CN208805913U - A kind of highly-safe fuel gas detection system based on NB-IOT Internet of Things - Google Patents
A kind of highly-safe fuel gas detection system based on NB-IOT Internet of Things Download PDFInfo
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- CN208805913U CN208805913U CN201820379331.4U CN201820379331U CN208805913U CN 208805913 U CN208805913 U CN 208805913U CN 201820379331 U CN201820379331 U CN 201820379331U CN 208805913 U CN208805913 U CN 208805913U
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Abstract
The highly-safe fuel gas detection system based on NB-IOT Internet of Things that the utility model discloses a kind of, including CPU module and fuel gas detection module, fuel gas detection module further includes chip U7 and operational amplifier U5A, a foot of the model TGS2611 of chip U7, chip U7 connect operational amplifier U5A；CPU module includes chip U3, the model STM8L151K4T6 of chip U3, a foot of operational amplifier U5A connection chip U3.Have the advantage that the gas intelligent alarm system based on Internet of Things, indoor fuel gas detection system, small range combustion gas information fusion point, the server Trinity, the intelligent integral concept often mentioned with present sciemtifec and technical sphere complies fully with, suitable for most inhabitation building, it is at low cost, pollution-free, it is versatile, it is highly-safe.
Description
Technical field
The highly-safe fuel gas detection system based on NB-IOT Internet of Things that the utility model relates to a kind of, belongs to electricity
Sub- detection device technical field.
Background technique
Whether it is more than specific concentration come combustion gas that fuel gas alarm is by the concentration for detecting CO in Air gas
Whether leak, fuel gas alarm currently on the market be all it is single be only capable of alarming in own home, when old man, children are in
In it is extremely dangerous when staying alone.Long-range monitoring has use in the family at present according to investigations, is by monitor that room information is remote
Journey passes, but long-range monitoring is unable to get the case where whether combustion gas leaks.In addition current coal gas detection is also lacked following
Point:
1, poor anti jamming capability, power consumption is big, and application circuit is complicated, and volume is big；
2, sensitivity is low, and flexibility is poor, and detection accuracy is low, and versatility is not strong, and safety is poor.
Utility model content
Problem to be solved in the utility model is provided a kind of based on NB-IOT Internet of Things for original technically insufficient
Highly-safe fuel gas detection system, the gas intelligent alarm system based on Internet of Things, indoor fuel gas detection system, small model
Combustion gas information fusion point, the server Trinity to be enclosed, most inhabitation building is suitable for, Internet of Things knowledge is combined closely, at
This is low, pollution-free, and versatile, highly-safe, strong antijamming capability, low in energy consumption, small in size, application circuit is simple, sensitivity
Height, detection accuracy are high.
To solve the above-mentioned problems, the utility model uses following technical scheme:
A kind of highly-safe fuel gas detection system based on NB-IOT Internet of Things, including CPU module, communication mould
Block, SIM card module, power module, fuel gas detection module, clock module, communication module, fuel gas detection module, when
Clock module connects CPU module, and communication module connects SIM card module, and power module provides power supply for each module；
The fuel gas detection module further includes chip U7 and operational amplifier U5A, the model of chip U7
A foot of TGS2611, chip U7 connect operational amplifier U5A；
The CPU module includes chip U3, the model STM8L151K4T6 of chip U3, operational amplifier U5A connection core
A foot of piece U3.
Further, the CPU module includes chip U3,2 feet of the model STM8L151K4T6 of chip U3, chip U3
It is connected with the one end crystal oscillator Y1 and the one end capacitor C1,3 feet of chip U3 are connected with the crystal oscillator Y1 other end and the one end capacitor C2, capacitor C1
The other end and capacitor C2 other end ground connection；
32 feet of the chip U3 are connected with 2 feet of row needle CON4, and 1 foot of row needle CON4 accesses power supply+3.3V, arranges needle
3 feet of CON4 are grounded, and 4 feet of row needle CON4 are connected with the one end capacitor C13, and connect 1 foot of chip U3, the capacitor C13 other end
Ground connection arranges the external internet ISP1 of needle CON4；9 feet of the chip U3 are connected with the one end resistance R4, the connection of the resistance R4 other end
There are 3 feet of connector J3, the 2 feet ground connection of connector J3, the 1 foot connection+3.3V power supply of connector J3；11 feet of the chip U3
It is connected with the one end resistance R1, the resistance R1 other end is connected with the one end light emitting diode L1, light emitting diode L1 other end ground connection；Core
8 feet of piece U3 access 3.3V power supply, the 7 feet ground connection of chip U3.
