An Internet of Things water meter with the function of analyzing abnormal water consumption status

Abstract

The present invention discloses an Internet of Things water meter with the function of analyzing abnormal water consumption states, which relates to the technical field of water use management and includes a digital dial and a meter head. Inside the meter head, a water flow sensor is provided. In the present invention, data is collected and transmitted in real time through the water flow sensor and the water pressure sensor. The mobile phone APP is used to store historical water use data and establish a user profile. The current data is analyzed in combination with the profile during the corresponding time period to classify the alarm reasons and send out alarms. The alarm signals of the alarm mechanism and the mobile phone APP are calibrated, realizing the accurate and intelligent monitoring and alarming of abnormal industrial water consumption states. At the same time, according to the monitoring data, enterprise management personnel can be reasonably reminded to arrange water use production lines, avoiding problems such as insufficient water supply pressure during peak water use, effectively improving the water use safety guarantee and management efficiency, reducing the risk of water resource waste and abnormal water use, and enhancing the economic benefits of the enterprise.

Description

Technical Field

[0001] The present invention relates to the technical field of water management, and specifically to an Internet of Things water meter with the function of analyzing abnormal water consumption states. Background Technique

[0002] In society, the utilization of water resources is mainly divided into two major fields: industrial water use and civil water use. Industrial water use is used in the industrial production process, including many links such as raw material processing, product manufacturing, and equipment cooling. Its water use method may be continuous and large-flow. For example, in the papermaking process of a paper mill, processes such as pulping and paper making require a large amount of water for fiber dispersion, washing, and transportation. Insufficient water volume may lead to a decline in quality indicators such as the evenness and strength of the paper; in a dyeing factory, the dissolution of dyes, fabric dyeing, and water washing all require a large amount of water. Changes in water volume will affect the concentration of the dye liquor, the uniformity of dyeing, and the effect of water washing, and further affect quality indicators such as the color accuracy, color fastness, and hand feeling of the fabric; in an electroplating factory, the electroplating process depends on an electroplating solution with specific components and concentrations. Changes in water volume will directly change the concentration of the plating solution, and further affect the electroplating effect.

[0003] In summary, these enterprises attach great importance to water resource monitoring because abnormal water volume will directly lead to product quality problems. Industrial water meters play a very good role in supervising water resources. Independent water meters are installed at the water inlets of multiple workshops in the factory to measure the water consumption in each workshop or area respectively. 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 use production line forms peak water use periods and base water use periods according to the factory operation arrangement. Among them, the base water use period is mostly in the interval from 2:00 to 4:00 at night. During the peak water use stage, due to the sharp rise in water consumption, the pressure borne by the water supply system is dispersed and thinned, making it difficult to ensure that each water use link can obtain stable and sufficient water pressure supply, thus affecting the smoothness of the production process. And during the base water use period, due to omissions and deficiencies in enterprise management, unnecessary waste of water resources often occurs. In the prior art, water meters do not fully consider and accurately set appropriate supervision data ranges according to the actual water use habits of enterprises, nor can they scientifically and reasonably dynamically adjust the water use plans of enterprises based on the actual operating conditions in the water pipeline. This not only greatly reduces the production efficiency of the factory, but also invisibly increases the economic costs of enterprises significantly. 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 states to solve the problems raised in the above background technique.

[0006] To achieve the above object, the present invention provides the following technical solution: An Internet of Things water meter with the function of analyzing abnormal water consumption states, including a digital dial and a meter head. A water flow sensor is arranged inside the meter head, and the water flow sensor is used to monitor the water consumption in the water pipe. One end of the water flow sensor is communicated with a round pipe, a water pressure sensor is installed inside the round pipe, and the other end of the water flow sensor is communicated with a conical pipe. 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 pipe, and the static pressure difference formed at both ends of the alarm mechanism is formed by using the flow velocity difference formed by the water flow at the two places. By setting a static pressure difference threshold inside the alarm mechanism to monitor and alarm;

[0007] The analysis process of abnormal water consumption states is as follows:

[0008] 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 data is sent to the mobile APP by using the wireless communication module;

[0009] Step 2: Data processing and user portrait establishment: The mobile APP locally stores the historical water consumption data of the user, and uses the built-in data analysis algorithm to establish a user portrait of the water consumption habit model, and records the data of the user's water consumption peak time period and base value time period;

[0010] Step 3: Analyze abnormal data and display alarm: Analyze the currently collected data in the corresponding time period, calculate by combining the data model of the user portrait, classify the alarm reasons according to the results and send out an alarm.

[0011] 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. A power socket, a flow meter interface and a valve control interface are also arranged 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 signal-connected to the STM32 chip through the flow meter interface.

[0012] Preferably, one end of the round pipe is connected with a main water inlet valve. The main water inlet valve is signal-connected to the STM32 chip through the valve control interface. The bottom end of the PCB board is fixedly connected with a dial case, the top end of the dial case is rotatably connected with a dial cover, and an electromagnetic lock is arranged on the side wall of the dial case. The dial case controls the opening and closing of the dial cover through the electromagnetic lock.

[0013] Preferably, a water 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 built-in system time of the STM32 chip is periodically calibrated by connecting to the network through the WIFI chip to realize the function of the clock module. The STM32 chip stores water usage information through the RAM of the register to realize the function of the cache module. The valve control interface controls the actuator of the main water inlet valve to realize the function of the valve control module. The STM32 chip conducts network communication through the WIFI chip to realize the function of the wireless communication module.

[0014] Preferably, a vibration sensor is installed on the outer wall of the water flow sensor.

[0015] Preferably, the alarm mechanism includes a liquid difference component, a magnetic control component, and an alarm component. The liquid difference 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. An expansion tube is connected between the two capillary branches. Floating balls are arranged inside the pipelines of the two capillary branches. An air inlet valve is installed at the top of the expansion tube, and the internal air pressure of the expansion tube is controlled through the air inlet valve.

[0016] Preferably, the magnetic control component includes a first annular magnet, a second annular magnet, and a first linear bearing. The first linear bearing slides vertically on the outer wall of the capillary branch. The first annular magnet is arranged inside the capillary branch and sits on the surface of the floating ball. The second annular magnet is embedded inside the first linear bearing and moves synchronously with the first annular magnet through magnetic attraction. A suspended arm is fixedly connected to the outer wall of the first linear bearing, and the first linear bearing is fixedly connected to the alarm component through the suspended arm.

[0017] Preferably, the alarm component includes a second linear bearing, a contact switch, a third annular magnet, and a fourth annular magnet. The fourth annular magnet is arranged inside the capillary branch and sits on the surface of the floating ball. The second linear bearing slides vertically on the outer wall of the capillary branch. The third annular magnet is embedded inside the second linear bearing and repels the fourth annular magnet through magnetic repulsion. A contact switch is arranged at the bottom end of the third annular magnet, and an alarm signal is emitted after the contact switch contacts the third annular magnet.

[0018] Preferably, in step three, the alarm signals of the alarm mechanism and the mobile phone APP are calibrated. When the alarm signals of the alarm mechanism and the mobile phone APP are inconsistent, a self-check alarm is issued.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. In the present invention, the water meter body adopts a design with the meter head separated from the digital dial. The supervision of the water meter adopts a design with the cooperation of device alarm and mobile phone APP alarm. Data is collected and transmitted in real time through the water flow sensor and the water pressure sensor. The mobile phone APP is used to store historical water usage data and establish a user profile. The current data is analyzed in combination with the profile during a corresponding time period to classify the alarm reasons and send out alarms. The alarm signals of the alarm mechanism and the mobile phone APP are calibrated, realizing precise and intelligent monitoring and alarm of abnormal industrial water usage states. At the same time, based on the monitoring data, it can reasonably remind enterprise managers to arrange water production lines, avoid problems such as insufficient water supply pressure during peak water usage, effectively improve the water usage safety guarantee and management efficiency, reduce water resource waste and the risk of abnormal water usage, and enhance the economic benefits of the enterprise.

[0021] 2. In the present invention, when measuring the water flow of the water meter using the water flow sensor, an alarm mechanism is added to its pipeline. By means of the flow velocity difference generated by the difference in the diameters of the conical pipes, a hydraulic pressure difference is formed in the capillary branch pipe. The liquid level height is displayed by the floating ball, and the position of the floating ball is measured by the interaction of the annular magnets. When the hydraulic pressure difference exceeds the action distance of the annular magnets, the alarm condition is triggered, and a warning of excessive water flow is sent out to control the flow and prevent excessive waste of water resources.

[0022] 3. In the present invention, a U-shaped liquid difference component composed of two capillary branch pipes and a flared pipe is used, and an air inlet valve is arranged on the flared pipe to flexibly adjust the internal air pressure. Enterprises can set the water flow alarm threshold according to their own water usage habits. By changing the air pressure in the flared pipe through the air inlet valve, the liquid level difference generated by the static pressure difference under the same flow rate is changed accordingly, so as to meet the specific needs of customers and broaden the applicability of the alarm.

[0023] 4. In the present invention, the information interconnection between the water meter, the mobile phone APP, and the manufacturer's network platform is realized with the help of the WIFI chip. The manufacturer can monitor the water flow and remaining flow of the water meter through the manufacturer's network platform. The water meter transmits device information and water usage abnormality alarms to the mobile phone APP.

[0024] 5. In the present invention, two independent detection means, namely the capillary branch pipe for measuring the conical pipe pressure difference and the sensor for directly measuring the water flow, are used. Each has the ability to detect and alarm, improving the reliability and stability of the alarm, reducing the risk of missed alarms, and the chip can self-check and analyze the two alarm systems. When a certain detection means fails, the chip can judge and make the buzzer self-check and alarm, facilitating the inspection personnel to handle the failure in time, ensuring the continuous and effective operation of the system, and reducing potential safety hazards and losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a three-dimensional structural schematic diagram of an Internet of Things water meter with the function of analyzing abnormal water usage states according to the present invention;

[0026] Figure 2Schematic diagram of the internal structure of the digital dial in an IoT water meter with the function of analyzing abnormal water consumption status according to the present invention;

[0027] Figure 3 Front view of the PCB board in an IoT water meter with the function of analyzing abnormal water consumption status according to the present invention;

[0028] Figure 4 Schematic diagram of the internal structure of the meter head in an IoT water meter with the function of analyzing abnormal water consumption status according to the present invention;

[0029] Figure 5 Schematic diagram of the structure of the conical tube and the alarm mechanism in an IoT water meter with the function of analyzing abnormal water consumption status according to the present invention;

[0030] Figure 6 Semi-sectional schematic diagram of the internal structure of the conical tube and the alarm mechanism in an IoT water meter with the function of analyzing abnormal water consumption status according to the present invention;

[0031] Figure 7 Front view of the alarm mechanism in an IoT water meter with the function of analyzing abnormal water consumption status according to the present invention;

[0032] Figure 8 Side view of the overall structure of an IoT water meter with the function of analyzing abnormal water consumption status according to the present invention;

[0033] Figure 9 Schematic diagram of the pipeline installation of the overall structure of an IoT water meter with the function of analyzing abnormal water consumption status according to the present invention;

[0034] Figure 10 Alarm schematic diagram of an IoT water meter with the function of analyzing abnormal water consumption status according to the present invention;

[0035] Figure 11 System flow principle of an IoT water meter with the function of analyzing abnormal water consumption status according to the present invention Figure 1 ;

[0036] Figure 12 System flow principle of an IoT water meter with the function of analyzing abnormal water consumption status according to the present invention Figure 2 .

[0037] 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. Flowmeter interface; 14. Valve control interface; 15. Electromagnetic lock; 16. Dial case; 17. Dial cover; 2. Dial head; 21. Water flow sensor; 22. Water pressure sensor; 23. Vibration sensor; 3. Round pipe; 4. Conical pipe; 5. Main inlet valve; 6. Alarm mechanism; 61. Liquid difference component; 611. Capillary branch pipe; 612. Intake valve; 613. Flared pipe; 614. Floating ball; 62. Magnet control component; 621. First annular magnet; 622. Second annular magnet; 623. First linear bearing; 624. Suspended arm; 63. Alarm component; 631. Second linear bearing; 632. Contact switch; 633. Third annular magnet; 634. Fourth annular magnet. Detailed implementation mode

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0039] Embodiment 1: According to Figure 1 - Figure 12As shown in the figure, a water 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 built-in system time of the STM32 chip 113 is periodically network-calibrated through the WIFI chip 115 to implement the function of the clock module. The STM32 chip 113 stores water usage information through the RAM of the register to implement the function of the cache module. The valve control interface 14 controls the actuator of the main water inlet valve 5 to implement the function of the valve control module. The flowmeter interface 13 transmits the monitoring information of the water flow sensor 21 to the STM32 chip 113 for processing, so as to monitor the water flow. The flowmeter interface 13 transmits the monitoring information of the water pressure sensor 22 to the STM32 chip 113 for processing, so as to monitor the water pressure. The flowmeter interface 13 transmits the monitoring information of the vibration sensor 23 to the STM32 chip 113 for processing to monitor the abnormal vibration of the water pipe. The STM32 chip 113 conducts network communication through the WIFI chip 115 to implement the function of the wireless communication module. An Internet of Things communication for 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 conducts Internet of Things communication with the mobile phone APP through the WIFI chip 115 to implement the clock module calibration and synchronization function. 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 usage data can be transmitted from the water meter to the APP in a timely and accurate manner;

[0040] Information is transmitted among the water meter, the mobile phone APP, and the regional management personnel through wireless communication. The digital dial 1 issues a warning when the water storage in the enterprise is insufficient, and the actuator of the main water inlet 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 early warnings of abnormal water usage. The water meter is mainly responsible for transmitting data outward, synchronizing time information with the mobile phone APP, and remotely receiving control instructions from the manufacturer's network platform and the mobile phone APP.

[0041] The vibration sensor 23 is usually a piezoelectric ceramic sensor. When it is affected by external vibration, due to the piezoelectric effect, a charge change will occur at both ends, thereby converting the vibration signal into an electrical signal. The characteristics such as the amplitude and frequency of the electrical signal are related to factors such as the intensity and frequency of the vibration. Abnormalities of the faucet valve core or working vibrations of household appliances can be detected by the vibration sensor 23 in a timely manner; when under the action of water pressure, the resistance of the semiconductor material (such as a silicon wafer) inside the water pressure sensor 22 will change, and this resistance change has a certain proportional relationship with the water pressure. By measuring the change in resistance, the water pressure can be indirectly measured.

[0042] The analysis process of the abnormal water usage state is as follows:

[0043] 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 buffer module, and the wireless communication module is used to send the data to the mobile phone APP;

[0044] 2) Data processing and user portrait establishment: The mobile phone APP locally stores the historical water usage data of users, and uses the built-in data analysis algorithm to establish a user portrait of the water usage habit model, and records the data during the peak water usage period and the base value period of the enterprise;

[0045] 3) Analyze abnormal data and display alarms: Analyze the currently collected data during the corresponding time period, calculate in combination with the data model of the user portrait, classify the alarm reasons according to the results and issue alarms;

[0046] 4) Self-check alarm of the device: Compare the alarm signals of the alarm mechanism 6 and the mobile phone APP, and issue a self-check alarm when the alarm signals of the alarm mechanism 6 and the mobile phone APP conflict.

[0047] The present embodiment is as follows:

[0048] Data collection and transmission: The water meter is built-in with a water flow sensor 21 and a water pressure sensor 22, and the STM32 chip 113 is used 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 of the data, such as recording information such as the start and end times of water usage and the cumulative flow rate.

[0049] The WIFI chip 115 enables the water meter to establish a WIFI connection, and uses the TCP (Transmission Control Protocol) or UDP (User Datagram Protocol) protocol to send the packed 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 orderly. The mobile phone APP needs to start a network listening service on the mobile phone and set a specific port to receive the data sent by the water meter. When the mobile phone APP monitors that the data sent by the water meter arrives at the port, it will read and parse the data.

[0050] Data processing and abnormal analysis of the mobile phone APP: The mobile phone APP locally stores the historical water usage data of the workshop, and uses the built-in data analysis algorithm (such as simple statistical analysis methods or lightweight machine learning algorithms) to establish a user water usage habit model. Record the time periods when the user's peak water usage period and base value period occur respectively.

[0051] When the mobile phone APP receives the new water usage data sent by the water meter, it immediately analyzes it locally using the established water usage habit model. Different reasons for the abnormal water usage state are:

[0052] Water is used during the remaining water usage period, which is the time period with the lowest water usage flow rate within the cycle. Generally, the water usage amount is zero. If the clock module monitors that the water usage duration exceeds the normal range, the APP determines it as an abnormal water usage situation and displays an alarm for water resource consumption in the APP.

[0053] During peak water usage, when the water pressure sensor 22 monitors that the water pressure in the main water supply pipeline is unstable, the APP determines it as an abnormal water usage situation and displays an alarm for insufficient water pressure in the APP. The factory can stagger the time of peak water usage behavior according to production arrangements to ensure the stability of pipeline water usage.

[0054] During the base water usage, the vibration sensor 23 monitors vibrations in the water pipeline. If the vibration data exceeds the threshold, an alarm for abnormal pipeline vibration is displayed in the APP to troubleshoot various vibration problems such as unstable water pressure, leakage resonance of the valve core, and water hammer caused by residual gas in the pipeline not being exhausted.

[0055] When it is detected and analyzed that there is a water leakage in the pipeline, the vibration sensor 23 analyzes the abnormal water usage, collects the numerical value of the inherent vibration amplitude of the pipeline, checks for pipeline installation defects based on the vibration amplitude value. After the measurement module measures the inherent vibration amplitude of the pipeline, it measures the vibration amplitude value of the pipeline under peak water usage, combines it with the water flow rate measured by the water flow measurement module, calculates the vibration intensity of the pipeline caused by the water flow. When it exceeds the threshold, it determines the water usage as abnormal and eliminates the cause of the failure.

[0056] Alarm and display of abnormal reasons: Once the APP detects abnormal water usage, it sends an alarm to the user through the notification system of the mobile phone, and details the analysis results of the reasons for abnormal water usage, explaining the possible reasons for the abnormal situation to the user in an easy-to-understand text and chart form.

[0057] 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 data, analyzes the reasons for abnormal water usage based on the user portrait recorded in previous data, and reminds on the mobile phone APP to achieve the first-level alarm function, which is used to remind the water resource management personnel in the factory of the abnormal water usage status.

[0058] Self-check alarm of the device: In the second-layer alarm function, the pressure difference at two positions of the conical tube 4 is measured through two connected capillary branches 611, and the resulting hydraulic pressure difference can trigger the contact switch 632 to make the buzzer 112 alarm. In the first-layer alarm function, the water flow rate is directly measured by the water flow sensor 21, and data analysis is performed based on the user profile, and an alarm is issued for abnormal data. The two detection means are independent of each other and can independently implement detection and alarm. The water flow alarm signal is fed back to the STM32 chip 113, and the STM32 chip 113 performs self-check analysis on the two sets of independent alarms. When one of the detection means fails, the STM32 chip 113 makes a determination and can control the buzzer 112 to perform self-check alarm so that the inspection personnel can discover and handle it in time.

[0059] Embodiment 2: According to Figure 1 - Figure 10 As shown: An Internet of Things water meter with the function of analyzing abnormal water consumption states includes 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 tube 3, and 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. Both ends of the alarm mechanism 6 are respectively installed on the side walls of different pipe diameters of the conical tube 4, and the static pressure difference formed at both ends of the alarm mechanism 6 is formed by using the flow velocity difference formed by the water flow at the two places. The alarm is monitored by setting a static pressure difference threshold inside the alarm mechanism 6;

[0060] A water flow sensor 21 is arranged inside the meter head 2. The water flow sensor 21 is installed in the pipeline. A water pressure sensor 22 is installed inside the round tube 3, and a vibration sensor 23 is installed on the outer side wall of the water flow sensor 21. The digital dial 1 includes 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 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. The meter head 2 is signal-connected to the STM32 chip 113 through the flow meter interface 13. One end of the round tube 3 is connected to a main water inlet valve 5, and the main water inlet valve 5 is signal-connected to the STM32 chip 113 through the 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, and an electromagnetic lock 15 is arranged on the side wall of the dial case 16. The dial case 16 controls the opening and closing of the dial cover 17 through the electromagnetic lock 15;

[0061] In this embodiment, the two ends of the water flow sensor 21 are respectively connected to a circular pipe 3 with a constant pipe diameter and directly connected to the water pipe, and a conical pipe 4 with a tapered middle section and the pipe diameters at both ends gradually thickening to be the same as that of the circular pipe 3. One end of the liquid differential assembly 61 is connected to the tapered opening, and the other end is connected to the thickest part of the conical pipe 4. Using Bernoulli's principle of fluid mechanics, a water flow velocity difference is generated based on the pipe diameter difference at two places of the conical pipe 4, and the flow velocity difference increases as the water flow rate increases. The liquid differential assembly 61 can measure this flow velocity value. The liquid differential assembly 61 is a sealed structure and is filled with gas inside to form a high air pressure to resist water negative pressure. A liquid level difference is generated at both ends due to the static pressure difference, similar to the working principle of a Venturi tube 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 lower the flow velocity alarm threshold, and decreasing the internal air pressure will raise the flow velocity alarm threshold;

[0062] The display screen 111 is signal-connected to the STM32 chip 113 and can display parameters such as water pressure, water flow rate, and total water consumption. The buzzer 112 is controlled by the contact switch 632 and triggers an alarm according to the liquid level difference in the capillary branch pipe 611. The card reader 114 is signal-connected to the STM32 chip 113 and controls the on-off of the circuit of the electromagnetic lock 15, thereby controlling the opening and closing of the dial cover 17.

[0063] Embodiment Three: According to Figures 6 - 10 As shown, the alarm mechanism 6 includes a liquid differential assembly 61, a magnetic control assembly 62, and an alarm assembly 63. The liquid differential assembly 61 includes two capillary branch pipes 611. One of the capillary branch pipes 611 is communicated with the circular pipe 3 and is movably connected to the magnetic control assembly 62. The other capillary branch pipe 611 is communicated with the conical pipe 4 and is movably connected to the alarm assembly 63. An expansion pipe 613 is communicated between the two capillary branch pipes 611. Floating balls 614 are arranged inside the pipes of the two capillary branch pipes 611. An air inlet valve 612 is installed at the top of the expansion pipe 613, and the internal air pressure of the expansion pipe 613 is controlled through the air inlet valve 612.

[0064] The magnetically controlled component 62 includes a first annular magnet 621, a second annular magnet 622, and a first linear bearing 623. The first linear bearing 623 slides vertically on the outer sidewall of the capillary branch pipe 611. The first annular magnet 621 is arranged inside the capillary branch pipe 611 and sits on the surface of the floating ball 614. The second annular magnet 622 is embedded inside the first linear bearing 623 and moves synchronously with the first annular magnet 621 through magnetic attraction. A suspension arm 624 is fixedly connected to the outer sidewall of the first linear bearing 623. The first linear bearing 623 is fixedly connected to the alarm component 63 through the suspension arm 624. The alarm component 63 includes 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 pipe 611 and sits on the surface of the floating ball 614. The second linear bearing 631 slides vertically on the outer sidewall of the capillary branch pipe 611. The third annular magnet 633 is embedded inside the second linear bearing 631 and repels the fourth annular magnet 634 through magnetic repulsion. A contact switch 632 is arranged at the bottom end of the third annular magnet 633. After the contact switch 632 comes into contact with the third annular magnet 633, an alarm signal is emitted.

[0065] In this embodiment, the liquid difference component 61 is a U-shaped pipe composed of two capillary branch pipes 611 at both ends and a flared pipe 613 with a larger diameter in the middle. The flared pipe 613 can store more gas. Since the liquid difference component 61 is connected to the conical pipe 4, the pressure of water on the pipe wall will cause some water to enter the capillary branch pipe 611. The gas in the flared pipe 613 is used to balance the pressure energy of water to maintain the water level balance. When there is no water-using behavior, the pressure energies of the water bodies in the two capillary branch pipes 611 are the same, and the liquid levels are the same; when using water, the water flow causes the pressure energy to decrease, and the liquid levels of the two capillary branch pipes 611 both drop. The flow rate of the capillary branch pipe 611 at the conical opening is larger, and the pressure energy decreases more. The static pressure difference causes the liquid levels of the two to drop by different heights to generate a liquid level difference. Moreover, the larger the flow rate and the flow volume, the larger the static pressure difference, and the larger the liquid level difference.

[0066] A magnetically controlled component 62 and an alarm component 63 are respectively arranged on the outer sides of the capillary branch pipes 611 connected to the conical pipe 4 with the same thickness and diameter. Due to the pressure difference, the liquid level at the magnetically controlled component 62 is high, and the liquid level at the alarm component 63 is low and below. The first annular magnet 621 and the fourth annular magnet 634 on the two floating balls 614 interact with each other, and drive the second linear bearing 631 to move through the first linear bearing 623 and the suspension arm 624. When the height difference between the second linear bearing 631 and the fourth annular magnet 634 exceeds the threshold value, the magnetic repulsion force of the third annular magnet 633 on the fourth annular magnet 634 weakens, and the contact switch 632 is triggered;

[0067] The contact switch 632 can change the on / off state of the circuit according to the change of mechanical pressure. When the annular magnet III 633 does not press it, it is in the normally open and open circuit state, and the internal conductive components are separated; when the annular magnet III 633 contacts and presses it, the external force causes the internal mechanical structure to change, the conductive components contact, and the circuit is connected to the buzzer alarm. Thereafter, 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 processes of oscillation, amplification, and sound generation.

[0068] The above process can complete the alarm of the buzzer alarm in the water meter, realizing the second-layer alarm function. Personnel are arranged to conduct regular inspections in the instrument room of the factory, and they can timely detect the second-layer sound and light alarm emitted by the water meter itself, and can timely take corresponding measures to deal with abnormal states.

[0069] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within 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 a 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 pipe diameters, 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 static pressure difference threshold is set inside the alarm mechanism (6) to monitor the alarm; 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 connected to the circular tube (3) and is movably connected to the magnetic control component (62); the other capillary branch (611) is connected to the conical tube (4) and is movably connected to the alarm component (63); an expansion tube (613) is connected 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); the internal air pressure of the expansion tube (613) is controlled by the air intake valve (612); 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 is seated on the surface of the floating ball (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 suspended arm (624); the linear bearing 1 (623) is fixedly connected to the alarm component (63) through the suspended arm (624); 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); the contact switch (632) sends an alarm signal after contacting the third annular magnet (633); 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 current 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; Using two independent detection methods, the capillary branch for measuring the pressure difference of the tapered tube and the sensor for directly measuring the water flow, the chip conducts self-inspection and analysis on the two alarm systems. When one of the detection methods fails, the chip can determine and make the buzzer self-check and 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 arranged 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), and 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), and an electromagnetic lock (15) is provided on a side wall of the dial case (16), 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 through a WIFI chip (115) to realize the function of the clock module. The STM32 chip (113) stores water use information through a RAM of a register 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 through the network through 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: 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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