CN208673514U - A kind of NB-IOT water meter - Google Patents
A kind of NB-IOT water meter Download PDFInfo
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- CN208673514U CN208673514U CN201821450871.3U CN201821450871U CN208673514U CN 208673514 U CN208673514 U CN 208673514U CN 201821450871 U CN201821450871 U CN 201821450871U CN 208673514 U CN208673514 U CN 208673514U
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Abstract
The utility model embodiment provides a kind of NB-IOT water meter.The water meter includes: main control unit and power supply unit；Main control unit includes microcontroller and measurement sensory module, close range wireless communication NFC module, based on cellular narrowband Internet of Things NB-IOT module；Measurement sensory module is for acquiring data of water meter and data of water meter being sent to MCU；NB-IOT module is used to receive the data to be transmitted of MCU transmission and data to be transmitted is carried out teletransmission；NFC module is used to send interrupt signal with external NFC terminal communication and to MCU to wake up the water meter.The utility model embodiment passes through the NFC module with interrupt output function, interrupt signal is being sent thus to wake up water meter to MCU with after external NFC terminal communication, it need not be with the key waken up, improve the waterproof performance of water meter, and by interrupt signal instead of key circuit, so that false triggering probability is lower.
Description
Technical field
The utility model relates to water meter technical fields, in particular to a kind of NB-IOT water meter.
Background technique
In radio remote transmitting water meter field, often by water meter the powering mode of built-in lithium battery provide power supply for it.With
For 3.6V lithium battery power supply, the power consumption of the online transmission data of a NB-IOT terminal is 1~2mAh, and power consumption is larger.
Therefore, one fixed background server is set in order to reduce unnecessary power consumption, when water meter dispatches from the factory in factory
Location, In-Plant Test pass through after by the mode setting of water meter be factory's internal schema, so that water meter NB mode be forced to be in off working state.
And activate the NB mode of water meter by other communication modes again after factory, made with ensuring to dispatch from the factory to open an account to user installation in factory
This period will not largely consume water meter electricity, so that the battery in water meter reaches 6 years or more.
Active mode more commonly used at present is that external magnet activates or infrared communication sends order debugging activation.Using magnetic
The mode of activation, user can be delivered in use, using magnet by the way of water meter activation NB communication by finishing in water pump composite.
But since the mode of magnet activation is not especially strong, the maloperation being easy to produce during production and transport to control property.Using
The mode of infrared communication is needed to be provided with transparent window on water meter product and is communicated for infrared communication, for product
Waterproof performance design is also a kind of challenge.
Utility model content
In view of this, the utility model embodiment is designed to provide a kind of NB-IOT water meter, to solve above-mentioned technology
Problem.
In a first aspect, the utility model embodiment provides main control unit and the confession that a kind of NB-IOT water meter includes: connection
Electric unit；Said supply unit provides electric energy for the main control unit；
The main control unit includes: microcontroller and the measurement sensory module, the low coverage that connect respectively with the MCU
From wireless telecommunications NFC module, it is based on cellular narrowband Internet of Things NB-IOT module；
The data of water meter is sent to the MCU for acquiring data of water meter by the measurement sensory module；
The NB-IOT module is used to receive the data to be transmitted that the MCU is sent, and the data to be transmitted is carried out
Teletransmission；
The NFC module is used to communicate with external NFC terminal, and sends interrupt signal to the MCU, described in waking up
NB-IOT water meter.
Further, the NFC module includes NFC label transmission and memory module and NFC antenna；
The NFC antenna is used to incude the radiofrequency signal of the NFC terminal, and transmits and store mould for the NFC label
Block provides power supply；
The NFC label transmission and memory module are communicated by RF channel with the NFC terminal, and logical by I2C or SPI
Road is communicated with the MCU.
Further, the NFC module is also used to receive and store the data of water meter that the MCU is sent, and stores scene ginseng
Several and control command.
Further, the NFC antenna is 4.7uH inductance.
Further, the NB-IOT module includes: NB-IOT wireless communication module and patch type SIM card, the patch
Formula SIM card is welded on master control PCB, is connect with the MCU.
Further, said supply unit includes lithium thionyl chloride cell and lithium-ion capacitor；
If electric current needed for the main control unit is less than preset threshold, electricity is provided by the lithium thionyl chloride cell
Energy；
If electric current needed for the main control unit is more than or equal to the preset threshold, mentioned by the lithium-ion capacitor
For electric energy.
