CN207439496U - Liquid level wireless sensor based on NB-IoT - Google Patents
Liquid level wireless sensor based on NB-IoT Download PDFInfo
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- CN207439496U CN207439496U CN201721382641.3U CN201721382641U CN207439496U CN 207439496 U CN207439496 U CN 207439496U CN 201721382641 U CN201721382641 U CN 201721382641U CN 207439496 U CN207439496 U CN 207439496U
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Abstract
The utility model discloses a kind of liquid level wireless sensor based on NB IoT, including liquid level sensor body, Conditioning Circuits of Sensor, high precision analogue conversion circuit, low-power consumption MCU, ferroelectric memory, NB IoT modules, power circuit and display circuit；The output terminal connection Conditioning Circuits of Sensor of liquid level sensor body, the output terminal connection high precision analogue conversion circuit of Conditioning Circuits of Sensor, the output terminal of high precision analogue conversion circuit is connected to low-power consumption MCU, the output terminal connection NB IoT modules and display circuit of low-power consumption MCU；The input terminal of the low-power consumption MCU is also associated with ferroelectric memory.
Description
Technical field
The utility model is related to a kind of wireless remote liquid level sensors, and in particular to a kind of liquid level wireless based on NB-IoT
Sensor.
Background technology
Liquid level sensor is extensively using water conservancy, environmental protection, industrial stokehold, oil, chemical industry, medicine and other fields.At present, liquid
The acquisition of position signal uses electronic liquid level sensor more.Electronic liquid level sensor can be divided into analog and digital, general mould again
Plan formula liquid level sensor can not realize that wireless remote transmission is long-range.RS485 liquid level sensors are generally used in wireless remote transmission liquid level field
Add DTU modes or use GPRS/GSM liquid level sensors.
Using RS485 liquid level sensors DTU modes is added to need field wiring when realizing wireless remote liquid level data function, two
It is unreliable that a component is susceptible to connection.Using GPRS/GSM liquid level sensors power consumption greatly, it is necessary to frequently with changing battery or existing
Lay power supply in field.Both modes are all using GPRS/GSM networks, live GPRS/GSM networks are covered more demanding.Underground
The places such as room and inspection shaft can not usually use.
Utility model content
The technical problem to be solved by the utility model is to the deficiencies in for the above-mentioned prior art, disclose a kind of base
In the liquid level wireless sensor of NB-IoT, liquid level signal acquisition, liquid level data processing, the display of liquid level data scene, liquid are realized
Position data upload far-end server by NB-IoT networks.NB-IoT wireless remote transmission liquid level sensor power consumptions are very low, but use
It carries lithium battery to work long hours, solve the problems, such as scene power supply and frequently replaces battery.NB-IoT technologies solve simultaneously
The problem of places signal difference such as basement and inspection shaft.
Technical solution is used by the utility model solves its technical problem：Liquid level wireless sensing based on NB-IoT
Device, including liquid level sensor body, Conditioning Circuits of Sensor, high precision analogue conversion circuit, low-power consumption MCU, ferroelectric memory,
NB-IoT modules, power circuit and display circuit；
The output terminal connection Conditioning Circuits of Sensor of liquid level sensor body, the output terminal connection of Conditioning Circuits of Sensor are high
Precision analog to digital conversion circuit, the output terminal of high precision analogue conversion circuit are connected to low-power consumption MCU, the output terminal of low-power consumption MCU
Connect NB-IoT modules and display circuit；
The input terminal of the low-power consumption MCU is also associated with ferroelectric memory.
A kind of preferred embodiment as the utility model：The power circuit includes core power circuit, the core
Electrocardio source circuit is classified by analog power circuit and transmission power circuit and is nursed one's health to low-power consumption MCU, NB-IoT module, sensor
Circuit, liquid level sensor and ferroelectric memory power supply.
A kind of preferred embodiment as the utility model：The NB-IoT modules link for BC95；The low-power consumption
MCU is stm32L053.
The utility model has the following advantages compared with prior art：
Liquid level wireless sensor based on NB-IoT disclosed in the utility model realizes liquid level signal acquisition, liquid level number
According to processing, the display of liquid level data scene, liquid level data uploads far-end server by NB-IoT networks.NB-IoT wireless remote transmission liquid
Level sensor power consumption is very low, but use carries lithium battery and works long hours, and solves scene power supply and frequently replaces battery
Problem.NB-IoT technologies solve the problems, such as the places such as basement and inspection shaft signal difference simultaneously.
In the utility model, liquid level signal is converted to electric signal by liquid level sensor.Conditioning Circuits of Sensor passes liquid level
The conditioning of sensor is into available voltage signal.High-precision analog to digital conversion circuit is digital signal conditioned voltage conversion,
It is transmitted to low-power consumption MCU.Data are issued display circuit and provide scene display by low-power consumption MCU.The MCU of low-power consumption passes through digital signal
It crosses relevant treatment and public network is sent to by NB-IoT modules, the data sent not successfully store into ferroelectric memory (next to mend
Hair).Power circuit is powered using classification to MCU, NB-IoT module, modulate circuit, sensor and ferroelectric memory.Classification power supply
Use effectively reduce caused power-supply fluctuation in radiating circuit transmission process Acquisition Circuit must be influenced.
