CN211176335U - Remote low-power consumption natural gas leakage detection intelligent terminal - Google Patents
Remote low-power consumption natural gas leakage detection intelligent terminal Download PDFInfo
- Publication number
- CN211176335U CN211176335U CN201922154487.XU CN201922154487U CN211176335U CN 211176335 U CN211176335 U CN 211176335U CN 201922154487 U CN201922154487 U CN 201922154487U CN 211176335 U CN211176335 U CN 211176335U
- Authority
- CN
- China
- Prior art keywords
- concentration sensor
- methane concentration
- natural gas
- power supply
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 148
- 239000003345 natural gas Substances 0.000 title claims abstract description 34
- 238000001514 detection method Methods 0.000 title claims abstract description 26
- 238000004891 communication Methods 0.000 claims abstract description 17
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 11
- 230000003321 amplification Effects 0.000 claims description 11
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 7
- 239000003990 capacitor Substances 0.000 claims description 6
- 230000006870 function Effects 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 7
- 238000012423 maintenance Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- 238000007689 inspection Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The utility model relates to a long-range low-power consumption natural gas leakage detection intelligent terminal, the communication module power supply is given to 3.6V power supply part of high capacity lithium cell, and another part converts 3.0V to give other devices power supplies of circuit board through L DO power conversion chip, and embedded MCU accomplishes the IO state, the reading of methane concentration sensor information is handled, and this information real-time transmission acquires communication information and acquires positional information at GPS orientation module to NB-IoT communication module, and this information reaches NB-IOT basic station.
Description
Technical Field
The utility model belongs to the information control field relates to the leakage detection who adopts the information means to the natural gas, especially a long-range low-power consumption natural gas leakage detection intelligent terminal.
Background
At present, natural gas leakage detection is mainly realized by active natural gas detection equipment or manual field inspection by regularly using handheld equipment. The active natural gas detection equipment needs an external power supply, the application environment is limited, the cable laying and pulling of each detection point cannot be realized, the cable laying and pulling cost is huge, and the manual regular use of the handheld equipment for field inspection needs a large amount of manpower and material resource cost due to the fact that the number of the natural gas detection points is huge and the natural gas detection points are distributed dispersedly; and the detection time is delayed, so that the detection and alarm cannot be timely carried out at the initial stage of leakage, and the potential safety hazard is huge.
Through the search of published patent documents, the following two patents related to the present patent application are found:
1. a natural gas leakage detection alarm (cn206726425U) comprises a singlechip, a power supply module, a reset circuit, a crystal oscillator circuit, a natural gas sensor, an analog-to-digital converter, an audible and visual alarm module, a wireless communication module and an electromagnetic valve; the electromagnetic valve is arranged on an air outlet pipeline of the natural gas pipeline; the power supply module, the reset circuit, the crystal oscillator circuit, the analog-to-digital converter, the sound-light alarm module, the wireless communication module and the electromagnetic valve are all connected with the single chip microcomputer, and the natural gas sensor is connected with the single chip microcomputer through the analog-to-digital converter; the single chip microcomputer is communicated with an external intelligent terminal or a monitoring server through a wireless communication module. The utility model discloses have local warning and remote alarm function, can also turn off the pipeline of giving vent to anger of natural gas through the solenoid valve to avoid the emergence of accident.
2. A laser detection device (cn 107237983A) for detecting natural gas leakage comprises a central processing unit, a power supply, a laser methane concentration sensor, a digital-to-analog converter, a memory, a L CD touch screen, an alarm device and a remote monitoring system, wherein the laser methane concentration sensor is connected with the digital-to-analog converter, the power supply, the digital-to-analog converter, a L CD touch screen and the alarm device are respectively connected with the central processing unit, the remote monitoring system comprises a remote monitoring terminal and a wireless transmission module, and the wireless transmission module is connected with the central processing unit.
Through the comparison of technical characteristics, the two publications and the patent application have different purposes and technical schemes, and the novelty and the creativity of the patent application cannot be damaged.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide a remote low-power consumption natural gas leakage detection intelligent terminal which is powered by a high-energy lithium battery without adopting a wired mode and is ultra-low in power consumption and free from maintenance; the manual timing on-site inspection is not needed, and a large amount of manpower and material resource cost is saved.
