CN109827642A - A kind of ultrasonic wave gas meter calibration system and method based on WIFI communication - Google Patents

A kind of ultrasonic wave gas meter calibration system and method based on WIFI communication Download PDF

Info

Publication number
CN109827642A
CN109827642A CN201910248349.XA CN201910248349A CN109827642A CN 109827642 A CN109827642 A CN 109827642A CN 201910248349 A CN201910248349 A CN 201910248349A CN 109827642 A CN109827642 A CN 109827642A
Authority
CN
China
Prior art keywords
ultrasonic wave
gas meter
wave gas
wifi communication
calibrated
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
Application number
CN201910248349.XA
Other languages
Chinese (zh)
Inventor
李建炜
刘贵平
常兴智
张军
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.)
Ningxia LGG Instrument Co Ltd
Original Assignee
Ningxia LGG Instrument Co Ltd
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 Ningxia LGG Instrument Co Ltd filed Critical Ningxia LGG Instrument Co Ltd
Priority to CN201910248349.XA priority Critical patent/CN109827642A/en
Publication of CN109827642A publication Critical patent/CN109827642A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measuring Volume Flow (AREA)

Abstract

This application discloses a kind of ultrasonic wave gas meter calibration system based on WIFI communication, WIFI communication module and master control upper computer including standard testing platform, the control panel for being installed on ultrasonic wave gas meter to be calibrated;Master control upper computer is communicated to connect with WIFI communication module and standard testing platform respectively, for receiving the normal flow data of standard testing platform offer and receiving by WIFI communication module the current traffic data of ultrasonic wave gas meter to be calibrated, and the error amount of analyse and compare normal flow data and current traffic data to calibrate ultrasonic wave gas meter to be calibrated automatically.The current traffic data of each flow point of ultrasonic wave gas meter to be calibrated can be transmitted to master control upper computer by WIFI communication module, and then be calibrated by master control upper computer to ultrasonic wave gas meter by the system, and calibration efficiency and precision are higher.In addition, present invention also provides a kind of ultrasonic wave gas meter calibration method based on WIFI communication, effect is as above.

