CN204286553U - The control circuit of the flow integrator field calibration device of portable multi-channel - Google Patents
The control circuit of the flow integrator field calibration device of portable multi-channel Download PDFInfo
- Publication number
- CN204286553U CN204286553U CN201420757823.4U CN201420757823U CN204286553U CN 204286553 U CN204286553 U CN 204286553U CN 201420757823 U CN201420757823 U CN 201420757823U CN 204286553 U CN204286553 U CN 204286553U
- Authority
- CN
- China
- Prior art keywords
- circuit
- output
- governor
- electrically connected
- power
- 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.)
- Active
Links
Abstract
The utility model belongs to energy measurement device technique field, particularly relate to a kind of control circuit of flow integrator field calibration device of portable multi-channel, comprise power circuit, governor circuit, input circuit and output circuit, wherein power circuit adopts isolation module cell voltage to be transformed three road insulating power supplies, carries out independently-powered respectively to three tunnel output channels.Adopt the mode of communication to realize the mutual of signal between governor circuit and output circuit, communicating circuit adopts numeral isolation communication chip ADuM1201, to reach in the output circuit of each road under the communication instruction of governor circuit fast, communication instruction is carried out decoding according to communications protocol by the CPU of output circuit, to realize different output functions.
Description
Technical field
The utility model belongs to energy measurement device circuit technical field, particularly relates to a kind of control circuit of flow integrator field calibration device of portable multi-channel.
Background technology
Flow integrator refers to by gathering the temperature and pressure transmitter signal relevant to flow, with the device of relevant calculated with mathematical model outflow (energy), is the important component part of the gas meter such as rock gas, steam.In energy crisis, current era that industrial production automation degree is more and more high, the gas meter with flow integrator is widely used the every field of industrial and agricultural production, national defense construction, scientific research foreign trade and people's lives.Rock gas and steam-flow meter, as the compulsory verification measurement instrument relating to trade settlement, can use after having to pass through legal metering validation activity assay approval.Simultaneously, gas flow Measurement accuracy improves the quality of products to departments such as machinery, oil, chemical industry, metallurgy and the accuracy of scientific data, major and immediate significance is had to the utilization ratio of economize energy, the raising energy, only have and flow is measured accurately, just can accomplish " power consumption has number, energy-conservation have certificate ".Therefore, the Research Significance of flow integrator calibrating installation is great.
At present, the power plant of most provinces, city and metering validation activity at county level and major part, chemical plant and pharmacy corporation etc. all have flow integrator calibrating installation, but ubiquity standard verification device and support equipment quantity is many, weight is large shortcoming.According to " JJG 1003-2005 flow integrator vertification regulation ", to flow integrator type evaluation, development test, first calibrating, follow-up calibrating and the following calibration equipment of inspection needs in using: standard amperemeters, standard voltmeter, universal counter, standard resistance box, multiple DC signal source, frequency of signal generator, millivolt generator, stabilized voltage supply, timer (stopwatch) etc.Configuration the said equipment, only can carry out laboratory verification, cannot by all scenes of taking, on-the-spot general method of calibration is that use two multifunctional checks add a resistance box at present, examine and determine with a stopwatch, but this mode operates the calibrating requirement that cannot meet vertification regulation.
The calibrating of flow accumulation instrument parameter divides five step operations, instantaneous delivery, integrated flux, output current, fixing quantity, compensating parameter displayed value.
Flow integrator is generally all arranged on scene, tear back the words of laboratory verification open, there is a lot of problem, increasing instrument all requires to examine and determine at the scene, there is following benefit: calibrating can better reflect the actual parameter of this instrument at the scene in environment the first, at the scene, if to install again after laboratory verification, on-the-spot, can because site environment factor cause the deviation of instrument; The second, do not need repeated removal and installation, avoid artificial damage; Three, without the need to disconnecting for a long time, only needing to disconnect joint connection in site in verification process temporarily, ensureing the normal continuities produced.
Because regulations stipulate needs to be equipped with all devices, and so many equipment is taken, scene is obviously unrealistic, and cause wiring complicated, and the synchronism that signal exports can not be ensured, particularly in calibrating integrated flux process, need to use flow signal, temperature and pressure compensating signal, three standard signals export simultaneously, routine is all carry out timing by stopwatch, is difficult to realize synchronous averaging on the one hand, on the other hand, owing to exporting continuously by three different signal sources at present, be difficult to read last cumulative flow value after timing terminates.
Utility model content
The purpose of this utility model is the control circuit of the flow integrator field calibration device providing a kind of portable multi-channel for the deficiencies in the prior art.
For achieving the above object, the utility model adopts following technical scheme: a kind of control circuit of flow integrator field calibration device of portable multi-channel, comprise power circuit, governor circuit, input circuit and output circuit, described power circuit connects described governor circuit respectively, described input circuit and described output circuit, for described governor circuit, described input circuit and described output circuit are powered, described power circuit adopts isolation module cell voltage to be transformed three road insulating power supplies, carry out independently-powered to three tunnel output channels respectively, insulating power supply described in three tunnels is converted to each road power supply needed for circuit by switch chip respectively again.
Described power circuit comprises the power circuit providing the supply module of positive-negative power, D/A change-over circuit, A/D change-over circuit and host CPU to power to the operational amplifier adopted in circuit and analog switch chip.
Also comprise battery charge controlling chip in described power circuit, described battery charge controlling chip crus secunda is a charging control end, and described charging control end is connected with described governor circuit.
Insulating power supply described in three tunnels adopts heavy-duty diode to carry out independent control to insulating power supply described in every road respectively.
Described output circuit is provided with three tunnels, output circuit described in every road includes and exports governor circuit, D/A change-over circuit, output signal conditioning circuit and output signal selective circuit of measuring range, the output terminal of described output governor circuit is electrically connected with the input end of described D/A change-over circuit, the output terminal of described D/A change-over circuit is electrically connected with the input end of described output signal conditioning circuit, and the output terminal of described output signal conditioning circuit is electrically connected with described output signal selective circuit of measuring range.
Described governor circuit comprises signal sampling selective circuit of measuring range, sampled signal modulate circuit, A/D change-over circuit, measure governor circuit, key circuit and display circuit, the output terminal of described signal sampling selective circuit of measuring range is electrically connected with the input end of described sampled signal modulate circuit, the output terminal of described sampled signal modulate circuit is electrically connected with the input end of described A/D change-over circuit, the output terminal of described A/D change-over circuit is electrically connected with the input end of described measurement governor circuit, the output terminal of described measurement governor circuit is electrically connected with described display circuit, the output terminal of described key circuit is electrically connected with the input end of described measurement governor circuit.
The beneficial effect of control circuit of the present utility model: power circuit of the present utility model adopts isolation module cell voltage to be transformed three road insulating power supplies, carry out independently-powered to three tunnel output channels respectively, insulating power supply described in three tunnels is converted to each road power supply needed for circuit by switch chip respectively again, so be adopt the mode of communication to realize the mutual of signal between governor circuit and output circuit, communicating circuit adopts numeral isolation communication chip ADuM1201, to reach in the output circuit of each road under the communication instruction of governor circuit fast, communication instruction is carried out decoding according to communications protocol by the CPU of output circuit, to realize different output functions.
Accompanying drawing explanation
Fig. 1 is the block diagram of power circuit of the present utility model.
Fig. 2 is the block diagram of governor circuit of the present utility model.
Fig. 3 is the block diagram of output circuit of the present utility model.
Comprise at Fig. 1 to Fig. 3: 1---power circuit, 11---insulating power supply, 2---governor circuit, 21---signal sampling selective circuit of measuring range, 22---sampled signal modulate circuit, 23---A/D change-over circuit, 24---measure governor circuit, 25---key circuit, 26---display circuit, 3---output circuit, 31---export governor circuit, 32---D/A change-over circuit, 33---output signal conditioning circuit, 34---output signal selective circuit of measuring range.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
The utility model provides a kind of flow integrator device for on-site calibration of portable multi-channel, comprises the frequency of signal generator be integrated in housing, platform impulse meter, two DC current signal sources, DC resistance box, timer, digital electronic ammeter and voltage tables.
See Fig. 1 to Fig. 3, the utility model also provides a kind of control circuit of flow integrator field calibration device of portable multi-channel, comprise power circuit 1, governor circuit 2, input circuit (not shown in FIG.) and output circuit 3, power circuit 1 connects governor circuit 2 respectively, input circuit and output circuit 3, for governor circuit 2, input circuit and output circuit 3 are powered, power circuit 1 adopts isolation module cell voltage to be transformed three road insulating power supplies 11, carry out independently-powered to three tunnel output channels respectively, three road insulating power supplies 11 are converted to each road power supply needed for circuit by switch chip respectively again.
