CN107367293A - A kind of current-output type transmitters sense method and its system - Google Patents
A kind of current-output type transmitters sense method and its system Download PDFInfo
- Publication number
- CN107367293A CN107367293A CN201710801012.8A CN201710801012A CN107367293A CN 107367293 A CN107367293 A CN 107367293A CN 201710801012 A CN201710801012 A CN 201710801012A CN 107367293 A CN107367293 A CN 107367293A
- Authority
- CN
- China
- Prior art keywords
- tested
- detection
- transmitter
- current
- power supply
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
Abstract
The invention discloses a kind of current-output type transmitters sense method and its system.On the one hand, the invention provides a kind of current-output type transmitters sense method, this method to include following processing step：Step 1：It is powered simultaneously to several tested transmitters in parallel by power supply；Step 2：One current sensing means is attached by the detection switch and each tested transmitter of setting respectively, the tested transmitter is detected with current sensing means and power supply composition Series detectors circuit；Step 3：Each tested transmitter judges whether tested transmitter is qualified after having detected, by detection actual value compared with corresponding setting detected value；Step 4：All tested transmitters are after the detection of same setting detected value is completed in detection process, then re-start the detection of next setting detected value.On the other hand, the invention provides a kind of current-output type transmitters sense system.Detection efficiency can effectively be improved by the present invention, save cost.
Description
Technical field
The present invention relates to transmitters sense field, more particularly to a kind of current-output type transmitters sense method, further relate to
A kind of current-output type transmitters sense system.
Background technology
Measured for industrial processes, the instrument of control, such as：Pressure transmitter, temperature transmitter, flow transmitter,
Electrical parameter transmitter etc..These instrument are that tested value is transformed to industrial standard during physical parameters measurement is carried out
Unified electric signal, generally 0~10V voltages, 1~5V voltages, 4~20mA electric currents etc..Corresponded to if pressure is 0~1MPa defeated
Go out 4~20mA electric currents, temperature is -5~55 DEG C and then corresponds to output 4~20mA electric currents, and humidity is that 0~100%RH then corresponds to output 0
~10V voltages etc..The accuracy of these measuring instrumentss is to need detection or periodic calibration.In detection, the equipment of standard produces
With the measured parameter for the standard that provides, detected instrument is allowed to be detected, output is then converted to it meets industrial standard
Electric signal measure；Error between standard of comparison parameter parameter value corresponding with the signal that tested instrument exports, can sentence
Whether coincidence measurement requires the accuracy of disconnected tested instrument.
According to measurement verification regulations specification, tested instrument should be powered time enough preheating, make its thermostabilization with reach should
There is performance, carry out detection, the calibrating link of data afterwards.But at present in existing method, ammeter can only once measure one
The electric current of transmitter；Such as to need that multiple tested instrument are carried out while detected, then need configuration identical with tested metered quantity
Ammeter；Such as there was only an ammeter, multiple tested instrument in detection state detected, then detected
Journey break current loop connect again access ammeter, broke electricity instrument need the time to stablize again.It is detected because needing to detect
The linearity index of instrument, hysteresis error etc., so as to need to set multiple parameter values in the range of tested transmitter measuring range.
If operation processing of each test point through said process, such that whole process is extremely inefficient.
The content of the invention
The purpose of the present invention one is to provide a kind of current-output type transmitters sense method, can effectively improve detection
Efficiency, save cost.
The purpose of the present invention two is to provide a kind of system for realizing this method.
To realize the purpose, there is provided a kind of current-output type transmitters sense method, this method include following processing and walked
Suddenly：
Step 1：It is powered simultaneously to several tested transmitters in parallel by power supply, so that each tested transmitter
State preheating is operated simultaneously；
Step 2：A setting detected value is provided to each tested transmitter, a current sensing means is passed through into setting respectively
Detection switch is attached with each tested transmitter, and after detection switch work corresponding to tested transmitter, the tested pick-up
The former preheating circuit of device is disconnected, while the tested transmitter is examined with current sensing means and power supply composition Series detectors circuit
Survey；
Step 3：Each tested transmitter is detected and after having detected and having disconnected successively by step 2, and detection is real
Whether actual value tested transmitter corresponding to judgement compared with corresponding setting detected value is qualified, then carries out next tested change
Send the detection of device；
Step 4：All tested transmitters are after the detection of same setting detected value is completed in detection process, then enter again
The detection of the next setting detected value of row, until detection is completed.
Preferably, each tested transmitter provides detected value by standard value equipment, and detection process Plays value is set
It is standby that adjustable detected value is provided.
Preferably, the current sensing means and standard value equipment are connected with control device progress signal, and are controlled
The detected value that device is exported by the break-make to each detection switch respectively and standard value equipment is controlled each tested so as to control
The detection of transmitter.
Preferably, the control device is by by the letter for measuring signal value and standard value equipment and providing of current sensing means
Number value is compared error in judgement whether in setting range, so as to which whether tested transmitter corresponding to judging is qualified.
Preferably, the detection switch is used to avoid corresponding in detection switch handoff procedure be detected with being provided between power supply
The capacitor of transmitter power failure.
To realize purpose two, a kind of current-output type transmitters sense system, including following device are additionally provided：
Power supply：The power supply is used to provide the stabilization and adjustable voltage or electric current for meeting detection needs to tested transmitter；
Current sensing means：The current sensing means is used to carry out signal detection to tested transmitter respectively；
Standard value equipment：The standard value equipment is used to several are detected transmitter and provided to stablize adjustable detection signal；
Detection switch：The detection switch is used to control tested transmitter to be connected with current sensing means so as to be detected；
Each tested transmitter forms power supply to each tested pick-up by being connected after being connected with corresponding detection switch with power supply
The parallel circuit that device is powered simultaneously；Described current sensing means one end is connected with power supply, and the other end connects with each detection switch respectively
Connect, Series detectors circuit is formed with each tested transmitter by each detection switch respectively so as to form a current sensing means；
The detection switch, current sensing means and power supply are connected with a control device signal respectively.
Preferably, each detection switch both ends are also parallel with the electric capacity for maintaining tested transmitter uninterrupted power supply
Device, one end of the capacitor are connected with the tie point of detection switch and tested transmitter, and the other end and detection switch and
The tie point connection of power supply.
Preferably, the detection switch is relay, wherein, one end of normally-closed contact is connected and another with tested transmitter
One end is connected with power supply, and one end of normally opened contact is connected with tested transmitter and the other end is connected with current sensing means.
Preferably, the control device is additionally provided with the touch-screen for carrying out detecting control and testing result is shown.
Preferably, the system is additionally provided with is connected to break down or be detected in the course of work to become with control device signal
Device is sent to detect the warning device of unqualified alarm.
Compared with prior art, its advantage is the present invention：
By setting a power supply to be detected transmitter progress to several while preheating in the present invention, and pass through an electricity
Flow detection device detects to each tested transmitter respectively, can effectively improve detection efficiency, saves cost.In the present invention
In, the tested transmitter of identical range is multiple while preheats and detects, so as to avoid preheating in the prior art one at a time
With the poor efficiency of detection.The frequent output adjustment of canonical parameter can be avoided by the present invention, can once export and complete multiple changes
The detection of the same magnitude test point of device is sent, so as to extend standard value service life of structure.An ammeter is in the present invention
The measurement of multiple loop currents can be completed, improves detection efficiency, while avoids the waste of resource distribution.In the present invention, lead to
Cross control device carry out detection process control to improve current-output type transmitter detection have extremely significant improved efficiency and
Economic benefit is lifted.In the present invention, by setting capacitor to ensure tested transmitter uninterrupted power supply, so as to improve detection
Precision.
Brief description of the drawings
Fig. 1 handles block diagram for method in the present invention；
Fig. 2 is system construction drawing in the present invention；
Fig. 3 is the further in-depth structure chart of system in the present invention.
Embodiment
With reference to embodiment, the invention will be further described, but does not form any limitation of the invention, any
In the modification for the limited number of time that scope of the invention as claimed is made, still in scope of the presently claimed invention.
As Figure 1-Figure 2, the invention provides a kind of current-output type transmitters sense method, this method to include following
Processing step：
Step 1：It is powered simultaneously to several tested transmitters 2 in parallel by power supply 1, so that each tested pick-up
Device 2 is operated state preheating simultaneously；
Step 2：A setting detected value is provided to each tested transmitter 2, a current sensing means 3 is passed through into setting respectively
Detection switch K be attached with each tested transmitter 2, and after detection switch K work corresponding to tested transmitter 2, the quilt
The former preheating circuit for examining transmitter 2 disconnects, while the tested transmitter 2 forms Series detectors with current sensing means 3 and power supply 1
Circuit is detected；
Step 3：Each tested transmitter 2 is detected and after having detected and having disconnected successively by step 2, and detection is real
Whether actual value tested transmitter corresponding to judgement compared with corresponding setting detected value is qualified, then carries out next tested change
Send the detection of device 2；
Step 4：All tested transmitters 2 are after the detection of same setting detected value is completed in detection process, then again
The detection of next setting detected value is carried out, until detection is completed.
In the present embodiment, for each tested transmitter 2 after the detection of a setting detected value is completed, detection switch K rebounds are former
State causes corresponding tested transmitter 2 to continue to preheat.
Each tested transmitter 2 provides detected value by standard value equipment 4, and the offer of detection process Plays value equipment 4 can
The detected value of regulation.
In the present embodiment, power supply 1 can provide stable operating voltage or electricity according to the working range of tested transmitter 2
Stream.Standard value equipment 4 is provides the equipment of corresponding standard detection signature according to the type of tested transmitter 2, such as temperature, pressure
Deng.Current sensing means 3 is ammeter.
Current sensing means 3 and standard value equipment 4 carry out signal with a control device 5 and are connected, and control device 5 passes through
The detected value that the break-make to each detection switch K and standard value equipment 4 export respectively is controlled so as to control each tested transmitter 2
Detection.Control device 5 is by the way that the signal value that measures of current sensing means 3 is carried out with the signal value that standard value equipment 4 provides
Whether multilevel iudge error is in setting range, so as to judge whether corresponding tested transmitter 2 is qualified.Detection switch K and electricity
The capacitor C for avoiding the corresponding tested power failure of transmitter 2 in detection switch K handoff procedures is provided between source 1.
In the present embodiment, each tested transmitter 2 is numbered control device 5, and to each tested correspondence of transmitter 2
Detection switch K and be numbered so that control can be in order avoid the occurrence of multiple tested transmitters 2 while examine
The problem of survey, occurs, and ensures that an only tested transmitter is by access current measuring device every time.It can lead to timed unit 5
Cross touch-screen and real-time display is carried out to the data and real data and result of detection, additionally it is possible to the data of detection are preserved,
Excel documents can be converted into and consulted with facilitating.
Present invention also offers a kind of current-output type transmitters sense system, including following device：
Power supply 1：The power supply 1 is used to provide the stabilization and adjustable voltage or electricity for meeting detection needs to tested transmitter 2
Stream；
Current sensing means 3：The current sensing means 3 is used to carry out signal detection to tested transmitter 2 respectively；
Standard value equipment 4：The standard value equipment 4 is used to several are detected transmitter 2 and provided to stablize adjustable detection letter
Number；
Detection switch K：Detection switch K is used to control tested transmitter 2 to be connected with current sensing means 3 so as to be examined
Survey；
Control device 5：The control device 5 is used to be controlled standard value equipment 4 and by the letter of current sensing means 3
Number whether error in judgement is in setting range compared with the signal that standard value equipment 4 provides, so as to tested corresponding to judging
Whether transmitter 2 is qualified；
Each tested transmitter 2 forms power supply 1 to each tested by being connected after being connected with corresponding detection switch K with power supply 1
The parallel circuit that transmitter 2 is powered simultaneously；The one end of current sensing means 3 be connected with power supply 1 other end respectively with each detection switch K
Connection, Series detectors are formed with each tested transmitter 2 by each detection switch K respectively so as to form a current sensing means 3
Circuit, control device 5 are connected with detection switch K, current sensing means 3 and the signal of power supply 1 respectively.
Each detection switch K both ends are also parallel with capacitor C, capacitor C for maintaining the tested uninterrupted power supply of transmitter 2
One end be connected with detection switch K and tested transmitter 2 tie point, and the connection of the other end and detection switch K and power supply 1
Point connection.Detection switch K is relay, wherein, one end of normally-closed contact is connected with tested transmitter 2 and the other end and power supply
1 connection, one end of normally opened contact is connected with tested transmitter 2 and the other end is connected with current sensing means 3.
Control device 5 is additionally provided with the touch-screen for carrying out detecting control and testing result is shown.The system is also set up
Have and be connected to break down in the course of work with the signal of control device 5 or tested transmitter 2 detects the report of unqualified alarm
Alarm device.
In the present embodiment, control device 5 can be computer, and capacitor C size is according to tested transmitter 2 and detection
Switch K actuation time is selected.
In the present embodiment, typically only 3 milliseconds or so of switch activity time in detection switch K handoff procedures.Electric current pair
Capacitor voltage at both ends elevation amplitude is different with capacitor C size caused by capacitor C charging, and capacitance is bigger, on
Increasing degree degree is smaller, and vice versa.The transmitter output current of industrial standard is up to 20 milliamperes.When capacitor C values are 10 micro-
More than method, 20 milliamperes of electric currents are no more than 1V in 3 milliseconds to voltage rise caused by capacitor C chargings.And tested transmitter 2
Power supply is generally the equal normal works of 10~24V.Under normal 24V power supplies, the measuring state for being detected transmitter 2 will not be because of capacitor
The rise of C both end voltages is affected, i.e., the tested working condition of transmitter 2 is not changed, and represents measured parameter size
Output current value will not produce any change in detection switch K handoff procedures because switching and switching, more will not be such as prior art
During the current loop that lower ammeter access is working, loop must be turned off.
The workflow of the present embodiment：It is powered simultaneously to several tested transmitters 2 in parallel by power supply 1, from
And make each tested transmitter 2 while be operated state preheating；After the completion of preheating, standard value equipment 4 is controlled by control device 5
The detected value set is provided, then controls corresponding detection switch K to work so that corresponding tested 2 former link circuit of transmitter
Disconnect, while tested transmitter 2, current sensing means 3 and the power supply 1 form Series detectors circuit and detected；Detection is completed
Afterwards, control device 5 controls detection switch K rebound original states so that transmitter 2 is detected corresponding to detection switch K and recovers former
The state of preheating, and control next detection switch K to work, so as to which orderly detects to each tested transmitter 2, examining
All tested transmitters 2 control standard value to set after the detection of same setting detected value is completed, then by control device 5 during survey
Standby 4 provide the detected value of next setting, then re-start the detection of next setting detected value, until detection is completed.
Detection efficiency can effectively be improved by the present invention, save cost.
It the above is only the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, do not taking off
On the premise of from structure of the present invention, several modifications and improvements can also be made, these effects implemented all without the influence present invention
And practical applicability.
Claims (10)
- A kind of 1. current-output type transmitters sense method, it is characterised in that this method includes following processing step：Step 1：It is powered simultaneously to several tested transmitters in parallel by power supply, so that each tested transmitter is simultaneously It is operated state preheating；Step 2：A setting detected value is provided to each tested transmitter, a current sensing means is passed through into the detection of setting respectively Switch is attached with each tested transmitter, and after detection switch work corresponding to tested transmitter, the tested transmitter Former preheating circuit is disconnected, while the tested transmitter is detected with current sensing means and power supply composition Series detectors circuit；Step 3：Each tested transmitter is detected and after having detected and having disconnected successively by step 2, will detect actual value It is whether qualified that transmitter is detected corresponding to judging compared with corresponding setting detected value, then carries out next tested transmitter Detection；Step 4：All tested transmitters are after the detection of same setting detected value is completed in detection process, then re-start down The detection of one setting detected value, until detection is completed.
- A kind of 2. current-output type transmitters sense method according to claim 1, it is characterised in that：Each tested change Device is sent to provide detected value by standard value equipment, and detection process Plays value equipment provides adjustable detected value.
- A kind of 3. current-output type transmitters sense method according to claim 2, it is characterised in that：The current detecting Device and standard value equipment carry out signal with a control device and are connected, and control device to each detection switch by leading to respectively The detected value of disconnected and standard value equipment output is controlled so as to control the detection of each tested transmitter.
- A kind of 4. current-output type transmitters sense method according to claim 3, it is characterised in that：The control device By by current sensing means measure signal value compared with the signal value that standard value equipment provides error in judgement whether In setting range, so as to judge whether corresponding tested transmitter is qualified.
- A kind of 5. current-output type transmitters sense method according to claim 1, it is characterised in that：The detection switch The capacitor for avoiding corresponding tested transmitter power failure in detection switch handoff procedure is provided between power supply.
- 6. a kind of current-output type transmitters sense system according to any one methods described of claim 1-5, its feature exists In, including following device：Power supply：The power supply is used to provide the stabilization and adjustable voltage or electric current for meeting detection needs to tested transmitter；Current sensing means：The current sensing means is used to carry out signal detection to tested transmitter respectively；Standard value equipment：The standard value equipment is used to several are detected transmitter and provided to stablize adjustable detection signal；Detection switch：The detection switch is used to control tested transmitter to be connected with current sensing means so as to be detected；It is same to each tested transmitter to form power supply by being connected after being connected with corresponding detection switch with power supply for each tested transmitter When the parallel circuit powered；Described current sensing means one end is connected with power supply, and the other end is connected with each detection switch respectively, from And form a current sensing means and Series detectors circuit is formed with each tested transmitter by each detection switch respectively；The inspection Slowdown monitoring switch, current sensing means and power supply are connected with a control device signal respectively.
- A kind of 7. current-output type transmitters sense system according to claim 6, it is characterised in that：Each detection is opened Pass both ends are also parallel with the capacitor for maintaining tested transmitter uninterrupted power supply, one end of the capacitor and detection switch Connected with the tie point of tested transmitter, and the other end is connected with the tie point of detection switch and power supply.
- A kind of 8. current-output type transmitters sense system according to claim 7, it is characterised in that：The detection switch For relay, wherein, one end of normally-closed contact is connected with tested transmitter and the other end is connected with power supply, and the one of normally opened contact End is connected with tested transmitter and the other end is connected with current sensing means.
- A kind of 9. current-output type transmitters sense system according to claim 6, it is characterised in that：The control device It is additionally provided with the touch-screen for carrying out detecting control and testing result is shown.
- A kind of 10. current-output type transmitters sense system according to claim 6, it is characterised in that：The system is also set It is equipped with and is connected to the report of failure or the unqualified alarm of tested transmitters sense in the course of work with control device signal Alarm device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710801012.8A CN107367293A (en) | 2017-09-07 | 2017-09-07 | A kind of current-output type transmitters sense method and its system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710801012.8A CN107367293A (en) | 2017-09-07 | 2017-09-07 | A kind of current-output type transmitters sense method and its system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107367293A true CN107367293A (en) | 2017-11-21 |
Family
ID=60311848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710801012.8A Pending CN107367293A (en) | 2017-09-07 | 2017-09-07 | A kind of current-output type transmitters sense method and its system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107367293A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487209A (en) * | 2012-06-13 | 2014-01-01 | 中国石油化工股份有限公司 | Multi-station differential pressure and pressure transmitter calibration table |
| CN104467169A (en) * | 2014-12-26 | 2015-03-25 | 深圳警翼数码科技有限公司 | Uninterruptible power supply device |
| CN204905990U (en) * | 2015-07-31 | 2015-12-23 | 国家电网公司 | Quick auto -change over device of incessant DC power supply |
| CN105656180A (en) * | 2015-04-14 | 2016-06-08 | 国家电网公司 | Standby-power-supply rapid switching system based on super capacitor |
| CN106093674A (en) * | 2016-05-31 | 2016-11-09 | 西安科技大学 | Use short circuit current self-powered electric network fault detection device and method |
| CN205987487U (en) * | 2016-07-28 | 2017-02-22 | 肥东凯利电子科技有限公司 | Mixed type linear power supply |
-
2017
- 2017-09-07 CN CN201710801012.8A patent/CN107367293A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487209A (en) * | 2012-06-13 | 2014-01-01 | 中国石油化工股份有限公司 | Multi-station differential pressure and pressure transmitter calibration table |
| CN104467169A (en) * | 2014-12-26 | 2015-03-25 | 深圳警翼数码科技有限公司 | Uninterruptible power supply device |
| CN105656180A (en) * | 2015-04-14 | 2016-06-08 | 国家电网公司 | Standby-power-supply rapid switching system based on super capacitor |
| CN204905990U (en) * | 2015-07-31 | 2015-12-23 | 国家电网公司 | Quick auto -change over device of incessant DC power supply |
| CN106093674A (en) * | 2016-05-31 | 2016-11-09 | 西安科技大学 | Use short circuit current self-powered electric network fault detection device and method |
| CN205987487U (en) * | 2016-07-28 | 2017-02-22 | 肥东凯利电子科技有限公司 | Mixed type linear power supply |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103245375B (en) | The inspection of measuring apparatus device, corresponding measuring apparatus device and check device | |
| CN201378204Y (en) | Automatic detecting and metrological characteristic analyzing device for energy meter standard devices | |
| CN108508343A (en) | A kind of detection device and method of printed circuit board | |
| CN105652852A (en) | Detection and monitoring system of high-voltage frequency converter power unit and mainboard thereof | |
| CN101561467A (en) | System and method for real-time impedance measuring | |
| CN209673956U (en) | A kind of VSC, V7 type contactor handcart state detector system | |
| CN105759147A (en) | Integrated test device for battery management system of electric vehicle | |
| CN103389427B (en) | GIS equipment operational condition online test method and system | |
| CN205176218U (en) | Micro -gap switch testing arrangement | |
| CN104931830B (en) | A kind of electronic cigarette host test jig | |
| CN112433091A (en) | Real-time detection system for power consumption of chip | |
| CN105785169A (en) | Battery system pre-charging management testing device and testing method thereof | |
| CN107942140A (en) | Detect the measuring system and detection method of satellite power supply control system interface impedance | |
| CN202421448U (en) | Relay detecting device for nuclear power stations | |
| CN205139349U (en) | Arrester discharge counter and leakage current table check gauge | |
| EP3199933B1 (en) | Load cell input unit | |
| CN104101787A (en) | Portable low-voltage reactive compensation standard detection system and detection method | |
| CN201069467Y (en) | Testing platform for battery manager | |
| CN207113916U (en) | A kind of current-output type transmitters sense system | |
| CN110907880B (en) | Calibration method of capacitance tester | |
| CN107367293A (en) | A kind of current-output type transmitters sense method and its system | |
| CN101666769A (en) | Intelligent gas sensor residual service life prediction device and method | |
| CN201561863U (en) | Data quality assurance device for mining equipment fault diagnosis | |
| CN202661588U (en) | On-line monitoring system of zinc oxide arrester | |
| CN205941773U (en) | Intelligence fuse test 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 |