Description

A kind of ultrasonic wave gas meter calibration system and method based on WIFI communication
Technical field
This application involves gas meter, flow meter application fields more particularly to a kind of ultrasonic wave gas meter based on WIFI communication to calibrate system System and method.
Background technique
Sonic nozzle testboard is only applicable to calibration diaphragm gas meter at present, and is carried out by way of reading character wheel Calibration.Requirement with gas metering field to gas metering precision is higher and higher, and ultrasonic wave gas meter is rising.Ultrasound Wave gas meter, flow meter has that broad quantum, that small in size, structure is simple, measuring accuracy is high, stability is good etc. is excellent compared with diaphragm gas meter Point;But ultrasonic wave gas meter is all electronic structure, without character wheel, so not being available sonic nozzle testboard calibration ultrasonic wave Gas meter, flow meter.
It can be seen that how to realize that be that those skilled in the art are urgently to be resolved to the calibration problem of ultrasonic wave gas meter ask Topic.
Summary of the invention
This application provides a kind of ultrasonic wave gas meter calibration systems and method based on WIFI communication, solve existing skill How calibration problem to ultrasonic wave gas meter is realized in art.
In order to solve the above technical problems, this application provides a kind of ultrasonic wave gas meters based on WIFI communication to calibrate system System, comprising:
Standard testing platform, be installed on ultrasonic wave gas meter to be calibrated control panel WIFI communication module and master control it is upper Machine;
The master control upper computer is communicated to connect with the WIFI communication module and the standard testing platform respectively, for receiving The normal flow data and be used to pass through the WIFI communication module reception ultrasound to be calibrated that the standard testing platform provides The current traffic data of wave gas meter, flow meter, and the error amount of the analyse and compare normal flow data and the current traffic data with The ultrasonic wave gas meter to be calibrated is calibrated automatically.
Preferably, the control panel is equipped with the main control chip of the ultrasonic wave gas meter to be calibrated, the main control chip It is connect with the WIFI communication module.
Preferably, the standard testing platform is connect by RS485 interface with the master control upper computer.
Preferably, further includes:
The alarm module being connect with the master control upper computer.
Preferably, the alarm module is buzzer and/or indicator light.
In order to solve the above technical problems, present invention also provides a kind of ultrasonic wave gas meter calibrations communicated with based on WIFI The corresponding ultrasonic wave gas meter calibration method based on WIFI communication, based on what is communicated described in any one of the above based on WIFI Ultrasonic wave gas meter calibration system, comprising:
Receive the normal flow data that standard testing platform provides and the normal flow number that ultrasonic wave gas meter to be calibrated provides According to;
The normal flow data of analysing and comparing and the current traffic data, and judge corresponding with same test flow point The normal flow data and the current traffic data error amount whether within a preset range;
If it is not, then the normal flow data corresponding with current test flow point is sent by WIFI communication module To the ultrasonic wave gas meter to be calibrated to be calibrated to the ultrasonic wave gas meter to be calibrated;
If it is, determining the ultrasonic wave gas meter to be calibrated in the current test flow point without calibration.
Preferably, before the normal flow data that the reception standard testing platform provides, further includes:
It is that standard testing platform setting tests flow point so that the standard testing platform is according to setting means by serial ports It works.
Compared with the prior art, a kind of ultrasonic wave gas meter calibration system based on WIFI communication provided herein, WIFI communication module and master control upper computer including standard testing platform, the control panel for being installed on ultrasonic wave gas meter to be calibrated; Master control upper computer is communicated to connect with WIFI communication module and standard testing platform respectively, for receiving the standard of standard testing platform offer Data on flows and current traffic data for receiving ultrasonic wave gas meter to be calibrated by WIFI communication module, and analyse and compare The error amount of normal flow data and current traffic data to calibrate ultrasonic wave gas meter to be calibrated automatically.Thus may be used See, it, can be by WIFI communication module by the current stream of each flow point of ultrasonic wave gas meter to be calibrated using this calibration system Amount data are transmitted to master control upper computer, then remove analyses and comparison current traffic data and normal flow data using master control upper computer Between error amount, and then realize the calibration problem to ultrasonic wave gas meter, and calibration efficiency and precision are higher.Separately Outside, present invention also provides a kind of ultrasonic wave gas meter calibration method based on WIFI communication, effect is as above.
Detailed description of the invention
For the clearer technical solution for illustrating the application, letter will be made to attached drawing needed in the embodiment below The introduction wanted, it should be apparent that, it for those of ordinary skills, can be under the premise of not paying creativeness It obtains other drawings based on these drawings.
Fig. 1 shows for a kind of ultrasonic wave gas meter calibration system structure based on WIFI communication provided by the embodiment of the present invention It is intended to;
Fig. 2 is a kind of ultrasonic wave gas meter calibration method process based on WIFI communication provided by the embodiment of the present invention Figure.
Specific embodiment