Further, the communication module includes chip U4A, and the model BC95 of chip U4A, chip U4A are wireless NB
Chip, 15 feet of chip U4A are connected with the collector of triode Q2, and the base stage of triode Q2 is connected with the one end resistance R3 and resistance
The one end R18, the resistance R3 other end connect 24 feet of chip U3, emitter and the resistance R18 other end ground connection of triode Q2；Chip
53 feet of U4A are connected with the one end capacitor C18, the one end resistance R7, and the resistance R7 other end is connected with the one end capacitor C17, and capacitor C18 is another
One end, capacitor C17 other end ground connection；45 feet of chip U4A and 46 feet connection access VBAT voltage source, 45 feet of chip U4A
It is connected with the one end capacitor EC4, the one end capacitor C20, the one end capacitor C21, the one end capacitor C16, the capacitor EC4 other end, capacitor C20 are another
One end, the capacitor C21 other end, capacitor C16 other end ground connection.
Further, 30 feet of the chip U4A are connected with the one end resistance R14, the one end resistance R6, the resistance R14 other end
27 feet of chip U3 are connected with, the resistance R6 other end is connected with 2 feet of connector J4, and 29 feet of chip U4A are connected with resistance R15
One end, the one end resistance R5, the resistance R15 other end are connected with 28 feet of chip U3, and the resistance R5 other end is connected with the 3 of connector J4
Foot, the 1 foot ground connection of 4 the foot access+3.3V, connector J4 of connector J4, the external COM of connector J4.
Further, the SIM card module includes chip U6 and chip U8, the model ESDA6V8AV5 of chip U6, core
The model MICROSIM clamshell of piece U8,2 feet of chip U8 are connected with the one end resistance R25, the one end resistance R20 and capacitor C22
One end, capacitor C22 other end ground connection, the resistance R25 other end are connected with 5 feet of the one end capacitor C25, chip U8, and resistance R20 is another
End is connected with 40 feet of chip U4A, 38 feet of the 5 feet connection chip U4A of chip U8, and 6 feet of chip U8 connect the 42 of chip U4A
Foot, 3 feet of chip U8 are connected with the one end resistance R22 and the one end capacitor C24, capacitor C24 other end ground connection, the resistance R22 other end
39 feet of chip U4A are connected, 1 foot of chip U8 is connected with the one end resistance R21 and the one end capacitor C23, another termination of capacitor C23
Ground, the resistance R21 other end connect the 41 of chip U4A；
1 foot of the 5 feet connection chip U6 of the chip U8,4 feet of the 2 feet connection chip U6 of chip U8,3 feet of chip U8
Connect 3 feet of chip U6,5 feet of the 1 foot connection chip U6 of chip U8, the 2 feet ground connection of chip U6.
Further, the clock module includes chip U1, the 1 foot connection of the model SD3078 of chip U1, chip U1
There are 19 feet of the one end resistance R9, chip U3, resistance R9 other end access+3.3V power supply, 2 feet of chip U1 are connected with resistance R8 mono-
End, resistance R8 other end access+3.3V power supply, 3 feet of chip U1 are connected with the one end capacitor C3, the one end capacitor C5, and access+
3.3V power supply, the capacitor C3 other end, capacitor C5 other end ground connection, 7 feet of chip U1 are connected with the one end resistance R13, resistance R2 mono-
End, 1 foot of another chip termination U3 of resistance R13, another termination+3.3V power supply of resistance R2,8 feet of chip U1 are connected with resistance
20 feet of the one end R10 and chip U3, resistance R10 other end access+3.3V power supply.