Power circuit 1 comprises the power circuit providing the supply module of positive-negative power, D/A change-over circuit, A/D change-over circuit and host CPU to power to the operational amplifier adopted in circuit and analog switch chip.Power circuit provides stable working current for instrument self.The power circuit of existing all kinds of prover (or tester) on market, by splitting power supply, realize powering to each circuit, but do not carry out mutual isolation between power supply, particularly at earth terminal, general employing situation altogether, makes to interfere with each other between power supply, have impact on output and the measurement of signal; And we are independent for guaranteeing each passage ground wire in flow integrator calibrating device, stop the mutual interference between ground wire, power circuit adopts isolation module cell voltage to be transformed the power supply of three tunnel isolation, carry out independently-powered to three tunnel output channels respectively, power supply after isolation is converted to each road power supply needed for circuit by switch chip again, this scheme can effectively for each circuit of instrument provides safety, glitch-free power supply; For the high-voltage power supply of mimic channel, of the present utility modelly have employed LTC1945 switch chip, two groups of positive-negative powers can be produced.
Also comprise battery charge controlling chip in power circuit 1, battery charge controlling chip crus secunda is a charging control end, and charging control end is connected with governor circuit 2, facilitates governor circuit to monitor charged state, and shows charged state on the display device.When chip crus secunda is low level, battery is in charged state, by Dynamic Announce battery icon on display device; After charging complete, chip crus secunda will become high level, will cancel Dynamic Announce battery icon after governor circuit 2 monitors, and show actual battery electricity; The utility model adopts this scheme, be consider user when with or lose the power supply adaptor of standard configuration, still to charge with power supply adaptor general on market, and need not depot repair; Meanwhile, because LTC1731 input voltage is higher, will greatly promote the applicability of power supply adaptor.
Three road insulating power supplies 11 adopt heavy-duty diode to carry out independent control to insulating power supply described in every road respectively.When user only needs a road wherein or two tunnels just can reach the requirement of calibration, the passage wherein not participating in work can be closed by hand, to reach the object of saving power consumption.
Output circuit 3 is provided with three tunnels, every road output circuit includes and exports governor circuit 31, D/A change-over circuit 32, output signal conditioning circuit 33 and output signal selective circuit of measuring range 34, the output terminal exporting governor circuit 31 is electrically connected with the input end of D/A change-over circuit 32, the output terminal of D/A change-over circuit 32 is electrically connected with the input end of output signal conditioning circuit 33, and the output terminal of output signal conditioning circuit 33 is electrically connected with output signal selective circuit of measuring range 34.Decoding is carried out in the instruction that governor circuit passes down by output CPU, and according to communications protocol, the result after decoding is carried out digitized processing, and digitized signal is sent to D/A change-over circuit, is converted into simulating signal, and carries out signal condition according to the size of signal; Exporting CPU to open exporting according to different ranges in output signal measurement range selection electricity, exporting the signal after conditioning to socket port.
Governor circuit 2 comprises signal sampling selective circuit of measuring range 21, sampled signal modulate circuit 22, A/D change-over circuit 23, measure governor circuit 24, key circuit 25 and display circuit 26, the output terminal of signal sampling selective circuit of measuring range 21 is electrically connected with the input end of sampled signal modulate circuit 22, the output terminal of sampled signal modulate circuit 22 is electrically connected with the input end of A/D change-over circuit 23, the output terminal of A/D change-over circuit 23 is electrically connected with the input end measuring governor circuit 24, the output terminal measuring governor circuit 24 is electrically connected with display circuit 26, the output terminal of key circuit 25 is electrically connected with the input end measuring governor circuit 24.All people's machine exchanges and interface display realizes all in this circuit arrangement, takes on the function of whole flow integrator calibrating device brain.In metering circuit, decoding is carried out in the instruction that user keys in, and show accordingly at display device, meanwhile, the correlation function after decoding is carried out task matching, be transported in each output channel.
Operate as exported passage 1 in the utility model, please the p-wire of standard configuration is inserted output 1 jack, jack adopts aviation socket, has positive-negative polarity guiding groove; Press F1 key and current operating state is set to passage 1, press F1 key admission passage 1 again and interface is set, need to enter in output range hurdle according to reality of work and select concrete output range, and the functions such as stepping, slope and number percent are arranged can be selected in function choosing-item hurdle, after exiting by interface prompt interface be set, numerical key can be pressed at main working interface and key in concrete output signal, export by acknowledgement key.Concrete operations can with reference to service manual.
