CN206832324U - A kind of new wireless water level transmitter based on NB IoT - Google Patents

A kind of new wireless water level transmitter based on NB IoT Download PDF

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Publication number
CN206832324U
CN206832324U CN201720673865.3U CN201720673865U CN206832324U CN 206832324 U CN206832324 U CN 206832324U CN 201720673865 U CN201720673865 U CN 201720673865U CN 206832324 U CN206832324 U CN 206832324U
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China
Prior art keywords
module
water level
iot
level transmitter
transmitter based
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Expired - Fee Related
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CN201720673865.3U
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Chinese (zh)
Inventor
沈杜海
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Fujian Strong Min Mdt Infotech Ltd
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Fujian Strong Min Mdt Infotech Ltd
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Abstract

The utility model provides a kind of new wireless water level transmitter based on NB IoT, water level is measured using hydrostatic pressure, includes pressure measurement sensing element unit, CPU, battery module, temperature sensing unit, wireless telecommunications module, A/D modular converters, power management module.The utility model is powered using suitable batteries, without frequently changing battery;Do not use the various communication interfaces being connected with collector, thus without complexity installation and wiring, it is easy to use, simple, it is easy to maintenance;Without being equipped with the teletransmission equipment such as data concentrator or gateway again;Wireless communication distance is up to several kilometers, the direct long-distance Log server of Monitoring Data to platform;Relative to prior art overall plan, cost is less expensive, and it is convenient to realize, practicality is stronger.