Further, the power module includes chip U2, and 2 feet of the model MIC29302 of chip U2, chip U2 connect
1 foot of chip U2 is connect, 2 feet of chip U2 are connected with the one end capacitor C6, the one end capacitor EC1, and access+5V power supply, and+5V power supply connects
It is connected to connector J2, connector J2 is used for external power supply, the capacitor C6 other end, capacitor EC1 other end ground connection, 3 feet of chip U2
Ground connection, 4 feet of chip U2 are connected with the one end resistance R16, the one end resistance R19, the one end capacitor EC2 and the one end capacitor C7, and export
VBAT voltage source, the resistance R16 other end are connected with the one end resistance R17, and connect 5 feet of chip U2, another termination of resistance R17
Ground, the resistance R19 other end are connected with the one end light emitting diode L3, and the other end of light emitting diode L3 is grounded, and capacitor EC2 is another
End, capacitor C7 other end ground connection.
Further, the power module further includes voltage-stablizer Q1, the model MCP33 of voltage-stablizer Q1, the 3 of voltage-stablizer Q1
Foot accesses VBAT voltage source, and 3 feet of voltage-stablizer Q1 are connected with the one end capacitor C19, capacitor C19 other end ground connection, voltage-stablizer Q1
2 feet ground connection, the 1 foot output+3.3V voltage of voltage-stablizer Q1,1 foot of voltage-stablizer Q1 is connected with the one end capacitor C14, and capacitor C14 is another
One end ground connection.
Further, 3 feet of the operational amplifier U5A are connected with the one end resistance R11, the one end resistance R12 and capacitor C10
One end, the resistance R12 other end and capacitor C10 other end ground connection, another termination+5V power supply of resistance R11, the 8 of operational amplifier U5A
Foot is connected with the one end capacitor C11 and the one end resistance R23, and accesses+5V power supply, capacitor C11 other end ground connection, operational amplifier
1 foot of U5A is connected with 12 feet of the one end capacitor C12, the one end light emitting diode L2 and chip U3, the connection of the one end light emitting diode L2
The resistance R23 other end, capacitor C12 other end ground connection.
Further, 3 feet of the chip U7 and 4 feet connect access+5V power supply, and 4 feet of chip U7 are connected with capacitor C15
One end, the one end capacitor EC3, the capacitor C15 other end, capacitor EC3 other end ground connection；1 foot of chip U7 is connected with resistance R24 mono-
End, resistance R24 other end ground connection, 2 feet of chip U7 are connected with 2 feet of the one end resistance R26 and operational amplifier, and resistance R26 is another
One end is connected with the one end resistance R27 and the one end capacitor C26, the resistance R27 other end and capacitor C26 other end ground connection.
The utility model is had the following technical effect that compared with prior art using above technical scheme
Gas intelligent alarm system of the fuel gas detection system described in the utility model based on Internet of Things, indoor fuel gas
Detection system, small range combustion gas information fusion point, the server Trinity are suitable for most inhabitation building, with Internet of Things
Knowledge is combined closely, at low cost, pollution-free, versatile, highly-safe.
Fuel gas detection system strong antijamming capability, low in energy consumption, small in size, the service life is long, and application circuit is simple, sensitivity
Height, flexibility is good, and detection accuracy is high.
The utility model is described in detail with reference to the accompanying drawings and examples.
Detailed description of the invention
Attached drawing 1 is the circuit diagram of CPU module in the embodiment of the present invention；
Attached drawing 2 is the circuit diagram of communication module in the embodiment of the present invention；
Attached drawing 3 is the circuit diagram of SIM card module in the embodiment of the present invention；
Attached drawing 4 is the circuit diagram of clock module in the embodiment of the present invention；
Attached drawing 5 is the circuit diagram of fuel gas detection module in the embodiment of the present invention；
Attached drawing 6 is the circuit diagram of power module in the embodiment of the present invention.
Specific embodiment
Embodiment 1, as shown in Figures 1 to 6, a kind of highly-safe fuel gas detection system based on NB-IOT Internet of Things
System, including CPU module, communication module, SIM card module, power module, fuel gas detection module, clock module communicate mould
Block, fuel gas detection module, clock module connect CPU module, and communication module connects SIM card module, and power module is each mould
Block provides power supply.
The CPU module includes chip U3, and 2 feet of the model STM8L151K4T6 of chip U3, chip U3 are connected with crystalline substance
Shake the one end Y1 and the one end capacitor C1, and 3 feet of chip U3 are connected with the crystal oscillator Y1 other end and the one end capacitor C2, the capacitor C1 other end and
Capacitor C2 other end ground connection.
32 feet of the chip U3 are connected with 2 feet of row needle CON4, and 1 foot of row needle CON4 accesses power supply+3.3V, arranges needle
3 feet of CON4 are grounded, and 4 feet of row needle CON4 are connected with the one end capacitor C13, and connect 1 foot of chip U3, the capacitor C13 other end
Ground connection arranges the external internet ISP1 of needle CON4；9 feet of the chip U3 are connected with the one end resistance R4, the connection of the resistance R4 other end
There are 3 feet of connector J3, the 2 feet ground connection of connector J3, the 1 foot connection+3.3V power supply of connector J3；11 feet of the chip U3
It is connected with the one end resistance R1, the resistance R1 other end is connected with the one end light emitting diode L1, light emitting diode L1 other end ground connection；Core
8 feet of piece U3 access 3.3V power supply, the 7 feet ground connection of chip U3.
The CPU module long-term working stability is high, it can be achieved that continuous 2-3 the operation is stable, fast response time, when corresponding
Between less than 1 second；Strong antijamming capability is hardly damaged, and failure rate is low, and more current CPU module failure rate reduces by 35% or more.
The communication module includes chip U4A, and the model BC95 of chip U4A, chip U4A are wireless NB chip, chip
15 feet of U4A are connected with the collector of triode Q2, and the base stage of triode Q2 is connected with the one end resistance R3 and the one end resistance R18,
The resistance R3 other end connects 24 feet of chip U3, emitter and the resistance R18 other end ground connection of triode Q2；The 53 of chip U4A
Foot is connected with the one end capacitor C18, the one end resistance R7, and the resistance R7 other end is connected with the one end capacitor C17, the capacitor C18 other end, electricity
Hold C17 other end ground connection；45 feet of chip U4A and 46 feet connection access VBAT voltage source, 45 feet of chip U4A are connected with electricity
Hold the one end EC4, the one end capacitor C20, the one end capacitor C21, the one end capacitor C16, the capacitor EC4 other end, the capacitor C20 other end, electricity
Hold the C21 other end, capacitor C16 other end ground connection；30 feet of the chip U4A are connected with the one end resistance R14, the one end resistance R6,
The resistance R14 other end is connected with 27 feet of chip U3, and the resistance R6 other end is connected with 2 feet of connector J4,29 feet of chip U4A
It is connected with the one end resistance R15, the one end resistance R5, the resistance R15 other end is connected with 28 feet of chip U3, the connection of the resistance R5 other end
There are 3 feet of connector J4, the 1 foot ground connection of 4 the foot access+3.3V, connector J4 of connector J4, the external COM of connector J4.
The communication module has high reliability and brilliant long-time stability, super low-power consumption, hypersensitivity micro-
Small external form volume design, easy for installation, fast response time, strong antijamming capability；Terminal device can be met to the maximum extent to small
The demand of size module product simultaneously effective reduces air detection system size and optimizes production cost, can be compatible with shifting
The M35 module of remote communication GSM/GPRS series.
The SIM card module includes chip U6 and chip U8, the model ESDA6V8AV5 of chip U6, the model of chip U8
For MICROSIM clamshell, 2 feet of chip U8 are connected with the one end resistance R25, the one end resistance R20 and the one end capacitor C22, capacitor
C22 other end ground connection, the resistance R25 other end are connected with 5 feet of the one end capacitor C25, chip U8, and the resistance R20 other end is connected with
40 feet of chip U4A, 38 feet of the 5 feet connection chip U4A of chip U8,42 feet of the 6 feet connection chip U4A of chip U8, chip
3 feet of U8 are connected with the one end resistance R22 and the one end capacitor C24, capacitor C24 other end ground connection, and the resistance R22 other end connects chip
39 feet of U4A, 1 foot of chip U8 are connected with the one end resistance R21 and the one end capacitor C23, capacitor C23 other end ground connection, resistance R21
The other end connects the 41 of chip U4A.
1 foot of the 5 feet connection chip U6 of the chip U8,4 feet of the 2 feet connection chip U6 of chip U8,3 feet of chip U8
Connect 3 feet of chip U6,5 feet of the 1 foot connection chip U6 of chip U8, the 2 feet ground connection of chip U6.
The clock module includes chip U1, and 1 foot of the model SD3078 of chip U1, chip U1 are connected with resistance R9 mono-
It holds, 19 feet of chip U3, resistance R9 other end access+3.3V power supply, 2 feet of chip U1 are connected with the one end resistance R8, resistance R8
Other end access+3.3V power supply, 3 feet of chip U1 are connected with the one end capacitor C3, the one end capacitor C5, and access+3.3V power supply, electricity
Hold the C3 other end, capacitor C5 other end ground connection, 7 feet of chip U1 are connected with the one end resistance R13, the one end resistance R2, and resistance R13 is another
1 foot of one chip termination U3, another termination+3.3V power supply of resistance R2,8 feet of chip U1 are connected with the one end resistance R10 and chip
20 feet of U3, resistance R10 other end access+3.3V power supply.
The clock module stable output signal is high, and control errors are in 0.2%, high reliablity, realizes in room temperature and width
User intervention, the high-precision of full-automatic, full power environment compensation, highly reliable clocking capability are not required in warm range, according to different
Voltage is switched to VBAT from VDD automatically or is switched to VDD from VBAT.
The power module includes chip U2, the 2 feet connection chip U2's of the model MIC29302 of chip U2, chip U2
1 foot, 2 feet of chip U2 are connected with the one end capacitor C6, the one end capacitor EC1, and access+5V power supply, and+5V power supply is connected with connector
J2, connector J2 are used for external power supply, the capacitor C6 other end, capacitor EC1 other end ground connection, the 3 feet ground connection of chip U2, chip U2
4 feet be connected with the one end resistance R16, the one end resistance R19, the one end capacitor EC2 and the one end capacitor C7, and export VBAT voltage electricity
Source, the resistance R16 other end are connected with the one end resistance R17, and connect 5 feet of chip U2, resistance R17 other end ground connection, resistance R19
The other end is connected with the one end light emitting diode L3, and the other end ground connection of light emitting diode L3, the capacitor EC2 other end, capacitor C7 are another
One end ground connection.
The power module further includes voltage-stablizer Q1, the 3 feet access of the model MCP33 of voltage-stablizer Q1, voltage-stablizer Q1
VBAT voltage source, 3 feet of voltage-stablizer Q1 are connected with the one end capacitor C19, capacitor C19 other end ground connection, and 2 feet of voltage-stablizer Q1 connect
Ground, the 1 foot output+3.3V voltage of voltage-stablizer Q1,1 foot of voltage-stablizer Q1 are connected with the one end capacitor C14, another termination of capacitor C14
Ground.
The power module output is stablized, and the different voltages that exportable each module needs, control errors are in 0.2%, reliably
Property high, long service life.
The combustible gas detection module includes operational amplifier U5A, and 3 feet of operational amplifier U5A are connected with resistance R11 mono-
End, the one end resistance R12 and the one end capacitor C10, the resistance R12 other end and capacitor C10 other end ground connection, another termination of resistance R11+
5V power supply, 8 feet of operational amplifier U5A are connected with the one end capacitor C11 and the one end resistance R23, and access+5V power supply, capacitor C11
Other end ground connection, 1 foot of operational amplifier U5A are connected with the 12 of the one end capacitor C12, the one end light emitting diode L2 and chip U3
Foot, the one end light emitting diode L2 connect the resistance R23 other end, capacitor C12 other end ground connection.
The fuel gas detection module further includes chip U7, the model TGS2611 of chip U7,3 feet of chip U7 and 4
Foot connects access+5V power supply, and 4 feet of chip U7 are connected with the one end capacitor C15, the one end capacitor EC3, the capacitor C15 other end, capacitor
EC3 other end ground connection；1 foot of chip U7 is connected with the one end resistance R24, resistance R24 other end ground connection, the 2 feet connection of chip U7
There are the one end resistance R26 and 2 feet of operational amplifier U5A, the resistance R26 other end is connected with the one end resistance R27 and capacitor C26 mono-
End, the resistance R27 other end and capacitor C26 other end ground connection.
The fuel gas detection module is low in energy consumption, and small in size, the service life is long, and at low cost, application circuit is simple, sensitivity
Height, detection accuracy is high, and flexibility is good.
Gas intelligent alarm system based on Internet of Things, indoor fuel gas detection system, small range combustion gas information fusion point, clothes
The business device Trinity, the intelligent integral concept often mentioned with present sciemtifec and technical sphere comply fully with, and are suitable for most inhabitation
Building, the design are combined closely with Internet of Things knowledge, in line with the theory that the lives and properties for people provide safeguard, at low cost, nothing
Pollution, it is versatile, it is highly-safe.
When there is gas leakage, automatic alarm system sound-light alarm in room while, can also pass through NB-IOT module
The information of gas leakage is passed into NB-IOT platform of internet of things, while being passed at final Property Management of residence and with webpage
Mode intuitively shows, this just constitutes complete Internet of things system, while can also incite somebody to action in the form of short message (alarm)
Message is sent to corresponding resident, multiple security is constituted, to reduce unnecessary injury.
The above is the citing of the utility model preferred forms, wherein the part that do not address in detail is this field
The common knowledge of those of ordinary skill.The protection scope of the utility model is based on the contents of the claims, any to be based on this reality
The equivalent transformation carried out with novel technical inspiration, is also within the protection scope of the utility model.
Claims (10)
1. a kind of highly-safe fuel gas detection system based on NB-IOT Internet of Things, it is characterised in that: including CPU mould
Block, communication module, SIM card module, power module, fuel gas detection module, clock module, communication module, combustible gas physical examination
Module, clock module connection CPU module are surveyed, communication module connects SIM card module, and power module provides power supply for each module；
The fuel gas detection module further includes chip U7 and operational amplifier U5A, the model TGS2611 of chip U7, core
A foot of piece U7 connects operational amplifier U5A；
The CPU module includes chip U3, the model STM8L151K4T6 of chip U3, operational amplifier U5A connection chip U3
A foot.
2. a kind of highly-safe fuel gas detection system based on NB-IOT Internet of Things as described in claim 1, special
Sign is: the CPU module includes chip U3, and 2 feet of the model STM8L151K4T6 of chip U3, chip U3 are connected with crystal oscillator
The one end Y1 and the one end capacitor C1,3 feet of chip U3 are connected with the crystal oscillator Y1 other end and the one end capacitor C2, the capacitor C1 other end and electricity
Hold C2 other end ground connection；
32 feet of the chip U3 are connected with 2 feet of row needle CON4, and 1 foot of row needle CON4 accesses power supply+3.3V, row needle CON4's
4 feet of 3 feet ground connection, row needle CON4 are connected with the one end capacitor C13, and connect 1 foot of chip U3, capacitor C13 other end ground connection, row
The external internet ISP1 of needle CON4；9 feet of the chip U3 are connected with the one end resistance R4, and the resistance R4 other end is connected with connector
3 feet of J3, the 2 feet ground connection of connector J3, the 1 foot connection+3.3V power supply of connector J3；11 feet of the chip U3 are connected with electricity
The one end R1 is hindered, the resistance R1 other end is connected with the one end light emitting diode L1, light emitting diode L1 other end ground connection；The 8 of chip U3
Foot accesses 3.3V power supply, the 7 feet ground connection of chip U3.
