at the enclosure.
In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
1. the present invention detects the liquid level detection circuit of cistern by setting, and the water after shower is useless by what is spiraled Water pipe heating improves bath temperature, while waste water is connected into closestool, detects whether to need to use by liquid level detection circuit useless Water rushes closestool, the recycling of waste water, solves the problems, such as that existing shower bath waste is serious, cistern feed source is single, The effect of water-saving heat insulation while hot water has been used in recycling is reached；
2. the shower bath of the present invention is simple for structure, water pipe is arranged in shell, improves the humidity resistance of intelligent device Extend its service life, promote to improve the practicality of shower system；
3. the water of waste is fed directly to water storage device, high-efficiency water-saving by the present invention by setting looped pipeline；Filled by being incubated Raising bath temperature is put, avoids existing super bath lamp from adjusting the shortcomings that inconvenient；By setting single-chip microcomputer, touch-screen, flow control valve And magnetic valve, realize the switch of intelligent control shower bath and control the temperature of water outlet, avoid existing machinery switch-mode regulation temperature Perceive the shortcomings that inconvenient.
Brief description of the drawings
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein：
Fig. 1 is the liquid level detection circuit figure of the present invention；
Fig. 2 is the system block diagram of the present invention；
Fig. 3 is the ground side view of the present invention；
Fig. 4 is the structural representation of the present invention；
Fig. 5 is the ground front view of the present invention；
Fig. 6 is the closestool schematic diagram of the present invention；
Reference：
1- cold water pipes, 2- hot-water lines, 3- shells, 4- top-spraying gondola oral siphons, 5- Portable rose oral siphons, 6- top sprays flower Spill, 7- Portable roses, 8- flow control valves, 9- magnetic valves B, 10- touch-screen, 11- temperature sensors, 12- magnetic valves A, 13- pair Pipe, 14- magnetic valves C, 15- ground, 151- waste pipes, 152- waterwater entrances, 153- wastewater outlets, 16- closestools, 161- water storages Case, 162- closestool water inlet pipes, 163- magnetic valves D, 164- magnetic valve E, 165- floor drain pipe.
Embodiment
All features disclosed in this specification, or disclosed all methods or during the step of, except mutually exclusive Feature and/or step beyond, can combine in any way.
Elaborated with reference to Fig. 1-6 couples of present invention.
Embodiment 1
A kind of liquid level detection system based on shower bath, including control device, ground 15 and closestool 16, control device bag Single-chip microcomputer, liquid level detection circuit and solenoid valve block are included, liquid level detection circuit and solenoid valve block are electrically connected with single-chip microcomputer；Ground Waste pipe 151 is provided with 15, waste water connects closestool 16 via waste pipe 151；Liquid level detection circuit connection is as follows：Input a draws Pin connects NOT gate U4 inputs, and NOT gate U4 inputs are also sequentially connected with resistance via resistance R4 connecting valve K, NOT gate U4 output ends Power cathode is connected after R8, LED4, NOT gate U4 output ends are also via D1 connection NOT gate U5 inputs, NOT gate U5 output ends connection electricity NOT gate U5 inputs are connected after hindering R9, NOT gate U5 output ends are also connected with NOT gate U6 inputs, NOT gate U6 output ends connection electric capacity C1 Resistance R9 is connected afterwards, and NOT gate U6 output ends connect power cathode after being also connected with electric capacity C2；Positive source connecting valve K；Input b Pin connects NOT gate U3 inputs, and NOT gate U3 inputs are also sequentially connected with electricity via resistance R3 connecting valve K, NOT gate U3 output ends Power cathode is connected after resistance R7, LED3；Input c pins connect NOT gate U2 inputs, and NOT gate U2 inputs are also via resistance R2 Connecting valve K, NOT gate U2 output ends connect power cathode after being sequentially connected with resistance R6, LED2；Input d pins connection NOT gate U1 Input, NOT gate U1 inputs also connect via resistance R1 connecting valve K, NOT gate U1 output ends after being sequentially connected with resistance R5, LED1 Connect power cathode；Input d pins connect power cathode.
