CN102720948A - Device and system for monitoring liquefied petroleum gas steel cylinder - Google Patents
Device and system for monitoring liquefied petroleum gas steel cylinder Download PDFInfo
- Publication number
- CN102720948A CN102720948A CN2011104323304A CN201110432330A CN102720948A CN 102720948 A CN102720948 A CN 102720948A CN 2011104323304 A CN2011104323304 A CN 2011104323304A CN 201110432330 A CN201110432330 A CN 201110432330A CN 102720948 A CN102720948 A CN 102720948A
- Authority
- CN
- China
- Prior art keywords
- steel cylinder
- liquefied petroleum
- temperature
- links
- information
- 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.)
- Granted
Links
Images
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention provides a device and a system for monitoring a liquefied petroleum gas steel cylinder. The device comprises a power supply module for supplying power to the device, a first memory for storing identifying information of a liquefied petroleum gas steel cylinder, a temperature sensor for monitoring a surface temperature of the liquefied petroleum gas steel cylinder and generating a digital signal of temperature information, a first processor connected to the first memory and the temperature sensor and used for generating a first monitoring signal comprising temperature information and identifying information of the liquefied petroleum gas steel cylinder, and a first transmitter connected to the first processor and used for transmitting the first monitoring signal.
Description
Technical field
The present invention relates to the wireless sensor network field, relate in particular to a kind of device and system that monitors liquefied petroleum ga steel cylinder.
Background technique
LPG is widely used in the middle of the daily productive life as a kind of high efficient energy sources.In recent years, the accident of liquefied petroleum ga steel cylinder happens occasionally, and main cause has that steel cylinder is off quality, liquefied petroleum gas leakage, high-temperature baking, transit link accident, illegal air feed etc.
At present, to the safety problem of liquefied petroleum ga steel cylinder, mainly rely on user of service's self safety consciousness and manual inspection; Poor reliability; Extensive inspection need expend more manpower and materials, and efficient is low, real-time is poor, and the processing of can not in time reporting to the police has an accident.
Wireless sensor network is a kind of network of self-organization, has the characteristics such as flexible, that networking cost is low, data transmission security is reliable of disposing.Wireless sensor network technology combines sensor technology, embedded computing technique, distributed data processing and the communication technology; Gather the data of monitoring point through perception terminal; These data are sent out through wireless mode, and are sent to the service application platform with the network mode of organizing multi-hop certainly.Wireless sensor network technology is used for the real-time monitoring of liquefied petroleum ga steel cylinder, can remedies the deficiency of traditional manual detection.
The design of wireless sensor node is towards concrete application.To different applications and applied environment, the structure of wireless sensor node is also different.Have the sensor node that is used for monitoring harmful gases, industrial thermometric, natural gas line monitoring etc. at present, but also be directed against the sensor node that integrates identification, status monitoring and locating function of this special applications of liquefied petroleum ga steel cylinder.
Summary of the invention
The present invention provides a kind of device and system that monitors liquefied petroleum ga steel cylinder, and the technical problem that solve is the problem of the testing process poor reliability of liquefied petroleum ga steel cylinder in the existing technology.
For solving the problems of the technologies described above, the invention provides following technological scheme:
A kind of device of monitoring liquefied petroleum ga steel cylinder comprises:
Power module is used to said device power supply;
First memory is used to store the identifying information of liquefied petroleum ga steel cylinder;
Temperature transducer is used to monitor the surperficial temperature of said liquefied petroleum ga steel cylinder, generates the digital signal of temperature information;
First processor links to each other with said temperature transducer with said first memory, is used to generate the temperature information that comprises this liquefied petroleum ga steel cylinder and first monitor signal of identifying information;
First transmitter links to each other with said first processor, is used to send said first monitor signal.
Preferably, said device also has following characteristics: said device also comprises:
Second memory is used to store the threshold value of said liquefied petroleum ga steel cylinder surface temperature;
First comparator links to each other with said temperature transducer with said second memory, is used for the temperature information that said temperature transducer obtains and the threshold value of said temperature and compares, and obtains comparative result;
First alarm links to each other with said first comparator, is used for when being the temperature that obtains of said temperature transducer greater than the threshold value of said temperature, sending warning at said comparative result.
