CN106402641A - Trap leakage monitoring system and method - Google Patents

Trap leakage monitoring system and method Download PDF

Info

Publication number
CN106402641A
CN106402641A CN201610993295.6A CN201610993295A CN106402641A CN 106402641 A CN106402641 A CN 106402641A CN 201610993295 A CN201610993295 A CN 201610993295A CN 106402641 A CN106402641 A CN 106402641A
Authority
CN
China
Prior art keywords
trap
gas
wireless signal
monitoring device
gas pipeline
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
Application number
CN201610993295.6A
Other languages
Chinese (zh)
Other versions
CN106402641B (en
Inventor
洪桥发
洪好花
孙俊玲
洪有万
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Drainage Valve Factory
Original Assignee
Beijing Drainage Valve Factory
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Beijing Drainage Valve Factory filed Critical Beijing Drainage Valve Factory
Priority to CN201610993295.6A priority Critical patent/CN106402641B/en
Publication of CN106402641A publication Critical patent/CN106402641A/en
Application granted granted Critical
Publication of CN106402641B publication Critical patent/CN106402641B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16TSTEAM TRAPS OR LIKE APPARATUS FOR DRAINING-OFF LIQUIDS FROM ENCLOSURES PREDOMINANTLY CONTAINING GASES OR VAPOURS
    • F16T1/00Steam traps or like apparatus for draining-off liquids from enclosures predominantly containing gases or vapours, e.g. gas lines, steam lines, containers
    • F16T1/38Component parts; Accessories
    • F16T1/48Monitoring arrangements for inspecting, e.g. flow of steam and steam condensate

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Pipeline Systems (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

The invention discloses a trap leakage monitoring system and method. The system comprises a gas transmission pipeline and a trap monitoring device arranged on the gas transmission pipeline; the trap monitoring device comprises a trap mounted on the gas transmission pipeline; the system is characterized in that the trap monitoring device further comprising ultrasonic sensors and a wireless signal transmission device; the ultrasonic sensors surround the trap and are connected with the wireless signal transmission device; and a remote control server arranged at a service station is connected with the wireless signal transmission device to receive and process ultrasonic signals of the ultrasonic sensors. With the system and the method, the trap in the gas transmission pipeline is monitored in real time, and specific solutions can be obtained through immediate output once leakage occurs; and multiple traps can be monitored simultaneously, problems can be found rapidly and accurately, leakage points can be announced, the failure processing speed is increased, and the labor intensity of manual patrolling is reduced.

