CN109798947A - A kind of narrowband NB-IOT communication module group and its application method for ultrasonic wave gas meter - Google Patents
A kind of narrowband NB-IOT communication module group and its application method for ultrasonic wave gas meter Download PDFInfo
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- CN109798947A CN109798947A CN201711119800.5A CN201711119800A CN109798947A CN 109798947 A CN109798947 A CN 109798947A CN 201711119800 A CN201711119800 A CN 201711119800A CN 109798947 A CN109798947 A CN 109798947A
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Abstract
A kind of narrowband NB-IOT communication module group and its application method for ultrasonic wave gas meter is a kind of by gas meter, flow meter supersonic wave metering modular program, detect signal equivalent program, IC card fetch module and program, interface and program can be expanded, valve control module, ladder gas price accounting module, combustion gas uses secure smartcard module, fuel gas alarm connects message processing module, reversed installation alarm module, surreptitiously gas alarm module forms, data communication protocol module and program and NB-IOT communication function are integrated into the dedicated NB mould group of gas meter, flow meter of a chip one, the present invention has clear principle, it is easy to use, it is low in energy consumption, it is small in size, the advantages that reliability is higher, all there is stronger Practical significance in ultrasonic wave gas meter field.At high cost existing for Internet of Things ultrasonic wave gas meter for previous NB module composition, the problems such as covering surface is few, connection number is few, is made that improvement.
Description
Technical field
The present invention relates to a kind of gas meter, flow meter mould groups, logical more particularly to a kind of narrowband NB-IOT for ultrasonic wave gas meter
Interrogate mould group and its application method.
Background technique
The professional standard (R13 a part) of NB-IOT has been formulated in 3GPP meeting in 2016, and in the commercial mould of release in 2017
Group, and the GPRS technology netted according to the 3GPP agreement of NB-IOT, traditional Internet of Things transmission using 2G, due to its transmission power
Greatly, power consumption is big, and link operation is not high enough causes its area coverage narrow, and at high cost, power consumption is big, it is difficult to meet ultrasonic wave gas meter
It is powered using battery, the technical requirements of operation 10 years.
Problem above can solve using Internet of Things NB-IOT mechanics of communication, this is a novel branch art and product, and mesh
It is preceding it is domestic and international using NB-IOT module as the application method of the traditional 2G GPRS communication module netted, only by NB-IOT mould
Block come regard communication component come using, thus only ultrasonic wave gas meter MCU micro energy lose processor constitute ultrasonic wave combustion
Affix NB-IOT communication module constitutes ultrasonic wave gas meter on gas meter control panel, and ultrasonic wave gas meter in this way removes
Need outside NB-IOT module, it is also necessary to a MCU ultrasonic wave gas meter control panel come realize metering and billing function, valve control function
Energy, thief-proof function, IC card read-write capability, battery voltage detection function, data storage function and data encryption feature etc., thus
Bring high cost, the problems such as structure is complicated, high power consumption.In order to meet Internet of Things ultrasonic wave gas meter, small power consumption, city at low cost
A kind of field demand, it is desirable to provide novel NB-IOT ultrasonic wave combustion for integrating ultrasonic wave gas table function and NB-IOT communication module group
Gas meter die for special purpose group.
Summary of the invention
Goal of the invention is to provide one in a kind of MCU that multiple ARM using inside NB-IOT modem are constituted
A ARM core is defined as ultrasonic wave gas meter ARM, by gas metering billing function module, valve control function module, voltage detecting
Functional module, IC card read-write capability functional module, data storage function module, thief-proof functional module, data-transformation facility mould
Block, liquid-crystal data display module etc. are realized in ARM and are integrated with NB-IOT modem chip, in Internet of Things ultrasound
Wave gas meter, flow meter apparently just as an independent ultrasonic wave gas meter MCU, realizes ultrasonic wave gas meter repertoire, and energy
Enough complete NB-IOT communication function, the dedicated NB-IOT communication module group of ultrasonic wave gas meter be not necessarily to outside NB-IOT communication module group it is attached its
He is MCU, the Internet of Things ultrasonic wave that the present invention solves present MCU ultrasonic wave gas meter control panel and NB-IOT communication module group is constituted
Gas meter, flow meter, it is at high cost, structure is complicated, power consumption is big, and battery is at high cost the problems such as.
A kind of narrowband NB-IOT communication module group and its application method for ultrasonic wave gas meter, comprising: signal power is put
Big circuit, filter, duplexer switch, NB-IOT modem, SIM card interface module, definition ultrasonic wave gas meter ARM,
Data storage function module, battery capacity detection function module, ultrasonic wave gas meter metering module data read out function module, inspection
Survey signal equivalent output function module, IC card read functional module, can expand functional module interface, valve control function module,
Ladder gas price billing function module, combustion gas connect information processing function module using safety monitoring function module, fuel gas alarm, steal
Gas warning function module, reversed installation warning function module, liquid-crystal data display function module, data safety encrypting and decrypting function
Module etc. is constituted.
The present invention is characterized in that ultrasonic wave gas meter MCU is an ARM core by the inside of NB-IOT modem
And the resource compositions such as program storage, memory array I/O interface.
It is a feature of the present invention that the repertoire of this ultrasonic wave gas meter is by the money on the ARM in NB modem
Source is realized.
According to preceding feature, it is a feature of the present invention that ultrasonic wave gas meter data-transformation facility is by NB-IOT tune
The data for the ultrasonic wave gas meter ARM that ARM is defined in the data-interface of modulator-demodulator, control interface and NB modem
One control interface of interface and communications protocol and program are constituted, and realize Communication Control and data-transformation facility；The inspection of voltage electricity
Brake is by the data-interface and voltage detector and brownout processing routine in the ultrasonic wave gas meter ARM core that defines
It constitutes, realizes voltage detecting function and cell voltage power down process function；Supersonic wave metering function is by the ultrasonic wave gas that defines
Multiple data-interfaces in Table A RM core are connect with supersonic wave metering module and Communication processing program is constituted, and realize supersonic wave metering
Function；Valve control function is defined as valve driving interface and valve by an interface in the ultrasonic wave gas meter ARM core that defines
Gate driver is connected, and the switching function of valve is realized by valve door control program.
It is a feature of the present invention that ultrasonic wave gas meter function of measuring module is stored by the ultrasonic wave gas meter ARM defined
The metering processing routine and time difference method supersonic wave metering module I/O Interface that program storage is stored in device are completed to metering module
Communication realize supersonic wave metering function.
It is a feature of the present invention that ultrasonic wave gas meter IC card reads functional module by the ultrasonic wave gas meter ARM that defines
The IC card I/O interface of IC card read-write program and definition that program storage is stored in memory is completed the read-write to IC card and is come in fact
Existing pre paid functionality, the function can also be realized by the NFC chip and program that above-mentioned I/O interface is connected.
The present invention is characterized in that an I2C interface in the ultrasonic wave gas meter ARM core of definition is defined as display interface
With liquid crystal driver, liquid crystal display is connected, for showing Internet of Things ultrasonic wave gas meter under display driving software driving
Gas consumption, instantaneous flow, pre-pay amount, ladder gas price, valve state, battery capacity, NB network signal intensity information etc. are aobvious
Show function.
The present invention is characterized in that an I/O interface is defined as gas leakage report in the ultrasonic wave gas meter ARM core of definition
Alert device interface is connected with gas leakage alarm, realizes leakage alarm function together by gas leakage alert process program.
It is a feature of the present invention that definition ultrasonic wave gas meter ARM nuclear memory storage steal gas disposal program according to
The acoustic velocity value variation of medium carries out surreptitiously gas judgement and realizes anti-theft function in table after temperature-compensating.
It is a feature of the present invention that the detection signal equivalent processing of the ultrasonic wave gas meter ARM nuclear memory storage of definition
The output of detection signal equivalent is realized in driving LED circuit work after the continuous data calculating that program is obtained according to communication is judged
Function.
It is a feature of the present invention that the reversed installation alert program of the ultrasonic wave gas meter ARM nuclear memory storage of definition
Judgement, which is carried out, according to ultrasonic wave upstream and downstream time-of-flight values realizes the warning function reversely installed.
Of the invention to be further characterized in that, the data processing of the program storage in the ultrasonic wave gas meter ARM core of definition passes
Defeated program uses destiny evidence for accumulative, with throughput data, instantaneous flow data, metering and billing data, ladder dosage progressive price
Data, take the amount of money in advance, valve status data, battery capacity data, NB signal strength data, and leak alarm state is surreptitiously vaporous
State, the data such as reversed installation condition encrypt data by data safety encrypting and decrypting functional module, are packaged, pass through NB
Modem carries out wireless signal modulation by power amplifier antenna, by data line wireless network transmissions to backstage, in fact according to NB agreement
Existing table has data-transformation facility.
The encryption mechanism of the invention for being further characterized in that data safety encrypting and decrypting functional module is different from NB modulation /demodulation
The data of device are eated dishes without rice or wine encryption safe mechanism, but are encrypted by fuel gas communication agreement, this function is by data encryption algorithm reality
It is existing, it is stored in the ultrasonic wave gas meter ARM of definition.
The data receiver processing of memory storage in the ultrasonic wave gas meter ARM core of the invention for being further characterized in that definition
NB modem is decrypted program from the data that the wireless signal that the received wireless network of antenna is sent demodulates, solution
Analysis is realized two-way data communication and is controlled the ultrasonic wave gas meter ARM of definition, completes every function of ultrasonic wave gas meter
Energy.
Module is completed the initialization of NB modem by the ARM chip on NB-LOT chip after powering on, modulated in NB
The ready state of demodulator, and module power on after define ultrasonic wave gas meter ARM initialization program be first carried out, respectively include
Data storage function module initialization, the module initialization of battery capacity detection function, gas meter, flow meter function of measuring module communication serial ports
Initialization, the module initialization of IC card read functions, combustion gas use safety monitoring function module initialization, and fuel gas alarm connects information
Processing function module initialization, Liquid Crystal Module initialization.
Initialization program executes system clock configurator after being finished, and configures by system clock and completes internal need
At the beginning of port configuration, WatchDog Timer time set, external memory needed for each function is completed in time clock feature, port initialization
Beginningization and reading parameter.Single-chip microcontroller, which enters, later opens wake-up to be interrupted, the program such as global interrupt low power consumpting state and enters thing
In number of packages group judgement circulation, when interrupting, program, which is jumped out, is recycled into interruption determining program, and judging rear program can root
According to interruption particular content respectively to measurement data acquisition, data upload, undervoltage warning, steal device alarm, reversed installation alarm, leakage
The event flag position of the functions such as gas alarm, controlled valve is modified, and interruption is jumped out after change according to flag bit and carries out correlation
Event action.Single-chip microcontroller first determines whether interrupt type when being interrupted wake-up, pass through again if it is external interrupt judgement it is specific which
A port, which is caused, interrupts, and the event flag position of correlation function is arranged, principal function can be according to flag bit completion pair after jumping out interruption
Answer Event Function.Mainly there are battery capacity detection function, gas meter, flow meter supersonic wave metering serial ports by the function that external interrupt triggers
Communication function, IC card read functions, combustion gas use safety monitoring function, surreptitiously gas warning function.When timer interruption occurs for program
When, correlation function can be executed according to certain time interval, whether the time for comparing the interruption moment is identical as the preset function time,
The event flag position of correlation function is if the same set, and principal function can complete corresponding event function according to flag bit after jumping out interruption
Energy.When the time reaching preset uplink time, NB-IOT modem is powered on, and executes initialization program, ultrasonic wave combustion
Gas meter ARM core can then communications protocol by NB modem upload a data to cloud backstage.If Programmable detection goes out
It is under-voltage, when stealing the abnormal phenomenon such as gas, gas leakage, program, which will do it, alarms and uploads a data by NB-IOT modulation /demodulation module
Remind user.System will do it the diagnosis of primary system internal state, judgement at regular intervals in timer interruption simultaneously
Whether each functional unit normally starts, and whether each expansion mouth is applied.If there is there is abnormal, ultrasound in certain functional units
Wave gas meter, flow meter ARM core then communications protocol can upload a data by NB modem and notify related personnel to cloud backstage
Repair operation.Module enters dormant state and opening timing device if each functional unit normally starts, when module is listened to
Module can be waken up when the wakeup time of the message or program setting that send to the base station NB reaches, after mould group is waken up,
Each working cell is started to work, and wherein NB-IOT demodulation module is transferred data to after demodulating to signal by Serial Port Line
The ultrasonic wave gas meter ARM of definition carries out valve control, and the ultrasonic wave gas meter ARM of definition extracts calculative data transmission
To the data-interface of NB modem, data are sent to NB modem by data line, NB modem will be defeated
Signal out is sent to host computer through equipment such as wave filter duplexer switch antennas and is parsed.