The purpose of the utility model is realized like this:
a remote low-power consumption natural gas leakage detection intelligent terminal comprises a high-capacity lithium battery, a power supply conversion module, an embedded MCU, a BC20 module and a methane concentration sensor interface module, wherein the BC20 module integrates the functions of an NB-IoT communication module and a GPS positioning module at the same time, and the methane concentration sensor interface module is connected with a methane concentration sensor.
The methane concentration sensor interface module comprises a low-threshold P-channel mos tube Q1, NPN switching triodes Q2, Q3 and Q4, and a boosting circuit consisting of a power inductor L1, a boosting chip U4, a diode D2, a resistor R14 and a capacitor C4, wherein a high-level signal of S _ PWR _ EN on the embedded MCU turns on the NPN switching triodes Q2, Q3 and Q4 and the low-threshold P-channel mos tube Q1, the Q1 and the Q4 control the input value of lithium battery voltage to the boosting circuit, the boosting circuit converts the input 3.6V power into 5V power, the Q3, the Q4 and a peripheral resistance-capacitance loop control the connection and disconnection of a USART-to-P2 connector of the MCU, and the front end of the P2 connector is respectively provided with adjusting resistors R19, R21 and R22.
Moreover, the methane concentration sensor is provided with analog output and serial port USART output, and the methane concentration sensor selects a communication mode by adjusting resistance values of adjusting resistors R19, R21 and R22.
The power supply circuit of the methane concentration sensor comprises a power supply conversion chip U1, a reference power supply chip D1 and a current limiting resistor R1, wherein the voltage conversion chip U1 converts an input 5V power supply into a 3.0 power supply, and the reference power supply chip D1 and the circuit formed by the R1 output a reference 1.25V power supply to the analog circuit.
And the connection circuit of the methane concentration sensor interface module and the embedded MCU comprises a methane concentration sensor U3, a bridge circuit and a differential amplification circuit, the model of the methane concentration sensor is 4P-75C, the bridge circuit is composed of resistors R7, R8 and R9, the differential amplification circuit is composed of an operational amplifier U2 and a peripheral resistor-capacitor, the methane concentration sensor U3 simulates output information, an analog voltage signal is output according to the natural gas concentration of the environment, the analog voltage signal enters the differential amplification circuit for amplification after passing through the bridge circuit, and the analog voltage signal is output to the embedded MCU through a P1 interface for ADC sampling processing.
The utility model has the advantages that:
1. the utility model has scientific design and ingenious conception, the intelligent terminal for detecting natural gas leakage does not adopt a wired mode, is powered by the high-energy lithium battery, and has ultralow power consumption and no maintenance; the manual timing on-site inspection is not needed, and a large amount of manpower and material resource cost is saved.
2. The utility model discloses by natural gas concentration in natural gas leakage test section's the sensor monitoring environment, when natural gas concentration reaches triggerable detection device, trigger alarm mechanism and activate the GPS location portion, report to system's management and control platform by NB-IoT communication part with the information, system's management and control platform is reported to the police to system production work order, give appointed fortune dimension personnel's cell-phone with work order information propelling movement, carries out on-the-spot fortune dimension.
Drawings
Fig. 1 is a block diagram of a control circuit of the present invention;
fig. 2 is a schematic circuit diagram of the interface module of the methane concentration sensor of the present invention;
fig. 3 is a schematic diagram of a power circuit of the interface module of the methane concentration sensor of the present invention;
fig. 4 is the connecting circuit schematic diagram of the methane concentration sensor interface module and the embedded MCU of the present invention.
Detailed Description
The invention will be further illustrated with reference to the following examples: the following examples are illustrative and not intended to be limiting, and the scope of the present invention is not limited by the following examples.
The utility model provides a long-range low-power consumption natural gas leakage detection intelligent terminal, contain the high capacity lithium cell, the power conversion module, embedded MCU, BC20 module, methane concentration sensor interface module, BC20 module has integrated the function of NB-IoT communication module and GPS orientation module simultaneously, methane concentration sensor interface module connects methane concentration sensor, 3.6V power supply part of high capacity lithium cell supplies power for communication module, another part converts 3.0V through L DO power conversion chip and supplies power for other devices of circuit board, embedded MCU is the stm 32L 151 singlechip of ST producer, can accomplish IO state, reading processing of methane concentration sensor information, this information real-time transmission is handled to BC20, promptly obtain communication information at NB-IoT communication module and obtain positional information at GPS orientation module, this information passes to NB-IOT basic station, the basic station generates the work order, and give operation and maintenance personnel the work order push.