Operate as exported passage 2 in the utility model, please the p-wire of standard configuration is inserted output 2 jack, jack adopts aviation socket, has positive-negative polarity guiding groove; Press F2 key and current operating state is set to passage 2, press F2 key admission passage 2 again and interface is set, need to enter in output range hurdle according to reality of work and select concrete output range, and the functions such as stepping, slope and number percent are arranged can be selected in function choosing-item hurdle, after exiting by interface prompt interface be set, numerical key can be pressed at main working interface and key in concrete output signal, export by acknowledgement key.Concrete operations can with reference to service manual.
Operate as exported passage 3 in the utility model, please the p-wire of standard configuration is inserted output 3 jack, jack adopts aviation socket, has positive-negative polarity guiding groove; Press F3 key and current operating state is set to passage 3, press F3 key admission passage 3 again and interface is set, need to enter in output range hurdle according to reality of work and select concrete output range, and the functions such as stepping, slope and number percent are arranged can be selected in function choosing-item hurdle, after exiting by interface prompt interface be set, numerical key can be pressed at main working interface and key in concrete output signal, export by acknowledgement key.Concrete operations can with reference to service manual.
As operated Measurement channel in the utility model, please inserted by the p-wire of standard configuration and measure jack, jack adopts aviation socket, has positive-negative polarity guiding groove; Press F4 key and current operating state is set to Measurement channel, press F4 key again to enter Measurement channel and arrange interface, need to enter to measure in range hurdle according to reality of work and select concrete measurement range, and the function such as maximum/minimum/average and number percent can be selected in function choosing-item hurdle to arrange, after exiting by interface prompt interface is set, concrete external input signal can be measured at main working interface.Concrete operations can with reference to service manual.
In the utility model, all output functions and measurement function correct in laboratory at the Shi Douxu that dispatches from the factory, and just can dispatch from the factory when meeting precision index; User side carries out correction and only has the mandate of acquisition producer just can carry out; In instrument master menu, select calibration function hurdle, key in and correct password, instrument display interface will show every calibration function menu, select different correction channels and the range section that need correct can realize correction.
The described correction for output signal, Current standards meter reading only need be keyed in by correction personnel, and instrument internal correction software will calculate the correction coefficient of current correction point automatically, stored in internal storage, and after automatically correcting, result real-time follow-up exports, and checks correction result to facilitate.
The described correction for measuring-signal, the data of the standard signal of current input only need be keyed in field in current display interface by correction personnel, after acknowledgement key, instrument internal correction software will automatically calculate the correction coefficient of current correction point and preserve stored in same portion storer, correction coefficient comes into force immediately, real-time follow-up compensates measuring-signal at that time, checks measurement update result to facilitate.
The announcement of book and instruction according to the above description, the utility model those skilled in the art can also change above-mentioned embodiment and revise.Therefore, the utility model is not limited to above-mentioned embodiment, and any apparent improvement of every those skilled in the art done by basis of the present utility model, replacement or modification all belong to protection domain of the present utility model.In addition, although employ some specific terms in this instructions, these terms just for convenience of description, do not form any restriction to the utility model.
Claims (6)
1. the control circuit of the flow integrator field calibration device of portable multi-channel, comprise power circuit, governor circuit, input circuit and output circuit, described power circuit connects described governor circuit respectively, described input circuit and described output circuit, for described governor circuit, described input circuit and described output circuit are powered, it is characterized in that: described power circuit adopts isolation module cell voltage to be transformed three road insulating power supplies, carry out independently-powered to three tunnel output channels respectively, insulating power supply described in three tunnels is converted to each road power supply needed for circuit by switch chip respectively again.
2. the control circuit of the flow integrator field calibration device of portable multi-channel according to claim 1, is characterized in that: described power circuit comprises the power circuit providing the supply module of positive-negative power, D/A change-over circuit, A/D change-over circuit and host CPU to power to the operational amplifier adopted in circuit and analog switch chip.
3. the control circuit of the flow integrator field calibration device of portable multi-channel according to claim 1, it is characterized in that: in described power circuit, also comprise battery charge controlling chip, described battery charge controlling chip crus secunda is a charging control end, and described charging control end is connected with described governor circuit.
4. the control circuit of the flow integrator field calibration device of portable multi-channel according to claim 1, is characterized in that: insulating power supply described in three tunnels adopts heavy-duty diode to carry out independent control to insulating power supply described in every road respectively.
