CN113432800A - Flexible water droplet detection device of intelligence of flexible multi-application scene - Google Patents
Flexible water droplet detection device of intelligence of flexible multi-application scene Download PDFInfo
- Publication number
- CN113432800A CN113432800A CN202110708602.2A CN202110708602A CN113432800A CN 113432800 A CN113432800 A CN 113432800A CN 202110708602 A CN202110708602 A CN 202110708602A CN 113432800 A CN113432800 A CN 113432800A
- Authority
- CN
- China
- Prior art keywords
- detection device
- water
- drop detection
- flexible
- water drop
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 215
- 238000001514 detection method Methods 0.000 title claims abstract description 113
- 238000010521 absorption reaction Methods 0.000 claims abstract description 36
- 239000002131 composite material Substances 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims description 10
- 230000008859 change Effects 0.000 claims description 9
- 239000004020 conductor Substances 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000011889 copper foil Substances 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 claims description 3
- 239000011888 foil Substances 0.000 claims description 3
- 230000002209 hydrophobic effect Effects 0.000 claims description 3
- 239000012466 permeate Substances 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 238000005070 sampling Methods 0.000 abstract description 24
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 4
- 239000000523 sample Substances 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 239000011358 absorbing material Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000008239 natural water Substances 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
- G01N27/121—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid for determining moisture content, e.g. humidity, of the fluid
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Examining Or Testing Airtightness (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses an intelligent flexible water drop detection device for flexible multi-application scenes, which comprises a flexible water drop detection device and a main control module, wherein the flexible water drop detection device comprises five layers of composite materials, namely a first insulating layer, a second conducting layer, a third water absorption layer, a fourth conducting layer and a fifth insulating layer from top to bottom in sequence; the first insulating layer, the second conducting layer, the fourth conducting layer and the fifth insulating layer are all provided with uniformly distributed small holes, the second conducting layer and the fourth conducting layer are both provided with conducting wires, the second conducting layer and the fourth conducting layer are matched to form a water drop detection device R1, and two electrodes of a water drop detection device resistor R1 are respectively connected with a power supply Ui and a divider resistor R2; the other end of the voltage dividing resistor R2 is grounded; the divider resistor R2 is connected with the input port of the main control module through a cable; the main control module judges whether water leaks or not according to the obtained sampling voltage value A. The flexible water drop detection device is connected with the main control module, so that a large amount of labor cost is not required, and the probability of errors in the detection process is reduced.
Description
Technical Field
The invention relates to the field of water drop detection, in particular to an intelligent flexible water drop detection device with multiple flexible application scenes.
Background
In real life, water leakage of pipelines, containers, electronic equipment, mobile phones, automobile engines and the like is often monitored, the water leakage condition is found in time, otherwise, equipment, production and life are affected, and accidents can happen seriously. At present, there are two methods for detecting water drops under the water leakage (water seepage) scene: one method is to judge the position of a water leakage point by detecting the sound generated by water leakage of a water pipe, and the detection method is mainly used for detecting water leakage caused by the rupture of a water supply pipeline; in the other method, the electrical characteristics of the contact are detected by two probes according to the conductivity of water, and whether water contacts the probes is judged.
The current water leakage monitoring technology problem is as follows:
because the current water pipe leaks mainly through sound and sound wave monitoring, when for the seepage or leak unobviously, the noise of leaking is very little, can't judge whether leak through gathering the noise that leaks.
When the probe is used for detection, if a target container to be detected is a sealed container or the shape of the container is irregular, the water level detection probe cannot be put into the container, and the probe cannot be fixed.
The existing detection device is high in cost, when a container and a detected object are in multiple positions and need to be subjected to water leakage detection, a plurality of detection devices need to be independently installed, the required cost is high, and the efficiency is low.
At present, the water leakage detection needs to be operated or patrolled manually at regular intervals, so that the water leakage is difficult to find out in the first time, alarm in time and take leakage repairing measures, and the requirements of equipment and facilities with high leakage prevention requirements such as machine rooms, power systems and the like cannot be met.
At present, a good solution for water seepage detection and protection of compact equipment such as mobile phones and automobile engines is not provided.
Therefore, it is necessary to improve the existing water leakage detection device to overcome the above problems.
Disclosure of Invention
In order to solve the problem of water leakage and water seepage detection requirements of equipment, closed containers and water transmission facilities with high anti-leakage requirements, such as machine rooms, air conditioning systems, electronic equipment, automobiles and the like, the technical scheme provides the intelligent flexible water drop detection device with multiple flexible application scenes.
The technical scheme adopted by the invention is as follows: the utility model provides a flexible water droplet detection device of intelligence of flexible multi-application scene, includes flexible water droplet detection device and host system, wherein:
the flexible water drop detection device comprises five layers of composite materials, wherein the five layers of composite materials are a first insulating layer, a second conducting layer, a third water absorption layer, a fourth conducting layer and a fifth insulating layer from top to bottom in sequence; uniformly distributed small holes are formed in the first insulating layer, the second conducting layer, the fourth conducting layer and the fifth insulating layer, and the diameter of each small hole is 1.5-3 m;
the second conducting layer and the fourth conducting layer are both provided with conducting wires, the five layers of composite materials are matched to form a water drop detection device R1, the water drop detection device R1 is non-conductive when dry, and is conductive after water seepage, and the conductivity after water seepage changes along with the change of water absorption capacity;
two electrodes of a water drop detection device resistor R1 are respectively connected with a power supply Ui and a fixed value divider resistor R2; the value of the R2 is 1000 ohms, and the other end of the divider resistor R2 is grounded;
the divider resistor R2 is connected with the input port of the main control module through a cable; the main control module samples the analog voltage input into the analog port at intervals of time T to obtain a value A, obtains a voltage value U0 of a voltage dividing resistor R2 through a formula U0-3.3A/1023, and judges whether water drops permeate or not through the size of the sampled voltage value A.
Preferably, the voltage U0 output by the voltage dividing resistor R2 is U1 (R2/(R1+ R2)).
Preferably, the main control module comprises an MCU, and the MCU adopts an ESP8266 chip.
Preferably, the analog port input voltage value of the ESP8266 chip is 3.3V at most, and the analog port voltage resolution is 0.00323V.
Preferably, the water drop detection device resistor R1 has a critical value of water absorption and conduction of 0.004ml, and when the water absorption capacity of the flexible water drop detection device is equal to 0.004ml, the water drop detection device resistor R1 is conductive and has a resistance value of 1200K ohms, and when U0 is 1.5V. When the water absorption capacity of the flexible water drop detection device is less than 0.004ml, the detected resistance value is large and unstable, so that the critical value of the water absorption and conduction of the water drop detection device resistor R1 is 0.004 ml.
Preferably, the critical value of the water saturation of the water drop detection device resistor R1 is 0.02ml, when the water absorption capacity of the flexible water drop detection device is equal to or greater than 0.02ml, the resistance value of the water drop detection device resistor R1 is 500K ohm, at this time, U0 is 3.1V, and when the water absorption capacity of the flexible water drop detection device is greater than 0.02ml, the water absorption capacity is saturated, the water drop detection device resistor R1 is not changed, and therefore the output voltage is not changed any more.
Preferably, when U0 is less than 1.5V, it can be judged that there is no water leakage, and when U0 is greater than 1.5V, it is judged that there is water leakage.
Preferably, the flexible water leakage detection device is made of a flexible material, wherein:
the first insulating layer and the fifth insulating layer are made of insulating and hydrophobic coating materials or polyethylene film materials;
the second conducting layer and the fourth conducting layer are made of copper foil, aluminum foil or silver foil conducting material and are of electrode structures formed by meshed metal sheets;
the third water absorption layer has the functions of absorbing water drops, evaporating water and insulating heat.
Preferably, the main control module can be connected with a plurality of flexible water drop detection devices through input ports;
the main control module is connected with an alarm device and a server.
The invention has the beneficial technical effects that:
1. this flexible water droplet detection device adopts flexible material can detect the seepage in the space that originally is difficult to implement the detection, like the water seepage in secret places such as air conditioner drain pipe leak, roof.
2. The flexible water drop detection device has the characteristics of lightness, thinness and small volume, and can be used for water seepage and water inflow detection of electronic equipment such as mobile phones, batteries, automobile engines and the like.
3. The flexible water leakage detection device is connected with the main control module, periodic automatic real-time uninterrupted water leakage detection is carried out through the main control module, a large amount of labor cost is not required, and the probability of errors in the detection process is reduced.
4. The device has high sensitivity, and can accurately detect the leakage of water with the volume as small as 0.001 ml.
5. The flexible water leakage detection device has a certain water absorption function, the water absorption speed is high, the influence of water leakage on the surrounding environment and equipment can be reduced, and the natural water absorption is 0.05 ml/square centimeter. The flexible device can improve the water absorbing and storing capacity by increasing the thickness of the water absorbing layer or folding the device to increase the water absorbing area and the like.
Drawings
Fig. 1 is a schematic side view of a flexible water drop detection device according to the present invention;
fig. 2 is a schematic structural view of a main surface of the flexible water drop detection device of the present invention;
fig. 3 is a schematic view of the overall structure of the flexible water drop detection device of the present invention;
FIG. 4 is a circuit diagram of a voltage sampling circuit according to the present invention;
FIG. 5 is a schematic circuit diagram of an intelligent flexible water droplet detection device for a flexible multi-application scenario in accordance with the present invention;
FIG. 6 is a process flow diagram of the control module of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments, but the scope of the present invention is not limited to the following embodiments.
As shown in fig. 1 to 4, an intelligent flexible water droplet detection device for flexible multi-application scenarios includes a flexible water droplet detection device 1 and a main control module, wherein:
the flexible water drop detection device comprises a five-layer composite material, the thickness of the five-layer composite material is smaller than 0.5mm, the five-layer composite material is flexible and used for quickly absorbing water, and the water leakage is judged by utilizing the conductivity change before and after water absorption. Because of the flexible characteristic, the flexible water drop detection device can collect water drops in a winding (straight pipe, bent pipe), coating (closed container, irregular container), blocking (floor and roof) and other modes according to the shape of an object to be detected when in use, and the detection range can be cut according to requirements.
The five layers of composite materials are a first insulating layer 11, a second conducting layer 12, a third water absorption layer 13, a fourth conducting layer 14 and a fifth insulating layer 15 from top to bottom in sequence; the first insulating layer 11, the second conducting layer 12, the fourth conducting layer 14 and the fifth insulating layer 15 are permeable layers, the permeable layers are all provided with small holes 16 which are uniformly distributed, the diameter of each small hole 16 is 1.5-3m, preferably 1-2mm, and the small holes in the embodiment are directly 2mm for permeable water. By using the siphon principle, water drops enter the third water absorption layer 13 through the small holes of the two layers 11 and 12 or the two layers 14 and 15.
The 11 and 15 permeable layers are insulated from the conductive metal of the second conductive layer 12 and the fourth conductive layer 14 under the dry condition, and at the moment, the 11 to 15 permeable layers are all in an insulated state; and after absorbing water, the 13 permeable layer has certain conductivity, the five layers of composite materials form an integral conductor R1, the conductor R1 is connected to the main control module through a lead between the second conducting layer 12 and the fourth conducting layer 14, and the main control module can judge whether water drops permeate or not by indirectly detecting the resistance change of the conductor R1, so that whether water leakage exists or not can be judged.
Specifically, the five-layer composite material comprises the following specific components: the first insulating layer 11 and the fifth insulating layer 15 are made of insulating hydrophobic coating materials or polyethylene film materials;
the second conductive layer 12 and the fourth conductive layer 14 are made of copper foil, aluminum foil or silver foil conductive material and are in an electrode structure formed by meshed metal sheets; the third water-absorbing layer 13 has functions of absorbing water droplets, evaporating moisture, and insulating heat.
The second conducting layer 12 and the fourth conducting layer 14 are both provided with conducting wires, the five layers of composite materials are matched to form a water drop detection device R1, the water drop detection device R1 is non-conductive when being dried, conductive after absorbing water, and the conductivity after absorbing water is in direct proportion to the water absorption amount within a certain range; two electrodes of a water drop detection device resistor R1 are respectively connected with a power supply Ui and a voltage division resistor R2; the other end of the voltage dividing resistor R2 is grounded; the power supply Ui, the resistor R1 and the resistor R2 form a sampling circuit, and voltage at two ends is sampled through resistance value change of the resistor R2, so that whether water leaks or not is judged.
Specifically, the voltage dividing resistor R2 is connected to an input port of the main control module through a cable; the main control module samples the analog voltage of the input port at intervals of T (the sampling time T can be taken within 0.05-3600 seconds, so that the T is recommended to be taken for 0.1 second for the water leakage detection of the electronic equipment so as to quickly start a water leakage protection program, and the T is taken for 1-3600 seconds for other occasions with high water leakage tolerance according to the power supply capacity and the application scene requirements), and judges whether water leakage exists or not according to the size of the obtained sampling voltage value U0.
The voltage U0 output from the voltage dividing resistor R2 is Ui (R2/(R1+ R2)), and when Ui and R2 are fixed, it is inversely proportional to R1. The main control module comprises an MCU, and the MCU adopts an ESP8266 chip. The maximum analog port input voltage value of the ESP8266 chip is 3.3V, and the analog port voltage resolution is 0.00323V.
The critical value of the water absorption and conduction of the water drop detection device resistor R1 is 0.004ml, when the water absorption amount of the flexible water drop detection device is equal to 0.004ml, the water drop detection device resistor R1 is conductive and the resistance value is 1200K ohm, and at the moment, U0 is 1.5V. The critical value of the water saturation of the water drop detection device resistor R1 is 0.02ml, when the water absorption capacity of the flexible water drop detection device is more than or equal to 0.02ml, the resistance value of the water drop detection device resistor R1 is 500K ohm, and at the moment, U0 is 3.1V.
Preferably, the voltage value U0 detected by the main control module is 3.3 × a/1023, and according to the relationship between the water absorption amount and the output voltage of the sampling resistor, when U0 is less than 1.5V, it can be determined that there is no water leakage, and when U0 is greater than 1.5V, it is determined that there is water leakage. The specific basis for judging the water leakage is as follows:
the ESP8266 chip has the characteristics that: an industry-leading Tensilica L106 ultra-low power consumption 32-bit micro MCU is integrated in a small-size package, a 16-bit simplified mode is adopted, the main frequency supports 80MHz and 160MHz, an RTOS is supported, and a Wi-Fi MAC/BB/RF/PA/LNA and an onboard antenna are integrated. And the standard IEEE802.11b/g/n protocol and a complete TCP/IP protocol stack are supported. Users can use the module to add networking functions to existing equipment and can also build an independent network controller. ESP8266 is a high performance wireless SOC that offers maximum utility at the lowest cost, providing an unlimited potential for WiFi functionality to be embedded in other systems.
When the flexible water drop detection device has water infiltration, the third water absorption layer 3 changes from an insulating state to a conductive state. The electric rate is related to the water absorption capacity, the larger the water absorption capacity is, the higher the electric conductivity is, through experiments, the detection sensitivity of the water amount is 0.004ml, when the water absorbing material absorbs 0.004ml of water, the electric conductivity of the water absorbing material has obvious change, and at the moment, the resistance of the water drop detection device is measured to be 1200K ohm.
The resistance R1 of the drop detection device decreased with increasing water uptake, and finally decreased to 500K ohms when the water uptake reached 0.02ml, after which the resistance of the device did not change significantly with increasing water uptake.
Based on experimental data and a circuit principle, a divider resistor R2 in a voltage sampling circuit takes 1000K ohms, a power supply Ui takes 5V, when the flexible water drop detection device sucks 0.004ml of water, a resistor R1 of a water drop detection device takes 1200K ohms, a U0 value is calculated to be 1.5V according to the above calculation formula, and then the U0 value is gradually increased along with the increase of the sucked water until the voltage reaches 3.1V. The sampling voltage U0 is accessed to the MCU through the analog input port of the MCU, the MCU samples the analog voltage of the input port at regular intervals, the maximum analog port input voltage value of the MCU chip ESP8266 is 3.3V, the analog port voltage resolution is 0.00323V, namely when the port input voltage is between 0.01V and 3.3V, the ports can be detected.
The flexible water drop detection device reads a sampling value A of an analog port through a program, wherein A is a number between 0 and 1023, a sampling voltage value is sampled by a main control module, analog-to-digital conversion is carried out on the sampling voltage in the main control module and is converted into a specific value A to be displayed (an MCU maps a voltage input signal of 0-3.3V to the value between 0 and 1023 through a 10-bit digital-to-analog conversion channel, namely the sampling value A is a number between 0 and 1023 when the input voltage is between 0 and 3.3V, the input voltage and the value A are in a linear relation), the relation between the sampling voltage U0 and the sampling value A is that U0 is 3.3A/1023, the detected voltage value can be obtained through A, and whether water leakage exists or not is judged according to the size of U0. According to the formulas U0 ═ 3.3 × a/1023 and U0 ═ U1 ═ R2/(R1+ R2)), it can be determined that there is no water leakage when U0 is less than 1.5V, and that there is water leakage when U0 is greater than 1.5V. Therefore, the water absorption capacity (water absorption capacity range of 0.004ml to 0.02ml) was determined from the voltage value.
The water droplet size, the applied voltage change and the judgment results are shown in the following table:
TABLE 1
The flexible water drop detection device is connected with the main control module through the conducting wires of the second conducting layer and the fourth conducting layer, the main control module can be connected with a plurality of flexible water drop detection devices in parallel, and the ESP8266 is adopted in the embodiment to be connected with 12 flexible water drop detection devices.
The main control module circularly monitors the voltage sampling numerical value of each flexible water drop detection device port, judges the water leakage condition, triggers onboard acousto-optic alarm, and simultaneously saves the monitoring result in the cloud server through the WiFi network. The frequency of voltage sampling of the main control module can be flexibly set according to requirements, the voltage sampling frequency is related to the power supply parameters of the device, the average power consumption of the device for sampling and uploading data is 100MA, the device can enter a sleep state after sampling, the power consumption is 80 muA, if a power line is adopted for supplying power, the power consumption can not be considered, and the sampling frequency is as high as 1 HZ; if the sampling battery is used for power supply, the capacity, the detection timeliness and the battery replacement (or charging) frequency of the battery are considered, the sampling time interval can be in hours, if sampling is carried out once per hour, 15 seconds are consumed before and after sampling MCU operation every time, 0.5mAH is consumed per hour, and 12mAH is consumed per day. If the selected battery capacity is 10000mAH, theoretically, the battery can persist for 833 days; if the battery capacity is 5000mAH, the battery can persist for 416 days in theory; if the battery capacity is 2000mAH, the battery can theoretically last for 166 days.
The device is powered by the lithium battery and has an electric quantity warning function.
For the purpose of realizing cloud control, the server is arranged at the cloud end, and when the following conditions occur, data can be actively collected and the monitoring terminal and the set contact persons can be informed through short messages, WeChat, mails and other modes:
1. a voltage state change of a certain flexible water drop detection device;
2. when the cloud receives a control instruction sent by the Web, data acquisition is triggered (the data acquisition can be controlled by a mobile phone App or WeChat).
In addition, the MCU of the main control module can adopt other programmable microprocessors. Other electronic circuit modes can be adopted to carry out voltage acquisition and acousto-optic alarm to replace the corresponding functions of the MCU.
1. This flexible water droplet detection device adopts flexible material can detect the seepage in the space that originally is difficult to implement the detection, like the water seepage in secret places such as air conditioner drain pipe leak, roof.
2. The flexible water drop detection device has the characteristics of lightness, thinness and small volume, and can be used for water seepage and water inflow detection of electronic equipment such as mobile phones, batteries, automobile engines and the like.
3. The flexible water drop detection device is connected with the main control module, periodic automatic real-time uninterrupted water leakage detection is carried out through the main control module, a large amount of labor cost is not required, and the probability of errors in the detection process is reduced.
4. The device has high sensitivity, and can accurately detect the leakage of water with the volume as small as 0.001 ml.
5. The flexible water drop detection device has a certain water absorption function, the water absorption speed is high, the influence of water leakage on surrounding environment equipment can be reduced, and the natural water absorption is 0.05 ml/square centimeter. The flexible device can improve the water absorbing and storing capacity by increasing the thickness of the water absorbing layer or folding the device to enlarge the area and the like.
6. The absorption layer of the flexible water drop detection device has a certain heat preservation and heat insulation function, and the electrode layer has a certain heat radiation reflection capacity and can be used as a water leakage detection and heat insulation protection layer of a container.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. The utility model provides a flexible water droplet detection device of intelligence of flexible multi-application scene, its characterized in that includes flexible water droplet detection device and host system, wherein:
the flexible water drop detection device comprises five layers of composite materials, wherein the five layers of composite materials are a first insulating layer, a second conducting layer, a third water absorption layer, a fourth conducting layer and a fifth insulating layer from top to bottom in sequence; uniformly distributed small holes are formed in the first insulating layer, the second conducting layer, the fourth conducting layer and the fifth insulating layer, and the diameter of each small hole is 1-2 mm;
the second conducting layer and the fourth conducting layer are both provided with conducting wires, after water drops are absorbed, the five layers of composite materials are matched to form a water drop detection device R1, and the conductivity of the water drop detection device changes along with the change of water absorption capacity;
two electrodes of the water drop detection device R1 are respectively connected with a power supply Ui and a divider resistor R2 with fixed resistance; the other end of the voltage dividing resistor R2 is grounded, when the water drop detection device R1 is not conductive, the circuit is not conducted, the voltage value U0 of R2 is 0, and when the water drop detection device R1 is conductive, the voltage value U0 of R2 gradually increases along with the decrease of R1;
the divider resistor R2 is connected with an input analog port of the main control module through a cable; the main control module samples the analog voltage input into the analog port at intervals of time T to obtain a value A, obtains a voltage value U0 of a voltage dividing resistor R2 through a formula U0-3.3A/1023, and judges whether water drops permeate or not through the size of the sampled voltage value A.
2. The intelligent flexible water drop detection device for the flexible multi-application scene as claimed in claim 1, wherein the voltage divider resistor R2 outputs a voltage U0 ═ Ui (R2/(R1+ R2)).
3. The device for detecting the flexible water drops in the flexible multi-application scene as claimed in claim 2, wherein the main control module comprises an MCU, and the MCU employs an ESP8266 chip.
4. The intelligent flexible water drop detection device of flexible multi-application scene as claimed in claim 3, characterized in that: the maximum analog port input voltage value of the ESP8266 chip is 3.3V, and the analog port voltage resolution is 0.00323V.
5. The intelligent flexible water drop detection device with the flexible multi-application scene as claimed in claim 2, wherein the critical value of the water drop detection device resistance R1 for conducting and absorbing water is 0.004ml, when the water absorption capacity of the flexible water drop detection device is equal to 0.004ml, the water drop detection device resistance R1 is conducting and the resistance value is 1200K ohms, and at this time, U0 is 1.5V.
6. The intelligent flexible water drop detection device with multiple flexible application scenes as claimed in claim 2, wherein the critical value of the water drop detection device resistor R1 for water saturation is 0.02ml, and when the water absorption capacity of the flexible water drop detection device is more than or equal to 0.02ml, the resistance value of the water drop detection device resistor R1 is 500K ohms, and when U0 is 3.1V.
7. The device as claimed in claim 5 or 6, wherein when the U0 is less than 1.5V, it is determined that no water drop is detected, and when the U0 is greater than 1.5V, it is determined that water drop is permeated.
8. The intelligent flexible water drop detection device for the flexible multi-application scene as claimed in claim 5 or 6, wherein the flexible water drop detection device is made of flexible material, wherein:
the first insulating layer and the fifth insulating layer are made of insulating and hydrophobic coating materials or polyethylene film materials;
the second conducting layer and the fourth conducting layer are made of copper foil, aluminum foil or silver foil conducting material and are of electrode structures formed by meshed metal sheets;
the third water absorption layer has the functions of absorbing water drops, evaporating water and insulating heat.
9. The intelligent flexible water drop detection device for the flexible multi-application scene as claimed in claim 1, wherein said main control module is provided with input analog ports, and each input analog port can be connected with 1 said flexible water drop detection device.
10. The intelligent flexible water drop detection device of the flexible multi-application scene as claimed in claim 1, wherein the master control module is connected with an alarm device and a server.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110708602.2A CN113432800A (en) | 2021-06-25 | 2021-06-25 | Flexible water droplet detection device of intelligence of flexible multi-application scene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110708602.2A CN113432800A (en) | 2021-06-25 | 2021-06-25 | Flexible water droplet detection device of intelligence of flexible multi-application scene |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113432800A true CN113432800A (en) | 2021-09-24 |
Family
ID=77754334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110708602.2A Pending CN113432800A (en) | 2021-06-25 | 2021-06-25 | Flexible water droplet detection device of intelligence of flexible multi-application scene |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113432800A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114184328A (en) * | 2021-10-29 | 2022-03-15 | 苏州浪潮智能科技有限公司 | Server liquid cooling pipe weeping detection device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207991719U (en) * | 2018-01-08 | 2018-10-19 | 成都柔电云科科技有限公司 | A kind of safety detecting system for automotive seat |
| CN109100087A (en) * | 2018-09-29 | 2018-12-28 | 安徽中鼎密封件股份有限公司 | A kind of sealing performance test sensor, sealing ring tightness energy test device to be measured |
| CN110763405A (en) * | 2019-12-05 | 2020-02-07 | 深圳鳍源科技有限公司 | Water leakage detection device |
| CN111896452A (en) * | 2020-07-24 | 2020-11-06 | 国网江苏省电力有限公司常州供电分公司 | Power distribution station wall infiltration monitoring devices |
| CN212844903U (en) * | 2020-07-24 | 2021-03-30 | 国网江苏省电力有限公司常州供电分公司 | Power distribution station wall infiltration monitoring devices |
-
2021
- 2021-06-25 CN CN202110708602.2A patent/CN113432800A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207991719U (en) * | 2018-01-08 | 2018-10-19 | 成都柔电云科科技有限公司 | A kind of safety detecting system for automotive seat |
| CN109100087A (en) * | 2018-09-29 | 2018-12-28 | 安徽中鼎密封件股份有限公司 | A kind of sealing performance test sensor, sealing ring tightness energy test device to be measured |
| CN110763405A (en) * | 2019-12-05 | 2020-02-07 | 深圳鳍源科技有限公司 | Water leakage detection device |
| CN111896452A (en) * | 2020-07-24 | 2020-11-06 | 国网江苏省电力有限公司常州供电分公司 | Power distribution station wall infiltration monitoring devices |
| CN212844903U (en) * | 2020-07-24 | 2021-03-30 | 国网江苏省电力有限公司常州供电分公司 | Power distribution station wall infiltration monitoring devices |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114184328A (en) * | 2021-10-29 | 2022-03-15 | 苏州浪潮智能科技有限公司 | Server liquid cooling pipe weeping detection device |
| CN114184328B (en) * | 2021-10-29 | 2024-02-09 | 苏州浪潮智能科技有限公司 | Liquid leakage detection device for liquid-cooled tube of server |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205680235U (en) | Big-dipper satellite fire detection terminal and system | |
| CN103235621B (en) | Mist-preventing intelligent control system for cabinet | |
| CN113432800A (en) | Flexible water droplet detection device of intelligence of flexible multi-application scene | |
| CN207765547U (en) | A kind of conducting liquid battery and its leak detecting device | |
| US10317356B2 (en) | Copper(II) oxide and cellulose acetate composite resistance-based humidity sensor | |
| CN111735096A (en) | Heating floor and heating control system and method thereof | |
| Wang et al. | Design of a smart independent smoke sense system based on NB-IoT technology | |
| CN204168004U (en) | A kind of power grid security risk monitoring and control system | |
| CN106706086A (en) | Ultra-high voltage transmission line on-line monitoring system | |
| CN105159189A (en) | Control device of power transmission line insulator string detection robots | |
| CN105045173A (en) | Substation outdoor terminal box intelligent control system | |
| CN205563332U (en) | Capacitor chamber supervisor system of temperature and humidity with long -range radio communication function | |
| CN108334020A (en) | A kind of rotating ring monitoring system of comprehensive improvement informationization | |
| CN207263241U (en) | Gas intelligent Turbine Flowmeter | |
| CN216116579U (en) | Water immersion detection system of container type electrochemical energy storage power station | |
| CN115631950A (en) | Pseudo-capacitance-based super capacitor diode and preparation method thereof | |
| CN207198597U (en) | A kind of subway environmental parameter monitor instrument and monitoring system | |
| CN208125942U (en) | A kind of Automatic meteorology monitoring disaster early warning system | |
| CN207181387U (en) | A kind of low-consumption wireless combustible gas probe | |
| CN106908188A (en) | A kind of GIS air pressure inside supervising devices based on temperature sensor | |
| CN203366113U (en) | Wireless remote control device for RTV coating hydrophobicity detection based on wireless control technology | |
| CN217060145U (en) | Wireless industrial gas detector | |
| CN202013344U (en) | Thermal conductivity detector | |
| CN206563617U (en) | A kind of batteries of electric automobile temperature measuring equipment | |
| CN206725703U (en) | A kind of high frequency sensors for the GIS partial discharge on-line monitoring being wirelessly transferred |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |