CN109813847A - A kind of management system and method for gas sensor - Google Patents
A kind of management system and method for gas sensor Download PDFInfo
- Publication number
- CN109813847A CN109813847A CN201910099838.3A CN201910099838A CN109813847A CN 109813847 A CN109813847 A CN 109813847A CN 201910099838 A CN201910099838 A CN 201910099838A CN 109813847 A CN109813847 A CN 109813847A
- Authority
- CN
- China
- Prior art keywords
- module
- measured
- sensor
- server
- parameter
- 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.)
- Pending
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The present invention relates to gas sensor technical fields, disclose a kind of management system of gas sensor, the sensor and standard transducer to be measured being connect based on server and with server data, including the module of supplying gas with server and standard transducer data connection, the identification module being connect with sensing data to be measured, the terminal module being connect with server data, server is generated according to status information and standard parameter for calibrating pick up calibration parameter to be measured, and calibration parameter is sent to terminal module, lead to the test gas for sending same concentration to standard transducer and sensor to be measured using module of supplying gas, the output quantity of sensor to be measured is read by terminal module, the standard parameter of the output of standard module is read by module of supplying gas, output quantity is handled according to standard parameter by server again, and to display module export calibration parameter into Row display, facilitates staff to carry out calibration operation to sensor to be measured, facilitates management service.
Description
Technical field
The present invention relates to gas sensor technical fields, more specifically, it relates to a kind of management system of gas sensor
System and method.
Background technique
Nowadays natural gas is as a kind of clean energy resource, is widely used in production, in life, gives daily life bring pole
Big convenience.The conveying of natural gas is generally used the supply of concentration at this stage, from different natural gas lines to huge numbers of families
Natural gas is conveyed with for people to use.
Natural gas large-scale use so necessarily can also generate many safety problems, for example pipeline breaking, combustion gas are let out
The case where leakage, in order to find that the leakage of natural gas has just used a kind of gas leakage inductor in advance, it is passed people by gas
Sensor detect ambient enviroment in low concentration fuel gas, then after over-sampling circuit handles detectable signal with control circuit
In preset calibrations value be compared, come control execution unit issue alarm signal or execute gas valve close supply line,
Achieve the effect that prevent trouble before it happens.
After prolonged work, internal preset calibrations value can be because its element be protected from environmental gas sensor
And the offset of data occurs, so that gas detection is generated error, and then will appear the situation of alarm inaccuracy, this is to fuel gas
It is particularly disadvantageous to detect early warning.The calibration of existing gas sensor relies on standard transducer more and detects to sensor to be measured,
The output situation of testing standard sensor and sensor to be measured under same concentration joins sensor to be measured according to situation is compared
Number compensation.
However, in practice, a large amount of gas sensor can be used and be monitored to combustion gas, and be installed in the user's home
Gas sensor general position than more covert, when carrying out daily management maintenances to these a large amount of gas sensors, very not
It is convenient.
Summary of the invention
In view of the above-mentioned problems, the purpose of the present invention is to provide a kind of management system of gas sensor and method, tool
The advantages of being easily managed maintenance.
Foregoing invention purpose of the invention has the technical scheme that
A kind of management system of gas sensor, the sensor and mark to be measured being connect based on server and with the server data
Quasi- sensor, comprising:
With the module of supplying gas of the server and the standard transducer data connection, it is used for simultaneously to the standard transducer
The test gas of same concentration, and the output parameter by the standard transducer under the concentration are provided with the sensor to be measured
As server described in the real-time typing of standard parameter；
The identification module being connect with the sensing data to be measured, for storing simultaneously real time emission and the sensors association to be measured
Status information, the status information includes with unique code of the sensor matching to be measured, the sensor to be measured described
Test the output quantity under gas；
The terminal module connecting with the server data is sent for reading the status information, and by the status information
The server is stored；
The server is according to the state information and the standard parameter is generated for calibrating the pick up calibration to be measured
Parameter, and the calibration parameter is sent to the terminal module；
The terminal module includes the display module for showing the calibration parameter and the confession to display module power supply
Electric portion.
Through the above technical solutions, leading to the survey for sending same concentration to standard transducer and sensor to be measured using module of supplying gas
Gas testing body is read the output quantity of sensor to be measured by terminal module, is joined by the standard that module of supplying gas reads the output of standard module
Number, then output quantity is handled according to standard parameter by server, and is shown to display module output calibration parameter, side
Just staff carries out calibration operation to sensor to be measured, facilitates management service.
The present invention is further arranged to: the identification module includes the processing chip connecting with the sensing data to be measured
The RF tag being connect with the processing chip data and the power supply powered to the processing chip and the RF tag
Module；
The processing chip is for reading and storing the status information, and the RF tag is by way of radio to outgoing
Penetrate the status information.
Through the above technical solutions, facilitating terminal by the RF tag outwardly emission state information in a manner of radio
Module carries out distance reception to status information, and staff is facilitated to carry out calibration operation to sensor to be measured, and management is facilitated to tie up
Shield, and RF tag itself has stronger identity, can precisely be distinguished according to unique code to sensor to be measured.
The present invention is further arranged to: the terminal module includes reader and the receipts that connect with the reader data
Send out module；
The power supply is powered to the reader and the transceiver module；
The reader is used to read the status information that the RF tag issues；
The transceiver module is connect with the server data, for receiving the status information and sending institute to the server
State status information.
Through the above technical solutions, by reader certain distance close to sensor to be measured can reception state letter
Breath, without directly being contacted with sensor to be measured, convenient for staff when inconvenience operates sensor to be measured dimension
Pillar reason.
The present invention is further arranged to: the server include and supply gas module data connection processing module, with it is described
The storage module of the telecommunication module of processing module data connection and the processing module data connection and the storage
The transmitting module of module data connection；
The processing module is connect with the module data of supplying gas, for receiving the standard parameter and writing the standard parameter
Enter the storage module；
The telecommunication module is used to receive the status information that the transceiver module issues, and the processing module receives
The calibration parameter is generated after the status information processing, and the storage module is written into the calibration parameter；
The transceiver module and the transmitting module data connection；
The transmitting module reads the storage module and the calibration parameter is sent to the transceiver module.
Through the above technical solutions, storage module can get up calibration parameter collection, facilitate the subsequent arrangement to data, and
The selection for using telecommunication module and transmitting module to make the decorating position of server is wider, more practical.
The present invention is further arranged to: the display module and the transceiver module data connection, and is shown by the receipts
Send out the calibration parameter that module issues.
Through the above technical solutions, calibration parameter is sent to terminal module at a distance, and shown by display module, side
Just staff manages, more convenient to use.
The present invention is further arranged to: a kind of management method of gas sensor, based on server and with the server
The sensor and standard transducer to be measured of data connection, comprising:
S1: the test gas of same concentration is provided to the sensor to be measured and the standard transducer by supplying gas module, together
When using the standard transducer in the output parameter under the concentration as server described in the real-time typing of standard parameter；
S2: by identification module by with the status information of the sensors association to be measured outwardly real time emission；
S3: the status information is read by terminal module, and the status information is sent into the server, the state letter
Breath includes the output quantity with unique code of the sensors association to be measured, the sensor to be measured under the test gas；
S4: by the server according to the state information and the standard parameter generate for calibrating the sensing to be measured
Device calibration parameter, and the calibration parameter is sent to the terminal module, the calibration parameter is shown by the terminal module.
Through the above technical solutions, standard parameter and state letter when obtaining in same test gas concentration
Breath, status information includes output quantity and unique code, and each sensor output quantity to be measured is corresponding with unique code of the sensor to be measured,
Calibration parameter is obtained after status information is compared with standard parameter by server, and is shown by terminal module, side
Just staff carries out calibration operation to sensor to be measured, facilitates management service.
The present invention is further arranged to: the step S2 includes:
S21: by handle chip read and store with unique code of the sensors association to be measured and with unique code
Matched output quantity；
S22: unique code and the output quantity are launched outward in the form of radio RF tag.
Through the above technical solutions, facilitating terminal by the RF tag outwardly emission state information in a manner of radio
Module carries out distance reception to status information, and staff is facilitated to carry out calibration operation to sensor to be measured, and management is facilitated to tie up
Shield, and RF tag itself has stronger identity, can precisely be distinguished according to unique code to sensor to be measured.
The present invention is further arranged to: the step S3 includes:
S31: RF tag is received reader and launches outward the output quantity in the form of radio；
S32: the output quantity is received by transceiver module and is sent to the telecommunication module, then by the telecommunication
Module sends the output quantity to the processing module.
Through the above technical solutions, by reader certain distance close to sensor to be measured can reception state letter
Breath, without directly being contacted with sensor to be measured, convenient for staff when inconvenience operates sensor to be measured dimension
Pillar reason.
The present invention is further arranged to: the step S4 includes:
S41: transferring the standard parameter by processing module from the storage module, and according to the standard parameter and described
Output quantity generates the calibration parameter with the sensor matching to be measured；
S42: the calibration parameter is sent to the transceiver module by transmitting module；
S43: the calibration parameter is shown by the display module.
Through the above technical solutions, the display module of terminal module can show calibration parameter to staff, for work
Personnel refer to, and facilitate the in-situ processing of staff.
Compared with prior art, the beneficial effects of the present invention are:
By using module of supplying gas to standard transducer and sensor to be measured while the logical test gas for sending same concentration, by terminal
Module reads the output quantity of sensor to be measured, the standard parameter of the output of standard module is read by module of supplying gas, then by server
Output quantity is handled according to standard parameter, and is shown to display module output calibration parameter, staff couple is facilitated
Sensor to be measured carries out calibration operation, facilitates management service.
Detailed description of the invention
Fig. 1 is that the overall data of the embodiment of the present invention flows to schematic diagram；
Fig. 2 is the data flow schematic diagram of the embodiment of the present invention.
Appended drawing reference: 1, server；2, it supplies gas module；3, identification module；4, terminal module.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention will be described in detail.
A kind of management system of gas sensor, based on server 1 and with the sensor to be measured of 1 data connection of server with
And standard transducer, including with server 1 and standard transducer data connection module 2 of supplying gas, with sensing data to be measured connect
Identification module 3, the terminal module 4 with 3 data connection of server 1 and identification module connect.
Module of supplying gas 2 can be divided into criteria section and multiple parts to be measured, and criteria section is fixed on by standard transducer in advance,
And the reading part including being electrically connected with standard transducer and server 1, part to be measured are fixed in advance by sensor to be measured, standard
Part and part to be measured can provide the test gas of same concentration to standard transducer and sensor to be measured simultaneously, and by standard portion
Divide the output parameter using standard transducer under the concentration as the real-time typing server 1 of standard parameter.
Server 1 includes leading to the processing module for 2 data connection of module of supplying gas and the remote of processing module data connection
Believe module, the transmitting module with the storage module of processing module data connection and storage module data connection.Module of supplying gas 2
Signal output end and processing module data connection.
Identification module 3 include the processing chip being connect with sensing data to be measured and with the radio frequency that connect of processing chip data
Label and the power supply module powered to processing chip and RF tag, processing chip are penetrated for reading and storing state information
Frequency marking label launch outward status information by way of radio.
Terminal module 4 includes the reader that the status information that RF tag emits can be read, connect with reader data
Transceiver module, power supply and display module, transceiver module and telecommunication module pass through wireless signal data connection, power supply
Portion powers to reader and transceiver module and display module, and display module and transmitting module connect with transceiver module data
It connects.
A kind of management method of gas sensor, based on server 1 and with the sensor to be measured of 1 data connection of server and
Typical terminal block 4, includes the following steps:
Step S1: the test gas of same concentration is provided to sensor to be measured and standard transducer by supplying gas module 2, simultaneously will
Output parameter of the standard transducer under the concentration is as the real-time typing server 1 of standard parameter.
Step S2: with the status information of the sensors association to be measured and outwardly real time emission by the identification of identification module 3；
Step S2 includes:
Step S21: being read by handling chip and is stored with unique code of sensors association to be measured and matched defeated with unique code
Output.It is convenient for distinguishing different sensor to be measured and its output quantity using unique code.
Step S22: unique code and output quantity are launched outward in the form of radio RF tag.With RF tag
The outwardly emission state information in a manner of radio facilitates terminal module 4 to carry out distance reception to status information, facilitates work
Make personnel and calibration operation and management service are carried out to sensor to be measured.
Step S3: server 1 is sent by 4 read status information of terminal module, and by status information, status information includes
With the output quantity of the unique code, sensor to be measured of sensors association to be measured in the case where testing gas；
Step S3 includes:
S31: the output quantity that RF tag is launched outward in the form of radio is read reader；
S32: output quantity is obtained from reader by transceiver module and is sent to telecommunication module, then by telecommunication mould
Block sends output quantity to processing module.By reader certain distance close to sensor to be measured can receiving status information,
Without directly contacting with sensor to be measured, then by transceiver module and 1 telecommunication of server, transceiver module can also send out reader
Output quantity out is sent to display module and shows, convenient for server 1 ground staff and scene staff to right
Sensor to be measured carries out operation and maintenance management.
Step S4: server 1 is generated according to status information and standard parameter for calibrating pick up calibration parameter to be measured,
And calibration parameter is sent to terminal module 4, calibration parameter is shown by terminal module 4.
Step S4 includes:
S41: transferring standard parameter by processing module from storage module, and according to standard parameter and output quantity generate with it is to be measured
The calibration parameter of sensor matching；
S42: calibration parameter is sent to transceiver module by transmitting module；
S43: calibration parameter is shown by display module.Processing module can believe calibration by display module after obtaining output quantity
Breath is shown that the staff of convenient hand-held hand held terminal module 4 carries out calibration operation to sensor to be measured, and management is facilitated to tie up
Shield.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of management system of gas sensor is based on server (1) and the biography to be measured with the server (1) data connection
Sensor and standard transducer characterized by comprising
With the module of supplying gas (2) of the server (1) and the standard transducer data connection, it is used for simultaneously to the standard
Sensor and the sensor to be measured provide the test gas of same concentration, and the standard transducer is defeated under the concentration
Parameter is as server (1) described in the real-time typing of standard parameter out；
The identification module (3) being connect with the sensing data to be measured, for storing simultaneously real time emission and the sensor to be measured
Associated status information, the status information include existing with unique code of the sensor matching to be measured, the sensor to be measured
Output quantity under the test gas；
With the terminal module (4) of the server (1) data connection, believe for reading the status information, and by the state
Breath sends the server (1) and is stored；
The server (1) is according to the state information and the standard parameter is generated for calibrating the sensor school to be measured
Quasi- parameter, and the calibration parameter is sent to the terminal module (4)；
The terminal module (4) includes display module for showing the calibration parameter and powers to the display module
Power supply.
2. the management system of gas sensor according to claim 1, which is characterized in that the identification module (3) includes
The processing chip that is connect with the sensing data to be measured and RF tag connect with the processing chip data and to institute
State the power supply module of processing chip and RF tag power supply；
The processing chip is for reading and storing the status information, and the RF tag is by way of radio to outgoing
Penetrate the status information.
3. the management system of gas sensor according to claim 2, which is characterized in that the terminal module (4) includes
Reader and the transceiver module being connect with the reader data；
The power supply is powered to the reader and the transceiver module；
The reader is used to read the status information that the RF tag issues；
The transceiver module and the server (1) data connection, for receiving the status information and to the server (1)
Send the status information.
4. the management system of gas sensor according to claim 3, which is characterized in that the server (1) include with
The telecommunication module of the processing module of module of supplying gas (2) data connection and the processing module data connection and the place
Storage module, the transmitting module with the storage module data connection for managing module data connection；
The processing module and module of supplying gas (2) data connection, for receiving the standard parameter and joining the standard
The storage module is written in number；
The telecommunication module is used to receive the status information that the transceiver module issues, and the processing module receives
The calibration parameter is generated after the status information processing, and the storage module is written into the calibration parameter；
The transceiver module and the transmitting module data connection；
The transmitting module reads the storage module and the calibration parameter is sent to the transceiver module.
5. the management system of gas sensor according to claim 4, which is characterized in that the display module and the receipts
Module data connection is sent out, and shows the calibration parameter issued by the transceiver module.
6. a kind of management method of gas sensor is based on server (1) and the biography to be measured with the server (1) data connection
Sensor and standard transducer characterized by comprising
S1: providing the test gas of same concentration to the sensor to be measured and the standard transducer by module of supplying gas (2),
Simultaneously using the standard transducer in the output parameter under the concentration as server (1) described in the real-time typing of standard parameter；
S2: with the status information of the sensors association to be measured and outwardly real time emission by identification module (3) identification；
S3: reading the status information by terminal module (4), and the status information sent the server (1), described
Status information includes the output with unique code of the sensors association to be measured, the sensor to be measured under the test gas
Amount；
S4: the server (1) is according to the state information and the standard parameter is generated for calibrating the sensing to be measured
Device calibration parameter, and the calibration parameter is sent to the terminal module (4), the school is shown by the terminal module (4)
Quasi- parameter.
7. according to claim 6, which is characterized in that the step S2 includes:
S21: by handle chip read and store with unique code of the sensors association to be measured and with unique code
Matched output quantity；
S22: unique code and the output quantity are launched outward in the form of radio RF tag.
8. according to claim 7, which is characterized in that the step S3 includes:
S31: the output quantity that RF tag is launched outward in the form of radio is read reader；
S32: output quantity is obtained from reader by transceiver module and is sent to telecommunication module, then by telecommunication mould
Block sends output quantity to processing module.
9. according to claim 8, which is characterized in that the step S4 includes:
S41: logical processing module transfers the standard parameter from the storage module, and according to the standard parameter and described defeated
Output generates the calibration parameter with the sensor matching to be measured；
S42: the calibration parameter is sent to the transceiver module by transmitting module；
S43: the calibration parameter is shown by the display module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910099838.3A CN109813847A (en) | 2019-01-31 | 2019-01-31 | A kind of management system and method for gas sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910099838.3A CN109813847A (en) | 2019-01-31 | 2019-01-31 | A kind of management system and method for gas sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109813847A true CN109813847A (en) | 2019-05-28 |
Family
ID=66606241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910099838.3A Pending CN109813847A (en) | 2019-01-31 | 2019-01-31 | A kind of management system and method for gas sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109813847A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426492A (en) * | 2019-08-01 | 2019-11-08 | 无锡格林通安全装备有限公司 | A kind of test method of gas detector, apparatus and system |
| CN110821563A (en) * | 2019-10-29 | 2020-02-21 | 天地（常州）自动化股份有限公司 | Identification method and device |
| CN111983147A (en) * | 2020-08-18 | 2020-11-24 | 深圳安志生态环境有限公司 | Calibration device, server, calibration method and calibration system |
| CN112781641A (en) * | 2020-12-01 | 2021-05-11 | 西安中星测控有限公司 | Wireless calibration device and method for sensor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103237362A (en) * | 2013-03-28 | 2013-08-07 | 浙江大学 | Wireless sensor network mobile node used for sensor calibration |
| CN104504836A (en) * | 2015-01-09 | 2015-04-08 | 广州市泰昌实业有限公司 | Data information collecting device and method for natural gas fire alarm system |
| CN104916083A (en) * | 2015-05-20 | 2015-09-16 | 安庆师范学院 | Internet of things based intelligent combustible gas inspection detector and calibration method thereof |
| CN105987716A (en) * | 2015-02-05 | 2016-10-05 | 南京锐达金电子科技有限公司 | Sensor calibration method based on wireless communication |
| CN106990028A (en) * | 2017-06-09 | 2017-07-28 | 广州勒夫迈智能科技有限公司 | A kind of sensor of dust concentration calibration system |
| CN206920856U (en) * | 2015-10-30 | 2018-01-23 | 费希尔控制产品国际有限公司 | For correcting the device and process control equipment of sensor |
-
2019
- 2019-01-31 CN CN201910099838.3A patent/CN109813847A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103237362A (en) * | 2013-03-28 | 2013-08-07 | 浙江大学 | Wireless sensor network mobile node used for sensor calibration |
| CN104504836A (en) * | 2015-01-09 | 2015-04-08 | 广州市泰昌实业有限公司 | Data information collecting device and method for natural gas fire alarm system |
| CN105987716A (en) * | 2015-02-05 | 2016-10-05 | 南京锐达金电子科技有限公司 | Sensor calibration method based on wireless communication |
| CN104916083A (en) * | 2015-05-20 | 2015-09-16 | 安庆师范学院 | Internet of things based intelligent combustible gas inspection detector and calibration method thereof |
| CN206920856U (en) * | 2015-10-30 | 2018-01-23 | 费希尔控制产品国际有限公司 | For correcting the device and process control equipment of sensor |
| CN106990028A (en) * | 2017-06-09 | 2017-07-28 | 广州勒夫迈智能科技有限公司 | A kind of sensor of dust concentration calibration system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426492A (en) * | 2019-08-01 | 2019-11-08 | 无锡格林通安全装备有限公司 | A kind of test method of gas detector, apparatus and system |
| CN110821563A (en) * | 2019-10-29 | 2020-02-21 | 天地（常州）自动化股份有限公司 | Identification method and device |
| CN111983147A (en) * | 2020-08-18 | 2020-11-24 | 深圳安志生态环境有限公司 | Calibration device, server, calibration method and calibration system |
| CN112781641A (en) * | 2020-12-01 | 2021-05-11 | 西安中星测控有限公司 | Wireless calibration device and method for sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109813847A (en) | A kind of management system and method for gas sensor | |
| US8723653B2 (en) | Asset identification and management method and system | |
| WO2012006296A2 (en) | System and method of determining gas detector information and status via rfid tags | |
| WO2020135588A1 (en) | Water pressure and water flow measurement system and method for water conveying pipe network | |
| CN103020804B (en) | Logistics information interactive method and logistic information systems | |
| CN203759763U (en) | Intelligent power equipment patrol system based on RFID technique | |
| CN106203200A (en) | A kind of live working tools intelligent identification Method and system | |
| CN209623792U (en) | A kind of wireless intelligent water meter | |
| CN202534018U (en) | Intelligent inspection management system for oil field | |
| CN103065185A (en) | Radio frequency electronic label capable of taking temperatures of animals | |
| CN106843019A (en) | A kind of IC-card gas meter, flow meter | |
| CN207817778U (en) | A kind of warehousing management portable terminal | |
| US20240295280A1 (en) | Apparatus and method for monitoring and managing the connection and operation of lines of a hydraulic system | |
| CN108009781A (en) | A kind of medium-sized logistics real time monitoring and traceability system | |
| CN108495290A (en) | A kind of prison institute mobile terminal supervisory systems and method based on bluetooth | |
| CN203911984U (en) | Sample positioning and monitoring system | |
| CN206075307U (en) | A kind of RFID access doors with direction discernment | |
| US20150028999A1 (en) | Generation of trigger events by rfid labels | |
| CN207181585U (en) | A kind of intelligent stroller ground detection device in ESD workshops | |
| CN203054894U (en) | A radio frequency electronic label capable of measuring animal temperature | |
| CN105160383A (en) | Safety-state-monitoring early-warning type active electronic tag and method for detecting to-be-detected object by using the same | |
| CN110632884A (en) | Low-power consumption monitoring device | |
| CN104596585A (en) | Handheld type intelligent detection device of air conditioning refrigerating system | |
| CN208654824U (en) | A kind of harbour energy consumption real time monitoring inquiry system | |
| CN110320329A (en) | Gas patrolling and checking management system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190528 |
|
| RJ01 | Rejection of invention patent application after publication |