5. the control circuit of the flow integrator field calibration device of portable multi-channel according to claim 1, it is characterized in that: described output circuit is provided with three tunnels, described in every road, output circuit includes output governor circuit, D/A change-over circuit, output signal conditioning circuit and output signal selective circuit of measuring range, the output terminal of described output governor circuit is electrically connected with the input end of described D/A change-over circuit, the output terminal of described D/A change-over circuit is electrically connected with the input end of described output signal conditioning circuit, the output terminal of described output signal conditioning circuit is electrically connected with described output signal selective circuit of measuring range.
6. the control circuit of the flow integrator field calibration device of portable multi-channel according to claim 1, it is characterized in that: described governor circuit comprises signal sampling selective circuit of measuring range, sampled signal modulate circuit, A/D change-over circuit, measure governor circuit, key circuit and display circuit, the output terminal of described signal sampling selective circuit of measuring range is electrically connected with the input end of described sampled signal modulate circuit, the output terminal of described sampled signal modulate circuit is electrically connected with the input end of described A/D change-over circuit, the output terminal of described A/D change-over circuit is electrically connected with the input end of described measurement governor circuit, the output terminal of described measurement governor circuit is electrically connected with described display circuit, the output terminal of described key circuit is electrically connected with the input end of described measurement governor circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420757823.4U CN204286553U (en) | 2014-12-03 | 2014-12-03 | The control circuit of the flow integrator field calibration device of portable multi-channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420757823.4U CN204286553U (en) | 2014-12-03 | 2014-12-03 | The control circuit of the flow integrator field calibration device of portable multi-channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204286553U true CN204286553U (en) | 2015-04-22 |
Family
ID=52869703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420757823.4U Active CN204286553U (en) | 2014-12-03 | 2014-12-03 | The control circuit of the flow integrator field calibration device of portable multi-channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204286553U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106980297A (en) * | 2017-05-15 | 2017-07-25 | 北京康斯特仪表科技股份有限公司 | Multi-path pressure data acquisition circuit and multi-path pressure data collecting system |
-
2014
- 2014-12-03 CN CN201420757823.4U patent/CN204286553U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106980297A (en) * | 2017-05-15 | 2017-07-25 | 北京康斯特仪表科技股份有限公司 | Multi-path pressure data acquisition circuit and multi-path pressure data collecting system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206657065U (en) | A kind of portable charging pile calibrating installation | |
| CN102749549A (en) | Intelligent checking system for substation alternating current voltage secondary circuit | |
| CN204177956U (en) | A kind of single-phase intelligent electric energy meter verifying attachment | |
| CN103257277B (en) | Multifunctional virtual instrument based on constant flow source and control method | |
| CN103185848A (en) | Practical simulation test system for full-station system of digital intelligent transformer substation | |
| KR101174254B1 (en) | Meter Data Management System for Smart Grid | |
| CN101408594A (en) | Device suitable for monitoring direct-current power supply ripple coefficient | |
| CN201311485Y (en) | Ripple factor detecting device adapted to DC power supply | |
| CN201540366U (en) | Three-phase harmonic standard calibration and verification device | |
| CN204286553U (en) | The control circuit of the flow integrator field calibration device of portable multi-channel | |
| CN213689799U (en) | Alternating current-direct current fills electric pile integration testing platform | |
| CN204389614U (en) | A kind of portable multi-function energy efficiency monitor | |
| CN203054208U (en) | Automatic inspection system of voltage monitor | |
| CN205608103U (en) | Portable electric energy quality monitoring appearance of full touch screen | |
| CN106970263A (en) | The efficiency metering system and metering method of a kind of electric vehicle alternating-current charging pile | |
| CN110703180A (en) | Multi-mode intelligent substation simulation system and method | |
| CN105890718B (en) | Portable multi-channel flow integrating instrument field calibrator and control circuit thereof | |
| CN205353209U (en) | A testboard for measuring warhead resistance | |
| CN205720467U (en) | A kind of distributing automation apparatus comprehensive tester | |
| CN206531951U (en) | Single-phase electric energy meter with fault simulating function | |
| CN206557369U (en) | High-voltage electric-energy meter on-line monitoring system based on carrier communication | |
| CN211123230U (en) | Portable automatic debugging system for calibrator | |
| CN102081152A (en) | Calibration device and method for out-of-band accessory direct-current electric energy meter | |
| CN202693781U (en) | Intelligent electric energy meter calibrating device for power grid | |
| CN112285477A (en) | Integrated detection platform for AC/DC charging pile and field detection method for charging pile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |