CN109243079B - Prepaid water meter system and prepaid method based on Internet of things - Google Patents
Prepaid water meter system and prepaid method based on Internet of things Download PDFInfo
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- CN109243079B CN109243079B CN201811048479.0A CN201811048479A CN109243079B CN 109243079 B CN109243079 B CN 109243079B CN 201811048479 A CN201811048479 A CN 201811048479A CN 109243079 B CN109243079 B CN 109243079B
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- 238000010586 diagram Methods 0.000 description 9
- 239000007789 gas Substances 0.000 description 7
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Classifications
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F15/00—Coin-freed apparatus with meter-controlled dispensing of liquid, gas or electricity
- G07F15/06—Coin-freed apparatus with meter-controlled dispensing of liquid, gas or electricity with means for prepaying basic charges, e.g. rent for meters
Abstract
A prepaid water meter system and a prepaid method based on the Internet of things, which can be charged and managed online. The system comprises a plurality of prepaid metering water meters which are arranged at a use end and are electromechanical integrated, a palm terminal, the Internet and a background water management center, wherein an electric control module of the prepaid metering water meters consists of a main control MCU, a wireless communication module, a valve control module, an electronic metering module and a battery power supply module. The palm terminal is adopted to carry out wireless interconnection with the prepaid metering water meter and related data information is sent to a background water service management center through the Internet; the method can effectively solve the problem of unfairness brought to users by counting errors existing in different recharging periods of the electronic counting of the water meter and the reading of the mechanical character wheel; the palm terminal can enable a user to recharge on line, namely charge and use, so that the problems that the water purchasing of the user is limited by distance and time and the like are effectively solved.
Description
Technical Field
The invention relates to a water, electricity and gas payment system and a payment method, in particular to an intelligent prepayment system and a prepayment method based on the Internet of things.
Background
In the prior art, a treatment method of water, gas or electricity is adopted for a user in a prepayment mode, and is basically completed by the following steps:
firstly, a user goes to a card selling point designated by a main management company (namely a tap water company, a gas company and a power supply company) to purchase an IC rechargeable card, and the purchased water, gas, electricity or corresponding amount of the set amount (water and gas are measured in cubes and electricity are measured in degrees) is charged into the IC rechargeable card as required;
and secondly, interconnecting the IC rechargeable card with a corresponding electromechanical integrated IC card meter (also called an IC card prepaid water meter or an IC card water meter) in a contact or non-contact mode, and starting the meter to work (namely, the meter supplies the set quantity of water, gas or electricity recorded on the IC rechargeable card to the user).
And thirdly, when the set quantity on the IC rechargeable card is used up, the meter is closed, and water, gas or electricity is stopped to be output.
The foregoing prepayment method has the following drawbacks (for example, a prepayment water meter):
1) IC card water meters, in general, are used by counting in the following way:
mechanical counting: the water flowing through the meter drives the impeller to rotate, which drives the gear set to link, thereby causing the numbers on the mechanical counter wheel connected to the gears associated with the gear set (e.g. as described in 10 －3 、10 －2 …10 3 Cubic etc. of different orders of magnitude) are changed accordingly.
Electronic counting: the magnetic induction element detects and collects pulse signal counting through the rotation of the magnetic pointer at the mechanical meter end, namely, the number of rotation turns of the magnetic pointer is measured, and therefore the electronic counting is calculated in an accumulated mode.
In the use of this kind of water gauge, the water gauge can lead to the table to appear corotating and reversing because of phenomenon such as pipeline pressure is not enough, water hammer and rotation, the sensor that detects pointer rotation number of turns all can produce count pulse this moment, whether corotation or reversal promptly, all accounting is water consumption, but the water gauge does not really use water this moment, water gauge mechanical character wheel does not increase, but electron count part accounting number, thereby lead to pulse electron cumulative count value and water gauge mechanical character wheel count value to appear the deviation, and can overlap because of the deviation, the water gauge can't realize electromechanical synchronization regularly, the longer the time of use deviation is bigger, lead to producing unnecessary disputes between user and the management side.
2) Whether the non-contact type IC card water meter or the contact type IC card water meter can not realize online recharging, a user needs to carry the user card to the appointed water selling point for recharging, the water purchasing time and the place are limited, the recharging waiting time is long, and great inconvenience is brought to the daily life of the user.
3) The IC card water meter is difficult to avoid the problem of recharging fraud (very few managers for the purposes of the public fraud pay little and recharge more for water purchasing users through big ends and small ends).
4) The IC card water meter can not synchronize the water consumption of a user to the background due to the pre-purchase of the water consumption, so that a tap water company can hang up the account for a long time (the accounting process of the pre-receivables is recorded as liabilities, and thus the incomes cannot be confirmed), the financial accounting is seriously influenced, and the monitoring and the management of the water consumption data of the user are inconvenient.
5) The IC card water meter is an independent working individual, the background can not monitor the IC card water meter, and a water meter fault can be found only when a user reports or carries out water meter inspection, and the fault can not be found and removed in time, so that the disconnection between the meter end and the background management system is caused.
6) The IC rechargeable card is easy to damage under strong magnetic interference, inconvenient to carry and easy to lose.
Disclosure of Invention
The invention aims to provide a prepaid water meter system and a prepaid method based on the Internet of things, which can be charged and managed on line.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention relates to a prepaid water meter system based on the Internet of things, which comprises a plurality of prepaid water meters, a palm terminal, the Internet and a background water management center which are arranged at a use end and are electromechanical, and is characterized in that: the electric control module of the prepaid metering water meter consists of a main control MCU, a wireless communication module, a valve control module, an electronic metering module and a battery power supply module, wherein,
the wireless communication module is matched and interconnected with a Bluetooth module arranged in the palm terminal; the wireless communication module sends the pulse electronic accumulated count value stored in the main control MCU at the end of the last period to the palm terminal, and simultaneously receives the mechanical character wheel reading and the new water pre-charge value of the charging period, which are displayed on the window of the prepaid metering water meter and are obtained by photographing, of the palm terminal, and stores the mechanical character wheel reading and the water pre-charge value into the main control MCU;
the palm terminal sends the pulse electronic accumulated count value, the mechanical character wheel reading and the water consumption pre-charge value at the end of the previous period to a background water management center through the Internet;
the main control MCU stores the pulse electronic accumulated count value recorded by the electronic metering module in real time and updates the pulse electronic accumulated count value at the end of the previous recharging period to the mechanical character wheel reading at the end of the previous recharging period when a new recharging period is started; after the recharging is successful, the main control MCU sends an instruction for starting the prepaid metering water meter to work to the valve control module;
the valve control module is used for controlling the opening or closing of a water valve of the prepaid metering water meter;
and the electronic metering module is used for collecting pulse signals generated when the mechanical counting pointer of the prepaid metering water meter rotates so as to obtain the pulse electronic accumulated count value.
The prepayment metering water meter is also provided with a battery voltage monitoring module for monitoring a battery in the battery power supply module, and the wireless communication module can send running state information comprising battery state, valve state and environmental magnetic interference to a background water service management center.
And a buzzer prompting module for prompting whether recharging is successful or not is also arranged in the prepaid metering water meter.
The main control MCU adopts a chip with the model of MSP430FR6972 IRGC; the wireless communication module mainly adopts a Bluetooth module with the model of E66_V01; the valve control module mainly adopts a chip with the model of SPX 3010.
The prepayment method based on the internet of things water meter system adopts the prepayment water meter system based on the internet of things, and prepayment is carried out according to the following steps:
1) Wake up the prepaid metering water meter to be recharged
A user or manager adopts a palm terminal which is downloaded with a prepaid APP and comprises a mobile phone and a special mobile terminal to scan an address code of a prepaid metering water meter which comprises a two-dimensional code printed on the meter, a bar code or an RFID bound on the water meter, obtain relevant information of the address code and pair and interconnect the information with a wireless communication module in the prepaid metering water meter;
2) Data exchange
The prepayment metering water meter transmits the pulse electronic accumulated count value stored in the prepayment metering water meter at the end of the last recharging period and the running state information comprising the battery voltage state, the valve state and the environment magnetic interference state of the meter end to the palm terminal;
the hand-held terminal photographs the mechanical character wheel reading at the end of the last recharging period displayed on the window of the prepaid metering water meter, converts the mechanical character wheel reading into corresponding digital information through image recognition software and transmits the digital information to the prepaid metering water meter;
3) Correcting the electronic storage counting base number to ensure electromechanical metering synchronization of the prepaid metering water meter;
the main control MCU in the prepaid metering water meter updates the pulse electronic accumulated count value at the end of the previous recharging period into the mechanical character wheel reading at the end of the previous recharging period, and the updated value is used as the pulse electronic accumulated count value at the initial of the new recharging period;
4) Recharging method
The method comprises the steps that a palm terminal is adopted to send the water pre-charge quantity required to be used in a new recharging period to a prepaid metering water meter, recharging is completed, and a buzzer arranged in the prepaid metering water meter sounds to prompt;
5) Starting prepaid metering water meter
The main control MCU controls the valve to act correctly according to the stored water pre-charge value, the water meter supplies water normally, and meanwhile, an electronic metering module in the pre-payment metering water meter performs electronic accumulated counting on the basis of the initial pulse electronic accumulated counting value;
6) Updating the related data of the background water management center in time;
and sending the updated pulse electronic accumulated count value, the water consumption pre-charge value and the running state information to a background water service management center through a wireless communication module, a palm terminal and the Internet.
In the method of the invention, whether the valve state is normal is judged by the following method:
1) The palm terminal and the prepaid metering water meter are in wireless pairing and interconnection;
2) The main control MCU detects the in-place detection pins OFF-M and ON-M of the valve connected with the valve control module, and if the detection pins OFF-M and ON-M are at high level at the same time, the abnormal state of the valve is judged.
In the method of the invention, whether the environmental magnetic interference state is normal is judged by the following method:
1) The palm terminal and the prepaid metering water meter are in wireless pairing and interconnection;
2) And the main control MCU detects output signal pins PA-M and PB-M connected with the electronic metering module sensor, and if the output signal pins PA-M and PB-M are at low level at the same time, the main control MCU judges that the magnetic interference phenomenon exists in the surrounding environment.
In the method of the invention, the background water management center analyzes, judges and decides whether to replace the prepaid metering water meter or decide whether to additionally install a check valve on an inlet pipeline of the prepaid metering water meter according to counting errors between pulse electronic accumulated count values and mechanical character wheel readings of the prepaid metering water meter in a plurality of recharging periods.
Compared with the prior art, the invention adopts the palm terminal to carry out wireless interconnection with the prepaid water meter and sends related data information to the background water management center through the Internet; the method can effectively solve the problem of unfairness brought to users by counting errors existing in different recharging periods of the electronic counting of the water meter and the reading of the mechanical character wheel; the palm terminal can enable a user to recharge on line, namely charge and use, so that the problems that the water purchasing of the user is limited by distance and time and the like are effectively solved.
Drawings
Fig. 1 is a block diagram of a prepaid water meter system according to the present invention.
Fig. 2 is a flow chart of a prepaid method of the prepaid water meter system of the present invention.
Fig. 3 is a schematic diagram of a main control MCU circuit of the prepaid metering water meter in the system of fig. 1.
Fig. 4 is a schematic circuit diagram of a pin exploded view of a main control MCU.
Fig. 5 is a schematic circuit diagram of a wireless communication module of the prepaid metering water meter of the system of fig. 1.
Fig. 6 is a schematic circuit diagram of a valve control module of the prepaid metering water meter of the system of fig. 1.
Fig. 7 is a schematic circuit diagram of a battery powered module of the prepaid metering water meter of the system of fig. 1.
Fig. 8 is a schematic circuit diagram of a battery voltage monitoring module of the prepaid metering water meter of the system of fig. 1.
Fig. 9 is a schematic circuit diagram of a buzzer prompt module of the prepaid metering water meter of the system of fig. 1.
Fig. 10 is a schematic circuit diagram of an electronic metering module of the prepaid metering water meter of the system of fig. 1.
Detailed Description
1. The invention relates to a prepaid water meter system based on the Internet of things
The technical conception of the prepayment water meter system can be applied to a prepayment system for fuel gas, electric power and the like. The following describes the present technical scheme in detail using a prepaid system for water as an example.
As shown in FIG. 1, the prepaid water meter system is composed of the Internet, a background water service management center, a palm terminal, a plurality of prepaid water meters and the like.
1. Prepayment metering water meter
The water meter is arranged at a user end and is an electromechanical integrated water meter, the water meter is used for metering the water consumption of a user, and the water meter is provided with a mechanical counting structure and an electronic counting structure, wherein the mechanical counting structure is a conventional water meter gear assembly.
The electronic counting structure (also called an electronic control module) of the prepaid metering water meter is provided with a main control MCU, a wireless communication module, a valve control module, a battery voltage monitoring module and a buzzer prompting module besides a conventional electronic metering module and a battery power supply module, wherein:
1) The master control MCU (see the figures 3 and 4) adopts a control chip with the model number MSP430FR6972 IRGC.
The method mainly aims at completing whole-table scheduling management such as communication storage, metering, low-power consumption management and the like, and comprises the following steps of:
a. an electronic accumulated count value (hereinafter referred to as a pulse electronic accumulated count value) for the water consumption described by the electronic metering module is stored.
b. When each new recharging period starts, the pulse electronic accumulated count value recorded at the end of the previous recharging period is corrected, and the prepaid metering water meter synchronously counts the mechanical character wheel reading and the pulse electronic accumulated count value of the prepaid metering water meter at the start of the new recharging period, so that the unfair phenomenon caused by electromechanical count errors in the previous recharging period to a user is eliminated.
c. The updated pulse electronic accumulated count value and the running state information (the running state information comprises state information such as battery voltage at a meter end, whether a valve is normal, whether magnetic field interference exists in the environment where the water meter is located or not) of the prepaid water meter are sent to a background water service management center through a wireless communication module, a palm terminal and the Internet;
d. and executing opening or closing of the valve control module to send out a correct operation instruction.
2) The wireless communication module (see fig. 5) adopts a bluetooth module of model number e66_v01.
The function is as follows:
a. the pulse electronic accumulated count value and the running state information of the prepaid metering water meter are uploaded to the handheld terminal and are transmitted to a background water service management center through a network, so that the Internet of things of the prepaid metering water meter is realized, and the prepaid metering water meter is convenient to repair, maintain and water service management company big data statistics and analysis.
b. And receiving the mechanical word read-in value of the prepaid water meter, which is acquired by the palm terminal through image recognition.
c. And receiving the water purchase quantity (called water pre-charge value for short) which is sent by the palm terminal and is charged by a user in a new charging period, wherein the previous charging period is used for the same user, and the supplemented pre-charge quantity of the user is received due to the errors of the pulse electronic accumulated count value and the mechanical word wheel reading value and is stored in the main control MCU.
3) The valve control module (see FIG. 6) uses a model SPX3010 chip.
The valve control module U4 controls the water valve of the prepayment metering water meter to be opened or closed, wherein a '22' foot (pin lead name is 'CTLON') and a '23' foot (pin lead name is 'CTLOFF') of the main control MCU are respectively connected with a '3' foot and a '2' foot of the valve control module.
The water valve is opened and closed by the following method:
a. closing valves (i.e. closing valves, caused by user arrears, depleted charges, or no-man use pauses)
The control "CTLOFF" is high (defined by man) and "CTLON" is low (defined by man).
b. Opening valves (i.e. opening the water valve, which is effected by user recharging)
The control "CTLOFF" is low and "CTLON" is high.
c. Checking (checking whether the valve is open, closed or in a normal state)
The main control MCU detects a valve in-place detection pin OFF-M (a 24 th pin of the main control MCU) connected with the valve control module and ON-M (a 25 th pin of the main control MCU), the 24 th pin of the main control MCU is connected with a 5 th pin of a motor driving chip of the valve control module, and the 25 th pin of the main control MCU is connected with a 4 th pin of the motor driving chip of the valve control module.
When the main control MCU detects that the 24 th foot is at a low level, the main control MCU judges that the valve closing is successful; when the '25' foot is detected to be at a low level, judging that the valve is successfully opened; if the '24' foot and the '25' foot are detected to be at the high level at the same time, the abnormal valve state is judged.
4) In the electronic metering module (see fig. 10), the parts marked as U10 and U11 in the figure are two magnetic sensors, and the magnetic sensors U10 and U11 generate pulse signals to collect the mechanical metering pointer rotation circle number pulses (the collection pins are PA and PB) of the prepaid metering water meter, so that electronic counting is realized.
The electronic metering module is responsible for realizing electromechanical signal conversion for metering. The main control MCU controls the power supply control pin VM-M (the '42' pin of the main control MCU) to supply power to the two paths of magnetic induction elements U10 and U11 simultaneously, the PA-M (the '43' pin of the main control MCU) and the PB-M (the '44' pin of the main control MCU) are respectively signal detection pins, and when the pointer rotates for one circle, the PA-M and the PB-M respectively detect low-level pulse signals in sequence for electronic metering.
The main control MCU detects an output signal pin PA-M (the 43 st pin of the main control MCU) and PB-M (the 44 th pin of the main control MCU) connected with the electronic metering module, and if the output signal pin PA-M and the PB-M are at a low level at the same time, the main control MCU judges that the surrounding environment has magnetic interference.
5) And the battery power supply module (see fig. 7) is used for supplying electric energy to the main control MCU, the wireless communication module, the valve control module and the electronic metering module.
The battery access point VBAT of the battery power supply module is connected with four pins DVCC1, DVCC2, DVCC3 and AVCC1 of a U1B chip (a filter circuit built in the main control MCU) shown in fig. 8 after being stabilized by a voltage stabilizing circuit, and then supplies power to the main control MCU after further filtering.
6) Battery voltage monitoring module
As shown in fig. 8, the battery voltage is monitored periodically, under-voltage occurs, and an alarm is given timely. That is, the master MCU enables battery voltage monitoring by controlling the BAT_EN (the "7" th pin of the master MCU) high level, and then samples the battery voltage through the BAT_DEC (the "30" th pin of the master MCU).
7) Buzzer prompt module
As shown in fig. 9, the user is prompted by warning information of the prepaid metering water meter, etc. in charge of completing the recharging success or failure.
2. Palm terminal
The mobile terminal provided with the prepaid application software (also called prepaid APP) can be a mobile phone, a tablet computer or a special mobile terminal configured by water service management personnel for users.
The palm terminal can be in wireless interconnection with the wireless communication module in the prepaid metering water meter by scanning an address code which is arranged on the prepaid metering water meter and represents the unique identity of the water meter. The address code may be a two-dimensional code, a bar code, or an RFID (radio frequency identification code).
The palm terminal is internally provided with image recognition software, and after the image recognition software is shot aiming at a mechanical character wheel reading window of the prepaid metering water meter, the palm terminal can convert a group of mechanical character wheel readings into digital information, send the digital information to the prepaid metering water meter and store the digital information in the main control MCU.
After the wireless interconnection of the palm terminal and the prepaid metering water meter is finished, a main control MCU in the prepaid metering water meter enables battery voltage monitoring by controlling BAT_EN high level, battery voltage is sampled by BAT_DE, voltage obtained by sampling is compared with an early warning lower limit value, an under-voltage alarm state is generated when the sampled voltage is lower than the lower limit value, the main control MCU detects in-place detection signal pins OFF-M and ON-M of a valve, if the detected signals are simultaneously high level, the abnormal valve state is judged, and if output signal pins PA-M and PB-M level signals of sensors U10 and U11 of the main control MCU detect metering module are simultaneously low level, namely, two magnetic sensor signals simultaneously detect magnetic signals, the environment magnetic interference state is judged; after the state detection is completed, the wireless communication module in the prepaid metering water meter sends running state information of the prepaid metering water meter, including a battery under-voltage state, a valve abnormal state and an environment magnetic interference state, to the background water service management center.
3. Internet network
May be one or more of an intranet, a Local Area Network (LAN), a Wide Area Network (WAN), a wireless network, a fibre channel based Storage Area Network (SAN), and an ethernet network. The function is to interconnect the information of the prepaid water meter, the palm terminal and the background water management center.
4. And the background water management center.
And performing supervision, management, maintenance and operation on the use states, recharging management and data statistics of a plurality of prepaid metering water meters in the Internet of things.
The background water management center decides whether to replace the prepaid metering water meter according to the counting error between the pulse electronic accumulated counting value and the mechanical character wheel reading value of the prepaid metering water meter in a plurality of recharging periods, or a check valve is additionally arranged in front of the prepaid metering water meter, so that the problem of larger metering error of an electronic metering module caused by water hammer or pipe network pressure shortage and water meter inversion is solved.
The prepayment water meter system of the invention has the following advantages:
1) The base number (namely, the pulse electronic accumulated count value and the mechanical character wheel reading) is timely synchronized, the mechanical character wheel reading of the water meter window is obtained after the photo image processing is carried out when the palm terminal is charged each time, the base number is set to the meter end through wireless communication, the electronic reading (namely, the pulse electronic accumulated count value) and the window reading (namely, the mechanical character wheel reading) are timely synchronized, and the problem of accumulated error of the IC card water meter is solved;
2) On-line recharging, a user pays on line through the palm terminal, namely, recharging is used immediately, so that the user can recharge quickly, and the problems that the water purchasing distance and time of the user are limited are solved;
3) The user is bound, the user adopts a palm terminal to scan a two-dimensional code, a bar code or an RFID of the surface plate, so that the binding between the terminal user and the water meter is realized, and the problem of water selling fraud is avoided;
4) The meter end data and the state information are timely uploaded to the background when the prepaid metering water meter of the Internet of things is recharged, so that financial settlement and big data management of a water meter are facilitated, remote water meter consumption reading and remote running state monitoring are realized, and the water meter is convenient to overhaul, maintain and maintain the fault meter in time;
5) The cost performance is higher, the prepaid metering water meter does not need an IC card, a card reader and an LCD, and the cost is lower;
6) The consumption information is queried timely, a user can query the bound water meter through the palm terminal at any time, query the information such as the water consumption, the historical consumption and the residual consumption, and the like, and the transparency of the water selling management is improved.
7) Big data analysis improves user experience, and when the user charges electromechanical synchronization at every turn, the backstage all records its current electromechanical error and state information, and to the great user of mechanical reading and electronic reading phase difference that appears many times, the suggestion is installed the check valve before the table, if the battery is under-voltage then arranges the maintainer and in time changes the battery, improves user experience, solves the IC-card water gauge and leads to the untimely problem of troubleshooting because of state and table reading can not go up the conduction.
8) If the electronic metering value at the meter end and the mechanical character wheel count value of the prepaid metering water meter are in positive or negative deviation due to the phenomena of insufficient pipeline pressure, water hammer, autorotation and the like, the prepaid metering water meter can correspondingly close the valve in advance or postpone according to the amount of the user's prepaid water, namely, the prepaid metering water meter is buckled more or less to the user's prepaid water meter; when the user executes the next prepaid recharge, the palm terminal acquires the mechanical character wheel count value of the prepaid metering water meter, and the prepaid metering water meter is obtained after the mechanical character wheel count value of the last period and the pre-recharge water quantity of the last period are compared, and the prepaid metering water meter is charged with the prepaid recharge water quantity and the pre-recharge water quantity of the current period by the palm terminal at the moment, so that the problem of unfair consumption of the user caused by electromechanical errors is thoroughly solved.
2. The invention relates to a prepayment method based on an internet of things water meter system
The prepaid water meter system based on the Internet of things, disclosed by the invention, is used for prepaid (see the figure 2) according to the following steps:
1) Wake up the prepaid metering water meter to be recharged
The main control MCU (marked as U1A in fig. 3) is powered on to initialize the electronic metering module (namely the METER metering part) and the wireless communication module U5, and then enters a low-power consumption power-saving state.
A user or manager adopts a palm terminal which downloads a prepaid APP and comprises a mobile phone and a special mobile terminal to scan an address code of a prepaid metering water meter which comprises a two-dimensional code, a bar code or a bound RFID printed on a dial plate, obtain related information such as the address code and pair the information so as to complete wireless interconnection between the palm terminal and the prepaid metering water meter;
2) Data exchange
The prepaid metering water meter transmits the accumulated pulse electronic accumulated count value stored in the prepaid metering water meter at the end of the last recharging period to the palm terminal according to the running state information such as the battery voltage state, the valve state, the environment magnetic interference state and the like of the meter end;
the handheld terminal photographs the current mechanical character wheel reading on the window of the prepaid metering water meter, extracts the mechanical character wheel reading of the prepaid metering water meter end from the picture through image recognition software in the handheld terminal, and transmits the mechanical character wheel reading to the prepaid metering water meter in digital information;
3) Correcting the electronic count value to ensure the synchronization of electromechanical count
The main control MCU in the prepaid metering water meter updates the accumulated pulse electronic accumulated count value at the end of the last recharging period into the current mechanical character wheel reading acquired from the palm terminal through the wireless communication module, and the updated pulse electronic accumulated count value is used as the initial pulse electronic accumulated count value in the new recharging period;
4) Recharging method
The method comprises the steps that a palm terminal obtains a mechanical character wheel reading of the prepaid metering water meter, the prepaid metering water meter is obtained after the mechanical character wheel reading is compared with the previous mechanical character wheel reading and the previous pre-filling water amount, the prepaid metering water meter is filled with the prepaid metering water meter together with the user pre-filling water amount of the current period at the moment, and a buzzer sounds to prompt after the water at the meter end is filled successfully;
5) Starting prepaid metering water meter
The main control MCU controls the valve to act correctly according to the storage of the water consumption pre-charge, the water meter supplies water normally, and sends out an instruction for starting the operation of the pre-payment metering water meter to the valve control module, and meanwhile, the electronic metering module in the pre-payment metering water meter counts electronically on the basis of the pulse electronic accumulated count value corrected in the '3)' point;
6) Updating related data of background water management center in time
And sending the updated pulse electronic accumulated count value and the state information of the meter end to a background water affair management center through a wireless communication module, a palm terminal and the Internet.
Claims (8)
1. The utility model provides a prepayment water meter system based on thing networking, includes that a plurality of installs at the user end and for electromechanical integrated prepayment metering water meter, palm terminal, internet and backstage water management center, its characterized in that: the electric control module of the prepaid metering water meter consists of a main control MCU, a wireless communication module, a valve control module, an electronic metering module and a battery power supply module, wherein,
the wireless communication module is matched and interconnected with a Bluetooth module arranged in the palm terminal; the wireless communication module sends the pulse electronic accumulated count value stored in the main control MCU at the end of the last period to the palm terminal, and simultaneously receives the mechanical character wheel reading and the new water pre-charge value of the charging period, which are displayed on the window of the prepaid metering water meter and are obtained by photographing, of the palm terminal, and stores the mechanical character wheel reading and the water pre-charge value into the main control MCU;
the palm terminal sends the pulse electronic accumulated count value, the mechanical character wheel reading and the water consumption pre-charge value at the end of the previous period to a background water management center through the Internet;
the main control MCU stores the pulse electronic accumulated count value recorded by the electronic metering module in real time and updates the pulse electronic accumulated count value at the end of the previous recharging period to the mechanical character wheel reading at the end of the previous recharging period when a new recharging period is started; after the recharging is successful, the main control MCU sends an instruction for starting the prepaid metering water meter to work to the valve control module;
the valve control module is used for controlling the opening or closing of a water valve of the prepaid metering water meter;
and the electronic metering module is used for collecting pulse signals generated when the mechanical counting pointer of the prepaid metering water meter rotates so as to obtain the pulse electronic accumulated count value.
2. The internet of things-based prepaid water meter system of claim 1, wherein: the prepayment metering water meter is also provided with a battery voltage monitoring module for monitoring a battery in the battery power supply module, and the wireless communication module can send running state information comprising battery state, valve state and environmental magnetic interference to a background water service management center.
3. The internet of things-based prepaid water meter system of claim 1, wherein: and a buzzer prompting module for prompting whether recharging is successful or not is also arranged in the prepaid metering water meter.
4. The internet of things-based prepaid water meter system of claim 1, wherein: the main control MCU adopts a chip with the model of MSP430FR6972 IRGC; the wireless communication module mainly adopts a Bluetooth module with the model of E66_V01; the valve control module mainly adopts a chip with the model of SPX 3010.
5. A prepayment method based on the internet of things water meter system, adopting the internet of things-based prepayment water meter system as set forth in any one of claims 1-4, and prepayment according to the following steps:
1) Wake up the prepaid metering water meter to be recharged
A user or manager adopts a palm terminal which is downloaded with a prepaid APP and comprises a mobile phone and a special mobile terminal to scan an address code of a prepaid metering water meter which comprises a two-dimensional code printed on the meter, a bar code or an RFID bound on the water meter, obtain relevant information of the address code and pair and interconnect the information with a wireless communication module in the prepaid metering water meter;
2) Data exchange
The prepayment metering water meter transmits the pulse electronic accumulated count value stored in the prepayment metering water meter at the end of the last recharging period and the running state information comprising the battery voltage state, the valve state and the environment magnetic interference state of the meter end to the palm terminal;
the hand-held terminal photographs the mechanical character wheel reading at the end of the last recharging period displayed on the window of the prepaid metering water meter, converts the mechanical character wheel reading into corresponding digital information through image recognition software and transmits the digital information to the prepaid metering water meter;
3) Correcting the electronic storage counting base number to ensure electromechanical metering synchronization of the prepaid metering water meter;
the main control MCU in the prepaid metering water meter updates the pulse electronic accumulated count value at the end of the previous recharging period into the mechanical character wheel reading at the end of the previous recharging period, and the updated value is used as the pulse electronic accumulated count value at the initial of the new recharging period;
4) Recharging method
The method comprises the steps that a palm terminal is adopted to send the water pre-charge quantity required to be used in a new recharging period to a prepaid metering water meter, recharging is completed, and a buzzer arranged in the prepaid metering water meter sounds to prompt;
5) Starting prepaid metering water meter
The main control MCU controls the valve to act correctly according to the stored water pre-charge value, the water meter supplies water normally, and meanwhile, an electronic metering module in the pre-payment metering water meter performs electronic accumulated counting on the basis of the initial pulse electronic accumulated counting value;
6) Updating the related data of the background water management center in time;
and sending the updated pulse electronic accumulated count value, the water consumption pre-charge value and the running state information to a background water service management center through a wireless communication module, a palm terminal and the Internet.
6. The prepayment method based on the internet of things water meter system according to claim 5, wherein: whether the valve state is normal or not is judged by the following method:
1) The palm terminal and the prepaid metering water meter are in wireless pairing and interconnection;
2) The main control MCU detects the in-place detection pins OFF-M and ON-M of the valve connected with the valve control module, and if the detection pins OFF-M and ON-M are at high level at the same time, the abnormal state of the valve is judged.
7. The prepayment method based on the internet of things water meter system according to claim 5, wherein: whether the environment magnetic interference state is normal or not is judged by the following method:
1) The palm terminal and the prepaid metering water meter are in wireless pairing and interconnection;
2) And the main control MCU detects output signal pins PA-M and PB-M connected with the electronic metering module sensor, and if the output signal pins PA-M and PB-M are at low level at the same time, the main control MCU judges that the magnetic interference phenomenon exists in the surrounding environment.
8. The prepayment method based on the internet of things water meter system according to claim 6 or 7, wherein: the background water management center analyzes, judges and decides whether to replace the prepaid metering water meter or whether to additionally install a check valve on an inlet pipeline of the prepaid metering water meter according to counting errors between pulse electronic accumulated count values and mechanical character wheel readings of the prepaid metering water meter in a plurality of recharging periods.
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| CN112002066B (en) * | 2020-08-28 | 2022-06-17 | 湖北骏翔电子科技有限公司 | Double-reed-tube counting device based on timed interruption triggering |
| CN113079222B (en) * | 2021-06-07 | 2021-09-03 | 深圳市捷先数码科技股份有限公司 | Internet of things system for water meter management |
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