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with attached drawing, it is right Technical solution in the embodiment of the present application carries out clear and complete description.
The core of the application is to provide a kind of ultrasonic wave gas meter calibration system and method based on WIFI communication, can solve The calibration problem to ultrasonic wave gas meter certainly how is realized in the prior art.
Fig. 1 shows for a kind of ultrasonic wave gas meter calibration system structure based on WIFI communication provided by the embodiment of the present invention It is intended to, as shown in Figure 1, the calibration system includes:
Standard testing platform 1, be installed on ultrasonic wave gas meter to be calibrated control panel 2 WIFI communication module 3 and master control Host computer 4;
Master control upper computer 4 is communicated to connect with WIFI communication module 3 and standard testing platform 1 respectively, for receiving standard testing The normal flow data that platform provides and the present flow rate number for receiving ultrasonic wave gas meter to be calibrated by WIFI communication module 3 According to, and the error amount of analyse and compare normal flow data and current traffic data is automatic to carry out to ultrasonic wave gas meter to be calibrated Calibration.
Specifically, ultrasonic wave gas meter to be calibrated contains control panel 2, and WIFI communication module 3 is provided on control panel 2, Control panel 2 is exactly pcb board in fact, preferably embodiment, and ultrasonic wave gas meter to be calibrated is additionally provided on control panel 2 Main control chip, main control chip are directly connect with WIFI communication module 3, and master control upper computer 4 is connect with WIFI communication module 3, can be with Present flow rate point data is sent to master control upper computer 4, completes the data calibration of each flow point.Master control upper computer 4 is gone back and standard Testboard 1 communicates to connect, for receiving the normal flow data of the offer of standard testing platform 1.Preferably embodiment, standard Testboard 1 is connect by RS485 interface with master control upper computer 4.Particularly as being all provided in standard testing platform 1 and master control upper computer 4 It is equipped with RS485 interface, the two is attached by RS485 interface, is carried out data transmission by RS485 agreement, data transmission speed Degree is very fast.In practical applications, master control upper computer 4 can be controlled by related serial ports standard testing platform 1 thereon.Standard Testboard 1 not only can produce normal flow data, but also can real-time testing present flow rate point, and send master control in time Host computer 4.It, can be to normal flow data and current when master control upper computer 4 receives normal flow data and current traffic data Data on flows is analysed and compared, and then obtains the error amount between normal flow data and current traffic data, specifically, when Under a certain flow point, error amount within a preset range when, mean that stream of the ultrasonic wave gas meter to be calibrated under the flow point It is accurate to measure data, does not need to calibrate, under a certain flow point, when error amount is not had within a preset range, means that be calibrated Data on flows inaccuracy of the ultrasonic wave gas meter under the flow point, needs to calibrate, and the concrete mode of calibration is will to survey with current The corresponding normal flow data of examination flow point is sent to ultrasonic wave gas meter to be calibrated, and then realization pair by WIFI communication module The data on flows of ultrasonic wave gas meter to be calibrated is calibrated.It repeats the above steps, until the mark analysed and compared under all flow points Error amount between quasi- data on flows and current traffic data, until each flow point calibrates completion.Then a batch is changed again Ultrasonic wave gas meter to be calibrated is calibrated.Preset range can be determined according to the actual situation, and the present invention is simultaneously not construed as limiting.
A kind of ultrasonic wave gas meter calibration system based on WIFI communication provided herein, including standard testing platform, It is installed on the WIFI communication module and master control upper computer of the control panel of ultrasonic wave gas meter to be calibrated;Master control upper computer respectively with WIFI communication module and the communication connection of standard testing platform, for receiving the normal flow data of standard testing platform offer and for leading to It crosses WIFI communication module and receives the current traffic data of ultrasonic wave gas meter to be calibrated, and analyse and compare and normal flow data and work as The error amount of preceding data on flows to calibrate ultrasonic wave gas meter to be calibrated automatically.It can be seen that using this calibration system, The current traffic data of each flow point of ultrasonic wave gas meter to be calibrated can be transmitted in master control by WIFI communication module Position machine, then removes the error amount between analyses and comparison current traffic data and normal flow data using master control upper computer, in turn The calibration problem to ultrasonic wave gas meter is realized, and calibration efficiency and precision are higher.
In order to keep calibration system more intelligent, on the basis of the above embodiments, preferably embodiment, is also wrapped It includes:
The alarm module being connect with master control upper computer 4.Preferably embodiment, alarm module can be buzzer And/or indicator light.Specifically, can not exist in the error amount between normal flow data and current traffic data of analysing and comparing out After calibrating in preset range or to the data on flows of some flow point of ultrasonic wave gas meter to be calibrated, pass through bee Ring device and/or indicator light carry out warning note related personnel, so as to the calibration situation at related personnel's timely learning scene.
