CN201255767Y - Electric conductance meter calibration system based on virtual instrument technique - Google Patents
Electric conductance meter calibration system based on virtual instrument technique Download PDFInfo
- Publication number
- CN201255767Y CN201255767Y CNU2008201646891U CN200820164689U CN201255767Y CN 201255767 Y CN201255767 Y CN 201255767Y CN U2008201646891 U CNU2008201646891 U CN U2008201646891U CN 200820164689 U CN200820164689 U CN 200820164689U CN 201255767 Y CN201255767 Y CN 201255767Y
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- conductivity meter
- serial communication
- liquid crystal
- virtual instrument
- verification system
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000004891 communication Methods 0.000 claims abstract description 18
- 238000012795 verification Methods 0.000 claims abstract description 12
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 10
- 238000002955 isolation Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012086 standard solution Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model discloses a conductivity meter verification system based on virtual instrument technique, wherein a single chip is respectively connected with a photoelectric coupler isolator, a voltage follower, a RS485 serial communication module, a temperature compensation module, press keys, a liquid crystal drive circuit and a RS232 serial communication module. The photoelectric coupler isolator is connected with a relay, a standard conductivity output module and a conductivity meter; the voltage follower is connected with an analogue current input interface and the conductivity meter; the RS485 serial communication module is connected with the conductivity meter; the liquid crystal drive circuit is connected with a liquid crystal display; and the RS232 serial communication module is connected with a computer. The conductivity meter verification system comprises two parts, wherein a slave computer realizes two functions as that: 1, according to the information output by a host computer, the slave computer selects precision resistance; 2, the slave computer processes and transmits the analogue feedback quantity of the conductivity meter; and a host computer realizes two functions as that 1, the host computer provides a virtual interface for selecting standard resistor; 2, the host computer receives the feedback signals of the slave computer, to automatically record the signals and process data.
Description
Technical field
The utility model relates to microelectronics and microcomputer technology, relates in particular to a kind of conductivity meter verification system based on virtual instrument technique.
Background technology
On market, the conductance cell of certain size is used in the correction of conductivity meter mostly at present, mixes titer then and proofreaies and correct.If adopt this method,, need prepare several different titers for different conductivity meters.And the electricity of titer is led and can be changed along with the variation of time.Another kind method is to come alternate standard solution with precision resistance of standard precision resistance case output, and this method needn't configuration standard solution, and resistance is subjected to Temperature Influence littler than solution.But lead the defeated reading that need manually regulate and write down conductivity meter for the electricity of different calibration points, carry out the error analysis of data again, provide probation redport etc.。
Summary of the invention
The purpose of this utility model provides a kind of conductivity meter verification system based on virtual instrument technique.
Based on the single-chip microcomputer in the conductivity meter verification system of virtual instrument technique respectively with the photoelectric coupler isolation device, voltage follower, the RS485 serial communication modular, temperature compensation module, button, liquid crystal display drive circuit, the RS232 serial communication modular is connected; The photoelectric coupler isolation device is led output module with relay, standard electric, conductivity meter is connected, voltage follower is connected with analog current input interface, conductivity meter, the RS485 serial communication modular is connected with conductivity meter, liquid crystal display drive circuit is connected with LCDs, and the RS232 serial communication modular is connected and is connected with computing machine.
Described standard electric is led output module and is led the output module unit by a plurality of standard electric and form, and standard electric is led the output module unit and comprised photoelectrical coupler, relay and 5/10000ths accurate wire resistors that are connected.
Described temperature compensation module adopts 5/10000ths accurate wire resistor.
Calibrating function of the present utility model is divided into two parts, and first is the slave computer part, mainly realizes two functions.At first, the electric conductivity value of the calibration point that provides according to host computer is selected corresponding precision resistance and output automatically; Secondly, handle, transmit to host computer again for the analog feedback amount of conductivity meter.Second portion is an epigynous computer section, mainly realizes two functions.At first,, provide a virtual interface, can select different measuring resistances, and order is transferred to slave computer according to user's needs.Secondly, accept the feedback signal of slave computer, carry out record automatically, and carry out some basic data processing.Compare new method hommization more, intellectuality with classic method.
Description of drawings
Fig. 1 is based on the conductivity meter verification system circuit block diagram of virtual instrument technique;
Fig. 2 is that standard electric of the present utility model is led the output module block diagram;
Fig. 3 is a software flow pattern of the present utility model.
Embodiment
As shown in Figure 1, be core with the single-chip microcomputer based on the conductivity meter verification system of virtual instrument technique, single-chip microcomputer wherein respectively with the photoelectric coupler isolation device, voltage follower, RS485 serial communication modular, temperature compensation module, button, liquid crystal display drive circuit, the RS232 serial communication modular is connected; The photoelectric coupler isolation device is led output module with relay, standard electric, conductivity meter is connected, voltage follower is connected with analog current input interface, conductivity meter, the RS485 serial communication modular is connected with conductivity meter, liquid crystal display drive circuit is connected with LCDs, and the RS232 serial communication modular is connected and is connected with computing machine.Temperature compensation module adopts 5/10000ths accurate wire resistor.
Button, liquid crystal realize and tester's interactive function that as the external interface of system the tester can finish the flow process of whole test according to the indication on the LCD screen, also can import data on LCD screen by button simultaneously; Human-computer interaction function is realized at the virtual instrument interface of software programming, and the tester can finish verification process by the control of this interface realization to system equally; Serial communication modular is finished the information transmission of host computer and system, has the function of communication with it for the conductivity meter system with RS-485 output interface in addition.
As shown in Figure 2, standard electric is led output module and is led the output module unit by a plurality of standard electric and form, and standard electric is led the output module unit and comprised photoelectrical coupler, relay and 5/10000ths accurate wire resistors that are connected.The resistance of resistance is led according to the standard electric of the test point of required calibrating and is decided, and selects different relays earlier by single-chip microcomputer, thereby reaches the purpose of certain resistance of gating, and the resistance in the designing requirement has 26.
Claims (3)
1, a kind of conductivity meter verification system based on virtual instrument technique, it is characterized in that single-chip microcomputer respectively with photoelectric coupler isolation device, voltage follower, the RS485 serial communication modular, temperature compensation module, button, liquid crystal display drive circuit, the RS232 serial communication modular is connected; The photoelectric coupler isolation device is led output module with relay, standard electric, conductivity meter is connected, voltage follower is connected with analog current input interface, conductivity meter, the RS485 serial communication modular is connected with conductivity meter, liquid crystal display drive circuit is connected with LCDs, and the RS232 serial communication modular is connected and is connected with computing machine.
2, a kind of conductivity meter verification system according to claim 1 based on virtual instrument technique, it is characterized in that described standard electric leads output module and lead the output module unit by a plurality of standard electric and form, standard electric is led the output module unit and is comprised photoelectrical coupler, relay and 5/10000ths accurate wire resistors that are connected.
3, a kind of conductivity meter verification system based on virtual instrument technique according to claim 1 is characterized in that described temperature compensation module adopts 5/10000ths accurate wire resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201646891U CN201255767Y (en) | 2008-09-12 | 2008-09-12 | Electric conductance meter calibration system based on virtual instrument technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201646891U CN201255767Y (en) | 2008-09-12 | 2008-09-12 | Electric conductance meter calibration system based on virtual instrument technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201255767Y true CN201255767Y (en) | 2009-06-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201646891U Expired - Fee Related CN201255767Y (en) | 2008-09-12 | 2008-09-12 | Electric conductance meter calibration system based on virtual instrument technique |
Country Status (1)
| Country | Link |
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| CN (1) | CN201255767Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101813656A (en) * | 2010-04-19 | 2010-08-25 | 中国兵器工业集团第五三研究所 | Method and equipment for automatic calibration of oil conductivity meter |
| CN103293506A (en) * | 2013-06-13 | 2013-09-11 | 爱德森（厦门）电子有限公司 | Achieving method for conductivity measurement instrument without detecting front test block calibration |
| CN106405461A (en) * | 2016-08-26 | 2017-02-15 | 江苏华伦化工有限公司 | Conductivity instrument verification method |
-
2008
- 2008-09-12 CN CNU2008201646891U patent/CN201255767Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101813656A (en) * | 2010-04-19 | 2010-08-25 | 中国兵器工业集团第五三研究所 | Method and equipment for automatic calibration of oil conductivity meter |
| CN101813656B (en) * | 2010-04-19 | 2013-07-17 | 中国兵器工业集团第五三研究所 | Method and equipment for automatic calibration of oil conductivity meter |
| CN103293506A (en) * | 2013-06-13 | 2013-09-11 | 爱德森（厦门）电子有限公司 | Achieving method for conductivity measurement instrument without detecting front test block calibration |
| CN106405461A (en) * | 2016-08-26 | 2017-02-15 | 江苏华伦化工有限公司 | Conductivity instrument verification method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090610 Termination date: 20110912 |