The beneficial effects of the present invention are: by being realized using an ARM core inside NB-IOT modem to super
The metering of sound wave gas meter, flow meter, Communication Control, design.And the present invention is a kind of by gas meter, flow meter supersonic wave metering modular program, detection
Signal equivalent program, IC card fetch module and program can expand interface and program, valve control module, ladder gas price charging mould
Block, combustion gas connect message processing module using secure smartcard module, fuel gas alarm, reversely install alarm module, surreptitiously gas alarm mould
Block composition, data communication protocol module and program and NB-IOT communication function are integrated into the dedicated NB of gas meter, flow meter of a chip one
Mould group, the present invention have clear principle, have easy to use, low in energy consumption, small in size, the advantages that reliability is higher, for ultrasound
Wave gas meter, flow meter field all has stronger Practical significance.Existing for Internet of Things ultrasonic wave gas meter for previous NB module composition
At high cost, the problems such as covering surface is few, connection number is few, is made that improvement.
Detailed description of the invention
Fig. 1 is the NB-IOT ultrasonic wave gas meter structural block diagram of ordinary construction
Fig. 2 is structural block diagram of the invention
Fig. 3 is internal structure block diagram of the invention
Fig. 4 is program flow diagram of the invention.
In Fig. 1: signal power amplifying circuit 1, filter 2, duplexer switch 3, ultrasonic wave gas meter ARM 4, data storage
Functional module 5, battery capacity detection function module 6, NB-IOT modem 7, SIM card interface module 8, gas meter, flow meter ultrasonic wave
Function of measuring module 9, detection signal equivalent functional module 10, IC card read functions module 11, can expand functional module interface 12,
Valve control function module 13, ladder gas price billing function module 14, combustion gas use safety monitoring function module 15, gas alarm
Device connects information processing function module 16, steals gas warning function module 17, reversed installation warning function module 18, antenna 19, power supply
20, valve 21, liquid-crystal data display function module 22, data safety encrypting and decrypting functional module 23, RF transceiver 24, base band
Chip 25.
Specific embodiment
The signal that serial ports of the present invention receives is sent to NB-IOT modem 7 and demodulates data, modulates through NB-IOT
The data-interface of demodulator 7 is sent to the ultrasonic wave gas meter ARM4 of definition, and the ultrasonic wave gas meter ARM4 of definition receives data
It is decrypted by data safety encrypting and decrypting functional module, is then parsed according to data command and content by each function mould afterwards
Block, which executes, is packaged the instructions such as communications protocol, is sent the data to and is determined by data acquisition module when needing to upload all data
The ultrasonic wave gas meter ARM4 of justice will be encoded these data, after modulation by NB-IOT modem 7 by data processor
Signal sent by serial ports.Data are passed through definition by the ultrasonic wave gas meter ARM4 onboard data security module of definition
Encryption Algorithm in ultrasonic wave gas meter ARM4 carries out cryptographic calculation to data, can effectively guarantee the safety of data in this way
Property, so that the data safety of user is protected.Processing is parsed encrypted data and sent by the ultrasonic wave gas meter ARM4 of definition
Storage operation is carried out to data memory module 5.The ultrasonic wave gas meter ARM4 of definition may further be used to control each module simultaneously；Equally
The ultrasonic wave gas meter ARM4 and decryption program of definition encrypt the data in ultrasonic wave gas meter, by the ultrasonic wave defined
Gas meter, flow meter ARM and data-interface are transferred to NB modem digital interface, it is modulated after signal send cloud to through serial ports
From the background, it is embedded in charging accounting procedure, step-by-step counting program in the ultrasonic wave gas meter ARM4 of definition, what is in addition to this defined is super
Sound wave gas meter, flow meter ARM4 is also embedded in control field algorithms most in use.Battery capacity detection function module interface and program are to power supply electricity
Amount is detected, and realizes battery capacity real-time monitoring and control and cell voltage power down process function；Supersonic wave metering functional module
Interface and program are used to acquire the order data of metering module；Detect the continuous data meter that signal equivalent module is obtained according to communication
LED periodicity active light-emitting function is realized in the work of driving LED circuit after calculation is judged；Valve control function module and program can
To carry out switch operation to valve when valve needs to switch by control valve driving circuit；IC card read functions module interface
And program is for reading IC card order data, realizes to the supplementing with money of gas meter, flow meter, readjusts prices, data feedback etc.；Liquid-crystal data shows function
Energy module and program can realize the information such as user's gas data information, prepayment information, pricing information, gas meter, flow meter operating status
Display is, it can be achieved that abnormal alarm information alert and display function；Combustion gas can be real using safety detection function module interface and program
Now in gas meter, flow meter use process super large stream, constant current, extra small stream real time monitoring, in conjunction with valve control realize safety use
Gas can be issued wireless messages by NB module when there is safety problem, then be handled by cloud and propose information warning and be pushed to use
The mobile client at family；Surreptitiously gas warning function module and program are, it can be achieved that include but is not limited to intensive magnetism attack, external force to gas meter, flow meter
The record of the processes such as impact, nonconventional approaches unlatching gas meter housing and alarm simultaneously send the data to cloud prompt alarm；Instead
Alarm indication is carried out to installation warning function module and program, it can be achieved that reversely installing to gas meter, flow meter and identifying and trigger liquid crystal；Rank
Terraced gas price billing function module and program ladder meterage is realized using price to combustion gas, it can be achieved that temporally, it is according to quantity etc. more
Group progressive price scheme is, it can be achieved that positive ladder and negative ladder；Supersonic wave metering uses time difference method principle, that is, passes through ultrasonic wave transducer
Device measures the upstream and downstream flight time of ultrasonic wave in the medium, obtains the flow speed value of gas, flow speed value and gas by formula operation
The product of road sectional area obtains the flow value of gas, then obtains the device gas value of combustion gas by the integral of time；SIM card connects
Mouth functional module and program are connected up to by SIM card corresponding with NB module communication foot is written and read realization to SIM card information
The registration and management of communication network；Functional module interface can be expanded and provide spare interface, it can be achieved that using function for later new demand
The extension of energy and the upgrading of technical solution.
Module is completed the initialization of NB modem by the SOC on NB-LOT chip after powering on, be in NB modulation /demodulation
The ready state of device, and module power on after define ultrasonic wave gas meter ARM initialization program be first carried out, respectively include data
Memory function module initialization, the module initialization of battery capacity detection function, gas meter, flow meter function of measuring module communication serial ports are initial
Change, the module initialization of IC card read functions, combustion gas use safety monitoring function module initialization, and fuel gas alarm connects information processing
Functional module initialization, Liquid Crystal Module initialization.
Initialization program executes system clock configurator after being finished, and configures by system clock and completes internal need
At the beginning of port configuration, WatchDog Timer time set, external memory needed for each function is completed in time clock feature, port initialization
Beginningization and reading parameter.Single-chip microcontroller, which enters, later opens wake-up to be interrupted, the program such as global interrupt low power consumpting state and enters thing
In number of packages group judgement circulation, when interrupting, program, which is jumped out, is recycled into interruption determining program, and judging rear program can root
According to the particular content measurement data acquisition of interruption, data upload, undervoltage warning, steal device alarm, reversed installation alarm, controlled valve
Etc. the event flag positions of functions be modified, interruption is jumped out after change according to flag bit and carries out relevant event action.Monolithic
Machine first determines whether interrupt type when being interrupted wake-up, passes through which specific port of judgement causes interruption again if it is external interrupt,
The event flag position of correlation function is set, and principal function can complete corresponding Event Function according to flag bit after jumping out interruption.Pass through
The function of external interrupt triggering mainly has battery capacity detection function, gas meter, flow meter supersonic wave metering serial communication function, IC card to read
It takes function, combustion gas using safety monitoring function, steal gas warning function, reversed anti-dress warning function.When program occurs in timer
When disconnected, correlation function can be executed according to certain time interval, compare interrupt the moment time whether with preset function time phase
Together, the event flag position of correlation function is if the same set, and principal function can complete corresponding thing according to flag bit after jumping out interruption
Part function.When the time reaching preset uplink time, NB-IOT modem is powered on, and executes initialization program, ultrasound
Wave gas meter, flow meter ARM core can then communications protocol by NB modem upload a data to cloud backstage.If program is examined
Measure it is under-voltage, when stealing the abnormal phenomenon such as gas, gas leakage, program, which will do it, alarms and uploads one by NB-IOT modulation /demodulation module
Data prompts user.System will do it the diagnosis of primary system internal state at regular intervals in timer interruption simultaneously,
Judge whether each functional unit normally starts, whether each expansion mouth is applied.If there is there is exception in certain functional units,
Ultrasonic wave gas meter ARM core can then communications protocol by NB modem upload a data notify to cloud backstage it is related
Personnel repair operation.Module enters dormant state and opening timing device if each functional unit normally starts, and works as module
Module can be waken up when listening to the wakeup time arrival of message or program setting that the base station NB is sent, when mould group is waken up
Afterwards, each working cell is started to work, and is passed data by Serial Port Line after wherein NB-IOT demodulation module demodulates signal
The ultrasonic wave gas meter ARM for giving definition carries out valve control, and the ultrasonic wave gas meter ARM of definition extracts calculative data
It is transferred to the data-interface of NB modem, data are sent to NB modem, NB modem by data line
The signal of output is sent to host computer through equipment such as wave filter duplexer switch antennas to parse.
Claims (14)
1. the present invention is characterized in that ultrasonic wave gas meter MCU be by the inside of NB-IOT modem an ARM core and
The resource compositions such as program storage, memory array I/O interface.
2. it is a feature of the present invention that the repertoire of this ultrasonic wave gas meter is by the resource on the ARM in NB modem
To realize.
3. according to preceding feature, it is a feature of the present invention that ultrasonic wave gas meter data-transformation facility is modulated by NB-IOT
The data for the ultrasonic wave gas meter ARM that ARM is defined in the data-interface of demodulator, control interface and NB modem connect
One control interface of mouth and communications protocol and program are constituted, and realize Communication Control and data-transformation facility；Voltage electric power detection
Function is by the data-interface and voltage detector and brownout processing routine structure in the ultrasonic wave gas meter ARM core that defines
At realization voltage detecting function and cell voltage power down process function；Supersonic wave metering function is by the ultrasonic wave gas meter that defines
Multiple data-interfaces in ARM core are connect with supersonic wave metering module and Communication processing program is constituted, and realize supersonic wave metering function
Energy；Valve control function is defined as valve driving interface and valve by an interface in the ultrasonic wave gas meter ARM core that defines
Driver is connected, and the switching function of valve is realized by valve door control program.
4. it is a feature of the present invention that ultrasonic wave gas meter function of measuring module is by the ultrasonic wave gas meter ARM memory that defines
In be stored in the metering processing routine of program storage and time difference method supersonic wave metering module I/O Interface is completed to metering module
Communication is to realize supersonic wave metering function.
5. being deposited it is a feature of the present invention that ultrasonic wave gas meter IC card reads functional module by the ultrasonic wave gas meter ARM defined
The IC card I/O interface of IC card read-write program and definition that program storage is stored in reservoir completes the read-write to IC card to realize
Pre paid functionality, the function can also be realized by the NFC chip and program that above-mentioned I/O interface is connected.
6. the present invention is characterized in that definition ultrasonic wave gas meter ARM core in an I2C interface be defined as display interface with
Liquid crystal driver, liquid crystal display are connected, for showing the use of Internet of Things ultrasonic wave gas meter under display driving software driving
Tolerance, instantaneous flow, pre-pay amount, ladder gas price, valve state, battery capacity, the display such as NB network signal intensity information
Function.
7. the present invention is characterized in that an I/O interface is defined as gas leakage alarm in the ultrasonic wave gas meter ARM core of definition
Device interface is connected with gas leakage alarm, realizes leakage alarm function together by gas leakage alert process program.
8. it is a feature of the present invention that the ultrasonic wave gas meter ARM nuclear memory storage of definition steals gas disposal program according to temperature
The acoustic velocity value variation of medium carries out surreptitiously gas judgement and realizes anti-theft function in table after degree compensation.
9. it is a feature of the present invention that the detection signal equivalent of the ultrasonic wave gas meter ARM nuclear memory storage of definition handles journey
The output work of detection signal equivalent is realized in driving LED circuit work after the continuous data calculating that sequence is obtained according to communication is judged
Energy.
10. it is a feature of the present invention that the reversed installation alert program root of the ultrasonic wave gas meter ARM nuclear memory storage of definition
Judgement, which is carried out, according to ultrasonic wave upstream and downstream time-of-flight values realizes the warning function reversely installed.
11. of the invention be further characterized in that, the data processing transmission of the program storage in the ultrasonic wave gas meter ARM core of definition
Program uses destiny evidence for accumulative, with throughput data, instantaneous flow data, metering and billing data, ladder dosage progressive price number
According to, take the amount of money in advance, valve status data, battery capacity data, NB signal strength data, leak alarm state, surreptitiously gaseity,
The data such as reversed installation condition encrypt data by data safety encrypting and decrypting functional module, are packaged, are modulated by NB
Demodulator carries out wireless signal modulation according to NB agreement and data line wireless network transmissions to backstage is realized table by power amplifier antenna
Has data-transformation facility.
12. the encryption mechanism of the invention for being further characterized in that data safety encrypting and decrypting functional module is different from NB modem
Data eat dishes without rice or wine encryption safe mechanism, but encrypted by fuel gas communication agreement, this function is realized by data encryption algorithm,
It is stored in the ultrasonic wave gas meter ARM of definition.
13. the data receiver processing that the memory in the ultrasonic wave gas meter ARM core of the invention for being further characterized in that definition stores
NB modem is decrypted program from the data that the wireless signal that the received wireless network of antenna is sent demodulates, solution
Analysis is realized two-way data communication and is controlled the ultrasonic wave gas meter ARM of definition, completes every function of ultrasonic wave gas meter
Energy.
14. module is completed the initialization of NB modem by the ARM chip on NB-LOT chip after powering on, it is in NB modulatedemodulate
Adjust the ready state of device, and module power on after define ultrasonic wave gas meter ARM initialization program be first carried out, respectively include counting
According at the beginning of memory function module initialization, the module initialization of battery capacity detection function, gas meter, flow meter function of measuring module communication serial ports
Beginningization, the module initialization of IC card read functions, combustion gas use safety monitoring function module initialization, and fuel gas alarm connects at information
Manage functional module initialization, Liquid Crystal Module initialization；Initialization program executes system clock configurator after being finished, and passes through
It is fixed that port configuration, house dog needed for inside needs time clock feature, port initialization to complete each function are completed in system clock configuration
When device time set, external memory initialization and read parameter；
Single-chip microcontroller, which enters, later opens the wake-ups to be interrupted such as global interrupt low power consumpting state, and program enters the judgement of event array and follows
In ring, when interrupting, program, which is jumped out, is recycled into interruption determining program, and judging rear program can be according to the specific of interruption
Content is respectively to measurement data acquisition, data upload, undervoltage warning, surreptitiously device alarm, reversed installation alarm, leakage alarm, switch
The event flag position of the functions such as valve is modified, and interruption is jumped out after change according to flag bit and carries out relevant event action；
Single-chip microcontroller first determines whether interrupt type when being interrupted wake-up, passes through which specific port of judgement is drawn again if it is external interrupt
Hair interrupts, and the event flag position of correlation function is arranged, principal function can complete corresponding event function according to flag bit after jumping out interruption
Energy；
Mainly there are battery capacity detection function, gas meter, flow meter supersonic wave metering serial communication function by the function that external interrupt triggers
Energy, IC card read functions, combustion gas use safety monitoring function, surreptitiously gas warning function；
When timer interruption occurs for program, according to certain time interval can execute correlation function, compare interrupt the moment when
Between it is whether identical as the preset function time, if the same be arranged correlation function event flag position, jump out interruption after principal function
Corresponding Event Function can be completed according to flag bit；
When the time reaching preset uplink time, NB-IOT modem is powered on, and executes initialization program, ultrasonic wave combustion
Gas meter ARM core can then communications protocol by NB modem upload a data to cloud backstage；
If Programmable detection is under-voltage out, when stealing the abnormal phenomenon such as gas, gas leakage, program, which will do it, alarms and by NB-IOT modulatedemodulate
Mode transfer block uploads a data and reminds user；
System will do it the diagnosis of primary system internal state at regular intervals in timer interruption simultaneously, judge each function
Whether unit normally starts, and whether each expansion mouth is applied；
If there is exception occur in certain functional units, ultrasonic wave gas meter ARM core then communications protocol can pass through NB modulation /demodulation
Device uploads a data and notifies related personnel to repair operation to cloud backstage；
Module enters dormant state and opening timing device if each functional unit normally starts, when module listens to the base station NB hair
Module can be waken up when the wakeup time of the message or program setting sent reaches, after mould group is waken up, each job note
Member is started to work, and transfers data to the ultrasound of definition after wherein NB-IOT demodulation module demodulates signal by Serial Port Line
Wave gas meter, flow meter ARM carries out valve control, and the ultrasonic wave gas meter ARM of definition extracts calculative data and is transferred to NB modulatedemodulate
Data are sent to NB modem by data line by the data-interface for adjusting device, and NB modem passes through the signal of output
The equipment such as wave filter duplexer switch antenna are sent to host computer and are parsed.
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| CN201711119800.5A CN109798947A (en) | 2017-11-14 | 2017-11-14 | A kind of narrowband NB-IOT communication module group and its application method for ultrasonic wave gas meter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110324732A (en) * | 2019-07-02 | 2019-10-11 | 天津市裕民燃气表具有限公司 | A kind of interactive system of NB-loT and intelligent gas meter |
| CN111090245A (en) * | 2019-12-31 | 2020-05-01 | 上海移远通信技术股份有限公司 | Intelligent gas monitoring system |
| CN111768603A (en) * | 2020-05-30 | 2020-10-13 | 深圳市有方科技股份有限公司 | Gas meter reading method and terminal |
| CN114125580A (en) * | 2021-09-22 | 2022-03-01 | 北京市燃气集团有限责任公司 | Control method for communication of intelligent gas meter |
-
2017
- 2017-11-14 CN CN201711119800.5A patent/CN109798947A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110324732A (en) * | 2019-07-02 | 2019-10-11 | 天津市裕民燃气表具有限公司 | A kind of interactive system of NB-loT and intelligent gas meter |
| CN111090245A (en) * | 2019-12-31 | 2020-05-01 | 上海移远通信技术股份有限公司 | Intelligent gas monitoring system |
| CN111768603A (en) * | 2020-05-30 | 2020-10-13 | 深圳市有方科技股份有限公司 | Gas meter reading method and terminal |
| CN114125580A (en) * | 2021-09-22 | 2022-03-01 | 北京市燃气集团有限责任公司 | Control method for communication of intelligent gas meter |
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