Further, said supply unit further include: battery capacity detection module, the battery capacity detection module are used for
When detecting the electricity of the lithium thionyl chloride cell lower than alarming value, then warning note is issued.
Further, the measurement sensory module passes through the sampling of stem-winder tongue tube, the sampling of Hall magnetic or ultrasonic wave sampling
Mode acquire the data of water meter.
Further, the water meter further includes the valve drive control module connecting with the MCU, the valve driving control
Molding block receives the control instruction that the MCU is sent and carries out state control to valve.
Further, the NFC module is to support the NFC TAG chip of ISO15693 standard agreement.
The utility model embodiment is communicated by the NFC module with interrupt output function with external NFC terminal
Afterwards, interrupt signal is sent to MCU, to, without with the key for being used to wake up, improve NB-IOT water meter to wake up water meter
Waterproof performance keeps false triggering probability lower in addition, replacing key circuit by interrupt signal.
Other feature and advantage of the utility model will illustrate in subsequent specification, also, partly from specification
It becomes apparent, or by implementing the utility model embodiment understanding.The purpose of this utility model and other advantages can lead to
Structure specifically indicated in the written description, claims, and drawings is crossed to be achieved and obtained.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is a kind of NB-IOT water meter schematic diagram of internal structure provided by the embodiment of the utility model；
Fig. 2 is another kind NB-IOT water meter schematic diagram of internal structure provided by the embodiment of the utility model；
Fig. 3 is NFC TAG chip circuit schematic diagram provided by the embodiment of the utility model；
Fig. 4 is that the area BUFFER provided by the embodiment of the utility model and EEPROM distinguish area's schematic diagram；
Fig. 5 is NFC order data transmission flow schematic diagram provided by the embodiment of the utility model；
Fig. 6 is a kind of processing method flow diagram based on NB-IOT water meter provided by the embodiment of the utility model.
It illustrates:
10- main control unit；20- power supply unit；101- microcontroller；102- measurement sensory module；103-NFC module；
104-NB-IOT module；105- valve drive control module；The transmission of 1031-NFC label and memory module；1032-NFC antenna；
1041-NB-IOT wireless communication module；1042- patch type SIM card；201- lithium thionyl chloride cell；202- lithium-ion capacitor；
203- battery capacity detection module.
Specific embodiment
Below in conjunction with attached drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear
Chu is fully described by, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole realities
Apply example.The component of the utility model embodiment being usually described and illustrated herein in the accompanying drawings can be come with a variety of different configurations
Arrangement and design.Therefore, the detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit below
The range of claimed invention, but it is merely representative of the selected embodiment of the utility model.Based on the utility model
Embodiment, those skilled in the art's every other embodiment obtained without making creative work, all
Belong to the range of the utility model protection.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.Meanwhile it is practical new at this
In the description of type, term " first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relatively important
Property.
Fig. 1 is a kind of NB-IOT water meter schematic diagram of internal structure provided by the embodiment of the utility model, as shown in Figure 1, should
Water meter includes: main control unit 10 and power supply unit 20；Said supply unit 20 is that the main control unit 10 provides electric energy；It should say
Bright, power supply unit 20 can be connect with main control unit 10 by electric wire.
The main control unit 10 includes: microcontroller 101 and the measurement sensory that connect respectively with the MCU 101
Module 102, is based on cellular narrowband Internet of Things NB-IOT module 104 at close range wireless communication NFC module 103；Wherein, MCU
101 can be 51 single-chip microcontrollers, be also possible to other microcontrollers.
The data of water meter is sent to the MCU for acquiring data of water meter by the measurement sensory module 102
101；It should be noted that measurement sensory module 102 is connect with the I/O of MCU 101 mouth, the data of water meter of acquisition is sent to
MCU 101, and measurement sensory module 102 can require using the sampling of stem-winder tongue tube according to water meter measurement, the sampling of Hall magnetic, surpass
The method of samplings such as wave sample.
The NB-IOT module 104 is used to receive the data to be transmitted that the MCU 101 is sent, and by the number to be transmitted
According to progress teletransmission；It should be noted that data to be transmitted can be data of water meter, NB-IOT module 104 can be by data of water meter
It is sent to Cloud Server.
