CN113339700A - Safety monitoring system for gas tank - Google Patents
Safety monitoring system for gas tank Download PDFInfo
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- CN113339700A CN113339700A CN202110599850.8A CN202110599850A CN113339700A CN 113339700 A CN113339700 A CN 113339700A CN 202110599850 A CN202110599850 A CN 202110599850A CN 113339700 A CN113339700 A CN 113339700A
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- gas tank
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 33
- 238000012545 processing Methods 0.000 claims abstract description 29
- 230000010365 information processing Effects 0.000 claims abstract description 8
- 238000004422 calculation algorithm Methods 0.000 claims description 18
- 238000004891 communication Methods 0.000 claims description 10
- 238000013473 artificial intelligence Methods 0.000 claims description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical group [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 4
- 229910052744 lithium Inorganic materials 0.000 claims description 4
- 230000001133 acceleration Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000007619 statistical method Methods 0.000 claims description 3
- 239000003034 coal gas Substances 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 238000007405 data analysis Methods 0.000 abstract description 2
- 238000007689 inspection Methods 0.000 abstract description 2
- 239000003990 capacitor Substances 0.000 description 9
- 230000008901 benefit Effects 0.000 description 5
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/002—Details of vessels or of the filling or discharging of vessels for vessels under pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/026—Special adaptations of indicating, measuring, or monitoring equipment having the temperature as the parameter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B3/00—Audible signalling systems; Audible personal calling systems
- G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/0439—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/0482—Acceleration
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/02—Improving properties related to fluid or fluid transfer
- F17C2260/028—Avoiding unauthorised transfer
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention relates to a safety monitoring system for a gas tank, and belongs to the field of circuit monitoring. The system comprises a data sensing and processing module and a platform monitoring center which are connected with each other; the data sensing and processing module comprises a sensor unit, a positioning unit and a data processing unit; the platform monitoring center comprises a basic information management module, an alarm information processing module and an equipment running state monitoring unit; the data processing unit is respectively in data connection with the sensor unit, the positioning unit, the basic information management module, the alarm information processing module and the equipment running state monitoring unit. The data sensing and processing module is arranged on an angle valve hand wheel of the gas tank; the NB data acquisition module monitors the running state and the position change condition of each gas tank distributed in the retailer, a seller can monitor all the gas tanks in real time, manual regular inspection is avoided, the cost is saved, and the sales volume and the service quality of a product seller can be effectively improved by utilizing big data analysis.
Description
Technical Field
The invention belongs to the field of circuit monitoring, and relates to a low-cost safety monitoring system for a gas tank.
Background
Currently, there are three main disadvantages to the commercial gprs (catn) + GPS series of safety monitoring systems for gas tanks: 1. the loss rate is high and is more than 35 percent; 2. the power consumption is fast, and the battery is consumed in one month; 3. the positioning precision is poor and is more than 500 meters.
Disclosure of Invention
In view of the above, the present invention is directed to a safety monitoring system for a gas tank. In order to achieve the purpose, the invention provides the following technical scheme:
the gas tank safety monitoring system comprises a data sensing and processing module and a platform monitoring center which are connected with each other;
the data sensing and processing module comprises a sensor unit, a positioning unit and a data processing unit;
the platform monitoring center comprises a basic information management module, an alarm information processing module and an equipment running state monitoring unit;
the data processing unit is respectively in data connection with the sensor unit, the positioning unit, the basic information management module, the alarm information processing module and the equipment running state monitoring unit;
the data processing unit comprises an MCU and a power supply unit;
the basic information management module comprises a data statistical analysis module and an AI artificial intelligence algorithm module;
the data sensing and processing module is arranged on an angle valve hand wheel of the gas tank;
and the AI artificial intelligence algorithm module runs a gas tank residual gas amount algorithm and an illegal filling point algorithm.
Optionally, the sensor unit includes a temperature sensor, an acceleration sensor, a magnetic field sensor, a photosensor, and a travel switch.
Optionally, the positioning unit includes an NBIoT communication unit, a WiFi communication unit, and a bluetooth communication unit.