Retouch in detail above for a kind of embodiment of ultrasonic wave gas meter calibration system based on WIFI communication It states, the ultrasonic wave gas meter calibration system based on WIFI communication described based on the above embodiment, the embodiment of the present invention also provides A kind of ultrasonic wave gas meter calibration method based on WIFI communication corresponding with the system.Due to the implementation of calibration method part Example is corresponded to each other with the embodiment of calibration system part, therefore the embodiment of calibration method part please refers to calibration system part Embodiment description, which is not described herein again.
Fig. 2 is a kind of ultrasonic wave gas meter calibration method process based on WIFI communication provided by the embodiment of the present invention Figure, as shown in Fig. 2, based on the ultrasonic wave gas meter calibration system based on WIFI communication that any one above-mentioned embodiment provides, The calibration method the following steps are included:
S101: the normal flow data that standard testing platform provides and the current stream that ultrasonic wave gas meter to be calibrated provides are received Measure data.
S102: analyses and comparison normal flow data and current traffic data, and judge corresponding with same test flow point The error amount of normal flow data and current traffic data whether within a preset range, if it is not, then enter step S103, if It is then to enter step S104.
S103: will normal flow data corresponding with current test flow point be sent to by WIFI communication module it is to be calibrated Ultrasonic wave gas meter is to calibrate ultrasonic wave gas meter to be calibrated.
S104: determine ultrasonic wave gas meter to be calibrated in currently test flow point without calibration.
On the basis of the above embodiments, preferably embodiment, in the normal stream for receiving standard testing platform and providing Before amount data, further includes:
It is standard testing platform setting test flow point so that standard testing platform works according to setting means by serial ports.
In practical application, first, need to start master control upper computer calibration port, determine master control upper computer friendship table port with The connection of standard testing platform is normal.Second, master control upper computer passes through the test flow point of serial port setting standard testing platform, makes testboard Work according to master control setting means, and upload the instantaneous flow data of present flow rate point | (normal flow data).Third, Master control upper computer connects ultrasonic wave gas meter to be calibrated by WIFI communication module, determines that connection is normal.4th, master control is upper Machine controls the work of standard testing platform, and reads the normal flow data of current test flow point;Master control upper computer is logical by WIFI Letter module reads ultrasonic wave gas meter to be calibrated in the current traffic data of currently test flow point.5th, execute step S102. 6th, if the error amount of normal flow data and current traffic data with current test without within a preset range, will just flow The corresponding normal flow data of amount point is sent to ultrasonic wave gas meter to be calibrated, ultrasonic wave to be calibrated by WIFI communication module Gas meter, flow meter receives the standard test data from master control upper computer, then by the main control chip on master control borad to corresponding current Data on flows is calibrated, and the calibration of the data on flows of next test flow point is then carried out again, until each flow point Calibration is completed.If the error amount of normal flow data and current traffic data is within a preset range, so that it may determine to be calibrated Ultrasonic wave gas meter, without calibration, then carries out the school of the data on flows of next test flow point in currently test flow point again Standard, until each flow point calibrates completion.Later again in an identical manner to the stream of next group ultrasonic wave gas meter to be calibrated Amount data are calibrated.
A kind of ultrasonic wave gas meter calibration method based on WIFI communication provided herein, first reception standard testing The normal flow data that the normal flow data and ultrasonic wave gas meter to be calibrated that platform provides provide.Then it analyses and compares normal stream Data and current traffic data are measured, and is judged and the same corresponding normal flow data of flow point and the current traffic data tested Error amount whether within a preset range, if it is not, then normal flow data corresponding with current test flow point is passed through WIFI Communication module is sent to ultrasonic wave gas meter to be calibrated to calibrate to ultrasonic wave gas meter to be calibrated;If not, determining that Ultrasonic wave gas meter to be calibrated is in currently test flow point without calibration out, it can be seen that, using this calibration method, can pass through The current traffic data of each flow point of ultrasonic wave gas meter to be calibrated is transmitted to master control upper computer by WIFI communication module, then The error amount between analyses and comparison current traffic data and normal flow data is removed using master control upper computer, and then is realized to super The calibration problem of sound wave gas meter, flow meter, and calibration efficiency and precision are higher.
Those skilled in the art will readily occur to its of the application after considering specification and practicing application disclosed herein His embodiment.This application is intended to cover any variations, uses, or adaptations of the application, these modifications, purposes or Person's adaptive change follow the general principle of the application and include common knowledge in the art disclosed in the present application or Conventional techniques.Description and embodiments are considered only as exemplary, and the just true range of the application is pointed out by claim.
It should be understood that the application is not limited to the precise structure that has been described above and shown in the drawings, and And various modifications and changes may be made without departing from the scope thereof.Above-described the application embodiment is not constituted to this Shen Please protection scope restriction.

Claims (7)

1. a kind of ultrasonic wave gas meter calibration system based on WIFI communication characterized by comprising
Standard testing platform, be installed on ultrasonic wave gas meter to be calibrated control panel WIFI communication module and master control upper computer;
The master control upper computer is communicated to connect with the WIFI communication module and the standard testing platform respectively, described for receiving The normal flow data and fired for receiving the ultrasonic wave to be calibrated by the WIFI communication module that standard testing platform provides The current traffic data of gas meter, and the error amount of the analyse and compare normal flow data and the current traffic data is to institute Ultrasonic wave gas meter to be calibrated is stated to be calibrated automatically.
2. the ultrasonic wave gas meter calibration system according to claim 1 based on WIFI communication, which is characterized in that the control Making sheet is equipped with the main control chip of the ultrasonic wave gas meter to be calibrated, and the main control chip and the WIFI communication module connect It connects.
3. the ultrasonic wave gas meter calibration system according to claim 1 based on WIFI communication, which is characterized in that the mark Quasi- testboard is connect by RS485 interface with the master control upper computer.
4. according to claim 1 to the ultrasonic wave gas meter calibration system based on WIFI communication described in 3 any one, feature It is, further includes:
The alarm module being connect with the master control upper computer.
5. the ultrasonic wave gas meter calibration system according to claim 4 based on WIFI communication, which is characterized in that the report Alert module is buzzer and/or indicator light.
6. a kind of ultrasonic wave gas meter calibration method based on WIFI communication, based on base described in claim 1 to 5 any one In the ultrasonic wave gas meter calibration system of WIFI communication characterized by comprising
Receive the normal flow data that standard testing platform provides and the normal flow data that ultrasonic wave gas meter to be calibrated provides;
The normal flow data of analysing and comparing and the current traffic data, and judge institute corresponding with same test flow point Whether within a preset range to state the error amount of normal flow data and the current traffic data;
If it is not, then the normal flow data corresponding with current test flow point by WIFI communication module is sent to institute Ultrasonic wave gas meter to be calibrated is stated to calibrate to the ultrasonic wave gas meter to be calibrated;
If it is, determining the ultrasonic wave gas meter to be calibrated in the current test flow point without calibration.
7. the ultrasonic wave gas meter calibration method according to claim 6 based on WIFI communication, which is characterized in that described Before the normal flow data that the offer of standard testing platform is provided, further includes:
It is standard testing platform setting test flow point so that the standard testing platform is carried out according to setting means by serial ports Work.
CN201910248349.XA 2019-03-29 2019-03-29 A kind of ultrasonic wave gas meter calibration system and method based on WIFI communication Pending CN109827642A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910248349.XA CN109827642A (en) 2019-03-29 2019-03-29 A kind of ultrasonic wave gas meter calibration system and method based on WIFI communication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910248349.XA CN109827642A (en) 2019-03-29 2019-03-29 A kind of ultrasonic wave gas meter calibration system and method based on WIFI communication

Publications (1)

Publication Number Publication Date
CN109827642A true CN109827642A (en) 2019-05-31

Family

ID=66874527

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910248349.XA Pending CN109827642A (en) 2019-03-29 2019-03-29 A kind of ultrasonic wave gas meter calibration system and method based on WIFI communication

Country Status (1)

Country Link
CN (1) CN109827642A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114935388A (en) * 2022-07-26 2022-08-23 成都千嘉科技股份有限公司 Correction system and method for ultrasonic gas meter

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101776916A (en) * 2010-02-09 2010-07-14 浙江大学 Sewage level sensor fault instant diagnosing, alarming and switching device
CN203551051U (en) * 2013-11-04 2014-04-16 浙江威星智能仪表股份有限公司 Error correction device of ultrasonic wave gas meter
CN104677467A (en) * 2013-11-26 2015-06-03 西安大昱光电科技有限公司 Novel high-precision intelligent gas meter
CN105509846A (en) * 2016-02-26 2016-04-20 成都千嘉科技有限公司 Electronic gas meter calibration device and method
CN105526998A (en) * 2016-02-26 2016-04-27 成都千嘉科技有限公司 Communication-based electronic gas meter detection device and method
CN205262553U (en) * 2015-05-22 2016-05-25 重庆川仪自动化股份有限公司 Liquid ultrasonic flowmeter's detecting system
CN106289459A (en) * 2016-08-02 2017-01-04 成都千嘉科技有限公司 Ultrasonic wave gas flow-meter dot factor correcting unit and method
CN206161121U (en) * 2016-11-08 2017-05-10 苏州阿特斯阳光电力科技有限公司 A on -line measuring device for flowmeter
CN106840322A (en) * 2016-12-21 2017-06-13 潍坊市计量测试所 A kind of method of the online soft alignment of measurement instrument and the device for realizing the method
CN107314786A (en) * 2017-08-31 2017-11-03 南京中科乾安智能科技有限公司 Transducer calibration device systems and method
EP3404377A2 (en) * 2017-02-03 2018-11-21 Dresser, Inc. Modular apparatus for testing gas meters
CN109520594A (en) * 2018-12-27 2019-03-26 浙江蓝宝石仪表科技有限公司 A kind of the ultrasonic wave gas meter measuring device and bearing calibration of energy automatic error correction