The NFC module 103 is used to communicate with external NFC terminal, and sends interrupt signal to the MCU 101, with
Wake up the NB-IOT water meter.It should be noted that NFC technique is a kind of near field communication technology, it is carried out by near field antenna
The transmission of data and energy.NFC module 103 with the terminal for having NFC near field communication function by being communicated.When there is NFC whole
When holding close to NFC module 103, NFC module 103 sends interrupt signal to MCU 101, to wake up NB-IOT water meter.
It should be noted that NB-IOT water meter enters suspend mode operating mode after detecting qualification in factory, no longer opening NB-
IOT modular power source, after in-site installation success, by sending instructions under the channel NFC, activation NB-IOT enters normal mode of operation
Afterwards, NB-IOT power supply is opened according to the scene setting set time, data communication is carried out by NB-IOT module with background system.Its
In, the activation of NB-IOT water meter uses NFC channel control command mode.When NB-IOT background server address, initial timing communication
Between the scene setting parameter of the related NB-IOT communication such as section can be configured by the channel NFC scene.
The utility model embodiment is communicated by the NFC module with interrupt output function with external NFC terminal
Afterwards, interrupt signal is sent to MCU, to, without with the key for waking up NB-IOT water meter, improve the anti-of water meter to wake up water meter
Aqueous energy keeps false triggering probability lower in addition, replacing key circuit by interrupt signal.
On the basis of the above embodiments, Fig. 2 is that another NB-IOT water meter structure provided by the embodiment of the utility model shows
It is intended to, as shown in Fig. 2, the NFC module 103 includes NFC label transmission and memory module 1031 and NFC antenna 1032；
The NFC antenna 1032 is used to incude the radiofrequency signal of the NFC terminal, and transmits and deposit for the NFC label
It stores up module 1031 and power supply is provided；
NFC label transmission and memory module 1031 are communicated by RF channel with the NFC terminal, and pass through I2C or
The channel SPI is communicated with the MCU101.
In the specific implementation process, NFC module 103 can be NFC TAG chip, and Fig. 3 is the utility model embodiment
The NFC TAG chip circuit schematic diagram of offer, as described in Figure 3, NFC module 103 include NFC label transmission and memory module 1031
With NFC antenna 1032.Wherein, NFC antenna 1032 can be the inductance of 4.7uH, the I/O mouth company of NFC_POWER pin and MCU
It connects, the interruption foot connection of NFC_INT and single-chip microcontroller, NFC_SCL and NFC_SDA are connect with microcontroller bus.NFC TAG chip
It is powered when passing through NFC channel communications by NFC antenna, water meter power consumption when reducing communication.
As shown in figure 3, NFC TAG chip has the half-duplex of RF communication disruption signal output function and quick transmission mode
BUFFER function.NFC TAG circuit power does not provide power supply usually using the I/O confession electricity of MCU.When outside has NFC function
Terminal and when NFC TAG chip communication, give NFC chip to power by NFC antenna (i.e. rL1 inductance).The interruption of NFC chip is defeated
Foot NFC_INT, which is configured to detect, out exports interrupt signal when the RF channel of NFC electromagnetic field or NFC TAG write data, notify MCU
The data in NFC TAG are read by the channel I2C or SPI, at this moment MCU just provides power to NFC chip, and NB-IOT is effectively reduced
Water meter Overall Power Consumption.Further, the interrupt signal of NFC chip replaces key circuit, so that false triggering probability is lower and whole
Machine power consumption is also lower.
In addition, NFC module is also used to receive and store the data of water meter of MCU transmission, and existing parameter is stored in NFC
And control command.NFC TAG chip interior has the area BUFFER and the area EEPROM two major parts.Wherein the area BUFFER data have quick
The characteristics of read-write, power down does not save.And the characteristics of there are EEPROM data to read to write slowly fastly, and power failure data is not lost.According to NFC core
Piece internal structure feature, can by NFC TAG chip the area BUFFER and the area EEPROM carry out multidomain treat-ment, Fig. 4 be this reality
The area BUFFER provided with new embodiment and EEPROM distinguish area schematic diagram, as shown in figure 4, can rapid data transmission
The area BUFFER is also used to store the order data in the channel RF and I2C.Work is generally passed through by NFC mobile phone in semiduplex mode
RF channel initiates order, and after MCU reads data by the channel I2C, commands in return is written to the area BUFFER same position, uses
Express command transmits between water meter and NFC mobile phone.This order does not need NFC chip preservation.