The circuit schematic diagram of the methane concentration sensor interface module is shown in fig. 2, and comprises a low-threshold P-channel mos tube Q1, an NPN switching triode Q2, Q3 and Q4, and a boosting circuit consisting of a power inductor L1, a boosting chip U4, a diode D2, a resistor R14 and a capacitor C4, wherein a high-level signal of S _ PWR _ EN on an MCU turns on the NPN switching triode Q2, the Q3 and the Q4 and the low-threshold P-channel mos tube Q1, the Q1 and the Q4 control the input value of lithium battery voltage to the boosting circuit, the boosting circuit converts the input 3.6V power into a 5V power, the Q3, the Q4 and a peripheral resistance-capacitance loop control the connection and disconnection of a USART-to-P2 connector of the MCU, the front end of the P2 connector is respectively provided with adjusting resistors R19, R21 and R22, and the methane concentration sensor is selected by adjusting the resistance values of the three USART outputs.
Referring to fig. 3, the power supply circuit schematic diagram of the methane concentration sensor includes a power supply conversion chip U1, a reference power supply chip D1 and a current limiting resistor R1, wherein the voltage conversion chip U1 converts an input 5V power supply into a 3.0 power supply, and a circuit composed of the reference power supply chip D1 and the reference power supply chip R1 can output a reference 1.25V power supply to an analog circuit.
The methane concentration sensor interface module and the embedded MCU are connected through a schematic diagram shown in FIG. 4, and the methane concentration sensor interface module and the embedded MCU comprise a methane concentration sensor U3, a bridge circuit and a differential amplification circuit, wherein the model of the methane concentration sensor is 4P-75C, the bridge circuit is composed of resistors R7, R8 and R9, and the differential amplification circuit is composed of an operational amplifier U2 and a peripheral resistor-capacitor. The methane concentration sensor U3 simulates output information, outputs an analog voltage signal according to the natural gas concentration of the environment, enters a differential amplification circuit for amplification after passing through a bridge circuit, and is output to the embedded MCU through a P1 interface for ADC sampling processing.
Circuit portions not described in detail in this embodiment, including some peripheral circuits, may be considered as prior art; although not described in detail, or otherwise clear, it does not affect the technical integrity of the present patent application.
The utility model discloses a theory of operation is:
the intelligent terminal is powered by a high-capacity high-energy lithium battery, and maintenance-free can be realized through NB-IoT communication with ultralow power consumption. The sensor of the natural gas leakage detection part monitors the natural gas concentration in the environment, when the natural gas concentration reaches the triggerable detection device, the alarm mechanism is triggered to activate the GPS positioning part, the NB-IoT communication part reports the information to the system control platform, the system control platform gives an alarm, the system produces a work order, and the work order information is pushed to a mobile phone of an appointed operation and maintenance person to carry out on-site operation and maintenance.
Claims (5)
1. A remote low-power consumption natural gas leakage detection intelligent terminal comprises a high-capacity lithium battery, a power supply conversion module, an embedded MCU, a BC20 module and a methane concentration sensor interface module, wherein the BC20 module integrates the functions of an NB-IoT communication module and a GPS positioning module at the same time, and the methane concentration sensor interface module is connected with a methane concentration sensor.
2. The remote low-power consumption natural gas leakage detection intelligent terminal as claimed in claim 1, wherein the methane concentration sensor interface module comprises a low-threshold P-channel mos tube Q1, NPN switching triodes Q2, Q3 and Q4, and a boost circuit composed of a power inductor L1, a boost chip U4, a diode D2, a resistor R14 and a capacitor C4, wherein a high-level signal of S _ PWR _ EN on the embedded MCU turns on NPN switching triodes Q2, Q3 and Q4 and the low-threshold P-channel mos tube Q1, Q1 and Q4 control the input value of the lithium battery voltage to the boost circuit, the boost circuit converts the input 3.6V power into a 5V power, Q3, Q4 and a peripheral resistance-capacitance loop control the make-and-break of a USART-P2 connector of the MCU, and the front end of the P2 connector is respectively provided with adjusting resistors R19, R21 and R22.
3. The remote low-power consumption natural gas leakage detection intelligent terminal of claim 1, characterized in that: the methane concentration sensor is provided with analog output and serial ports USART output, and makes the methane concentration sensor select communication mode through adjusting resistance R19, R21, R22 resistance.
4. The remote low-power consumption natural gas leakage detection intelligent terminal of claim 1, characterized in that: the power supply circuit of the methane concentration sensor comprises a power supply conversion chip U1, a reference power supply chip D1 and a current-limiting resistor R1, wherein an input 5V power supply is converted into a 3.0 power supply by a voltage conversion chip U1, and a reference 1.25V power supply is output to an analog circuit by a circuit consisting of the reference power supply chip D1 and an R1.
5. The remote low-power consumption natural gas leakage detection intelligent terminal of claim 1, characterized in that: the connection circuit of the methane concentration sensor interface module and the embedded MCU comprises a methane concentration sensor U3, a bridge circuit and a differential amplification circuit, the model of the methane concentration sensor is 4P-75C, the bridge circuit is composed of resistors R7, R8 and R9, the differential amplification circuit is composed of an operational amplifier U2 and a peripheral resistor-capacitor, the methane concentration sensor U3 simulates output information, an analog voltage signal is output according to the natural gas concentration of the environment, the analog voltage signal enters the differential amplification circuit to be amplified after passing through the bridge circuit, and the analog voltage signal is output to the embedded MCU through a P1 interface to be subjected to ADC sampling processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922154487.XU CN211176335U (en) | 2019-12-05 | 2019-12-05 | Remote low-power consumption natural gas leakage detection intelligent terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922154487.XU CN211176335U (en) | 2019-12-05 | 2019-12-05 | Remote low-power consumption natural gas leakage detection intelligent terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211176335U true CN211176335U (en) | 2020-08-04 |
Family
ID=71825131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922154487.XU Active CN211176335U (en) | 2019-12-05 | 2019-12-05 | Remote low-power consumption natural gas leakage detection intelligent terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211176335U (en) |
-
2019
- 2019-12-05 CN CN201922154487.XU patent/CN211176335U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101949811A (en) | Portable toxic gas wireless monitoring device and toxic gas wireless monitoring method | |
| CN101915597A (en) | Indoor environment monitoring system | |
| CN201716041U (en) | Indoor environment monitoring system | |
| CN108760981A (en) | A kind of remote controlled air quality detector | |
| CN203101981U (en) | Environmental monitoring system | |
| CN209208784U (en) | A kind of railway signals equipment mobile monitoring device based on DSP | |
| CN211176335U (en) | Remote low-power consumption natural gas leakage detection intelligent terminal | |
| CN202363032U (en) | Intelligent stake | |
| CN105548502B (en) | A kind of air quality detector | |
| CN201378797Y (en) | Monitoring device for voltage input and current output | |
| CN101526563B (en) | Motoring device for current input voltage output | |
| CN210664560U (en) | Humidity sensing intelligent terminal with GPS positioning function | |
| CN106442869B (en) | Low power-consumption intelligent SO2Sensor module | |
| Ru et al. | Design of Raindrop detector based on Arduino | |
| CN212305389U (en) | Intelligent school bus system | |
| CN205080591U (en) | Personnel schedule monitoring management system | |
| CN203799678U (en) | Nuclear power plant liquid level and liquid temperature measurement device based on integrated electric contact sensor | |
| CN202189453U (en) | Device used for remotely sensing and monitoring physical quantity of self-organized network with low power consumption | |
| CN209400618U (en) | A kind of high-tension cable monitoring device | |
| CN202177973U (en) | Portable detector of vehicle | |
| CN203241550U (en) | SCM(single chip microcomputer)-based environment remote monitoring device | |
| CN203149761U (en) | Singlechip-based fire alarm control system | |
| CN102354451B (en) | Portable vehicle detector | |
| CN207051764U (en) | Key wakeup circuit and its manufactured meter reading terminal | |
| CN205862552U (en) | There is the wireless acoustooptic alarm of circuit testing function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An intelligent terminal for remote low-power natural gas leakage detection Effective date of registration: 20220630 Granted publication date: 20200804 Pledgee: Bohai Bank Co.,Ltd. Tianjin Branch Pledgor: TIANJIN YAOTONG TECHNOLOGY CO.,LTD. Registration number: Y2022120000041 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20200804 Pledgee: Bohai Bank Co.,Ltd. Tianjin Branch Pledgor: TIANJIN YAOTONG TECHNOLOGY CO.,LTD. Registration number: Y2022120000041 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A Remote Low Power Natural Gas Leakage Detection Intelligent Terminal Granted publication date: 20200804 Pledgee: Bohai Bank Co.,Ltd. Tianjin Branch Pledgor: TIANJIN YAOTONG TECHNOLOGY CO.,LTD. Registration number: Y2024120000003 |