Optionally, the gas tank residual gas amount algorithm is as follows: when the data of the movement angle of 30 degrees is transmitted by the magnetic field sensor, the angle valve hand wheel of the gas tank is judged to be opened, gas is output, and the gas output duration is recorded to obtain the residual gas amount; reporting data when the residual gas amount is lower than 20% and 10%;
the illegal filling point algorithm is as follows: if more than 10 gas tanks exist, the opening time of the angle valve hand wheel at the same place exceeds 15 seconds within 5 days, and the opening time is lower than 300 seconds, and the place is not at a legal filling point, the place is considered to be an illegal filling point.
Optionally, the calculation method of the gas output duration is as follows: and t is G/G-k, wherein t is the output duration of the gas, G is the weight of the consumed gas in unit time, G is the total weight of the gas tank, and k is a gross weight parameter.
Optionally, the device operation state monitoring unit includes an alarm information comprehensive management unit and an alarm OA management unit.
Optionally, the data processing unit further comprises a buzzer, and the buzzer is in data connection with the alarm OA management unit.
Optionally, if the light-sensitive sensor senses that the brightness increment is more than 300 seconds within 5 seconds, it is determined that the data sensing and processing module is forcibly peeled off the angle valve handwheel, an alarm information is sent to the alarm OA management unit, and the buzzer is started.
Optionally, the power supply unit is a lithium sub-battery.
Optionally, the basic information management module further includes a maintenance module.
The invention has the beneficial effects that:
(1) the operation state and the position change condition of each gas cylinder distributed in the retailer are monitored through the NB data acquisition module, a seller can monitor all the gas cylinders in real time, manual regular inspection is avoided, the cost is saved, manual errors are avoided, the sales volume and the service quality of a manufacturer can be effectively improved by utilizing big data analysis, and therefore the overall operation benefit is greatly improved.
(2) The system realizes low power consumption, reliable transmission and increased density of data through NB-IOT + WiFi communication and positioning modes, and simultaneously uploads the position (less than ten meters), the use time and the temperature information of the gas tank in real time, thereby forming seamless connection between a terminal user and a gas station, reducing the loss rate of customers, improving the safety production level and the viscosity of the customers, and being a system for ensuring the income of gas safety administration departments, gas company gas stations and telecommunication companies.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a system diagram of the present invention;
FIG. 2 is a connection diagram of MCU and DCDC in the present invention;
fig. 3 is a circuit diagram of a WiFi positioning module in accordance with the present invention.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
As shown in fig. 1 to 3, the system for monitoring the safety of a gas tank includes a data sensing and processing module and a platform monitoring center which are connected with each other;
the data sensing and processing module comprises a sensor unit, a positioning unit and a data processing unit;
the platform monitoring center comprises a basic information management module, an alarm information processing module and an equipment running state monitoring unit;
the data processing unit is respectively in data connection with the sensor unit, the positioning unit, the basic information management module, the alarm information processing module and the equipment running state monitoring unit;
the data processing unit comprises an MCU and a power supply unit;
the basic information management module comprises a data statistical analysis module and an AI artificial intelligence algorithm module;
the data sensing and processing module is arranged on an angle valve hand wheel of the gas tank;
and the AI artificial intelligence algorithm module runs a gas tank residual gas amount algorithm and an illegal filling point algorithm.
Optionally, the sensor unit includes a temperature sensor, an acceleration sensor, a magnetic field sensor, a photosensor, and a travel switch.
Optionally, the positioning unit includes an NBIoT communication unit, a WiFi communication unit, and a bluetooth communication unit.
Optionally, the gas tank residual gas amount algorithm is as follows: when the data of the movement angle of 30 degrees is transmitted by the magnetic field sensor, the angle valve hand wheel of the gas tank is judged to be opened, gas is output, and the gas output duration is recorded to obtain the residual gas amount; reporting data when the residual gas amount is lower than 20% and 10%;
the illegal filling point algorithm is as follows: if more than 10 gas tanks exist, the opening time of the angle valve hand wheel at the same place exceeds 15 seconds within 5 days, and the opening time is lower than 300 seconds, and the place is not at a legal filling point, the place is considered to be an illegal filling point.
Optionally, the calculation method of the gas output duration is as follows: and t is G/G-k, wherein t is the output duration of the gas, G is the weight of the consumed gas in unit time, G is the total weight of the gas tank, and k is a gross weight parameter.
Optionally, the device operation state monitoring unit includes an alarm information comprehensive management unit and an alarm OA management unit.
Optionally, the data processing unit further comprises a buzzer, and the buzzer is in data connection with the alarm OA management unit.
Optionally, if the light-sensitive sensor senses that the brightness increment is more than 300 seconds within 5 seconds, it is determined that the data sensing and processing module is forcibly peeled off the angle valve handwheel, an alarm information is sent to the alarm OA management unit, and the buzzer is started.
Optionally, the power supply unit is a lithium sub-battery.
Optionally, the basic information management module further includes a maintenance module.
The parameters of the system are as follows:
positioning accuracy: within 10 m;
the monitoring mode is as follows: positioning/vibration/temperature/switch/light sensitive + travel switch, and combinational logic;
alarm information: <10 seconds;
positioning information: once every 24 hours (tunable);
a battery: 2200mAh lithium subcell;
working temperature: -20-65 ℃;
a housing: and (3) ABS material.
The MCU model is HS 6620;
the capacitor C120 in the DCDC is simultaneously connected to a pin 47 of the MCU; the capacitor C120 is grounded;
the capacitor C120 is respectively connected with the resistor R101 and the resistor R100 which are connected in series in parallel;
the resistor R100 is connected with the capacitor C101 in parallel and then connected with the inductor L100 in series;
the inductor L100 is connected to a switch control pin of a voltage source U100, and the capacitor C101 is connected to an output voltage feedback pin of the voltage source U100;
a data signal end of the voltage source U100 is connected with a capacitor C100 and a power supply monitoring input VBAT port, and the capacitor C100 is grounded;
the power supply cathode of the voltage source U100 is grounded;
an enable pin of the voltage source U100 is connected with an enable pin port of the DCDC;
a pin 23 of the MCU is connected with a control port of the impact force sensor through a control line SCL;
the pin 24 of the MCU is connected with the data port of the impact force sensor through a data line SDA;
a pin 42 of the MCU is connected to a transmitting end TX of the WiFi positioning module;
the pin 41 of the MCU is connected to the receiving terminal RX of the WiFi positioning module.
The capacitance C120 is 10 muF, and the voltage thereof is 6.3V.
The resistance R101 is 200k omega, and the resistance R100WEI 300k omega.
The capacitor C101 is 22pF and is a COG capacitor.
The capacitance C100 is 4.7 muF, and the voltage thereof is 16V.
The reset end of the WiFi positioning module is connected with a resistor R600;
and the WiFi positioning module is also connected with the input and output of an external crystal oscillator and an antenna.
The resistance R600 is 1k Ω.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (10)
1. Gas cylinder safety monitoring system, its characterized in that: the system comprises a data sensing and processing module and a platform monitoring center which are connected with each other;
the data sensing and processing module comprises a sensor unit, a positioning unit and a data processing unit;
the platform monitoring center comprises a basic information management module, an alarm information processing module and an equipment running state monitoring unit;
the data processing unit is respectively in data connection with the sensor unit, the positioning unit, the basic information management module, the alarm information processing module and the equipment running state monitoring unit;
the data processing unit comprises an MCU and a power supply unit;
the basic information management module comprises a data statistical analysis module and an AI artificial intelligence algorithm module;
the data sensing and processing module is arranged on an angle valve hand wheel of the gas tank;
and the AI artificial intelligence algorithm module runs a gas tank residual gas amount algorithm and an illegal filling point algorithm.
2. The gas tank safety monitoring system of claim 1, wherein: the sensor unit comprises a temperature sensor, an acceleration sensor, a magnetic field sensor, a photosensitive sensor and a travel switch.
3. The gas tank safety monitoring system of claim 2, wherein: the positioning unit comprises an NBIoT communication unit, a WiFi communication unit and a Bluetooth communication unit.
4. The gas tank safety monitoring system of claim 3, wherein: the gas tank residual gas quantity algorithm is as follows: when the data of the movement angle of 30 degrees is transmitted by the magnetic field sensor, the angle valve hand wheel of the gas tank is judged to be opened, gas is output, and the gas output duration is recorded to obtain the residual gas amount; reporting data when the residual gas amount is lower than 20% and 10%;
the illegal filling point algorithm is as follows: if more than 10 gas tanks exist, the opening time of the angle valve hand wheel at the same place exceeds 15 seconds within 5 days, and the opening time is lower than 300 seconds, and the place is not at a legal filling point, the place is considered to be an illegal filling point.
5. The gas tank safety monitoring system of claim 4, wherein: the method for calculating the coal gas output time comprises the following steps: and t is G/G-k, wherein t is the output duration of the gas, G is the weight of the consumed gas in unit time, G is the total weight of the gas tank, and k is a gross weight parameter.
6. The gas tank safety monitoring system of claim 1, wherein: the equipment running state monitoring unit comprises an alarm information comprehensive management unit and an alarm OA management unit.
7. The gas tank safety monitoring system of claim 6, wherein: the data processing unit further comprises a buzzer, and the buzzer is in data connection with the alarm OA management unit.
8. The gas tank safety monitoring system of claim 7, wherein: and when the photosensitive sensor senses that the brightness increment is more than 300 seconds within 5 seconds, the data sensing and processing module is judged to be forcibly stripped from the angle valve hand wheel, alarm information is sent to the alarm OA management unit, and the buzzer is started.
9. The gas tank safety monitoring system of claim 1, wherein: the power supply unit is a lithium sub-battery.
10. The gas tank safety monitoring system of claim 1, wherein: the basic information management module further comprises a maintenance module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110599850.8A CN113339700A (en) | 2021-05-31 | 2021-05-31 | Safety monitoring system for gas tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110599850.8A CN113339700A (en) | 2021-05-31 | 2021-05-31 | Safety monitoring system for gas tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113339700A true CN113339700A (en) | 2021-09-03 |
Family
ID=77472478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110599850.8A Pending CN113339700A (en) | 2021-05-31 | 2021-05-31 | Safety monitoring system for gas tank |
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| Country | Link |
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| CN (1) | CN113339700A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203232519U (en) * | 2013-04-29 | 2013-10-09 | 国家电网公司 | Antitheft system for distribution transformer |
| CN106052790A (en) * | 2016-06-23 | 2016-10-26 | 珠海格力电器股份有限公司 | Gas monitoring device and method and gas storage device |
| CN106439477A (en) * | 2016-08-31 | 2017-02-22 | 赵磊 | Gas tank management system |
| CN107965666A (en) * | 2017-10-21 | 2018-04-27 | 浙江天地人科技有限公司 | A kind of valve runner and gas tank |
| CN108040087A (en) * | 2017-11-24 | 2018-05-15 | 恒鸿达科技有限公司 | A kind of gas tank management system and method based on NB-IoT |
| CN108918775A (en) * | 2018-07-03 | 2018-11-30 | 武汉职业技术学院 | A kind of coal gas intelligent monitor system based on NB-IoT network |
| CN211124309U (en) * | 2020-02-20 | 2020-07-28 | 珠海鼎通科技有限公司 | Intelligent water meter |
| CN111536747A (en) * | 2020-04-21 | 2020-08-14 | 苏州调皮鱼电子科技有限公司 | Monitoring system of commercial refrigerator |
-
2021
- 2021-05-31 CN CN202110599850.8A patent/CN113339700A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203232519U (en) * | 2013-04-29 | 2013-10-09 | 国家电网公司 | Antitheft system for distribution transformer |
| CN106052790A (en) * | 2016-06-23 | 2016-10-26 | 珠海格力电器股份有限公司 | Gas monitoring device and method and gas storage device |
| CN106439477A (en) * | 2016-08-31 | 2017-02-22 | 赵磊 | Gas tank management system |
| CN107965666A (en) * | 2017-10-21 | 2018-04-27 | 浙江天地人科技有限公司 | A kind of valve runner and gas tank |
| CN108040087A (en) * | 2017-11-24 | 2018-05-15 | 恒鸿达科技有限公司 | A kind of gas tank management system and method based on NB-IoT |
| CN108918775A (en) * | 2018-07-03 | 2018-11-30 | 武汉职业技术学院 | A kind of coal gas intelligent monitor system based on NB-IoT network |
| CN211124309U (en) * | 2020-02-20 | 2020-07-28 | 珠海鼎通科技有限公司 | Intelligent water meter |
| CN111536747A (en) * | 2020-04-21 | 2020-08-14 | 苏州调皮鱼电子科技有限公司 | Monitoring system of commercial refrigerator |
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