The utility model embodiment uses the NFC TAG chip transmission of data with quick transmission mode, and data transmission is logical
The half-duplex BUFFER transmission for crossing quick transmission mode improves communication speed and communication reliability, and NFC TAG chip subregion
Processing efficiently uses NFC internal resource, and ensures that NB communications parameter data is not easy to lose.
In addition in one piece of RF parameter setting area of the EEPROM region division of NFC TAG chip, being set as can only be by NFC hand
Data are written in the RF interface of machine, and the MCU of NB-IOT water meter can only read setting parameter by I2C interface.This partial parameters ensures
The key communications parameter of NFC mobile phone setting will not be lost because the program of water meter malfunctions.
Meanwhile going out individual one piece of data of water meter memory block in the EEPROM region division of NFC chip, it is set as to lead to
The I2C interface write-in data of water meter are crossed, and NFC mobile phone can only read data by RF channel.By being drawn to the region EEPROM
Dividing has following two advantage: 1, by the other parameters and configuration data of partitioned storage metering and water meter, improving NFC TAG core
The utilization rate in the space EEPROM of piece.2, in water meter battery failure, motherboard circuit failure, as long as NFC TAG chip does not damage
And the periphery NFC inductance is normal, the pass that can be run water meter by RF channel in the case where not opening water meter by NFC mobile phone
Key continuous data, alert data and alarm logging are read out, to improve reliability of the water meter in data transmission.
On the basis of the above embodiments, the NB-IOT module 104 includes: NB-IOT wireless communication module 1041 and patch
Chip SIM card 1042, the patch type SIM card 1042 are welded on master control pcb board, and are connect with the MCU 101.It will patch
Chip SIM card 1042 and MCU 101 weld the reliability that can be improved product.NB-IOT module 104 works in PSM Working mould
Formula periodically connects with cellular network base stations once communicated under normal circumstances.NB- can also be activated by NFC near field communication channel
IOT communication.
The utility model embodiment carries out data communication using NB-IOT technology, belongs to a kind of radio remote transmitting water meter product,
Water meter operation data periodically can be reported into system background, be handled for network analysis.
Further, the NFC TAG chip that product uses is the chip of support ISO15693 standard agreement.ISO15693 is
For an international standard of applying in radio frequency identification, the standards define work intelligent label and readers at 13.56 mhz
Air interface and data communication specification.The label for meeting this standard farthest distinguishes distance and reaches 2 meters.For NB-IOT water meter product
Application, as long as the communication distance in the near field RF can reach can communicate close to watermeter shell so that using patch electricity
Sense is possibly realized to design NFC antenna.
The all built-in matching capacitance of 28.5pF of general double interface NFC TAG chips, according to ISO15693 standard agreement,
The working frequency of radio channel is at 13.56 mhz.According to the relationship of frequency and inductance capacitance, available following formula:
Show that antennainductance calculation formula is as follows:
According to fresonance=13.56MHz, Ctuning_ic=28.5pF, can calculate matching inductance sensibility reciprocal is 4.92uH.
Coil inductance can be substituted as NFC antenna without the 4.7uH inductance of shielded layer using patch.Wherein NFC communication
Distance and the diameter of inductance be substantially proportional to.Use diameter for 7.8mm, inductance is that the unmasked inductance of 4.7uH can reach
It is greater than the requirement of 6mm to NFC communication distance.
On the basis of the above embodiments, said supply unit 20 includes lithium thionyl chloride cell 201 and lithium-ion capacitance
Device 202；
If electric current needed for the main control unit 10 is less than preset threshold, mentioned by the lithium thionyl chloride cell 201
For electric energy；
If electric current needed for the main control unit 10 is more than or equal to the preset threshold, pass through the lithium-ion capacitor
202 provide electric energy.
In the specific implementation process, since 201 peak point current power supply capacity of the lithium thionyl chloride cell of energy type is weaker,
And NB-IOT module 104 needs biggish peak point current in data transmission procedure.If straight using lithium thionyl chloride cell 201
The mode of power supply is connect, once there is battery passivation phenomenon, lithium thionyl chloride cell internal resistance will be dramatically increased, when needing high current to supply
When electric, lithium thionyl chloride cell output voltage is lower.Therefore the power supply unit 20 of NB-IOT water meter is configured with a large capacity
Lithium-ion capacitor 202, when needing high current to power, supply current is provided from lithium-ion capacitor 202, can effectively be mentioned
High 201 utilization rate of lithium thionyl chloride cell.Usually, the capacity of this lithium-ion capacitor 202 is between 20F~40F.