3. a kind of highly-safe fuel gas detection system based on NB-IOT Internet of Things as described in claim 1, special
Sign is: the communication module includes chip U4A, and the model BC95 of chip U4A, chip U4A are wireless NB chip, chip
15 feet of U4A are connected with the collector of triode Q2, and the base stage of triode Q2 is connected with the one end resistance R3 and the one end resistance R18,
The resistance R3 other end connects 24 feet of chip U3, emitter and the resistance R18 other end ground connection of triode Q2；The 53 of chip U4A
Foot is connected with the one end capacitor C18, the one end resistance R7, and the resistance R7 other end is connected with the one end capacitor C17, the capacitor C18 other end, electricity
Hold C17 other end ground connection；45 feet of chip U4A and 46 feet connection access VBAT voltage source, 45 feet of chip U4A are connected with electricity
Hold the one end EC4, the one end capacitor C20, the one end capacitor C21, the one end capacitor C16, the capacitor EC4 other end, the capacitor C20 other end, electricity
Hold the C21 other end, capacitor C16 other end ground connection.
4. a kind of highly-safe fuel gas detection system based on NB-IOT Internet of Things as claimed in claim 3, special
Sign is: 30 feet of the chip U4A are connected with the one end resistance R14, the one end resistance R6, and the resistance R14 other end is connected with chip
27 feet of U3, the resistance R6 other end are connected with 2 feet of connector J4, and 29 feet of chip U4A are connected with the one end resistance R15, resistance
The one end R5, the resistance R15 other end are connected with 28 feet of chip U3, and the resistance R5 other end is connected with 3 feet of connector J4, connector
1 foot of 4 the foot access+3.3V, connector J4 of J4 is grounded, the external COM of connector J4.
5. a kind of highly-safe fuel gas detection system based on NB-IOT Internet of Things as described in claim 1, special
Sign is: the SIM card module includes chip U6 and chip U8, the model ESDA6V8AV5 of chip U6, the model of chip U8
For MICROSIM clamshell, 2 feet of chip U8 are connected with the one end resistance R25, the one end resistance R20 and the one end capacitor C22, capacitor
C22 other end ground connection, the resistance R25 other end are connected with 5 feet of the one end capacitor C25, chip U8, and the resistance R20 other end is connected with
40 feet of chip U4A, 38 feet of the 5 feet connection chip U4A of chip U8,42 feet of the 6 feet connection chip U4A of chip U8, chip
3 feet of U8 are connected with the one end resistance R22 and the one end capacitor C24, capacitor C24 other end ground connection, and the resistance R22 other end connects chip
39 feet of U4A, 1 foot of chip U8 are connected with the one end resistance R21 and the one end capacitor C23, capacitor C23 other end ground connection, resistance R21
The other end connects the 41 of chip U4A；
1 foot of the 5 feet connection chip U6 of the chip U8,4 feet of the 2 feet connection chip U6 of chip U8, the 3 feet connection of chip U8
3 feet of chip U6,5 feet of the 1 foot connection chip U6 of chip U8, the 2 feet ground connection of chip U6.
6. a kind of highly-safe fuel gas detection system based on NB-IOT Internet of Things as described in claim 1, special
Sign is: the clock module includes chip U1, and 1 foot of the model SD3078 of chip U1, chip U1 are connected with resistance R9 mono-
It holds, 19 feet of chip U3, resistance R9 other end access+3.3V power supply, 2 feet of chip U1 are connected with the one end resistance R8, resistance R8
Other end access+3.3V power supply, 3 feet of chip U1 are connected with the one end capacitor C3, the one end capacitor C5, and access+3.3V power supply, electricity
Hold the C3 other end, capacitor C5 other end ground connection, 7 feet of chip U1 are connected with the one end resistance R13, the one end resistance R2, and resistance R13 is another
1 foot of one chip termination U3, another termination+3.3V power supply of resistance R2,8 feet of chip U1 are connected with the one end resistance R10 and chip
20 feet of U3, resistance R10 other end access+3.3V power supply.
7. a kind of highly-safe fuel gas detection system based on NB-IOT Internet of Things as described in claim 1, special
Sign is: the power module includes chip U2, and 2 feet of the model MIC29302 of chip U2, chip U2 connect the 1 of chip U2
Foot, 2 feet of chip U2 are connected with the one end capacitor C6, the one end capacitor EC1, and access+5V power supply, and+5V power supply is connected with connector
J2, connector J2 are used for external power supply, the capacitor C6 other end, capacitor EC1 other end ground connection, the 3 feet ground connection of chip U2, chip U2
4 feet be connected with the one end resistance R16, the one end resistance R19, the one end capacitor EC2 and the one end capacitor C7, and export VBAT voltage electricity
Source, the resistance R16 other end are connected with the one end resistance R17, and connect 5 feet of chip U2, resistance R17 other end ground connection, resistance R19
The other end is connected with the one end light emitting diode L3, and the other end ground connection of light emitting diode L3, the capacitor EC2 other end, capacitor C7 are another
One end ground connection.
8. a kind of highly-safe fuel gas detection system based on NB-IOT Internet of Things as described in claim 1, special
Sign is: the power module further includes voltage-stablizer Q1, and 3 feet of the model MCP33 of voltage-stablizer Q1, voltage-stablizer Q1 access VBAT
Voltage source, 3 feet of voltage-stablizer Q1 are connected with the one end capacitor C19, and 2 feet of capacitor C19 other end ground connection, voltage-stablizer Q1 are grounded,
The 1 foot output+3.3V voltage of voltage-stablizer Q1,1 foot of voltage-stablizer Q1 are connected with the one end capacitor C14, capacitor C14 other end ground connection.
9. a kind of highly-safe fuel gas detection system based on NB-IOT Internet of Things as described in claim 1, special
Sign is: 3 feet of the operational amplifier U5A are connected with the one end resistance R11, the one end resistance R12 and the one end capacitor C10, resistance
The R12 other end and capacitor C10 other end ground connection, another termination+5V power supply of resistance R11,8 feet of operational amplifier U5A are connected with
The one end capacitor C11 and the one end resistance R23, and+5V power supply is accessed, 1 foot of capacitor C11 other end ground connection, operational amplifier U5A connects
12 feet of the one end capacitor C12, the one end light emitting diode L2 and chip U3 are connected to, it is another that the one end light emitting diode L2 connects resistance R23
One end, capacitor C12 other end ground connection.
10. a kind of highly-safe fuel gas detection system based on NB-IOT Internet of Things as described in claim 1, special
Sign is: 3 feet of the chip U7 and 4 feet connect access+5V power supply, and 4 feet of chip U7 are connected with the one end capacitor C15, capacitor
The one end EC3, the capacitor C15 other end, capacitor EC3 other end ground connection；1 foot of chip U7 is connected with the one end resistance R24, resistance R24
Other end ground connection, 2 feet of chip U7 are connected with the one end resistance R26 and 2 feet of operational amplifier U5A, the connection of the resistance R26 other end
There are the one end resistance R27 and the one end capacitor C26, the resistance R27 other end and capacitor C26 other end ground connection.
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| CN201820379331.4U CN208805913U (en) | 2018-03-20 | 2018-03-20 | A kind of highly-safe fuel gas detection system based on NB-IOT Internet of Things |
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| CN201820379331.4U CN208805913U (en) | 2018-03-20 | 2018-03-20 | A kind of highly-safe fuel gas detection system based on NB-IOT Internet of Things |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685733A (en) * | 2021-08-23 | 2021-11-23 | 宁波天鑫金属软管有限公司 | Gas pipeline monitoring circuit based on intelligent gateway |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685733A (en) * | 2021-08-23 | 2021-11-23 | 宁波天鑫金属软管有限公司 | Gas pipeline monitoring circuit based on intelligent gateway |
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