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101776916A (en) * 2010-02-09 2010-07-14 浙江大学 Sewage level sensor fault instant diagnosing, alarming and switching device
CN203551051U (en) * 2013-11-04 2014-04-16 浙江威星智能仪表股份有限公司 Error correction device of ultrasonic wave gas meter
CN104677467A (en) * 2013-11-26 2015-06-03 西安大昱光电科技有限公司 Novel high-precision intelligent gas meter
CN205262553U (en) * 2015-05-22 2016-05-25 重庆川仪自动化股份有限公司 Liquid ultrasonic flowmeter's detecting system
CN105509846A (en) * 2016-02-26 2016-04-20 成都千嘉科技有限公司 Electronic gas meter calibration device and method
CN105526998A (en) * 2016-02-26 2016-04-27 成都千嘉科技有限公司 Communication-based electronic gas meter detection device and method
CN106289459A (en) * 2016-08-02 2017-01-04 成都千嘉科技有限公司 Ultrasonic wave gas flow-meter dot factor correcting unit and method
CN206161121U (en) * 2016-11-08 2017-05-10 苏州阿特斯阳光电力科技有限公司 A on -line measuring device for flowmeter
CN106840322A (en) * 2016-12-21 2017-06-13 潍坊市计量测试所 A kind of method of the online soft alignment of measurement instrument and the device for realizing the method
EP3404377A2 (en) * 2017-02-03 2018-11-21 Dresser, Inc. Modular apparatus for testing gas meters
CN107314786A (en) * 2017-08-31 2017-11-03 南京中科乾安智能科技有限公司 Transducer calibration device systems and method
CN109520594A (en) * 2018-12-27 2019-03-26 浙江蓝宝石仪表科技有限公司 A kind of the ultrasonic wave gas meter measuring device and bearing calibration of energy automatic error correction

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114935388A (en) * 2022-07-26 2022-08-23 成都千嘉科技股份有限公司 Correction system and method for ultrasonic gas meter

Similar Documents

Publication Publication Date Title
CN105044637B (en) A kind of calibrating installation and calibration method for calibration vector Network Analyzer
CN100472189C (en) Flow meter type identification
CN101446505B (en) System for calibrating ultrasonic flowmeter by time difference method
US20140343883A1 (en) User Interface for Signal Integrity Network Analyzer
CN100483084C (en) Method and apparatus for calibrating flow meter
CN203132741U (en) Thermal resistance temperature transmitter calibration device
CN209745313U (en) Device for testing metering performance of metering instrument
CN109597028A (en) Robust positioning method based on arrival time under the conditions of a kind of mixing sighting distance non line of sight
CN104568078B (en) A kind of method of field calibration ground hydraulic exerciser
CN105526998A (en) Communication-based electronic gas meter detection device and method
CN110542449A (en) calibration system and calibration method of novel temperature and humidity sensor
CN106248044A (en) A kind of bridge full-bridge Multi-point deflection real-time acquisition and display system
CN109827642A (en) A kind of ultrasonic wave gas meter calibration system and method based on WIFI communication
CN206757028U (en) A kind of three-phase electric energy meter false wiring detection means
CN207798220U (en) The check device of flowmeter calibration system
CN106872790B (en) Method and system for detecting via hole loss
CN103308928B (en) Pseudo-range precision measurement system of satellite navigation signal simulator
CN104964729B (en) A kind of calibrating installation of fluid metering instrument
CN105573110B (en) The leap second detecting system and method for GNSS time synchronization system
CN106707213A (en) Digital integrated circuit standard sample chip
CN109444803A (en) A kind of automatic calibration of electric energy meter system wiring column pressure test method and device
CN110412379A (en) A kind of test method of instrument function response time
CN212391150U (en) Temperature sensor precision test system
CN109323797A (en) Silicon resonance pressure sensor automatic calibration system and scaling method
CN103308930A (en) Pseudo-range precision measurement method of satellite navigation signal simulator

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
RJ01 Rejection of invention patent application after publication

Application publication date: 20190531