Internet of Things water meter with function of analyzing abnormal state of water consumption

Abstract

The invention discloses an Internet of Things water meter with a water consumption abnormal state analysis function, and relates to the technical field of water consumption management, the Internet of Things water meter comprises a digital dial plate and a meter head, and the meter head is internally provided with a water flow sensor. According to the system, data are collected and transmitted in real time through the water flow sensor and the water pressure sensor, historical water consumption data are stored through the mobile phone APP, a user portrait is established, current data are analyzed in a corresponding time period in combination with the portrait to classify alarm reasons and give an alarm, and alarm signals of the alarm mechanism and the mobile phone APP are corrected. Accurate and intelligent monitoring and alarming of the abnormal state of the industrial water consumption are achieved, meanwhile, enterprise management personnel can be reasonably reminded to arrange a water consumption production line according to monitoring data, the problems that peak water consumption pressure supply is insufficient and the like are avoided, water consumption safety guarantee and management efficiency are effectively improved, water resource waste and water consumption abnormal risks are reduced, and the economic benefits of enterprises are improved. And the economic benefits of enterprises are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of water use management, and in particular to an Internet of Things water meter with a function of analyzing abnormal water consumption status. Background Art

[0002] In society, water resources are mainly used in two areas: industrial water and civil water. Industrial water is used in industrial production processes, including raw material processing, product manufacturing, equipment cooling and many other links. Its water use may be continuous and large-flow. For example, pulping and papermaking processes in paper mills require a large amount of water for fiber dispersion, washing and transportation. Insufficient water may lead to a decrease in quality indicators such as paper uniformity and strength; the dissolution of dyes, dyeing and washing of fabrics in printing and dyeing factories require a large amount of water. Changes in water volume will affect the concentration of dye liquor, dyeing uniformity and washing effect, and thus affect the quality indicators of fabric color accuracy, color fastness and feel; in electroplating plants, the electroplating process depends on electroplating solutions of specific composition and concentration. Changes in water volume will directly change the concentration of the plating solution, thus affecting the electroplating effect.

[0003] In summary, these companies all attach great importance to water resource monitoring, because abnormal water volume will directly lead to product quality problems. Industrial water meters play a good regulatory role in water resources. Multiple workshops in the factory need to monitor water usage. Each workshop’s water inlet is equipped with an independent water meter to measure the water consumption in each workshop or area. These water meters are generally set in independent instrument rooms, and relevant personnel are arranged to conduct regular inspections to ensure the normal operation of the factory.

[0004] In the enterprise planning, the water production line is arranged according to the inter-factory operation, forming a peak water use period and a base water use period, among which the base water use period is mostly between 2 and 4 o'clock in the evening. During the peak water use stage, due to the sharp increase in water consumption, the pressure on the water supply system is dispersed and diluted, making it difficult to ensure that each water use link can obtain a stable and sufficient water pressure supply, which in turn affects the smoothness of the production process. During the base water use period, due to omissions and deficiencies in the management of enterprises, unnecessary waste of water resources often occurs. In the existing technology, the water meter fails to fully consider and accurately set the appropriate regulatory data range based on the actual water use habits of the enterprise, and it is also impossible to make scientific and reasonable dynamic adjustments to the enterprise's water use plan based on the actual operating conditions in the waterway. This not only greatly reduces the production efficiency between factories, but also causes a significant increase in the economic cost of the enterprise invisibly. Summary of the invention

[0005] The purpose of the present invention is to provide an Internet of Things water meter with the function of analyzing abnormal water consumption to solve the problems raised by the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an Internet of Things water meter with a function of analyzing abnormal water consumption, comprising a digital dial and a meter head, a water flow sensor is arranged inside the meter head, the water flow sensor is used to monitor the water consumption in the water pipe, one end of the water flow sensor is connected to a round tube, a water pressure sensor is installed inside the round tube, the other end of the water flow sensor is connected to a conical tube, an alarm mechanism is also arranged inside the meter head, the two ends of the alarm mechanism are respectively installed on the side walls of different pipe diameters of the conical tube and the flow velocity difference formed by the water flow at the two places is used to form a static pressure difference at the two ends of the alarm mechanism, and the alarm is monitored by setting a static pressure difference threshold inside the alarm mechanism; The analysis process of abnormal water consumption is as follows: Step 1: Data collection and transmission: The water flow sensor measures the water flow data in real time, and the water pressure sensor measures the water pressure data in real time. The data is converted into digital signals and stored in the cache module, and the wireless communication module is used to send the data to the mobile phone APP; Step 2: Data processing and user profile creation: The mobile app locally stores the user's historical water use data, and uses the built-in data analysis algorithm to create a user profile for the water use habit model, recording the user's data during peak water use time periods and base time periods; Step 3. Analyze abnormal data and display alarms: Analyze the current collected data in the corresponding time period, perform calculations based on the data model of the user portrait, classify the alarm causes based on the results, and issue an alarm.

[0007] Preferably, the digital dial includes a PCB board, a display screen, a buzzer, an STM32 chip, a card reader and a WIFI chip are installed on the surface of the PCB board, and a power socket, a flow meter interface and a valve control interface are also provided on one side of the PCB board. The digital dial is connected to an external power supply through the power socket, and the meter head is connected to the STM32 chip signal through the flow meter interface.

[0008] Preferably, one end of the circular tube is connected to a main water inlet valve, and the main water inlet valve is connected to the STM32 chip signal through a valve control interface, the bottom end of the PCB board is fixedly connected to a dial shell, the top end of the dial shell is rotatably connected to a dial cover, and the side wall of the dial shell is provided with an electromagnetic lock, and the dial shell controls the opening and closing of the dial cover through the electromagnetic lock.

[0009] Preferably, a water use analysis system is set inside the STM32 chip, including a clock module, a cache module, a valve control module and a wireless communication module. The system built-in time of the STM32 chip is periodically networked and proofread by a WIFI chip to realize the clock module function. The STM32 chip stores water use information through the RAM of the register to realize the cache module function. The valve control interface controls the actuator work of the water inlet main valve to realize the valve control module function. The STM32 chip is networked and communicated through the WIFI chip to realize the wireless communication module function.

[0010] Preferably, a vibration sensor is installed on the outer wall of the water flow sensor.

[0011] Preferably, the alarm mechanism includes a liquid differential component, a magnetic control component and an alarm component, the liquid differential component includes two capillary branches, one of the capillary branches is connected to the circular tube and is movably connected to the magnetic control component, the other capillary branch is connected to the conical tube and is movably connected to the alarm component, the two capillary branches are connected by a flaring tube, floats are arranged inside the pipes of the two capillary branches, an air intake valve is installed at the top of the flaring tube, and the internal air pressure of the flaring tube is controlled by the air intake valve.

[0012] Preferably, the magnetic control component includes an annular magnet 1, an annular magnet 2 and a linear bearing 1, the linear bearing 1 slides vertically on the outer wall of the capillary branch, the annular magnet 1 is arranged inside the capillary branch and sits on the surface of the float, the annular magnet 2 is embedded in the linear bearing 1 and moves synchronously with the annular magnet 1 through magnetic attraction, the outer wall of the linear bearing 1 is fixedly connected with a cantilever arm, and the linear bearing 1 is fixedly connected to the alarm component through the cantilever arm.

[0013] Preferably, the alarm component includes a linear bearing 2, a contact switch, an annular magnet 3 and an annular magnet 4, the annular magnet 4 is arranged inside the capillary branch and sits on the surface of the float, the linear bearing 2 slides vertically on the outer wall of the capillary branch, the annular magnet 3 is embedded in the interior of the linear bearing 2 and repelled by the annular magnet 4 through magnetic repulsion, and a contact switch is provided at the bottom end of the annular magnet 3, and an alarm signal is emitted after the contact switch contacts the annular magnet 3.

[0014] Preferably, in step three, the alarm signals of the alarm mechanism and the mobile phone APP are checked, and a self-check alarm is issued when the alarm signals of the alarm mechanism and the mobile phone APP are inconsistent.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the present invention, the water meter body adopts a design of separate meter head and digital dial, and the water meter supervision adopts a design of coordinated action of device alarm and mobile phone APP alarm. Data is collected and transmitted in real time through water flow sensor and water pressure sensor, and mobile phone APP is used to store historical water use data and establish user portraits. In the corresponding time period, the current data is analyzed in combination with the portrait to classify the alarm cause and issue an alarm, and the alarm mechanism and the alarm signal of the mobile phone APP are proofread, thereby realizing accurate and intelligent monitoring and alarm of abnormal industrial water consumption. At the same time, based on the monitoring data, it can reasonably remind enterprise managers to arrange water production lines to avoid problems such as insufficient peak water supply pressure, effectively improve water safety and management efficiency, reduce water resource waste and abnormal water use risks, and improve the economic benefits of the enterprise.

[0017] 2. In the present invention, when a water flow sensor is used to measure the water flow of a water meter, an alarm mechanism is added to the pipeline, and a flow velocity difference is generated by means of the difference in the diameter of the tapered tube, so that a hydraulic pressure difference is formed in the capillary branch. The liquid level is displayed by a float, and the position of the float is measured by the interaction of the annular magnet. When the hydraulic pressure difference exceeds the working distance of the annular magnet, the alarm condition is triggered and an excessive water flow warning is issued, thereby controlling the flow and preventing excessive waste of water resources.

[0018] 3. In the present invention, a U-shaped liquid differential component consisting of two capillary branches and a flared tube is used, and an air intake valve is set in the flared tube to flexibly adjust the internal air pressure. Enterprises can set the water flow alarm threshold according to their own water use habits, change the air pressure in the flared tube through the air intake valve, and change the liquid level difference caused by the static pressure difference under the same flow rate, so as to meet the specific needs of customers and expand the applicability of the alarm.

[0019] 4. In the present invention, the information interconnection between the water meter, the mobile phone APP and the manufacturer's network platform is realized by means of the WIFI chip. The manufacturer can monitor the water flow and remaining flow of the water meter through the manufacturer's network platform, and the water meter transmits device information and abnormal water use alarms to the mobile phone APP.

[0020] 5. In the present invention, two independent detection methods are used, namely a capillary branch for measuring the pressure difference of the tapered tube and a sensor for directly measuring the water flow rate. Each of them has the ability to detect and alarm, which improves the reliability and stability of the alarm, reduces the risk of missed reports, and can self-check and analyze the two alarm systems through the chip. When a certain detection method fails, the chip can determine and make the buzzer self-check and alarm, which is convenient for inspection personnel to deal with the fault in time, ensure the continuous and effective operation of the system, and reduce safety hazards and losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of an Internet of Things water meter with a function of analyzing abnormal water consumption status according to the present invention; Figure 2This is a schematic diagram of the internal structure of a digital dial in an Internet of Things water meter with a function of analyzing abnormal water consumption status according to the present invention; Figure 3 This is a front view of a PCB board in an Internet of Things water meter with a function of analyzing abnormal water consumption status according to the present invention; Figure 4 This is a schematic diagram of the internal structure of a meter head in an Internet of Things water meter with a function of analyzing abnormal water consumption status according to the present invention; Figure 5 It is a structural schematic diagram of a conical tube and an alarm mechanism in an Internet of Things water meter with a function of analyzing abnormal water consumption status according to the present invention; Figure 6 A half-section schematic diagram of the internal structure of a conical tube and an alarm mechanism in an Internet of Things water meter with a function of analyzing abnormal water consumption in the present invention; Figure 7 It is a front view of an alarm mechanism in an Internet of Things water meter having a function of analyzing abnormal water consumption status according to the present invention; Figure 8 This is a side view of the overall structure of an Internet of Things water meter with a function of analyzing abnormal water consumption status according to the present invention; Fig. 9 This is a schematic diagram of the overall structure and pipeline installation of an Internet of Things water meter with the function of analyzing abnormal water consumption in the present invention; Fig.10 This is an alarm principle diagram of an Internet of Things water meter with a function of analyzing abnormal water consumption according to the present invention; Fig.11 The system flow principle of the Internet of Things water meter with the function of analyzing abnormal water consumption in the present invention Figure 1 ; Fig.12 The system flow principle of the Internet of Things water meter with the function of analyzing abnormal water consumption in the present invention Figure 2 .

[0022] In the figure: 1. Digital dial; 11. PCB board; 111. Display screen; 112. Buzzer; 113. STM32 chip; 114. Card reader; 115. WIFI chip; 12. Power socket; 13. Flow meter interface; 14. Valve control interface; 15. Electromagnetic lock; 16. Dial case; 17. Dial cover; 2. Meter head; 21. Water flow sensor; 22. Water pressure sensor; 23. Vibration sensor; 3. Round tube; 4. Conical tube; 5. Main water inlet valve; 6. Alarm mechanism; 61. Liquid differential assembly; 611. Capillary branch; 612. Inlet valve; 613. Expanding tube; 614. Float; 62. Magnetron assembly; 621. Ring magnet one; 622. Ring magnet two; 623. Linear bearing one; 624. Suspended arm; 63. Alarm assembly; 631. Linear bearing two; 632. Contact switch; 633. Ring magnet three; 634. Ring magnet four. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Embodiment 1: According to Figure 1 - Fig.12As shown, a water use analysis system is set inside the STM32 chip 113, including a clock module, a cache module, a valve control module and a wireless communication module. The system built-in time of the STM32 chip 113 is periodically networked and proofread through the WIFI chip 115 to realize the clock module function. The STM32 chip 113 stores water use information through the RAM of the register to realize the cache module function. The valve control interface 14 controls the actuator of the water inlet main valve 5 to realize the valve control module function. The flow meter interface 13 transmits the monitoring information of the water flow sensor 21 to the STM32 chip 113 for processing, thereby monitoring the water flow. The flow meter interface 13 transmits the monitoring information of the water pressure sensor 22 to the STM32 chip 113 for processing, thereby monitoring the water pressure. The flow meter interface 13 transmits the monitoring information of the vibration sensor 23 to the STM32 chip 113 for processing, thereby monitoring the abnormal vibration of the water pipe. The STM32 chip 113 communicates online through the WIFI chip 115 to realize the wireless communication module function. The Internet of Things communication of the water meter is established through the WIFI chip 115, including the water meter, the mobile phone APP and the manufacturer's network platform; the water meter communicates with the mobile phone APP through the WIFI chip 115 to realize the clock module correction and synchronization function, and the mobile phone APP and the manufacturer's network platform establish a stable data transmission channel with the water meter through the WIFI chip 115 to ensure that the water consumption data can be transmitted from the water meter to the APP in a timely and accurate manner; Wireless communication is used to transmit information between water meters, mobile phone apps, and regional managers. When the water storage capacity of an enterprise is insufficient, the digital dial 1 issues an early warning, and the actuator of the water inlet main valve 5 (which can be an electromagnetic control valve) is controlled by the STM32 chip 113 to cut off the water source to remind payment. The mobile phone app can communicate wirelessly with a specific water meter and receive abnormal water use warnings. The water meter is mainly responsible for transmitting data externally, synchronizing time information with the mobile phone app, and remotely receiving control instructions from the manufacturer's network platform and mobile phone app.

[0025] The vibration sensor 23 is usually a piezoelectric ceramic sensor. When it is vibrated by external factors, the piezoelectric effect will cause charge changes at its two ends, thereby converting the vibration signal into an electrical signal. The amplitude, frequency and other characteristics of the electrical signal are related to factors such as the intensity and frequency of the vibration. The abnormality of the faucet valve core or the working vibration of household appliances can be detected by the vibration sensor 23 in time; when subjected to water pressure, the resistance of the semiconductor material (such as silicon wafer) inside the water pressure sensor 22 will change. This resistance change is in a certain proportional relationship with the water pressure. By measuring the change in resistance, the water pressure can be indirectly measured.

[0026] The analysis process of abnormal water consumption is as follows: 1) Data collection and transmission: The water flow sensor 21 measures the water flow data in real time, and the water pressure sensor 22 measures the water pressure data in real time. The data is converted into digital signals and stored in the cache module, and the wireless communication module is used to send the data to the mobile phone APP; 2) Data processing and user profile creation: The mobile app locally stores the user's historical water use data and uses the built-in data analysis algorithm to create a user profile for the water use habit model, recording the data for the peak water use period and base value period of the enterprise; 3) Analyze abnormal data and display alarms: Analyze the current collected data in the corresponding time period, perform calculations based on the data model of the user portrait, classify the alarm causes based on the results, and issue an alarm; 4) Self-check alarm of the equipment: Check the alarm signals of the alarm mechanism 6 and the mobile phone APP, and send out a self-check alarm when the alarm signals of the alarm mechanism 6 and the mobile phone APP conflict.

[0027] This embodiment is as follows: Data collection and transmission: The water meter has a built-in water flow sensor 21 and a water pressure sensor 22, and uses the STM32 chip 113 as a microcontroller. The water flow sensor 21 measures the water flow in real time and converts it into a digital signal. The STM32 chip 113 performs preliminary processing and storage on the data, such as recording the start and end time of water use, cumulative flow and other information.

[0028] The WIFI chip 115 allows the water meter to establish a WIFI connection and use the TCP (Transmission Control Protocol) or UDP (User Datagram Protocol) protocol to send the packaged data to the mobile phone APP. The water meter will first establish a reliable connection with the target device to ensure that the data can be transmitted completely and in an orderly manner. The mobile phone APP needs to open a network monitoring service on the mobile phone and set a specific port to receive the data from the water meter. When the mobile phone APP monitors the data sent by the water meter arriving at the port, it will read the data and parse it.

[0029] Mobile APP data processing and abnormal analysis: The mobile APP stores the historical water consumption data of the workshop locally, and uses built-in data analysis algorithms (such as simple statistical analysis methods or lightweight machine learning algorithms) to establish a user water consumption habit model. It records the time periods when the user's water consumption peak time period and base time period occur.

[0030] When the mobile phone APP receives new water usage data from the water meter, it immediately analyzes it locally using the established water usage habit model. The different reasons for abnormal water usage are: Water is used during the remaining water use period, that is, the time period with the smallest water flow in the cycle. Generally, the water consumption is zero. If the clock module detects that the water use time exceeds the normal range, the APP will determine it as an abnormal water use situation and display an alarm for water resource consumption in the APP.

[0031] During peak water usage, the water pressure sensor 22 detects that the water pressure in the main water supply pipeline is unstable, and the APP determines that it is an abnormal water usage situation. The APP displays an alarm of insufficient water pressure. The factory can stagger the time of peak water usage according to the production schedule to ensure the stability of pipeline water usage; When using the water base value, the vibration sensor 23 monitors the vibration in the water channel. If the vibration data exceeds the threshold, the alarm of abnormal pipeline vibration will be displayed in the APP to check for various vibration problems such as unstable water pressure, leakage resonance of the valve core, and air hammer caused by residual gas in the pipeline.

[0032] When monitoring and analyzing water leakage in the pipeline, the vibration sensor 23 analyzes the water use abnormality, collects the inherent vibration amplitude value of the pipeline, and checks the pipeline installation defects according to the vibration amplitude value. After the measurement module measures the inherent vibration amplitude of the pipeline, the vibration amplitude value of the pipeline at the peak water use is measured, combined with the water flow measured by the water flow measurement module, the vibration intensity of the pipeline caused by the water flow is calculated. When it exceeds the threshold, it is judged that the water use is abnormal and the cause of the fault is eliminated.

[0033] Alarm and abnormal cause display: Once the APP detects abnormal water usage, it will send an alarm to the user through the mobile phone's notification system, display the analysis results of the abnormal water usage in detail, and explain the possible causes of the abnormal situation to the user in easy-to-understand text and charts.

[0034] The above process can complete the wireless information communication between the water meter and the mobile phone APP. The mobile phone APP integrates and processes the data, analyzes the reasons for abnormal water use based on the user portraits recorded in previous data, and reminds on the mobile phone APP to realize the first-level alarm function, which is used to remind the water resources management personnel between factories of abnormal water use status.

[0035] Self-test alarm of the equipment: In the second-level alarm function, the pressure difference at two positions of the conical tube 4 is measured through two connected capillary branches 611. The resulting hydraulic pressure difference can trigger the contact switch 632, causing the buzzer 112 to alarm. In the first-level alarm function, the water flow rate is directly measured by the water flow sensor 21, and data analysis is performed based on the user portrait, thereby issuing an alarm for abnormal data. The two detection methods are independent of each other and can independently realize detection and alarm. The water flow alarm signal is fed back to the STM32 chip 113, and the STM32 chip 113 performs self-test analysis on the two sets of independent alarms. When one of the detection methods fails, the STM32 chip 113 makes a judgment and can control the buzzer 112 to self-test and alarm, so that the inspection personnel can find and deal with it in time.

[0036] Embodiment 2: According to Figure 1 - Fig.10As shown: an Internet of Things water meter with a function of analyzing abnormal water consumption, comprising a digital dial 1 and a meter head 2, a water flow sensor 21 is arranged inside the meter head 2, the water flow sensor 21 is used to monitor the water consumption in the water pipe, one end of the water flow sensor 21 is connected to a round pipe 3, and the other end of the water flow sensor 21 is connected to a conical pipe 4, an alarm mechanism 6 is also arranged inside the meter head 2, the two ends of the alarm mechanism 6 are respectively installed on the side walls of different pipe diameters of the conical pipe 4 and the flow velocity difference formed by the water flow at the two places is used to form a static pressure difference at the two ends of the alarm mechanism 6, and the alarm is monitored by setting a static pressure difference threshold inside the alarm mechanism 6; A water flow sensor 21 is arranged inside the meter head 2, and the water flow sensor 21 is installed in the pipe. A water pressure sensor 22 is installed inside the round tube 3, and a vibration sensor 23 is installed on the outer wall of the water flow sensor 21. The digital dial 1 includes a PCB board 11, and a display screen 111, a buzzer 112, an STM32 chip 113, a card reader 114, and a WIFI chip 115 are installed on the surface of the PCB board 11. A power socket 12, a flow meter interface 13, and a valve control interface 14 are also arranged on one side of the PCB board 11. The digital dial 1 is connected to an external power supply through the power socket 12, and the meter head 2 is connected to the STM32 chip 113 signal through the flow meter interface 13. One end of the round tube 3 is connected to a water inlet main valve 5, which is connected to the STM32 chip 113 signal through a valve control interface 14. The bottom end of the PCB board 11 is fixedly connected to a dial shell 16, and the top end of the dial shell 16 is rotatably connected to a dial cover 17. The side wall of the dial shell 16 is provided with an electromagnetic lock 15, and the dial shell 16 controls the opening and closing of the dial cover 17 through the electromagnetic lock 15; In this embodiment, the two ends of the water flow sensor 21 are respectively connected to a circular tube 3 with a constant diameter and directly connected to the water pipe, and a conical tube 4 with a tapered mouth in the middle section and gradually thickened to the same diameter as the circular tube 3 at both ends. One end of the liquid differential component 61 is connected to the tapered mouth, and the other end is connected to the thickest part of the conical tube 4. The Bernoulli principle of fluid mechanics is used to generate a water flow rate difference based on the diameter difference at two places of the conical tube 4, and the flow rate difference increases with the increase of water flow. The liquid differential component 61 can measure this flow rate value. The liquid differential component 61 is a sealed structure and internal air injection forms a high air pressure to resist the negative pressure of the water. The two ends of the liquid differential component 61 generate a liquid level difference due to the static pressure difference, which is similar to the working principle of the Venturi flowmeter. When the liquid level difference exceeds the set threshold, an alarm is triggered. The management personnel can adjust the alarm threshold as needed, that is, increasing the internal air pressure can reduce the flow rate alarm threshold, and reducing the internal air pressure can increase the flow rate alarm threshold; The display screen 111 is connected to the STM32 chip 113 signal, and can display parameters such as water pressure, water flow and total water consumption. The buzzer 112 is controlled by the contact switch 632, and triggers an alarm with the liquid level difference in the capillary tube 611. The card reader 114 is connected to the STM32 chip 113 signal to control the circuit on and off of the electromagnetic lock 15, thereby controlling the opening and closing of the dial cover 17.

[0037] Embodiment 3: According to Figure 6-Figure 10 As shown, the alarm mechanism 6 includes a liquid differential component 61, a magnetic control component 62 and an alarm component 63. The liquid differential component 61 includes two capillary branches 611, one of which is connected to the circular tube 3 and is movably connected to the magnetic control component 62, and the other capillary branch 611 is connected to the conical tube 4 and is movably connected to the alarm component 63. A flaring tube 613 is connected between the two capillary branches 611, and floats 614 are arranged inside the pipes of the two capillary branches 611. An air intake valve 612 is installed at the top of the flaring tube 613, and the internal air pressure is controlled by the air intake valve 612.

[0038] The magnetostriction assembly 62 includes an annular magnet 621, an annular magnet 622 and a linear bearing 623. The linear bearing 623 slides vertically on the outer wall of the capillary branch 611. The annular magnet 621 is arranged inside the capillary branch 611 and sits on the surface of the float 614. The annular magnet 622 is embedded in the linear bearing 623 and moves synchronously with the annular magnet 621 through magnetic attraction. The outer wall of the linear bearing 623 is fixedly connected with a suspended arm 624, and the linear bearing 623 is fixedly connected to the alarm assembly 63 through the suspended arm 624. The alarm component 63 includes a linear bearing 2 631, a contact switch 632, an annular magnet 3 633 and an annular magnet 4 634. The annular magnet 4 634 is arranged inside the capillary branch 611 and is seated on the surface of the float 614. The linear bearing 2 631 slides vertically on the outer wall of the capillary branch 611. The annular magnet 3 633 is embedded in the linear bearing 2 631 and is repelled by the annular magnet 4 634 through magnetic repulsion. The bottom end of the annular magnet 3 633 is provided with a contact switch 632. The contact switch 632 sends out an alarm signal after contacting the annular magnet 3 633.

[0039] In this embodiment, the liquid differential component 61 is a U-shaped tube consisting of capillary branches 611 at both ends and a flared tube 613 with a larger diameter in the middle, and the flared tube 613 can store more gas. Because the liquid differential component 61 is connected to the tapered tube 4, the pressure of water on the tube wall will cause part of the water to enter the capillary branch 611, and the gas in the flared tube 613 is used to balance the water pressure energy to maintain the water level balance. When there is no water use, the water pressure energy of the two capillary branches 611 is the same, and the liquid level height is consistent; when water is used, the water flow reduces the pressure energy, and the liquid level height of the two capillary branches 611 decreases. The capillary branch 611 at the cone mouth has a higher flow rate and a greater pressure reduction. The static pressure difference causes the two liquid levels to drop to different heights to produce a liquid level difference, and the greater the flow rate and flow rate, the greater the static pressure difference and the greater the liquid level difference.

[0040] The magnetic control component 62 and the alarm component 63 are respectively arranged on the outside of the capillary branch 611 connected to the thick and thin diameters of the tapered tube 4. Due to the pressure difference, the liquid level at the magnetic control component 62 is high, and the liquid level at the alarm component 63 is low and below. The annular magnet 1 621 and the annular magnet 4 634 on the two sides of the float 614 interact with each other, and drive the linear bearing 2 631 to move through the linear bearing 1 623 and the suspended arm 624. When the height difference between the linear bearing 2 631 and the annular magnet 4 634 exceeds the threshold, the magnetic repulsion force of the annular magnet 4 634 weakens the annular magnet 3 633, and the contact switch 632 is triggered; The contact switch 632 can change the circuit on-off state according to the change of mechanical pressure. When the ring magnet 3 633 does not press it, it is in a normally open circuit state, and the internal conductive parts are separated; when the ring magnet 3 633 contacts and presses it, the external force changes the internal mechanical structure, the conductive parts contact, and the circuit is connected to the buzzer alarm. After that, the current enters the buzzer alarm through the closed contact switch 632, first enters the oscillation circuit to generate an electrical signal that determines the tone, and generates an alarm sound through the oscillation, amplification and sounding process.

[0041] The above process can complete the alarm of the buzzer alarm in the water meter and realize the second-level alarm function. Personnel are arranged to conduct regular inspections in the instrument room between factories, so that the second-level sound and light alarm emitted by the water meter itself can be discovered in time, and corresponding measures can be taken in time to deal with abnormal conditions.

[0042] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An Internet of Things water meter with a function of analyzing abnormal water consumption, comprising a digital dial (1) and a meter head (2), wherein a water flow sensor (21) is arranged inside the meter head (2), and the water flow sensor (21) is used to monitor the water consumption in the water pipe, characterized in that: One end of the water flow sensor (21) is connected to a circular tube (3), a water pressure sensor (22) is installed inside the circular tube (3), the other end of the water flow sensor (21) is connected to a conical tube (4), an alarm mechanism (6) is also arranged inside the meter head (2), the two ends of the alarm mechanism (6) are respectively installed on the side walls of the conical tube (4) with different diameters, and a static pressure difference is formed at the two ends of the alarm mechanism (6) by using the flow velocity difference formed by the water flow at the two locations, and the static pressure difference threshold is set inside the alarm mechanism (6) to monitor and alarm; The analysis process of abnormal water consumption is as follows: S1. Collect water flow and water pressure data and transmit them to the mobile phone APP; S2, the transmitted digital signal is filtered and noise-reduced, stored locally, and a user profile of the water use habit model is established; S3. Analyze the currently collected data in the corresponding time period, perform calculations based on the data model of the user portrait, classify the alarm cause based on the results, and issue an alarm.

2. The IoT water meter with the function of analyzing abnormal water consumption according to claim 1, characterized in that: The digital dial (1) comprises a PCB board (11); a display screen (111), a buzzer (112), an STM32 chip (113), a card reader (114) and a WIFI chip (115) are mounted on the surface of the PCB board (11); a power socket (12), a flow meter interface (13) and a valve control interface (14) are also provided on one side of the PCB board (11); the digital dial (1) is connected to an external power supply via the power socket (12); and the meter head (2) is connected to the STM32 chip (113) signal via the flow meter interface (13).

3. The IoT water meter with the function of analyzing abnormal water consumption according to claim 2 is characterized in that: One end of the circular tube (3) is connected to a water inlet main valve (5), the water inlet main valve (5) is connected to an STM32 chip (113) by signal via a valve control interface (14), the bottom end of the PCB board (11) is fixedly connected to a dial case (16), the top end of the dial case (16) is rotatably connected to a dial cover (17), a side wall of the dial case (16) is provided with an electromagnetic lock (15), and the dial case (16) controls the opening and closing of the dial cover (17) via the electromagnetic lock (15).

4. The IoT water meter with the function of analyzing abnormal water consumption according to claim 2 is characterized in that: A water use analysis system is set inside the STM32 chip (113), comprising a clock module, a cache module, a valve control module and a wireless communication module. The system built-in time of the STM32 chip (113) is periodically networked and calibrated via a WIFI chip (115) to realize the function of the clock module. The STM32 chip (113) stores water use information via a register RAM to realize the function of the cache module. The valve control interface (14) controls the operation of an actuator of the water inlet main valve (5) to realize the function of the valve control module. The STM32 chip (113) communicates via the WIFI chip (115) to realize the function of the wireless communication module.

5. The IoT water meter with the function of analyzing abnormal water consumption according to claim 1, characterized in that: A vibration sensor (23) is installed on the outer wall of the water flow sensor (21).

6. The IoT water meter with the function of analyzing abnormal water consumption according to claim 1, characterized in that: The alarm mechanism (6) comprises a liquid differential component (61), a magnetic control component (62) and an alarm component (63). The liquid differential component (61) comprises two capillary branches (611), one of the capillary branches (611) is in communication with the circular tube (3) and is movably connected to the magnetic control component (62), the other capillary branch (611) is in communication with the conical tube (4) and is movably connected to the alarm component (63), an expansion tube (613) is in communication between the two capillary branches (611), a floating ball (614) is arranged inside the pipes of the two capillary branches (611), an air intake valve (612) is installed at the top end of the expansion tube (613), and the internal air pressure of the expansion tube (613) is controlled by the air intake valve (612).

7. The IoT water meter with the function of analyzing abnormal water consumption according to claim 6, characterized in that: The magnetic control component (62) comprises an annular magnet 1 (621), an annular magnet 2 (622) and a linear bearing 1 (623); the linear bearing 1 (623) slides vertically on the outer wall of the capillary branch (611); the annular magnet 1 (621) is arranged inside the capillary branch (611) and sits on the surface of the float (614); the annular magnet 2 (622) is embedded inside the linear bearing 1 (623) and moves synchronously with the annular magnet 1 (621) through magnetic attraction; the outer wall of the linear bearing 1 (623) is fixedly connected to a suspension arm (624); the linear bearing 1 (623) is fixedly connected to the alarm component (63) through the suspension arm (624).

8. The IoT water meter with the function of analyzing abnormal water consumption according to claim 7, characterized in that: The alarm component (63) comprises a second linear bearing (631), a contact switch (632), a third annular magnet (633) and a fourth annular magnet (634); the fourth annular magnet (634) is arranged inside the capillary branch (611) and is seated on the surface of the float (614); the second linear bearing (631) slides vertically on the outer wall of the capillary branch (611); the third annular magnet (633) is embedded inside the second linear bearing (631) and is repelled by the fourth annular magnet (634) through magnetic repulsion; the bottom end of the third annular magnet (633) is provided with a contact switch (632); and the contact switch (632) sends an alarm signal after contacting the third annular magnet (633).

9. The IoT water meter with the function of analyzing abnormal water consumption according to claim 8, characterized in that: In step S3, the alarm signal of the alarm mechanism (6) and the alarm signal of the mobile phone APP are checked, and a self-check alarm is issued when the alarm signal of the alarm mechanism (6) and the alarm signal of the mobile phone APP conflict.

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