NB-IoT is extensively covered, it will thus provide improved in-door covering, under same frequency range, NB-IoT increases than existing network
Beneficial 20dB, area coverage expand 100 times.Possesses the ability of support magnanimity connection, mono- sector of NB-IoT can support 100,000
Low latency sensitivity, ultralow equipment cost, low equipment power dissipation and the network architecture of optimization are supported in connection；Third, more low-power consumption,
The stand-by time of NB-IoT terminal modules is 10 years.
Description of the drawings
Fig. 1 is a kind of structural principle block diagram of specific embodiment of the utility model.
Specific embodiment
The utility model is described in detail in shown each embodiment below in conjunction with the accompanying drawings, but it should explanation,
These embodiments are not limitation of the utility model, and those of ordinary skill in the art are according to these embodiment institute works
Energy, method or equivalent transformation or replacement in structure, belong within the scope of protection of the utility model.
As shown in Figure 1, it illustrates specific embodiment of the utility model；As shown in the figure, base disclosed in the utility model
In the liquid level wireless sensor of NB-IoT, including liquid level sensor body, Conditioning Circuits of Sensor, high precision analogue conversion electricity
Road, low-power consumption MCU, ferroelectric memory, NB-IoT modules, power circuit and display circuit；
The output terminal connection Conditioning Circuits of Sensor of liquid level sensor body, the output terminal connection of Conditioning Circuits of Sensor are high
Precision analog to digital conversion circuit, the output terminal of high precision analogue conversion circuit are connected to low-power consumption MCU, the output terminal of low-power consumption MCU
Connect NB-IoT modules and display circuit；
The input terminal of the low-power consumption MCU is also associated with ferroelectric memory.
Preferably, as shown in the figure：The power circuit includes core power circuit, and the core power circuit passes through simulation
Power circuit and send power circuit be classified to low-power consumption MCU, NB-IoT module, Conditioning Circuits of Sensor, liquid level sensor and
Ferroelectric memory is powered.
Preferably, as shown in the figure：The NB-IoT modules link for BC95；The low-power consumption MCU is stm32L053.
To sum up, the utility model include liquid level sensor body, Conditioning Circuits of Sensor, high precision analogue conversion circuit,
Low-power consumption MCU, ferroelectric memory, NB-IoT modules, power circuit.
To sum up, the key problem in technology point of the utility model is：
1st, NB-IoT modules have been used, NB-IoT module dissipations are low, and signal is strong, effectively reduce the power consumption of transmission；
2nd, used the MCU of low-power consumption, low-power consumption MCU that there are a variety of low-power consumption modes, acquisition and sky can be greatly reduced
The power consumption of idle；
3rd, using ferroelectric memory as storage unit, ferroelectric memory is low in energy consumption to advantageously reduce power consumption：
4th, controllable power circuit is by the I/O of MCU line related to be controlled to close when correlation module does not work.
5th, using multistage power supply structure, Acquisition Circuit must be influenced by effectively reducing current fluctuation during data are sent out.
The utility model and existing Technical comparing, advantage are：
1st, the power consumption of transmission is effectively reduced using NB-IoT modules, data sending completes module automatically into low-power consumption
Pattern；
2nd, signal sensitivity is significantly improved using NB-IoT modules, improves the use scope of equipment；
3rd, the use of low energy-consumption electronic device effectively reduces stand-by power consumption.
The a series of tool that the feasibility embodiment only for the utility model is described in detail of those listed above
Body illustrates, they are all to be made without departing from the utility model skill spirit not to limit the scope of protection of the utility model
Equivalent implementations or change should be included within the scope of protection of this utility model.
Moreover, it will be appreciated that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
Using specification as an entirety, the technical solutions in each embodiment can also be properly combined, forms those skilled in the art
It is appreciated that other embodiment.
Claims (2)
1. the liquid level wireless sensor based on NB-IoT, it is characterised in that：Including liquid level sensor body, sensor conditioning electricity
Road, high precision analogue conversion circuit, low-power consumption MCU, ferroelectric memory, NB-IoT modules, power circuit and display circuit；
The output terminal connection Conditioning Circuits of Sensor of liquid level sensor body, the output terminal connection high-precision of Conditioning Circuits of Sensor
Analog to digital conversion circuit, the output terminal of high precision analogue conversion circuit are connected to low-power consumption MCU, the output terminal connection of low-power consumption MCU
NB-IoT modules and display circuit；
The input terminal of the low-power consumption MCU is also associated with ferroelectric memory；The power circuit includes core power circuit, described
Core power circuit is classified by analog power circuit and transmission power circuit to low-power consumption MCU, NB-IoT module, sensor tune
Manage circuit, liquid level sensor and ferroelectric memory power supply.
2. the liquid level wireless sensor based on NB-IoT as described in claim 1, it is characterised in that：The NB-IoT modules are
BC95 is linked；The low-power consumption MCU is stm32L053.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721382641.3U CN207439496U (en) | 2017-10-24 | 2017-10-24 | Liquid level wireless sensor based on NB-IoT |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721382641.3U CN207439496U (en) | 2017-10-24 | 2017-10-24 | Liquid level wireless sensor based on NB-IoT |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207439496U true CN207439496U (en) | 2018-06-01 |
Family
ID=62293785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721382641.3U Active CN207439496U (en) | 2017-10-24 | 2017-10-24 | Liquid level wireless sensor based on NB-IoT |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207439496U (en) |
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2017
- 2017-10-24 CN CN201721382641.3U patent/CN207439496U/en active Active
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