Description

A kind of new wireless water level transmitter based on NB-IoT
Technical field
Water level and the technical field such as pressure-detecting device and arrowband Internet of Things are the utility model is related to, it is particularly a kind of new The wireless water level transmitter based on NB-IoT.
Background technology
In fields such as sewage disposal, environmental protection tests, water supply and sewage, pharmacy, aquacultures, often use water level or liquid level becomes Device is sent, this kind of detection method is usually that traditional sensor or transmitter are typically adopted using hydrostatic principle measurement liquid level With wired connection, the method external connection by the result of measurement by electric signal or wired serial communication.
Common level sensor is by sensor output 4~20mA/0~10mA current standard signal, or 1 ~5V/0~5V voltage standard signal, rear end reconnect collector and carry out standard signal acquisition process, pressure corresponding to acquisition Or water level parameters, it is such a most commonly seen in industrial circle by the DA way of outputs, fed back pair also by rate-adaptive pacemaker sometimes The pressure value answered.
Ventional water level sensor also has is transmitted sensing by wire communication modes such as RS485/RS232 or SDI-12 The pressure parameter of device collection, generally require configuration collector and form a water level transmitter entirety, or directly pass through wired company It is connected in system.
Above by DA outputting standards signal or the level sensor or transmitter by wired serial port, all Connected and the problem of need collecting unit to be used cooperatively in the presence of wire is needed;Also it is defective in power supply supply and power consumption, generally External stabilized power source and change-over circuit or communication isolation circuit are needed, for example is to use SDI-12 communication modes, it is desirable to provide Stable 12VDC.
Existing water level transmitter also has by way of short-distance networking is wirelessly transferred, or is led to using RF radio frequencies News mode, such general communication distance of wireless water level transmitter is relatively near to communicate routing node or via node, it is necessary to additionally arrange, Sometimes also need to coordinate data concentrator or Communication Gateway to use, the effective communication distance and system of such water level transmitter Overall cost is an apparent technological deficiency or technical scheme defect.And on a small quantity using the water level pick-up of GPRS communications Device, due to power problemses, generally require external power supply power supply, and it is unstable due to GPRS communications, sometimes because connection It is disconnected and causes real-time Monitoring Data to lose or postpone to be sent to, because inferior position is obvious, this mode is in water level transmitter Upper application is also more rare.
Utility model content
The utility model makes improvement for above-mentioned technical problem, i.e. technical problem to be solved in the utility model is to carry It can be powered for a long time using battery, without optional equipment collector and being capable of the low work(based on NB-IoT telecommunication for a kind of The wireless water level transmitter of consumption.
In order to solve the above-mentioned technical problem, a kind of technical scheme of the present utility model is:It is a kind of new based on NB-IoT Wireless water level transmitter, using hydrostatic pressure measure water level, include pressure measurement sensing element unit, CPU, Battery module, temperature sensing unit, and wireless telecommunications module, A/D modular converters, the electricity being connected with the CPU Source control module.
Further, the pressure measurement sensing element unit electrically connects with filter rectification module, for water body static pressure to be changed For electric signal.
Further, the filter rectification module electrically connects with differential amplifier circuit, after signal enhanced processing with institute State the electrical connection of A/D modular converters.
Further, the battery module is connected with the power management module, respectively described wireless telecommunications module, in Central Processing Unit, A/D modular converters, differential amplifier circuit, filter rectification module for power supply.
Further, the wireless telecommunications module is a kind of protenchyma combined network communication module of low-power consumption, the protenchyma Combined network communication module also includes NB-IOT modules, and eSIM cards, and the wireless telecommunications module is used to communicate with remote platform Connect simultaneously transmission measurement data.
Further, the wireless telecommunications module can be the NB-IOT modules of single mode, can also be and include NB-IOT The multimode communication module group of technology mode.
Further, the pressure measurement sensing element unit is a kind of isolated form diffusion silicon-sensitive element, and it is stainless to include one The membrane for pressure measurement of steel material.
Further, the membrane for pressure measurement of the isolated form diffusion silicon-sensitive element can produce micro- when by static pressure Displacement, so as to cause the resistance built in the pressure measurement sensing element unit to change, changed with reference to back-end circuit processing, by this One change corresponding conversion, by further filter rectification, enhanced processing and AD conversion, enters into the change of millivolt voltage signal The CPU carries out algorithm computing, obtains water body pressure value and corresponding water level parameters.
Further, the temperature sensing unit is built in the pressure measurement sensing element unit, for measuring medium temperature Degree, carry out the temperature-compensating of institute's measuring pressure.
Further, the temperature sensing unit is a kind of monobus type digital temperature sensor, model DS18B20, The CPU directly reads temperature value and is used to calculate.
Further, the CPU is a kind of microprocessor of low-power consumption (Central Processing Unit, CPU).
Further, in the ARM of the preferably molded-in data storage element of the microprocessor of the low-power consumption and AD conversion unit The series microprocessor of the low-power consumption of core.
Compared with prior art, the utility model has the advantages that:
(1)NB-IoT arrowbands technology of Internet of things by using low-power consumption and the microprocessor using low-power consumption, using conjunction Suitable battery powered, can be used for a long time, without frequently changing battery, without external power supply;
(2)The various communication interfaces being connected with collector are not used, so without the installation and wiring of complexity, using just It is prompt, simple, it is easy to maintenance;
(3)Hardware cost spending is reduced, without being equipped with the teletransmission equipment such as data concentrator or gateway again;
(4)Base station based on common carrier, signal coverage rate is very wide, and wireless communication distance is up to several kilometers, monitoring The direct long-distance Log server of data is to platform;
(5)Relative to prior art overall plan, cost is less expensive, and it is convenient to realize, practicality is stronger.
Brief description of the drawings
Fig. 1 is the structured flowchart of the utility model embodiment.
In Fig. 1:1- wireless telecommunications module, 101-NB-IOT modules, 102-eSIM cards, 2- CPU, 3- power supplys Management module, 4- battery modules, 5-A/D modular converters, 6- differential amplifier circuits, 7- filter rectifications module, the sensitive member of 8- pressure measurement Part unit, 9- temperature sensing units.
Embodiment
The required accompanying drawing used in embodiment or description of the prior art will be briefly described below, show and Easy insight, described embodiment are part of the embodiment of the present utility model, and accompanying drawing is some embodiment party of the present utility model Formula, for those of ordinary skill in the art, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings Obtain the accompanying drawing of other forms.
It should be noted that unless otherwise clearly defined and limited, term " connection " in the utility model description, " connected ", " installation " should be interpreted broadly, for example, it may be being integrally connected, being fixedly connected or being detachably connected;Can be with It is to be directly connected to by mechanical structure or electronics or be indirectly connected by intermediary.
As shown in figure 1, a kind of new wireless water level transmitter based on NB-IoT, water is measured using hydrostatic pressure Position, includes pressure measurement sensing element unit 8, CPU 2, battery module 4, temperature sensing unit 9, and with it is described in Wireless telecommunications module 1, A/D modular converters 5, the power management module 3 of the connection of Central Processing Unit 2.
In the present embodiment, the pressure measurement sensing element unit 8 electrically connects with filter rectification module 7, for water body is quiet Pressure is converted to electric signal.
In the present embodiment, the filter rectification module 7 electrically connects with differential amplifier circuit 6, by signal enhanced processing Electrically connected afterwards with the A/D modular converters 5.
The battery module 4 is connected with the power management module 3, respectively described wireless telecommunications module 1, central processing Unit 2, A/D modular converters 5, differential amplifier circuit 6, filter rectification module 7 are powered.
In the present embodiment, the wireless telecommunications module 1 is a kind of protenchyma combined network communication module of low-power consumption, described narrow Band Internet of Things communication module group also includes NB-IOT modules 101, and eSIM cards 102, the wireless telecommunications module 1 for it is remote Cheng Pingtai communications connection and transmission measurement data.
In the present embodiment, the eSIM cards 102 are that a kind of be built in the wireless telecommunications module 1 possesses Internet of Things The number card of special number section, as optional embodiment, the eSIM cards 102 can also be using Internet of Things special number or The SIM card or the soft SIM card of use of regular handset number.
In the present embodiment, the pressure measurement sensing element unit 8 is a kind of isolated form diffusion silicon-sensitive element, includes one The membrane for pressure measurement of stainless steel.
In the present embodiment, the membrane for pressure measurement of the isolated form diffusion silicon-sensitive element can produce when by static pressure Raw micro-displacement, so as to cause the resistance built in the pressure measurement sensing element unit 8 to change, turn with reference to back-end circuit processing Change, the change by this change corresponding conversion into millivolt voltage signal, turn by further filter rectification, enhanced processing and AD Change, carry out algorithm computing into the CPU 2, obtain water body pressure value and corresponding water level parameters.
In the present embodiment, one kind can also be used as a kind of optional embodiment, the pressure measurement sensing element unit 8 Ceramic capacitive pressure sensitive sensor is replaced, and is more suitable for needing anticorrosive, wear-resistant measuring environment, the ceramic condenser pressure Power sensitive sensor includes underlayer electrode and ceramic diaphragm, during by static pressure, because ceramic diaphragm produces micro-displacement, substrate The capacitance of electrode and ceramic diaphragm will produce change, then be changed by signal condition, be further converted into voltage signal, as above It is the same described by stating, after AD processing and algorithm computing, pressure parameter corresponding to acquisition.
In the present embodiment, the temperature sensing unit 9 is built in the pressure measurement sensing element unit 8, for measuring Medium temperature, carry out the temperature-compensating of institute's measuring pressure.
In the present embodiment, the temperature sensing unit 9 is a kind of monobus type digital temperature sensor, model DS18B20, the CPU 2 directly read temperature value and are used to calculate.
In the present embodiment, NTC temperature-sensitives can also be used as a kind of optional embodiment, the temperature sensing unit 9 AD conversion unit built in resistance and the CPU 2 is realized, for substituting temperature sensor, according to resistance value with The change of temperature and change this principle and measure.
In the present embodiment, the CPU 2 is a kind of microprocessor (Central of low-power consumption Processing Unit, CPU).
In the present embodiment, the microprocessor of the low-power consumption is using onboard data storage element and AD conversion unit The series microprocessor of the low-power consumption of ARM kernels.
In the present embodiment, the utility model is by using the NB-IoT arrowbands technology of Internet of things of low-power consumption and using low work( The microprocessor of consumption, is powered using suitable batteries, can be used for a long time, without frequently changing battery, without external power supply;Not yet Have using the various communication interfaces being connected with collector, so without the installation and wiring of complexity, easy to use, simple, maintenance It is convenient;Hardware cost spending is reduced, without being equipped with the teletransmission equipment such as data concentrator or gateway again;Base based on common carrier Stand, signal coverage rate is very wide, and wireless communication distance is up to several kilometers, the direct long-distance Log server of Monitoring Data to platform;Relative to Prior art overall plan, cost is less expensive, and it is convenient to realize, practicality is stronger.
It should be strongly noted that as a kind of optional embodiment, the wireless telecommunications module 1 can also be included The communication module group of NB-IOT/eMTC/GSM single modes or multimode, it is not limited to single NB-IOT modules or other arrowband Internet of Things Net communication module group, so as to form other embodiment of the present utility model.
Preferred embodiment of the present utility model is the foregoing is only, anyone can obtain under enlightenment of the present utility model Go out other various forms of wireless water level transmitters based on NB-IoT, it is all done according to present utility model application the scope of the claims it is equal Deng change and modification, it should all belong to covering scope of the present utility model.

Claims (5)

1. a kind of new wireless water level transmitter based on NB-IoT, water level is measured using hydrostatic pressure, it is characterised in that Include pressure measurement sensing element unit(8), CPU(2), battery module(4), temperature sensing unit(9), Yi Jiyu The CPU(2)The wireless telecommunications module of connection(1), A/D modular converters(5), power management module(3);
The pressure measurement sensing element unit(8)With filter rectification module(7)Electrical connection, for water body static pressure to be converted into telecommunications Number;
The filter rectification module(7)With differential amplifier circuit(6)Electrical connection, turn after signal enhanced processing with the A/D Change the mold block(5)Electrical connection;
The battery module(4)With the power management module(3)Connection, respectively described wireless telecommunications module(1), centre Manage unit(2), A/D modular converters(5), differential amplifier circuit(6), filter rectification module(7)Power supply.
2. a kind of new wireless water level transmitter based on NB-IoT according to claim 1, it is characterised in that described Wireless telecommunications module(1)It is a kind of protenchyma combined network communication module of low-power consumption, the protenchyma combined network communication module also includes There are NB-IOT modules(101), and eSIM cards(102), the wireless telecommunications module(1)For being connected simultaneously with remote platform communication Transmission measurement data.
3. a kind of new wireless water level transmitter based on NB-IoT according to claim 1, it is characterised in that described Pressure measurement sensing element unit(8)It is a kind of isolated form diffusion silicon-sensitive element, includes the pressure measurement film of a stainless steel Piece.
4. a kind of new wireless water level transmitter based on NB-IoT according to claim 1, it is characterised in that described Temperature sensing unit(9)It is built in the pressure measurement sensing element unit(8)In, for measuring medium temperature, carry out institute's measuring pressure Temperature-compensating.
5. a kind of new wireless water level transmitter based on NB-IoT according to claim 1, it is characterised in that described CPU(2)It is a kind of microprocessor of low-power consumption (Central Processing Unit, CPU).
CN201720673865.3U 2017-06-12 2017-06-12 A kind of new wireless water level transmitter based on NB IoT Expired - Fee Related CN206832324U (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109272726A (en) * 2018-07-30 2019-01-25 中铁七局集团西安铁路工程有限公司 A kind of precipitation Well Water Level based on Internet of Things monitors transmitting device automatically
CN109448349A (en) * 2018-11-22 2019-03-08 广州南湾信息科技有限公司 A kind of hydrological telemetering equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109272726A (en) * 2018-07-30 2019-01-25 中铁七局集团西安铁路工程有限公司 A kind of precipitation Well Water Level based on Internet of Things monitors transmitting device automatically
CN109448349A (en) * 2018-11-22 2019-03-08 广州南湾信息科技有限公司 A kind of hydrological telemetering equipment

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Granted publication date: 20180102

Termination date: 20190612