On the basis of the above embodiments, said supply unit 20 further include: battery capacity detection module 203, the electricity
Pond electric power detection module 203 is used to then issue report when detecting the electricity of the lithium thionyl chloride cell 201 lower than alarming value
Alert prompt informs that user charges or replace in time battery to play a warning role.
On the basis of the above embodiments, the NB-IOT water meter further includes the valve driving connecting with the MCU 101
Control module 105, the valve drive control module 105 receive the control instruction that the MCU 101 is sent and carry out to valve
State control.
In the specific implementation process, what is connect with MCU 101 can also have valve drive control module 105, pass through valve
The control of long-range and live switch valve may be implemented in door drive control module 105.
Fig. 5 is NFC order data transmission flow schematic diagram provided by the embodiment of the utility model, as shown in figure 5, specifically
Are as follows:
Step 501: receiving NFC interrupt signal；It is close by NFC when external data needs to be transferred to NB-IOT water meter
The RF channel of field communication transfers data in the BUFFER of quick transmission mode of NFC TAG, and control is interrupted in NFC TAG output
Signal is to MCU, at this point, MCU receives NFC interrupt signal；
Step 502: reading NFC chip BUFFER data；After MCU receives NFC interrupt signal, number is read from BUFFER
According to；
Step 503: whether being a complete order frame；MCU judges whether to receive a complete command frame, if not
It is to then follow the steps 504, it is no to then follow the steps 505；
Step 504: whether receiving data time-out；Whether the terminal signaling that MCU judgement receives is overtime, ties if time-out
Beam NFC process flow, it is no to then follow the steps 502；
Step 505: command process process；MCU handles the data in BUFFER, orders passback after having handled
It is written in BUFFER, after outside reads the order returned in BUFFER by radio channel, whether confirmation order is executed into
Function.
The utility model embodiment is run water meter by RF channel in the case where not opening water meter by NFC mobile phone
Crucial continuous data, alert data and alarm logging are read out, using the NFC TAG chip for having interrupt output function, NB-
Key need not be had on IOT water meter, after the completion of RF channel communication, NFC TAG chip exports interrupt signal notice MCU and controls NB-
IOT module initiates telecommunication.
The order reported immediately that NB-IOT water meter can also be sent by receiving mobile phone by the channel NFC, starting one
Secondary and background system connecting communication.Push button exciting or the primary communication of magnet activation of original scheme are replaced with the mode of NFC order
Mode, it is more convenient, it is also relatively reliable.
The mode of communication can actively initiate the mode reported using NB-IOT water meter, when NB-IOT water meter will need to upload
Data active reporting complete after, then keep the channel NB connection a period of time, copy it to receive the benefit that background server issues
His data or control command.It is common, to reduce NB-IOT water meter product Overall Power Consumption, it is contemplated that NB network delay has reported
It is set as between 20 seconds to 1 minute at the rear waiting time.
Fig. 6 is a kind of processing method flow diagram based on NB-IOT water meter provided by the embodiment of the utility model, such as
Shown in Fig. 6, this method comprises:
Step 601: the water meter information of NB-IOT water meter to be processed is sent to terminal, the water meter information includes location information
It is numbered with water meter.
In the specific implementation process, due to the complexity of NB-IOT water meter network performance, it is possible to certain NB- occur
The case where IOT water meter can not be uploaded onto the server NB-IOT water meter real-time running data by the channel NB-IOT.Due to having
The characteristics of NB-IOT and NFC binary channels communicates can be by the channel NFC by NB-IOT water when teletransmission communication channel operation irregularity
The recent operation data of table is read out.It, can be with when remote server needs to obtain the data of water meter of NB-IOT water meter to be processed
The water meter information of NB-IOT water meter to be processed is sent to terminal, wherein include location information in water meter information, location information is used for
The corresponding user of NFC terminal the location of NB-IOT water meter to be processed is informed, to learn user and the NB- to be processed
The distance of IOT water meter, it should be noted that can also have water meter number in water meter information, some cells may will be in a building
The water meter of all residents is put together, therefore, so that user is found the NB-IOT water to be processed by water meter number
Table.It should be noted that the terminal can be the terminal with NFC function, it is also possible to the terminal without NFC function, but
It is that obtain the terminal of NB-IOT water meter to be processed must have the terminal of NFC function.
Step 602: receiving the data of water meter that the terminal is sent, and corresponding processing is carried out according to the data of water meter；
The data of water meter includes any one of water meter number, water meter number of words and operating status or combinations thereof；Wherein, the water meter number
According to being obtained from the NB-IOT water meter to be processed according to the positional information by NFC device.
In the specific implementation process, after user sees the message of server publication at the terminal, it can be received and be appointed with competition for orders
Business, finds NB-IOT water meter to be processed according to location information, then by the terminal with NFC function close to NB-IOT to be processed
Water meter realizes the communication of terminal and NB-IOT water meter to be processed, so that terminal gets the water meter number of NB-IOT water meter to be processed
According to, and data of water meter is sent to server, after server receives data of water meter, NB-IOT water meter to be processed is corresponded to
Processing, judge whether to need to send special messenger scene to safeguard water meter.It should be noted that data of water meter may include user
Account information, any one in water meter number of words and operating status or combinations thereof.
It is obtained it is understood that user completes data of water meter, and successfully after upload data, the system of appointing national minority hereditary headmen in the Yuan, Ming and Qing Dynasties passes through public platform and sends out
Put reward.This mode can efficiently use the personnel such as residential property, resident, complete the technology dimension of field failure water meter
Shield and meter reading work, effectively reduce the quantity of system of appointing national minority hereditary headmen in the Yuan, Ming and Qing Dynasties maintenance personnel, reduce system of appointing national minority hereditary headmen in the Yuan, Ming and Qing Dynasties's maintenance cost.
The information sharing and maintenance that NB-IOT water meter may be implemented by the NB-IOT water meter that the various embodiments described above provide, by
In the complexity for the water meter network performance for having NB-IOT module, it is possible to which certain water meters occur can not be incited somebody to action by the channel NB-IOT
The case where NB-IOT water meter real-time running data is uploaded onto the server.It, can be logical by NFC when teletransmission communication channel operation irregularity
Road reads out the recent operation data of NB-IOT water meter.
In several embodiments provided herein, it should be understood that disclosed device and method can also pass through
Other modes are realized.The apparatus embodiments described above are merely exemplary, for example, flow chart and block diagram in attached drawing
Show the device of multiple embodiments according to the present utility model, the system frame in the cards of method and computer program product
Structure, function and operation.In this regard, each box in flowchart or block diagram can represent a module, section or code
A part, a part of the module, section or code includes one or more for implementing the specified logical function
Executable instruction.It should also be noted that function marked in the box can also be with not in some implementations as replacement
It is same as the sequence marked in attached drawing generation.For example, two continuous boxes can actually be basically executed in parallel, they have
When can also execute in the opposite order, this depends on the function involved.It is also noted that in block diagram and or flow chart
Each box and the box in block diagram and or flow chart combination, can function or movement as defined in executing it is dedicated
Hardware based system realize, or can realize using a combination of dedicated hardware and computer instructions.
In addition, each functional module in each embodiment of the utility model can integrate together formed one it is independent
Part is also possible to modules individualism, and an independent part can also be integrated to form with two or more modules.
It, can be with if the function is realized and when sold or used as an independent product in the form of software function module
It is stored in a computer readable storage medium.Based on this understanding, the technical solution of the utility model substantially or
Person says that the part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products,
The computer software product is stored in a storage medium, including some instructions are used so that computer equipment (can be with
Personal computer, server or the network equipment etc.) execute each embodiment the method for the utility model whole or portion
Step by step.And storage medium above-mentioned include: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), with
Machine accesses various Jie that can store program code such as memory (RAM, Random Access Memory), magnetic or disk
Matter.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.It should be noted that
To: similar label and letter indicate similar terms in following attached drawing, therefore, once determined in a certain Xiang Yi attached drawing
Justice does not need then that it is further defined and explained in subsequent attached drawing.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replacement, it should be covered within the scope of the utility model.Therefore, the protection scope of the utility model is answered described with power
Subject to the protection scope that benefit requires.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
Claims (10)
1. a kind of NB-IOT water meter characterized by comprising the main control unit and power supply unit of connection；Said supply unit is
The main control unit provides electric energy；
The main control unit include: microcontroller and the measurement sensory module being connect respectively with the MCU, closely without
Line communicates NFC module, is based on cellular narrowband Internet of Things NB-IOT module；
The data of water meter is sent to the MCU for acquiring data of water meter by the measurement sensory module；
The NB-IOT module is used to receive the data to be transmitted that the MCU is sent, and the data to be transmitted is carried out teletransmission；
The NFC module is used to communicate with external NFC terminal, and sends interrupt signal to the MCU, to wake up the NB-
IOT water meter.
2. NB-IOT water meter according to claim 1, which is characterized in that the NFC module includes NFC label transmission and deposits
Store up module and NFC antenna；
The NFC antenna is used to incude the radiofrequency signal of the NFC terminal, and mentions for NFC label transmission and memory module
Power supply source；
NFC label transmission and memory module communicates by RF channel with the NFC terminal, and pass through the channel I2C or SPI and
The MCU communication.
3. NB-IOT water meter according to claim 1, which is characterized in that the NFC module is also used to receive and store institute
The data of water meter of MCU transmission is stated, on-site parameters and control command are stored.
4. NB-IOT water meter according to claim 2, which is characterized in that the NFC antenna is 4.7uH inductance.
5. NB-IOT water meter according to claim 1, which is characterized in that the NB-IOT module includes: NB-IOT wireless
Communication module and patch type SIM card, the patch type SIM card are welded on master control PCB, connect with the MCU.
6. NB-IOT water meter according to claim 1, which is characterized in that said supply unit includes lithium thionyl chloride cell
And lithium-ion capacitor；
If electric current needed for the main control unit is less than preset threshold, electric energy is provided by the lithium thionyl chloride cell；
If electric current needed for the main control unit is more than or equal to the preset threshold, electricity is provided by the lithium-ion capacitor
Energy.
7. NB-IOT water meter according to claim 6, which is characterized in that said supply unit further include: battery capacity inspection
Module is surveyed, the battery capacity detection module is used for when detecting the electricity of the lithium thionyl chloride cell lower than alarming value,
Then issue warning note.
8. NB-IOT water meter according to claim 1, which is characterized in that the measurement sensory module passes through mechanical surface drying spring
The mode of pipe sampling, the sampling of Hall magnetic or ultrasonic wave sampling acquires the data of water meter.
9. NB-IOT water meter according to claim 1, which is characterized in that the water meter further includes connecting with the MCU
Valve drive control module, the valve drive control module receive the control instruction that the MCU is sent and carry out shape to valve
State control.
10. -9 described in any item water meters according to claim 1, which is characterized in that the NFC module is to support ISO15693 mark
The NFC TAG chip of quasi- agreement.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821450871.3U CN208673514U (en) | 2018-09-03 | 2018-09-03 | A kind of NB-IOT water meter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821450871.3U CN208673514U (en) | 2018-09-03 | 2018-09-03 | A kind of NB-IOT water meter |
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| CN208673514U true CN208673514U (en) | 2019-03-29 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108806227A (en) * | 2018-09-03 | 2018-11-13 | 武汉盛帆电子股份有限公司 | A kind of NB-IOT water meters and processing method |
| CN111385773A (en) * | 2020-03-24 | 2020-07-07 | 武汉科技大学 | Intelligence water gauge control circuit based on NB-IOT |
| CN111798653A (en) * | 2020-07-03 | 2020-10-20 | 山东省计算中心（国家超级计算济南中心） | Data acquisition method and device |
| CN114942611A (en) * | 2022-07-26 | 2022-08-26 | 北京市农林科学院智能装备技术研究中心 | Agricultural irrigation remote water meter and water meter control method |
-
2018
- 2018-09-03 CN CN201821450871.3U patent/CN208673514U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108806227A (en) * | 2018-09-03 | 2018-11-13 | 武汉盛帆电子股份有限公司 | A kind of NB-IOT water meters and processing method |
| CN111385773A (en) * | 2020-03-24 | 2020-07-07 | 武汉科技大学 | Intelligence water gauge control circuit based on NB-IOT |
| CN111798653A (en) * | 2020-07-03 | 2020-10-20 | 山东省计算中心（国家超级计算济南中心） | Data acquisition method and device |
| CN114942611A (en) * | 2022-07-26 | 2022-08-26 | 北京市农林科学院智能装备技术研究中心 | Agricultural irrigation remote water meter and water meter control method |
| CN114942611B (en) * | 2022-07-26 | 2022-10-04 | 北京市农林科学院智能装备技术研究中心 | Agricultural irrigation remote water meter and water meter control method |
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