Description

A kind of trap leaking monitoring system and its method
Technical field
The invention belongs to monitoring of tools, particularly to a kind of trap leaking monitoring system and its method.
Background technology
Drain valve is widely used on various steam or gas pipeline, but the monitoring for drain valve is current also all It is by the way of personnel make an inspection tour, be often just found when big leakage in drain valve, and for some little leakages Cannot be found, this phenomenon is especially prominent for high, medium and low voltage steam or feed channel, often appear in the leakage in school In the state of not being found, big leakage is slowly caused to have a strong impact on production and the wasting of resources.
Content of the invention
It is an object of the invention to provide a kind of trap leaking monitoring system and its method, can be sent out according to trap leaking Go out ultrasonic wave, the feature of the different leakage situation of different supersonic ranges reflection, drain valve is provided with ultrasonic sensor, leads to Cross the signal of the controller reception sensor in control room setting, and the different supersonic ranges letters by arranging in the controller Number, and the corresponding solution of dissimilar drain valve, the working condition of dynamic monitor in real time drain valve, and for appearance Problem exports correct solution.
To achieve these goals, the technical scheme is that:
A kind of trap leaking monitoring system, the trap monitoring device arranging including gas pipeline and on gas pipeline, institute State the gas pipeline that gas pipeline is including conveying steam, described trap monitoring device includes drain valve, described drain valve It is arranged on gas pipeline, wherein, described trap monitoring device also includes ultrasonic sensor and wireless signal dispensing device, Ultrasonic sensor is arranged around drain valve, and described ultrasonic sensor connects wireless signal dispensing device, and one is arranged on clothes The remote control service device at business station is connected the ultrasonic signal of reception processing ultrasonic sensor with wireless signal dispensing device.
Scheme is further:In described trap monitoring device, the gas pipeline before or after described drain valve also sets respectively Be equipped with gas temperature sensor and gas pressure sensor, the signal of gas temperature sensor and gas pressure sensor connect to Described wireless signal dispensing device.
Scheme is further:One bypass backflow is provided with described trap monitoring device on described gas pipeline Pipe, is provided with one on bypass return duct and drives the accumulation electrical source generating electricity, described accumulation of energy electricity by the fluid in bypass return duct Source provides power supply for described wireless signal dispensing device.
Scheme is further:It is provided with the gas pipeline before or after described drain valve in described trap monitoring device Sight glass, sight glass is used for estimating the gas in gas pipeline, on the gas pipeline at described trap monitoring device two ends respectively It is provided with cut-off control valve.
Scheme is further:Described control server be connected with wireless signal dispensing device by relay station, relay station and Wireless signal dispensing device wirelessly connects.
Scheme is further:Described trap monitoring device has multiple, described relay station wirelessly connection multiple drain valves prison Wireless signal dispensing device in control device.
Scheme is further:Described relay station passes through cordless communication network or internet is connected with remote control service device.
A kind of monitoring method based on trap leaking monitoring system, described trap leaking monitoring system includes appendix Road and the trap monitoring device arranging on gas pipeline, described trap monitoring device includes drain valve, described hydrophobic Valve is arranged on gas pipeline, and described trap monitoring device also includes ultrasonic sensor and wireless signal dispensing device, surpasses Sonic sensor is arranged around drain valve, and the signal of described ultrasonic sensor connects to described wireless signal dispensing device, and one The individual remote control service device being arranged on service station is connected with wireless signal dispensing device, in described remote control service device Making is provided with:For the leak condition table of different supersonic band change corresponding difference leakage class, for dissimilar The solution matrix of the different solutions that the different leakage class of valve are formulated, and drain valve in trap monitoring device Type;It is characterized in that, described monitoring method is:
A., when ultrasonic signal in the ultrasonic signal of Real-time Collection ultrasonic sensor;
B. analysis obtains the ghz area of ultrasonic signal;
C. from leak condition table, leakage class is obtained according to ghz area;
D. from solution matrix, solution output is gone out according to the type search of leakage class and drain valve.
Scheme is further:In described trap monitoring device, the gas pipeline before or after described drain valve also sets respectively It is equipped with gas temperature sensor and gas pressure sensor, the signal of described gas temperature sensor and gas pressure sensor is even It is connected to described wireless signal dispensing device, described leak condition table is for different supersonic band, change value of pressure, temperature The leak condition table of changing value corresponding difference leakage class;Methods described further includes:
Gas temperature sensor and the gas pressure on gas pipeline in trap monitoring device is received under No leakage working condition Force sensor signals, record storage gas temperature angle value gentle body pressure value;
When ultrasonic signal occurs, also gather gas temperature sensor and gas pressure sensor signal value further, and Collection gas temperature sensor and gas pressure sensor signal value are compared with the value under No leakage working condition;
The described leakage class that obtains is according to ghz area and the changing value that compares obtains from leak condition table.
Scheme is further:Described relay station passes through cordless communication network or internet is connected with remote control service device.
The invention has the beneficial effects as follows:Present invention achieves in gas pipeline drain valve monitor in real time, and accomplish Obtain specific solution once occurring leaking just can exporting at once, multiple drain valves can be monitored simultaneously, can be quick Pinpointing the problems exactly, informs leakage point, improves the speed of handling failure, reduces the labour intensity of manual patrol.
With reference to the accompanying drawings and examples the present invention is described in detail.
Brief description
Fig. 1 is present system structural representation;
Fig. 2 carries power supply and the system structure diagram of other sensor for the present invention;
Fig. 3 is circuit logic diagram of the present invention;
Fig. 4 comprises the structured flowchart of multiple trap monitoring devices for present system.
Specific embodiment
Because it is found that:In basic, normal, high pressure gas transmission(Containing steam)In pipeline, for example pressure is more than the appendix of 0.05MPa Road, in gas leakage, what leakage point sent is the ultrasonic wave sound that people can not hear to the drain valve installed in pipeline, and with letting out Leakage its ultrasonic frequency of sending of size also changes therewith, has a kind of following trap leaking monitoring systems based on this characteristic System and its method.
Embodiment 1:
A kind of trap leaking monitoring system is it is adaptable to pressure is more than the conveying steam of 0.05MPa or the pipeline of gas, such as Fig. 1 Shown, described system includes gas pipeline 1 and the trap monitoring device 2 arranging on gas pipeline, and described gas pipeline is Refer to include the pipeline of jet chimney and other gas(Such as liquefied gas, natural gas, coal gas etc.), for the ease of installing and dimension Shield, is respectively arranged with cut-off control valve 3, described trap monitoring on the gas pipeline at described trap monitoring device two ends Device includes drain valve 201, and described drain valve is arranged on gas pipeline, and wherein, described trap monitoring device also includes Ultrasonic sensor 202 and wireless signal dispensing device 203, ultrasonic sensor 202 and wireless signal dispensing device pass through to prop up Frame 4 is arranged on drain valve side, and ultrasonic sensor can be one or more, and ultrasonic sensor is arranged on around drain valve The input interface of drain valve and gas pipeline 1 and output interface side, described ultrasonic sensor connects wireless signal dispensing device, It is provided with signal receiver and signal data conversion processor in wireless signal dispensing device, and transmitting chip, signal data The ultrasonic wave analog signal of reception is converted to and is sent by transmitting chip after numeral by conversion processor.One is arranged on service station Remote control service device 5 be connected the ultrasonic signal of reception processing ultrasonic sensor with wireless signal dispensing device.
Wherein:Remote control service device can directly be connected by wireless network with the connection of wireless signal dispensing device, For example:4G communication interface element is set in wireless signal dispensing device, wireless signal dispensing device pass through 4G network with long-range Server is controlled to connect, remote control service device can connect multiple trap monitoring devices 2.
Or, wireless signal dispensing device is passed through relay station and is connected with described control server, relay station and wirelessly Sender unit wirelessly connects;Adopt the structure, as shown in figure 4, trap monitoring device described in the system have multiple When, multiple trap monitoring device subregions can be arranged a relay station in each area, many in relay station Xian Yu area Individual trap monitoring device connects, and then relay station is connected with described control server again.So, there aring multiple trap monitorings During device 2, the early stage of some signals processes and can be processed in relay station, such as round scanning, once have leakage again with clothes Business device connects, and so can reduce the signal transacting amount controlling server, improves processing speed.
In order to improve the accuracy of judgement in embodiment, as shown in Figures 2 and 3, in institute in described trap monitoring device State the gas pipeline before or after drain valve and be additionally provided with gas temperature sensor 204 and gas pressure sensor 205, gas respectively The signal of temperature sensor and gas pressure sensor connects to described wireless signal dispensing device.Or at gas pipeline two ends It is respectively arranged with gas temperature sensor and gas pressure sensor;And set on the gas pipeline before or after described drain valve It is equipped with sight glass 206, sight glass is used for estimating the gas in gas pipeline.
In order to trap monitoring device can be used battery as power supply, but occurred using battery and need personnel to make an inspection tour more Change inconvenience, in order to stay out of long-term work:Solar cell can be adopted, but installation environment will be required, also not It is preferred plan, the preferred version that the present embodiment adopts is using the fluid power-generation in pipeline, that is,:Described trap monitoring In device, on described gas pipeline, drain valve import front end is provided with a bypass return duct 207, sets on bypass return duct Be equipped with one by bypass return duct in fluid drive generate electricity accumulation electrical source 208, described fluid include gas or liquid or Gas and liquid, described accumulation electrical source provides power supply for described wireless signal dispensing device, and the method will not consume in pipeline Fluid;Wherein:Accumulation electrical source 208 should include air motor or the gear motor that surges, air motor or gear horse of surging The power source reaching is gas and gas liquid mixture in gas pipeline, and air motor or the gear motor that surges drive one to send out Motor, the output of generator connects a battery, and battery is output as described wireless signal dispensing device and provides power supply.
For visual observations, it is provided with the gas pipeline before or after described drain valve in described trap monitoring device Sight glass, sight glass is used for estimating interior gas or the liquid in gas pipeline, and certainly, sight glass should have high temperature resistant, high pressure.
In embodiment:Described relay station passes through cordless communication network or internet is connected with remote control service device, wherein: Cordless communication network is 4G cordless communication network, or WIFI network, using independent communication protocol;Internet is by having The internet that line connects, or the internet being connected by router.
Embodiment 2:
A kind of monitoring method based on embodiment 1 trap leaking monitoring system, the content of embodiment 1 also should be considered this enforcement The content of example, therefore, sees figures.1.and.2, described trap leaking monitoring system includes gas pipeline and sets on gas pipeline The trap monitoring device put, described trap monitoring device includes drain valve, and described drain valve is arranged on gas pipeline, Described trap monitoring device also includes ultrasonic sensor and wireless signal dispensing device, and ultrasonic sensor is around drain valve Setting, the signal of described ultrasonic sensor connects to described wireless signal dispensing device, and one is arranged on the long-range of service station Control server to be connected with wireless signal dispensing device, make in described remote control service device and be provided with:For difference The leak condition table of supersonic band change corresponding difference leakage class, for dissimilar valve different leakage class systems The solution matrix of fixed different solutions, and in trap monitoring device drain valve type;Wherein, described monitoring side Method is:
A., when ultrasonic signal in the ultrasonic signal of Real-time Collection ultrasonic sensor;
B. analysis obtains the ghz area of ultrasonic signal;
C. from leak condition table, leakage class is obtained according to ghz area;
D. from solution matrix, solution output is gone out according to the type search of leakage class and drain valve.
As further preferred embodiment:Appendix before or after described drain valve in described trap monitoring device Road is additionally provided with gas temperature sensor and gas pressure sensor respectively, the gentle pressure sensing body of described gas temperature sensor The signal of device connects to described wireless signal dispensing device, and described leak condition table is for different supersonic band, pressure The leak condition table of changing value, temperature change value corresponding difference leakage class;Methods described further includes:
Gas temperature sensor and the gas pressure on gas pipeline in trap monitoring device is received under No leakage working condition Force sensor signals, record storage gas temperature angle value gentle body pressure value;
When ultrasonic signal occurs, also gather gas temperature sensor and gas pressure sensor signal value further, and Collection gas temperature sensor and gas pressure sensor signal value are compared with the value under No leakage working condition;
The described leakage class that obtains is according to ghz area and the changing value that compares obtains from leak condition table.
In square embodiment:Described relay station passes through cordless communication network or internet is connected with remote control service device, its In:Cordless communication network is 4G cordless communication network, or WIFI network, using independent communication protocol;Internet is logical Cross the internet of wired connection, or the internet connecting by router.
Certainly methods described also includes:When ultrasonic signal occurs, send alarm signal, alarm signal can be sound Alarm signal is it is also possible to the mode of note is sent to the mobile phone of nominator by communication network.

Claims (10)

1. a kind of trap leaking monitoring system, the trap monitoring device arranging including gas pipeline and on gas pipeline, Described gas pipeline is the gas pipeline including conveying steam, and described trap monitoring device includes drain valve, described hydrophobic Valve is arranged on gas pipeline it is characterised in that described trap monitoring device also includes ultrasonic sensor and wireless signal Dispensing device, ultrasonic sensor is arranged around drain valve, described ultrasonic sensor connection wireless signal dispensing device, one The remote control service device being arranged on service station is connected the ultrasonic of reception processing ultrasonic sensor with wireless signal dispensing device Ripple signal.
2. system according to claim 1 it is characterised in that in described trap monitoring device before described drain valve or Gas pipeline afterwards is additionally provided with gas temperature sensor and gas pressure sensor, gas temperature sensor and gas pressure respectively The signal of force snesor connects to described wireless signal dispensing device.
3. system according to claim 1 and 2 is it is characterised in that in described appendix in described trap monitoring device One bypass return duct is provided with road, bypass return duct is provided with one generating is driven by the fluid in bypass return duct Accumulation electrical source, described accumulation electrical source be described wireless signal dispensing device provide power supply.
4. system according to claim 1 it is characterised in that in described trap monitoring device before described drain valve or Sight glass is provided with gas pipeline afterwards, sight glass is used for estimating the gas in gas pipeline, described trap monitoring device Cut-off control valve is respectively arranged with the gas pipeline at two ends.
5. system according to claim 1 is it is characterised in that described control server is sent out with wireless signal by relay station Device is sent to connect, relay station is wirelessly connected with wireless signal dispensing device.
6. system according to claim 5 is it is characterised in that described trap monitoring device has multiple, described relay station Wirelessly connect the wireless signal dispensing device in multiple trap monitoring devices.
7. system according to claim 5 it is characterised in that described relay station pass through cordless communication network or internet with Remote control service device connects.
8. a kind of monitoring method based on trap leaking monitoring system, described trap leaking monitoring system includes gas pipeline With the trap monitoring device of setting on gas pipeline, described trap monitoring device includes drain valve, described drain valve It is arranged on gas pipeline, described trap monitoring device also includes ultrasonic sensor and wireless signal dispensing device, ultrasonic Wave sensor is arranged around drain valve, and the signal of described ultrasonic sensor connects to described wireless signal dispensing device, one The remote control service device being arranged on service station is connected with wireless signal dispensing device, makes in described remote control service device It is provided with:For the leak condition table of different supersonic band change corresponding difference leakage class, it is directed to dissimilar valve The solution matrix of the different solutions of different leakage class formulations of door, and in trap monitoring device drain valve class Type;It is characterized in that, described monitoring method is:
A., when ultrasonic signal in the ultrasonic signal of Real-time Collection ultrasonic sensor;
B. analysis obtains the ghz area of ultrasonic signal;
C. from leak condition table, leakage class is obtained according to ghz area;
D. from solution matrix, solution output is gone out according to the type search of leakage class and drain valve.
9. method according to claim 8 it is characterised in that in described trap monitoring device before described drain valve or Gas pipeline afterwards is additionally provided with gas temperature sensor and gas pressure sensor respectively, and described gas temperature sensor is gentle The signal of pressure sensor connects to described wireless signal dispensing device, and described leak condition table is for different ultrasonic waves The leak condition table of frequency range, change value of pressure, temperature change value corresponding difference leakage class;Methods described further includes:
Gas temperature sensor and the gas pressure on gas pipeline in trap monitoring device is received under No leakage working condition Force sensor signals, record storage gas temperature angle value gentle body pressure value;
When ultrasonic signal occurs, also gather gas temperature sensor and gas pressure sensor signal value further, and Collection gas temperature sensor and gas pressure sensor signal value are compared with the value under No leakage working condition;
The described leakage class that obtains is according to ghz area and the changing value that compares obtains from leak condition table.
10. method according to claim 8 is it is characterised in that described relay station passes through cordless communication network or internet It is connected with remote control service device.
CN201610993295.6A 2016-11-11 2016-11-11 A kind of trap leaking monitoring system and its method Active CN106402641B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610993295.6A CN106402641B (en) 2016-11-11 2016-11-11 A kind of trap leaking monitoring system and its method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610993295.6A CN106402641B (en) 2016-11-11 2016-11-11 A kind of trap leaking monitoring system and its method

Publications (2)

Publication Number Publication Date
CN106402641A true CN106402641A (en) 2017-02-15
CN106402641B CN106402641B (en) 2018-12-28

Family

ID=59229815

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610993295.6A Active CN106402641B (en) 2016-11-11 2016-11-11 A kind of trap leaking monitoring system and its method

Country Status (1)

Country Link
CN (1) CN106402641B (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5398542A (en) * 1992-10-16 1995-03-21 Nkk Corporation Method for determining direction of travel of a wave front and apparatus therefor
CN1103948A (en) * 1994-06-22 1995-06-21 唐新环 Method for detecting the leakage in liquid conveying pipe or storage tank
CN101493372A (en) * 2008-01-23 2009-07-29 中国科学院沈阳自动化研究所 Leakage detection device based on wireless communication
CN201569549U (en) * 2009-12-29 2010-09-01 上海工业自动化仪表研究院 Wireless ultrasonic leakage detection transmitter
CN102095083A (en) * 2010-12-16 2011-06-15 上海工业自动化仪表研究院 Detecting system used for leakage of gas valve
CN103016948A (en) * 2012-12-30 2013-04-03 华北电力大学(保定) Online leak detection device for steam trap of steaming-water pipeline of thermal power plant
CN103424230A (en) * 2012-08-22 2013-12-04 上海理工大学 Ultrasonic-based valve leakage wireless detection device and method
CN203809843U (en) * 2014-04-22 2014-09-03 龙岩烟草工业有限责任公司 Steam trap valve fault detection device and system
CN206708718U (en) * 2016-11-11 2017-12-05 北京疏水阀门厂 A kind of trap leaking monitoring system

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5398542A (en) * 1992-10-16 1995-03-21 Nkk Corporation Method for determining direction of travel of a wave front and apparatus therefor
CN1103948A (en) * 1994-06-22 1995-06-21 唐新环 Method for detecting the leakage in liquid conveying pipe or storage tank
CN101493372A (en) * 2008-01-23 2009-07-29 中国科学院沈阳自动化研究所 Leakage detection device based on wireless communication
CN201569549U (en) * 2009-12-29 2010-09-01 上海工业自动化仪表研究院 Wireless ultrasonic leakage detection transmitter
CN102095083A (en) * 2010-12-16 2011-06-15 上海工业自动化仪表研究院 Detecting system used for leakage of gas valve
CN103424230A (en) * 2012-08-22 2013-12-04 上海理工大学 Ultrasonic-based valve leakage wireless detection device and method
CN103016948A (en) * 2012-12-30 2013-04-03 华北电力大学(保定) Online leak detection device for steam trap of steaming-water pipeline of thermal power plant
CN203809843U (en) * 2014-04-22 2014-09-03 龙岩烟草工业有限责任公司 Steam trap valve fault detection device and system
CN206708718U (en) * 2016-11-11 2017-12-05 北京疏水阀门厂 A kind of trap leaking monitoring system

Also Published As

Publication number Publication date
CN106402641B (en) 2018-12-28

Similar Documents

Publication Publication Date Title
CN103836347A (en) Leakage monitoring device and method for crude oil gathering pipelines
WO2018058702A1 (en) Intelligent monitoring system and method for offshore wind turbine blade fault
CN205350859U (en) Water supply network loss on -line monitoring system
CN201637150U (en) Leak detection device of solar water heating system
CN206708718U (en) A kind of trap leaking monitoring system
CN208172552U (en) A kind of data transmission terminal for central air-conditioning water system remote monitoring
CN207112385U (en) A kind of water supply network warning system for real time monitoring based on cellular arrowband Internet of Things
CN106402641A (en) Trap leakage monitoring system and method
CN2883878Y (en) Lossrate monitoring system of delivery pipeline
CN106290095A (en) A kind of GIS installs workshop cleannes on-Line Monitor Device and method
CN215761645U (en) Automatic monitoring system for working fluid level of oil well
CN216449913U (en) Intelligent environment monitoring system based on Arduino technology
CN204855453U (en) A system of detecting a flaw for robotic arm based on thing networking
CN107693998A (en) A kind of fire fighting device water pressure monitoring device and monitoring system
CN103676887A (en) Photoelectricity curtain wall monitoring system based on Internet of Things
CN203162557U (en) On-line monitoring system for leakage of city water supply pipe network
CN204360536U (en) Based on the teledata monitor and alarm system of GPRS
CN209387796U (en) Superfrequency detection system based on crusing robot
CN111650871A (en) Remote communication monitoring system for operation of distributed ground source heat pump machine room
CN208818240U (en) A kind of circular section pipeline fluid monitoring device
CN202916243U (en) Bus duct operating condition real-time wireless monitoring system
CN207462526U (en) A kind of fire fighting device water pressure monitoring device and monitoring system
CN205229862U (en) Humiture monitoring system based on electric power carrier wave communication
CN206757355U (en) A kind of Intelligent three-way pipe based on LPWAN wireless telecommunications
CN205280167U (en) Steam flow of solar energy power supply measures wireless transmission device

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant