CN219368819U

CN219368819U - Intelligent water meter based on single-chip microcomputer

Info

Publication number: CN219368819U
Application number: CN202320396614.0U
Authority: CN
Inventors: 李家源
Original assignee: Xian Shiyou University
Current assignee: Xian Shiyou University
Priority date: 2023-03-06
Filing date: 2023-03-06
Publication date: 2023-07-18
Anticipated expiration: 2033-03-06

Abstract

The utility model discloses a single-chip microcomputer-based intelligent water meter, which belongs to the technical field of intelligent water meter monitoring and is used for improving the water quantity monitoring accuracy of the intelligent water meter, and particularly relates to the single-chip microcomputer-based intelligent water meter.

Description

Intelligent water meter based on single-chip microcomputer

Technical Field

The utility model belongs to the technical field of intelligent water meters, and is used for improving the water quantity monitoring accuracy of the intelligent water meter, in particular to an intelligent water meter based on a single chip microcomputer.

Background

The intelligent water meter is a novel water meter which measures the water consumption by utilizing the modern microelectronic technology, the modern sensing technology and the intelligent IC card technology and performs water consumption data transmission and settlement transaction; compared with the traditional water meter which generally only has the functions of flow collection and mechanical pointer display of water consumption, the water meter is greatly improved. Besides recording and electronic displaying the water consumption, the intelligent water meter can also control the water consumption according to convention, automatically complete water cost calculation of the step water price and simultaneously perform the function of storing water consumption data. The existing intelligent water meter adopts a microprocessor, a valve, a flow sensor, an IC card reader/writer, a display, a power supply and software integrated on the microprocessor to realize an ideal management mode of paying before using water and holding card settlement, provides a convenient statistical inquiry function, is convenient for comprehensively and timely knowing the situation and provides a basis for decision making. However, the existing intelligent water meter has the problems of high power consumption and inaccurate measurement in the actual use process, high cost in the manufacturing process and poor high temperature resistance and vibration resistance in special occasions; in particular, the flow sensors used cannot effectively monitor the water flow flowing back through the meter. In order to reduce the cost and improve the accuracy of water meter measurement, the utility model provides an intelligent water meter based on a singlechip.

Disclosure of Invention

The utility model aims to provide an intelligent water meter based on a single chip microcomputer, which solves the problem of poor monitoring effect in the prior art.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a based on intelligent water gauge of singlechip, includes the casing, the both ends of casing are provided with inlet tube and outlet pipe respectively, be provided with intelligent control mechanism on the inlet tube, be provided with water yield monitoring mechanism in the casing, water yield monitoring mechanism includes two impellers that set up relatively and set up respectively two magnet steel on the pivot top of impeller and set up the magnetic switch sensor in two magnet steel top respectively, the magnetic switch sensor with intelligent control mechanism electricity is connected.

The shell comprises a water meter upper cover and a water meter lower cover, the impeller, the water inlet pipe and the water outlet pipe are respectively arranged on the water meter lower cover, and the magnetic switch sensor is arranged on the water meter upper cover.

And water glass is arranged between the upper water meter cover and the lower water meter cover, and the magnetic switch sensor is positioned on the upper surface of the water glass.

The top of the rotating shaft is provided with a magnetic steel groove, and the magnetic steel is arranged in the magnetic steel groove.

The intelligent control mechanism comprises an electromagnetic valve arranged on the water inlet pipe and a control unit arranged above the electromagnetic valve, and the control unit is electrically connected with the electromagnetic valve.

The control unit comprises a PIC singlechip, a power supply module, an IC module, a gate valve driving module and an LCD display module which are electrically connected with each other, and the gate valve driving module is connected with the electromagnetic valve.

The control unit further includes an NB-IoT module electrically connected to the PIC monolithic computer, and a remote server network connected to the NB-IoT module.

Compared with the prior art, the utility model has the following advantages:

according to the intelligent water meter, the two impellers are oppositely arranged in the shell, the magnetic steel is respectively arranged on the top ends of the rotating shafts of the two impellers, the magnetic switch sensors are respectively arranged above the magnetic steel, water flows through the shell and drives the impellers to rotate, meanwhile, the two impellers respectively rotate in the shell to form circular tangency, the magnetic steel is driven to rotate, the magnetic switch sensors above the magnetic steel are transmitted to the PIC singlechip for processing according to the change of a magnetic field and switching signals generated alternately, when the magnetic steel is reversed, the sequence of pulse signals generated by the two magnetic switch sensors can be reversed, and the PIC singlechip is used for realizing forward and reverse flow counting and improving the monitoring effect of the intelligent water meter by collecting the switching signals.

Drawings

FIG. 1 is a schematic diagram of an intelligent water meter according to the present utility model.

Fig. 2 is a schematic diagram showing the connection between the water glass and the lower cover of the water meter.

Fig. 3 is a schematic diagram showing the connection between the lower cover and the impeller of the water meter.

Fig. 4 is a schematic diagram of electrical connection of the intelligent water meter of the present utility model.

Fig. 5 is a schematic diagram of the working principle of the magnetic steel and magnetic switch sensor in this embodiment.

In the figure: 1PIC singlechip, 2IC module, 3 power module, 4 battery, 5 solenoid valve, 6 magnet steel, 7 impeller, 8 water gauge cavity, 9 water glass, 10 magnet steel groove, 11 magnetism switch sensor, 12 antenna, 13 main control panel, 14NB-IoT module, 15LCD display module, 16 water gauge upper cover, 17 water gauge lower cover.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

As shown in fig. 1 and 2, the intelligent water meter based on the single chip microcomputer comprises a shell, wherein two ends of the shell are respectively provided with a water inlet pipe and a water outlet pipe, an intelligent control mechanism is arranged on the water inlet pipe, a water quantity monitoring mechanism is arranged in the shell and comprises two impellers 7 which are oppositely arranged, magnetic steels 6 which are respectively arranged at the top ends of rotating shafts of the two impellers 7, and magnetic switch sensors 11 which are respectively arranged above the two magnetic steels 6, and the magnetic switch sensors 11 are electrically connected with the intelligent control mechanism; the water flow passes through the shell and drives the impellers 7 to rotate, meanwhile, the two impellers 7 respectively rotate in the shell to form circular tangency, and then the magnetic steel 6 is driven to rotate, the magnetic switch sensors 11 above the magnetic steel 6 are transmitted to the PIC singlechip 1 for processing according to the change of a magnetic field and the switching signals generated alternately, when the magnetic steel 6 is reversed, the sequence of pulse signals generated by the two magnetic switch sensors 11 can be reversed, and the PIC singlechip 1 collects the switching signals, so that the forward and reverse flow counting is realized, and the monitoring effect of the intelligent water meter is improved.

As shown in fig. 2-5, in this embodiment, the PIC single-chip microcomputer 1 adopts a dsPIC30f4011 control chip of Microchip company, the magnetic switch sensor 11 is a TMR sensor, the LCD display module adopts iplcd, the IC module adopts MF522-AN non-contact IC card read-write module, and the chip is a low-voltage, low-cost and small-volume non-contact read-write card chip which is proposed by NXP company for three-meter application, and is widely applied to intelligent meters; the NB-IOT module adopts an NB module of EC-01, remote meter reading is realized based on an intelligent meter reading control management system, the electromagnetic valve is driven by a relay to realize start and stop, and the shell is made of metal pieces. When the intelligent water meter is specifically installed, the shell comprises an upper water meter cover 16 and a lower water meter cover 17, the upper water meter cover 16 and the lower water meter cover 17 are fixed through a sealing ring and a bolt, two ends of the lower water meter cover 17 are respectively provided with a water inlet pipe and a water outlet pipe, and the water inlet pipe is provided with an intelligent control mechanism for automatically controlling and detecting water flow; two rotating shafts are arranged side by side in a water meter cavity 8 of the water meter lower cover 17, magnetic steel grooves 10 are respectively arranged at the top ends of the two rotating shafts, the magnetic steel grooves 10 are connected with a mechanism, magnetic steel 7 are respectively and reversely arranged in the two magnetic steel grooves 10, two impellers 7 respectively rotate in the water meter lower cover 17 to form circular tangency, and water flows through the impellers 7 to drive the rotating shafts and the magnetic steel 6 to rotate in the water meter lower cover 17; the water meter lower cover 17 is provided with water glass 9, the outer edge of the water glass 9 is matched with the water meter lower cover 17 and is connected with the water meter lower cover 17 through a sealing rubber ring, the water meter upper cover 16 is provided with two mounting holes, the two mounting holes are respectively provided with a magnetic switch sensor 11, the magnetic switch sensors 11 are perpendicular to the magnetic steel 6, the magnetic switch sensors 11 are electrically connected with the intelligent control mechanism and are used for collecting switching signals generated alternately and changing magnetic fields of the two magnetic steels 7 and transmitting the switching signals to the intelligent control mechanism for processing and displaying.

As shown in fig. 3-5, the intelligent control mechanism comprises an electromagnetic valve 5 arranged on the water inlet pipe and a control unit arranged above the electromagnetic valve 5, wherein the control unit is electrically connected with the electromagnetic valve 5, and the control unit controls the electromagnetic valve 5 to open or close the water inlet pipe; the control unit comprises a PIC single chip microcomputer 1 main control module, an IC module 2, an NB-IoT module 14, an LCD display module 15, a door valve driving module, a magnetic switch sensor 11 and a power supply module 4 which are electrically connected with each other, wherein the PIC single chip microcomputer 1 main control module, the IC module 2, the NB-IoT module 14, the LCD display module 15, the door valve driving module, the power supply module, the NB-IoT module 3 and the LCD display module 15 are integrated on a main control board 13, and a battery 4 is electrically connected with the main control board 13 and is arranged on a water meter through a box body for remote control and water quantity detection; the PIC singlechip 1 is dsPIC30F4011, adopts an improved Harvard structure, has a C compiler optimization instruction set architecture with a flexible addressing mode, and consists of a crystal oscillation circuit, a power supply filter circuit and a reset circuit, so that the control function of a peripheral circuit is realized, and each module circuit can normally and orderly work; the magnetic switch sensor 11 adopts a TMR magnetic sensor, adopts a counting mode of matching a double-magnetic-steel signaling pointer with two TMR1208 bipolar latch type magnetic switch sensors, has a forward and reverse flow counting function, and the TMR1208 series magnetic switch chip is a bipolar latch type magnetic switch chip integrated with a tunnel magnetic flux (TMR) sensor and a CMOS circuit, and converts a changed magnetic field signal into a digital voltage signal so as to realize accurate detection of the position; when the double magnetic steel 7 rotates positively, the two TMR1208 bipolar latch type magnetic switch sensors alternately generate switch signals according to the change of a magnetic field to form pulse signals of 01, 00, 10 and 11, when the double magnetic steel 7 rotates reversely, the sequence of the pulse signals generated by the two TMR1208 bipolar latch type magnetic switch sensors can be reversed, and PIC singlechips and 1 realize forward and reverse flow counting by collecting the pulse signals; the signal output pins VOUT1 and VOUT2 of the two TMR1208 bipolar latch type magnetic switch sensors are respectively connected to the RB4 and RB5 pins of the PIC singlechip 1, the RB4 and RB5 of the PIC singlechip 1 are respectively ADC acquisition channels AN4 and AN5, and switch signals returned by the TMR1208 bipolar latch type magnetic switch sensors are read through AD sampling, so that counting is performed, the flow of water is further converted, and the effect of measuring the flow of water is further achieved; the signal output point of the intelligent meter reading control management system is connected to the NB-IOT module 14, the NB-IOT14 module adopts an NB module of EC-01 to realize remote data transmission, a main chip scheme adopted by the NB part is EC616S, the NB-IOTSoC with ultra-high integration level is provided, ultra-low power consumption is supported, water flow information, balance information and fault information are transmitted to a remote server through the NB-IOT module, and the remote server centrally manages management, meter reading, recharging and other operations of a plurality of intelligent water meters; the intelligent water meter adopts the MF522-AN non-contact IC card read-write module 1 with more advanced technology, the chip is a low-voltage, low-cost and small-size non-contact read-write card chip which is pushed out by NXP company aiming at three-meter application, the IC card design of the intelligent water meter is designed for the old who cannot remotely operate, and the non-contact IC card is adopted to realize the recharging and paying function; the electromagnetic valve 5 is driven by a relay, when the balance of water is insufficient, the PIC singlechip controls the relay to close the electromagnetic valve, so that the water cut-off effect is achieved, meanwhile, the balance insufficient information is transmitted to a remote server by an NB-IOT module, the remote server can transmit the information to a user, and the user performs water purchasing operation in an online recharging or IC recharging mode; the display part adopts an IPSLCD liquid crystal screen for display, wherein ST7735S is used as a driving chip and is communicated with a PIC singlechip in an SPI mode, SCL of the LCD is connected to SCK1 pin of the singlechip, SDA of the LCD is connected to SDO1 pin of the singlechip, CS of the LCD is connected to SS1 pin of the singlechip, and battery power supply 4 is adopted, so that the PIC singlechip is in a sleep mode at ordinary times for reducing power consumption, and is waited for awakening internal and external interrupt events, and after the time for acquiring data is set, the PIC singlechip is awakened and acquires the data through a TMR magnetic sensor module; after the data transmission time is set, the PIC singlechip 1 wakes up and activates the NB-IOT transmission module to start data transmission through the NB-IOT network and display the data through the remote server; the intelligent water meter provided by the product selects a simplified instruction set, has the characteristics of independent data lines and instruction lines, high code efficiency, vibration resistance, high temperature resistance, dsPIC30F4011 single-chip microcomputer modules, the PIC single-chip microcomputer modules are low-power-consumption designs, have flexible clock setting functions, can be quickly awakened from a low-power-consumption state, can respectively run in a standby mode or a shutdown mode, and the dsPIC30F4011 single-chip microcomputer has the characteristics of independent data lines and instruction lines, high code efficiency and the like, and the PIC single-chip microcomputer modules are arranged inside the intelligent water meter, namely the water meter upper cover 16; the flow detection mechanism adopts a TMR sensor circuit which is connected with AN AN5 interface through AN AN4 interface of the PIC singlechip module; the counting method is mainly realized by a TMR magnetic sensor module, and the purpose of accurate counting and positive and negative counting can be achieved by matching a double magnetic steel signaling pointer with two TMR1208 bipolar latch type magnetic switch sensors; the liquid crystal display module is respectively connected to SCK1, SDO1 and SS1 interfaces of the PIC singlechip by adopting IPSLC, so that the display function of the used water quantity and the residual water quantity is realized, and the integrated LCD controller can also meet the display requirements of the intelligent water meter under different conditions; the intelligent water meter transmits water flow information, balance information and fault information to a remote server through AN NB-IOT module, the remote server performs management, meter reading, recharging and other operations on a plurality of intelligent water meters in a centralized management range, the NB-IOT module adopts AN NB module of EC-01, a main chip scheme adopted by the NB part is EC616S, the EC-01 is electrically connected with a PIC singlechip, the intelligent water meter adopts AN MF522-AN non-contact IC card read-write module with more advanced technology, and the chip is a low-voltage, low-cost and small-size non-contact read-write card chip which is proposed by NXP company for three-meter application and is widely applied to intelligent meters; the IC card design of the intelligent water meter is designed for the old and special people who cannot remotely operate, and can realize the recharging and paying function by adopting a non-contact IC card, and the non-contact IC card read-write module is electrically connected with the PIC singlechip; in the embodiment, the intelligent water meter based on the PIC singlechip adopts a main control chip of dsPIC30F4011 with vibration resistance, high temperature resistance, high operation speed and high code efficiency, adopts a TMR sensor with double magnetic steels to accurately collect the water consumption of a user, has the function of counting countercurrent, and uploads the information of the water consumption and the residual water consumption to a user side through NB-IOT; the user can pay water fee by two ways of remote recharging and IC card. Simultaneously, an IPSLC LCD is equipped to display the used water quantity and balance; the master control PIC singlechip is in a sleep mode at average time, waits for internal and external interrupt events to wake up, and meets the technical requirements of low power consumption, low cost, vibration resistance and high temperature resistance.

The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, and any simple modification, variation and equivalent structural changes made to the above embodiment according to the technical substance of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. The utility model provides a based on intelligent water gauge of singlechip, its characterized in that, includes the casing, the both ends of casing are provided with inlet tube and outlet pipe respectively, be provided with intelligent control mechanism on the inlet tube, be provided with water yield monitoring mechanism in the casing, water yield monitoring mechanism includes two impellers that set up relatively and set up respectively two magnet steel on impeller pivot top and set up the magnetic switch sensor in two magnet steel top respectively, the magnetic switch sensor with intelligent control mechanism electricity is connected.

2. The intelligent water meter based on the single-chip microcomputer according to claim 1, wherein: the shell comprises a water meter upper cover and a water meter lower cover, the impeller, the water inlet pipe and the water outlet pipe are respectively arranged on the water meter lower cover, and the magnetic switch sensor is arranged on the water meter upper cover.

3. The intelligent water meter based on the single-chip microcomputer according to claim 2, wherein: and water glass is arranged between the upper water meter cover and the lower water meter cover, and the magnetic switch sensor is positioned on the upper surface of the water glass.

4. The intelligent water meter based on the single-chip microcomputer according to claim 1, wherein: the top of the rotating shaft is provided with a magnetic steel groove, and the magnetic steel is arranged in the magnetic steel groove.

5. The intelligent water meter based on the single-chip microcomputer according to claim 1, wherein: the intelligent control mechanism comprises an electromagnetic valve arranged on the water inlet pipe and a control unit arranged above the electromagnetic valve, and the control unit is electrically connected with the electromagnetic valve.

6. The intelligent water meter based on the single-chip microcomputer according to claim 5, wherein: the control unit comprises a PIC singlechip, a power supply module, an IC module, a gate valve driving module and an LCD display module which are electrically connected with each other, and the gate valve driving module is connected with the electromagnetic valve.

7. The intelligent water meter based on the single-chip microcomputer according to claim 6, wherein: the control unit further includes an NB-IoT module electrically connected to the PIC monolithic computer, and a remote server network connected to the NB-IoT module.