Preferably, said device also has following characteristics: said device also comprises:
Combustible gas sensor is used to monitor the said liquefied petroleum ga steel cylinder concentration of inflammable gas on every side, generates the analogue signal of concentration information;
Analogue-to-digital converters are used for the analog signal conversion of concentration information is become the digital signal of concentration information;
Second processor links to each other with said analogue-to-digital converters with said first memory, is used to generate the concentration information that comprises this liquefied petroleum ga steel cylinder and second monitor signal of identifying information;
Second transmitter links to each other with said second processor, is used to send said second monitor signal.
Preferably, said device also has following characteristics: said device also comprises:
Signal conditioning circuit links to each other with analogue-to-digital converters with said combustible gas sensor, is used for the analogue signal of concentration information is handled.
Preferably, said device also has following characteristics: said device also comprises:
The 3rd storage is used to store the said liquefied petroleum ga steel cylinder threshold value of combustable gas concentration on every side;
Second comparator links to each other with said analogue-to-digital converters with said the 3rd storage, is used for the concentration information that said combustible gas sensor obtains and the threshold value of said concentration and compares, and obtains comparative result;
Second alarm links to each other with said second comparator, is used for when being the concentration information that obtains of said combustible gas sensor greater than the threshold value of said concentration, sending warning at said comparative result.
A kind of system that monitors liquefied petroleum ga steel cylinder comprises:
Device mentioned above;
Gateway is used to receive first monitor signal and/or second monitor signal that device mentioned above sends;
Monitoring center links to each other with said gateway, is used for receiving said first monitor signal and/or second monitor signal from gateway.
7, system according to claim 6 is characterized in that, said system also comprises:
Relaying links to each other with said gateway with device mentioned above, is used to converge first monitor signal and/or second monitor signal that device mentioned above sends.
Compared with prior art, device that the embodiment of the invention provides and system can guarantee to obtain in real time the condition information of liquefied petroleum ga steel cylinder, for the safety control of liquefied petroleum ga steel cylinder provides the data support, have exempted manual inspection work, use manpower and material resources sparingly.
Description of drawings
The structural representation of the device of the monitoring liquefied petroleum ga steel cylinder that Fig. 1 provides for the embodiment of the invention one;
Fig. 2 is another structural representation of device shown in Figure 1;
Fig. 3 is another structural representation of device shown in Figure 2;
Fig. 4 is another structural representation of device shown in Figure 3;
The schematic representation of apparatus of the monitoring liquefied petroleum ga steel cylinder that Fig. 5 provides for application implementation example of the present invention.
Embodiment
For making the object of the invention, technological scheme and advantage clearer, will combine accompanying drawing and specific embodiment that the present invention is made further detailed description below.Need to prove that under the situation of not conflicting, embodiment among the application and the characteristic among the embodiment be combination in any each other.
Embodiment one
The structural representation of the device of the monitoring liquefied petroleum ga steel cylinder that Fig. 1 provides for the embodiment of the invention one.Device shown in Figure 1 comprises:
Temperature transducer 103 is used to monitor the surperficial temperature of said liquefied petroleum ga steel cylinder, generates the digital signal of temperature information;
The device that embodiment one provides; Through the temperature sensor monitors temperature; And generate first monitor signal of the identifying information comprise this liquefied petroleum ga steel cylinder by first processor; Thereby guarantee to obtain in real time the temperature on liquefied petroleum ga steel cylinder surface, for the safety control of liquefied petroleum ga steel cylinder provides the data support.
Embodiment two
Fig. 2 is another structural representation of device shown in Figure 1.Different with device shown in Figure 1 is that device shown in Figure 2 also comprises:
First comparator 202 links to each other with said temperature transducer 103 with said second memory 201, is used for the temperature information that said temperature transducer obtains and the threshold value of said temperature and compares, and obtains comparative result;
First alarm 203 links to each other with said first comparator 202, is used for when being the temperature that obtains of said temperature transducer greater than the threshold value of said temperature, sending warning at said comparative result.
Different with embodiment one is; The device that embodiment two provides through Current Temperatures and temperature threshold are compared, can draw the information whether the steel cylinder temperature exists potential safety hazard; When there is potential safety hazard in judgement; Through sending warning, person easy to use in time finds and handles, improved the Security in the using process.
Embodiment three
Fig. 3 is another structural representation of device shown in Figure 2.Part identical with Fig. 2 in the device shown in Figure 3 is not shown in Fig. 3, and device wherein shown in Figure 3 also comprises:
Combustible gas sensor 301 is used to monitor the said liquefied petroleum ga steel cylinder concentration of inflammable gas on every side, generates the analogue signal of concentration information;
Analogue-to-digital converters 302 are used for the analog signal conversion of concentration information is become the digital signal of concentration information;
Second processor 303 links to each other with said analogue-to-digital converters 302 with said first memory 102, is used to generate the concentration information that comprises this liquefied petroleum ga steel cylinder and second monitor signal of identifying information;
In the present embodiment, preferred, said device also comprises:
Signal conditioning circuit links to each other with analogue-to-digital converters with said combustible gas sensor, is used for the analogue signal of concentration information is handled.
Specifically, be used for processing such as signal to combustible gas sensor output amplifies, isolation, filtering, thereby improve the degree of accuracy and the intensity of system.
The device that embodiment three provides; Concentration through combustible gas sensor monitoring LPG; And generate second monitor signal of the identifying information comprise this liquefied petroleum ga steel cylinder by second processor; Thereby guarantee to obtain in real time the concentration of inflammable gas around the liquefied petroleum ga steel cylinder, for the safety control of liquefied petroleum ga steel cylinder provides the data support.
Embodiment four
Fig. 4 is another structural representation of device shown in Figure 3.Different with embodiment three is that device shown in Figure 4 also comprises:
The 3rd storage 401 is used to store the said liquefied petroleum ga steel cylinder threshold value of combustable gas concentration on every side;
Second comparator 402 links to each other with said analogue-to-digital converters 302 with said the 3rd storage 401, is used for the concentration information that said combustible gas sensor obtains and the threshold value of said concentration and compares, and obtains comparative result;
Second alarm 403 links to each other with said second comparator 402, is used for when being the concentration information that obtains of said combustible gas sensor greater than the threshold value of said concentration, sending warning at said comparative result.
Different with embodiment three is; The device that embodiment four provides through current concentration and concentration threshold are compared, can draw the information whether steel cylinder concentration exists potential safety hazard; When there is potential safety hazard in judgement; Through sending warning, person easy to use in time finds and handles, improved the Security in the using process.
Embodiment five
Present embodiment provides a kind of system that monitors liquefied petroleum ga steel cylinder, and wherein said system comprises:
Like embodiment's one to four arbitrary described device;
Gateway is used to receive first monitor signal and/or second monitor signal that this device sends;
Monitoring center links to each other with said gateway, is used for receiving said first monitor signal and/or second monitor signal from gateway.
Preferably, for to increase the area coverage of network, increase the quantity of node in the network, said system also comprises:
Relaying links to each other with said gateway with said device, is used to converge first monitor signal and/or second monitor signal that said device sends.
The situation of steel cylinder information through setting up this system, can macroscopic view be understood by the system that embodiment five provides, and realizes monitoring in real time, reports to the police automatically and Monitoring Data is uploaded, and is safe and reliable, exempted manual inspection work, uses manpower and material resources sparingly.
With an application example device in the foregoing description and system are described below, specific as follows:
The schematic representation of apparatus of the monitoring liquefied petroleum ga steel cylinder that Fig. 5 provides for application implementation example of the present invention, device shown in Figure 5 comprise sensor assembly, signal condition module, microprocessor module, wireless communication module, alarm module, power module.Wherein:
Sensor assembly comprises combustible gas sensor and temperature transducer, is used to monitor combustable gas concentration and steel cylinder surface temperature.Wherein, combustible gas sensor is converted into electrical signal output with combustable gas concentration, after the analog signal conditioner resume module, inserts microprocessor, through the A/D conversion, is translated into digital signal and send and give microprocessor processes; Temperature sensor module is converted into digital signal with steel cylinder surface temperature information and send and give microprocessor.
The signal condition module is used for processing such as signal to combustible gas sensor output amplifies, isolation, filtering.
Microprocessor module comprises non-volatile memory module, is used to store the identity information (comprising production firm, date of manufacture, annual test date) of embedded software program, steel cylinder etc., and is write by liquefied petroleum ga steel cylinder procuratorial organs.After procuratorial organs' check steel cylinder is up-to-standard, for steel cylinder is installed this wireless sensor node, and with production firm, date of manufacture write non-volatile memory module.Steel cylinder procuratorial organs regularly to steel cylinder regularly detect qualified after, write the up-to-date detection date.In addition, if find, when exceeding setting threshold explosion risk is arranged, will trigger alarm and carry out acoustooptic alarm because of combustable gas concentration or steel cylinder temperature through microprocessor analysis.
Power module is that whole device provides power supply.
Alarm module is used to produce the acoustooptic alarm signal.Wireless communication module can be given relaying or gateway node with the data upload from microprocessor, and can receive the descending Query Information from relaying or gateway node, it is sent give microprocessor processes.
In addition, relaying in the said system or gateway node are installed on sub-district building, steel cylinder fueling station and transportation arterial highway.When steel cylinder by the user be in use, fill, when transporting, wireless sensor node and relaying, gateway node are formed sensor network, realize data interaction, and can position wireless sensor node.Gateway node regularly issues the steel cylinder Query Information.Wireless communication module sends to microprocessor processes after receiving the Query Information that issues, and then, microprocessor will read the identity information of the steel cylinder in the storage, send to give wireless communication module and upload, and through relaying, gateway node, finally send and gives Surveillance center.
In sum; Through gateway issue the steel cylinder Query Information, wireless sensor node is uploaded the steel cylinder identity information, can realize the automatic inquiry of steel cylinder information, and can detect combustable gas concentration and steel cylinder surface temperature information automatically; Realization is monitored in real time, reports to the police automatically and Monitoring Data is uploaded; Safe and reliable, exempted manual inspection work, use manpower and material resources sparingly; The present invention can realize the location to steel cylinder.When danger took place, wireless sensor node can be reported to the police automatically on the one hand, reminded the spot personnel in time to handle; On the other hand, real time data and the locating information of Surveillance center through monitoring can be located accident location fast, realizes speedily carrying out rescue work fast.
The above; Be merely embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technician who is familiar with the present technique field is in the technical scope that the present invention discloses; Can expect easily changing or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the described protection domain of claim.
Claims (7)
1. a device of monitoring liquefied petroleum ga steel cylinder is characterized in that, comprising:
Power module is used to said device power supply;
First memory is used to store the identifying information of liquefied petroleum ga steel cylinder;
Temperature transducer is used to monitor the surperficial temperature of said liquefied petroleum ga steel cylinder, generates the digital signal of temperature information;
First processor links to each other with said temperature transducer with said first memory, is used to generate the temperature information that comprises this liquefied petroleum ga steel cylinder and first monitor signal of identifying information;
First transmitter links to each other with said first processor, is used to send said first monitor signal.
2. device according to claim 1 is characterized in that, said device also comprises:
Second memory is used to store the threshold value of said liquefied petroleum ga steel cylinder surface temperature;
First comparator links to each other with said temperature transducer with said second memory, is used for the temperature information that said temperature transducer obtains and the threshold value of said temperature and compares, and obtains comparative result;
First alarm links to each other with said first comparator, is used for when being the temperature that obtains of said temperature transducer greater than the threshold value of said temperature, sending warning at said comparative result.
3. device according to claim 2 is characterized in that, said device also comprises:
Combustible gas sensor is used to monitor the said liquefied petroleum ga steel cylinder concentration of inflammable gas on every side, generates the analogue signal of concentration information;
Analogue-to-digital converters are used for the analog signal conversion of concentration information is become the digital signal of concentration information;
Second processor links to each other with said analogue-to-digital converters with said first memory, is used to generate the concentration information that comprises this liquefied petroleum ga steel cylinder and second monitor signal of identifying information;
Second transmitter links to each other with said second processor, is used to send said second monitor signal.
4. device according to claim 3 is characterized in that, said device also comprises:
Signal conditioning circuit links to each other with analogue-to-digital converters with said combustible gas sensor, is used for the analogue signal of concentration information is handled.
5. device according to claim 3 is characterized in that, said device also comprises:
The 3rd storage is used to store the said liquefied petroleum ga steel cylinder threshold value of combustable gas concentration on every side;
Second comparator links to each other with said analogue-to-digital converters with said the 3rd storage, is used for the concentration information that said combustible gas sensor obtains and the threshold value of said concentration and compares, and obtains comparative result;
Second alarm links to each other with said second comparator, is used for when being the concentration information that obtains of said combustible gas sensor greater than the threshold value of said concentration, sending warning at said comparative result.
6. a system that monitors liquefied petroleum ga steel cylinder is characterized in that, comprising:
Like the arbitrary described device of claim 1 to 5;
Gateway is used to receive first monitor signal and/or second monitor signal that sends like the arbitrary described device of claim 1 to 5;
Monitoring center links to each other with said gateway, is used for receiving said first monitor signal and/or second monitor signal from gateway.
7. system according to claim 6 is characterized in that, said system also comprises:
Relaying links to each other with said gateway like the arbitrary described device of claim 1 to 5 with said, is used to converge first monitor signal and/or second monitor signal that sends like the arbitrary described device of claim 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110432330.4A CN102720948B (en) | 2011-12-21 | 2011-12-21 | Device and system for monitoring liquefied petroleum gas steel cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110432330.4A CN102720948B (en) | 2011-12-21 | 2011-12-21 | Device and system for monitoring liquefied petroleum gas steel cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102720948A true CN102720948A (en) | 2012-10-10 |
| CN102720948B CN102720948B (en) | 2014-12-10 |
Family
ID=46946781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110432330.4A Active CN102720948B (en) | 2011-12-21 | 2011-12-21 | Device and system for monitoring liquefied petroleum gas steel cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102720948B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206614A (en) * | 2013-04-01 | 2013-07-17 | 中山大学 | Early-warning device and early-warning method used for monitoring accidents of boiling liquid expanding vapor explosion (BLEVE) of pressuring-bearing storage tanks |
| CN105025060A (en) * | 2014-04-29 | 2015-11-04 | 宁夏众诚科创信息科技有限公司 | Mobile data monitoring system based on wireless sensor network |
| CN106053243A (en) * | 2016-06-06 | 2016-10-26 | 天津市长龙宏业燃气设备有限公司 | Intelligent rotating plate type quick hydrostatic test line for liquefied petroleum gas cylinders |
| CN112413402A (en) * | 2020-09-24 | 2021-02-26 | 扬州高得宝瓦斯器材制造有限公司 | Steel welding gas cylinder safety prevention and control induction system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5448220A (en) * | 1993-04-08 | 1995-09-05 | Levy; Raymond H. | Apparatus for transmitting contents information |
| JP2006079442A (en) * | 2004-09-10 | 2006-03-23 | Mitsubishi Electric Corp | Wireless data collection system |
| CN101232417A (en) * | 2007-01-25 | 2008-07-30 | 上海研祥智能科技有限公司 | Embedded type wireless sensing network intelligent platform |
| CN201270523Y (en) * | 2008-08-25 | 2009-07-08 | 北京时代凌宇科技有限公司 | Wireless sensor network |
| CN101555991A (en) * | 2009-05-21 | 2009-10-14 | 北京航空航天大学 | Wireless sensor network node device of safety monitoring of natural gas pipe network |
| CN101622651A (en) * | 2007-03-09 | 2010-01-06 | 现代重工业株式会社 | Method of detecting gas in gas leakage risk area around gas storage system |
| CN201607804U (en) * | 2009-09-28 | 2010-10-13 | 河南省电力公司驻马店供电公司 | SF6 gas concentration online monitoring and alarming system based on sensor network technology |
-
2011
- 2011-12-21 CN CN201110432330.4A patent/CN102720948B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5448220A (en) * | 1993-04-08 | 1995-09-05 | Levy; Raymond H. | Apparatus for transmitting contents information |
| JP2006079442A (en) * | 2004-09-10 | 2006-03-23 | Mitsubishi Electric Corp | Wireless data collection system |
| CN101232417A (en) * | 2007-01-25 | 2008-07-30 | 上海研祥智能科技有限公司 | Embedded type wireless sensing network intelligent platform |
| CN101622651A (en) * | 2007-03-09 | 2010-01-06 | 现代重工业株式会社 | Method of detecting gas in gas leakage risk area around gas storage system |
| CN201270523Y (en) * | 2008-08-25 | 2009-07-08 | 北京时代凌宇科技有限公司 | Wireless sensor network |
| CN101555991A (en) * | 2009-05-21 | 2009-10-14 | 北京航空航天大学 | Wireless sensor network node device of safety monitoring of natural gas pipe network |
| CN201607804U (en) * | 2009-09-28 | 2010-10-13 | 河南省电力公司驻马店供电公司 | SF6 gas concentration online monitoring and alarming system based on sensor network technology |
Non-Patent Citations (2)
| Title |
|---|
| 《2007中国（第二届北京）国际RFID技术高峰论坛会论文集》 20070930 苏州市计算机学会RFID应用专业委员会 "苏州市基于电子标签的危险化学品气瓶安全监管系统建设可行性研究报告" 第6页第11-21行 1-7 , * |
| 苏州市计算机学会RFID应用专业委员会: ""苏州市基于电子标签的危险化学品气瓶安全监管系统建设可行性研究报告"", 《2007中国（第二届北京）国际RFID技术高峰论坛会论文集》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206614A (en) * | 2013-04-01 | 2013-07-17 | 中山大学 | Early-warning device and early-warning method used for monitoring accidents of boiling liquid expanding vapor explosion (BLEVE) of pressuring-bearing storage tanks |
| CN105025060A (en) * | 2014-04-29 | 2015-11-04 | 宁夏众诚科创信息科技有限公司 | Mobile data monitoring system based on wireless sensor network |
| CN106053243A (en) * | 2016-06-06 | 2016-10-26 | 天津市长龙宏业燃气设备有限公司 | Intelligent rotating plate type quick hydrostatic test line for liquefied petroleum gas cylinders |
| CN106053243B (en) * | 2016-06-06 | 2019-04-05 | 天津市长龙宏业燃气设备有限公司 | The intelligent quick detection line of the rotating disc type liquefied petroleum gas steel cylinder water pressure test |
| CN112413402A (en) * | 2020-09-24 | 2021-02-26 | 扬州高得宝瓦斯器材制造有限公司 | Steel welding gas cylinder safety prevention and control induction system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102720948B (en) | 2014-12-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101712563B1 (en) | Safety supervision system for facilities and safety supervision method thereof | |
| KR101859070B1 (en) | Safety supervision system for large scale facilities and safety supervision method thereof | |
| CN108332064B (en) | Natural gas monitoring management system | |
| CN103246256A (en) | Field production safety monitoring system for building construction and application method thereof | |
| CN103065438A (en) | Gas alarm system with wireless communication function | |
| CN205140166U (en) | Combustible gas multiple spot system of observing and controling based on wireless sensor network | |
| CN205750464U (en) | A kind of wireless remote control system of frozen products insulated container | |
| CN106056859A (en) | Gas detection alarm | |
| CN203232543U (en) | A production safety monitoring system at a construction site | |
| CN209591048U (en) | A kind of Electrical Safety dynamic monitoring system with gas leakage alarm | |
| CN102720948A (en) | Device and system for monitoring liquefied petroleum gas steel cylinder | |
| CN108167651A (en) | A kind of gas monitoring device | |
| CN106287225A (en) | A kind of combustion gas on-line monitoring early warning system and detection control method thereof | |
| CN205264004U (en) | Nearly electric early warning device of high -voltage line | |
| CN105245862A (en) | Substation environment safety monitoring system | |
| CN113570829B (en) | Wireless gas detection alarm system | |
| CN205103963U (en) | Intelligence hazardous articles disaster alarm device | |
| CN104574846A (en) | Gas detection, alarming and exhaust system | |
| CN202381986U (en) | Sensor node and system for managing liquid petrol gas (LPG) steel cylinder | |
| CN201517950U (en) | Temperature wireless monitoring system of high voltage device of transformer station | |
| CN105094097A (en) | Factory hazard source real-time monitoring control system and control method based on Internet of things | |
| CN206097405U (en) | Gas detection alarm | |
| CN113765994A (en) | Intelligent fire-fighting equipment monitoring system and monitoring method thereof | |
| CN102184620A (en) | Gas detection alarm and exhaust system | |
| CN202075840U (en) | Coal gas detection, alarm and exhaust system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BEIJING TIMELOIT TECHNOLOGY CO., LTD. Free format text: FORMER NAME: BEIJING LOIT TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 100096 Beijing City, Haidian District Xisanqi building materials City Road No. 18 building 4 layer Bestpower Patentee after: Beijing times Polytron Technologies Inc Address before: 100096 Beijing City, Haidian District Xisanqi building materials City Road No. 18 building 4 layer Bestpower Patentee before: Beijing LOIT Technology Co., Ltd. |