Solenoid valve block includes magnetic valve A12, magnetic valve B9, magnetic valve C14, magnetic valve D163 and magnetic valve E164, ground 15 low side is provided with waterwater entrance 152, high-end to be provided with wastewater outlet 153, between waterwater entrance 152 and wastewater outlet 153 The waste pipe 151 to spiral is provided with, closestool 16 is provided with storage tank 161, and the bottom of storage tank 161 is provided with closestool water inlet pipe 162, Wastewater outlet 153 is connected to closestool water inlet pipe 162 and floor drain pipe 165, wastewater outlet 153 and closestool water inlet pipe by pipeline 162 junctions are provided with magnetic valve E164, and wastewater outlet 153 is provided with magnetic valve D163 with the junction of floor drain pipe 165；Magnetic valve A12, magnetic valve B9, magnetic valve C14, magnetic valve D163 and magnetic valve E164 are electrically connected with single-chip microcomputer.
Control device also includes flow control valve 8 and temperature sensor 11, flow control valve 8 and temperature sensor 11 and list Piece machine is electrically connected with.
Embodiment 2
Liquid level detection system also includes shower bath, and shower bath includes cold water pipe 1, hot-water line 2, Portable rose 7, hand-held Gondola water faucet oral siphon 5 and top-spraying gondola 6, cold water pipe 1 and hot-water line 2 access top-spraying gondola oral siphon 4 after connecting, and Portable rose 7 is set Put on Portable rose oral siphon 5, top-spraying gondola oral siphon 4 connects Portable rose oral siphon 5, is set on top-spraying gondola oral siphon 4 Magnetic valve A12 is equipped with, magnetic valve B9, the solenoid A12 of top-spraying gondola oral siphon 4 lower sections are provided with Portable rose oral siphon 5 Temperature sensor 11 is provided with, the top of top-spraying gondola oral siphon 4 is additionally provided with looped pipeline 13, magnetic valve C14 is provided with looped pipeline 13, Flow control valve 8 is provided with cold water pipe 1.
Shower bath also includes shell 3, and shell 3 is arranged in shower wall, and cold water pipe 1, hot-water line 2, top-spraying gondola enter Water pipe 4 and Portable rose oral siphon 5 are arranged inside shell 3.
Operation principle：By the way that waste water is reused, waste water is on the one hand connected into one water tank of closestool, utilizes level sensing Electric circuit inspection cistern water level, if Water in Water Tanks is less, waste water is transported to closestool using single-chip microcomputer control magnetic valve A water tank, and using single-chip microcomputer timer, realize regular discharge waste water, bathroom on the other hand improved by floor heating structure Temperature；Single-chip microcomputer use TFT screens using ATC89C51 series, touch-screen, and the minimum system of single-chip microcomputer includes crystal oscillating circuit and again Position circuit；A, b, c, d, e pin connection single-chip microcomputer pin P1.0, P1.1 corresponding to input row's pin of liquid level detection circuit, P1.2、P1.3、P1.6；Magnetic valve B or magnetic valve C, realization is controlled to make by single-chip microcomputer after the temperature of touch-screen input setting With Portable rose or top-spraying gondola, temperature sensor detection leaving water temperature, treat that leaving water temperature is not up to design temperature, then monolithic Water is output to water storage device by machine control magnetic valve C by looped pipeline, is circulated with hot water by ground into waste pipe, is realized and protect Temperature, the outlet of waste pipe set magnetic valve D and magnetic valve E to connect closestool water inlet pipe and floor drain respectively, realized the water after circulation Realization reuses, one of feed source as cistern；Level condition is shown by LED, is easy to check, it is practical, Further improve the practicality and convenience of the present invention；The present invention detects the liquid level detection circuit of cistern by setting, will Water after shower improves bath temperature by the waste pipe to spiral, while waste water is connected into closestool, passes through level sensing electricity Road detects whether to need to use waste water to rush closestool, the recycling of waste water, solves existing shower bath and waste serious, closestool water The problem of case feed source is single, the effect of water-saving heat insulation while hot water has been used in recycling is reached.

Claims (5)

  1. A kind of 1. liquid level detection system based on shower bath, it is characterised in that：Including control device, ground (15) and closestool (16), the control device includes single-chip microcomputer, liquid level detection circuit and solenoid valve block, the liquid level detection circuit and solenoid valve block It is electrically connected with single-chip microcomputer；Waste pipe (151) is provided with the ground (15), waste water connects closestool via waste pipe (151) (16)；The liquid level detection circuit connection is as follows：Input a pins connect NOT gate U4 inputs, NOT gate U4 inputs also via Resistance R4 connecting valve K, NOT gate U4 output ends connect power cathode after being sequentially connected with resistance R8, LED4, and NOT gate U4 output ends are also Via D1 connection NOT gate U5 inputs, NOT gate U5 inputs, NOT gate U5 output ends are connected after NOT gate U5 output ends connection resistance R9 NOT gate U6 inputs are also connected with, connect resistance R9 after NOT gate U6 output ends connection electric capacity C1, NOT gate U6 output ends are also connected with electric capacity Power cathode is connected after C2；Positive source connecting valve K；Input b pins connect NOT gate U3 inputs, and NOT gate U3 inputs are also Via resistance R3 connecting valve K, NOT gate U3 output ends connect power cathode after being sequentially connected with resistance R7, LED3；Input c pins NOT gate U2 inputs are connected, NOT gate U2 inputs are also sequentially connected with resistance via resistance R2 connecting valve K, NOT gate U2 output ends Power cathode is connected after R6, LED2；Input d pins connect NOT gate U1 inputs, and NOT gate U1 inputs also connect via resistance R1 Switch K is met, NOT gate U1 output ends connect power cathode after being sequentially connected with resistance R5, LED1；Input d pins connection power supply is born Pole.
  2. A kind of 2. liquid level detection system based on shower bath according to claim 1, it is characterised in that：The magnetic valve Group includes magnetic valve A (12), magnetic valve B (9), magnetic valve C (14), magnetic valve D (163) and magnetic valve E (164), the ground (15) low side is provided with waterwater entrance (152), high-end to be provided with wastewater outlet (153), the waterwater entrance (152) and waste water The waste pipe (151) to spiral is provided between outlet (153), the closestool (16) is provided with storage tank (161), the storage tank (161) bottom is provided with closestool water inlet pipe (162), and the wastewater outlet (153) is connected to closestool water inlet pipe by pipeline (162) and floor drain pipe (165), the wastewater outlet (153) are provided with magnetic valve E with closestool water inlet pipe (162) junction (164), the wastewater outlet (153) is provided with magnetic valve D (163) with floor drain pipe (165) junction；The magnetic valve A (12), Magnetic valve B (9), magnetic valve C (14), magnetic valve D (163) and magnetic valve E (164) are electrically connected with single-chip microcomputer.
  3. A kind of 3. liquid level detection system based on shower bath according to claim 2, it is characterised in that：The control dress Putting also includes flow control valve (8) and temperature sensor (11), the flow control valve (8) and temperature sensor (11) and monolithic Machine is electrically connected with.
  4. A kind of 4. liquid level detection system based on shower bath according to claim 3, it is characterised in that：The liquid level inspection Examining system also includes shower bath, and the shower bath includes cold water pipe (1), hot-water line (2), Portable rose (7), Portable rose Top-spraying gondola oral siphon (4), institute are accessed after oral siphon (5) and top-spraying gondola (6), the cold water pipe (1) and hot-water line (2) connection State Portable rose (7) to be arranged on Portable rose oral siphon (5), top-spraying gondola oral siphon (4) the connection Portable rose enters water Manage (5), be provided with magnetic valve A (12) on the top-spraying gondola oral siphon (4), be provided with the Portable rose oral siphon (5) Magnetic valve B (9), top-spraying gondola oral siphon (4) solenoid A (12) lower section are provided with temperature sensor (11), the top Looped pipeline (13) is additionally provided with the top of spraying gondola oral siphon (4), looped pipeline (13) place is provided with magnetic valve C (14), the cold water Flow control valve (8) is provided with pipe (1).
  5. 5. the Intelligent shower system that a kind of multifunctional efficient stated according to claim 4 is economized on water, it is characterised in that：The shower dress Putting also includes shell (3), and the shell (3) is arranged in shower wall, the cold water pipe (1), hot-water line (2), top-spraying gondola It is internal that oral siphon (4) and Portable rose oral siphon (5) are arranged at the shell (3).
CN201711255012.9A 2017-12-02 2017-12-02 A kind of liquid level detection system based on shower bath Withdrawn CN107816080A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711255012.9A CN107816080A (en) 2017-12-02 2017-12-02 A kind of liquid level detection system based on shower bath

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711255012.9A CN107816080A (en) 2017-12-02 2017-12-02 A kind of liquid level detection system based on shower bath

Publications (1)

Publication Number Publication Date
CN107816080A true CN107816080A (en) 2018-03-20

Family

ID=61605326

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711255012.9A Withdrawn CN107816080A (en) 2017-12-02 2017-12-02 A kind of liquid level detection system based on shower bath

Country Status (1)

Country Link
CN (1) CN107816080A (en)

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