CN202257202U - 16-channel analog quantity data acquisition board - Google Patents
16-channel analog quantity data acquisition board Download PDFInfo
- Publication number
- CN202257202U CN202257202U CN2011202410267U CN201120241026U CN202257202U CN 202257202 U CN202257202 U CN 202257202U CN 2011202410267 U CN2011202410267 U CN 2011202410267U CN 201120241026 U CN201120241026 U CN 201120241026U CN 202257202 U CN202257202 U CN 202257202U
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- Prior art keywords
- data acquisition
- circuit
- module
- analog quantity
- microprocessor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The utility model discloses a 16-channel analog quantity data acquisition board, relating to the analog quantity data acquisition of 4 to 20mA current signal, and mainly comprising a 16-channel analog quantity input acquisition circuit, a microprocessor, an SD card storage module, a 485 communication module and an Ethernet communication module. The 16-channel analog quantity data acquisition board has the advantages that the 16-channel analog quantity data acquisition board can acquire the 4 to 20mA circuit signal of an industrial site as input and process the 4 to 20mA circuit signal; the 16-channel analog quantity data acquisition board is provided with SD card storage module which can store mass of data, thus being beneficial to looking up and analyzing the historical data; at the same time a 485 interface and an Ethernet communication interface, thus being able to connect with an upper computer; and the main advantages are high speed, high precision, high anti-jamming capability, convenience for storing the historical data, flexible use and high generality.
Description
Technical field
The utility model relates to the data collector of 4-20mA industrial standard current signal.
Background technology
Various sensors such as temperature, pressure are very common in industry spot, and the most of 4-20mA current analog amount of using of the sensor of industry spot is as transmission signals, and present data monitoring platform generally uses a computer, and it is a kind of digital device.Therefore need the analog data harvester and give computing machine as importing to gather and convert digital quantity to the 4-20mA standard signal.
But; The analog data harvester speed and the precision of prior art are lower; Do not have the design isolated holding circuit in the circuit, communication interface is less, and for the data that collect; Do not carry out real-time storage, can only use and data are passed to the mode that computing machine stores again save historical data.Therefore its use cost is high, inconvenient installation, and job insecurity, speed and precision do not reach requirement, can't analyze or analyze inconvenience to historical data.
A kind of high speed of market demand, high precision, cost is lower, dependable performance, rich interface, the analog data harvester of store historical data easily.
Summary of the invention
The utility model is intended to release a kind of 16 tunnel analog data acquisition module, and the 4-20mA current signal is sampled, and it has at a high speed, high precision, and cost is lower, working stability, rich interface, characteristics such as store historical data easily.
For this reason, the technical scheme of the utility model employing mainly is made up of following components:
16 tunnel analog quantitys input Acquisition Circuit, microprocessor, SD card memory module, 485 communication modules and interface, ethernet communication module and interface.
16 tunnel analog quantitys input Acquisition Circuit comprises 16 passage input interfaces, 16 channel linear light-coupled isolation holding circuits, A/D convertor circuit again.
Because simulated measurement input circuit has used linear optical coupling and scene to carry out insulation blocking, this has guaranteed the working stability of system.
Microprocessor is the 32-bit microprocessor of ARM kernel, and the AD conversion chip uses 16 Precision A chips at a high speed, and this has guaranteed the high speed and the high precision of system.
SD card memory module is connected with microprocessor, and it can be stored in historical data in the SD card, can the SD card be taken off during device free, takes then on the computing machine historical data to be checked and analyze.
Microprocessor can through 485 or ethernet interface equipment is linked to each other with computing machine; Show data upload to host computer; And can carry out the customization of correlation parameter, and range ability that for example can setting sensor, thus quantize for the data of each passage.
In sum; 16 tunnel analog data acquisition module of the utility model can be imported maximum 16 road 4-20mA current signals of industry spot from 16 passage input interfaces; Successively through behind 16 channel separation holding circuits and the A/D convertor circuit; To microprocessor, microprocessor is further handled and is calculated data with data acquisition.Microprocessor can also be with the data storage that collects to the SD card and upload to host computer and show.
The utility model compared with prior art; Its main advantage is: one of which; Can store various data that collect or result of calculation into the SD card; Make the user can carry out historical data analysis easily, this scheme has substituted and has used industrial computer to carry out the method for history data store simultaneously, when improving ease for use, has reduced a large amount of costs.Its two, have multiple interfaces, especially Ethernet interface is with the obvious advantage, the user can check data through the computing machine of any All-China Federation of Taiwan Compatriots net, the line parameter of going forward side by side is set and adjustment, has made things convenient for wiring, can carry out remote monitoring simultaneously.Its three because 32-bit microprocessor and 16 accuracy A D chips of using make it have high speed and high-precision characteristic.Its four, analog quantity input has designed isolation protective circuit, has improved the security and stability of entire circuit.Its five, use the form of circuit board, volume is little, can be embedded into very easily in other equipment to go.Its six, can set the range ability of each passage, use flexibly, versatility is good, and is of many uses.
Description of drawings
Fig. 1 is the circuit block diagram of the utility model.
Embodiment
Below, in conjunction with accompanying drawing, introduce the embodiment of the utility model.
As shown in Figure 1; The utility model 16 tunnel analog data acquisition module comprise 16 tunnel analog quantitys input Acquisition Circuit, power circuit, microprocessor, SD card memory module, 485 communication modules and interface, ethernet communication module and interface, real time clock circuit and power down memory module.
16 tunnel analog quantitys input Acquisition Circuit comprises 16 passage input interfaces, 16 channel linear light-coupled isolation holding circuits, A/D convertor circuit again.The 4-20mA current signal arrives the front end of isolation protective circuit through input interface, becomes voltage signal through opto-electronic conversion, and this voltage signal of A/D convertor circuit collection also changes into digital quantity and gives microcontroller and handle.Each passage of 16 passage input interfaces has three terminals, is respectively 24V, and GND and signal terminal can link to each other with three-wire system or two-wire system sensor easily.
Power circuit comprises power input interface and power supply adjusting module; The power supply adjusting module produces two power supplys of isolating mutually through DC-DC insulating power supply device and supplies with microprocessor, 16 channel separation holding circuits respectively; The input that makes like this and the power supply of microprocessor are separate; Play and prevent to disturb the effect of holding circuit.
SD card memory module links to each other with microprocessor through the SPI interface, microprocessor at set intervals with the data storage of current each passage on the SD card.Real time clock circuit is that data provide temporal information, and the power down memory module can be preserved information such as setup parameter, even the user also need not reset after power-down rebooting.
During use; Through power input interface is that circuit board provides 24V direct supply; The 4-20mA current signal of industry spot is inserted 16 passage input interfaces; Insert the SD card at SD card place, and through 485 or Ethernet interface equipment is linked to each other with host computer, in the setting of the enterprising line correlation parameter of host computer.After the operate as normal, microprocessor is gathered the data of each passage and is handled.After gathering a period of time, can the SD card be taken out, on computers the historical data that is stored in the inside checked then, analyze operations such as printing.
The above only is the preferable embodiment of the utility model, is not the restriction to the utility model.The technician of the industry; Under the inspiration of this programme; Can make some distortion and revise, every any modification, variation and modification of above embodiment being done according to the technical spirit of the utility model all still belongs in the scope of the utility model technical scheme.
Claims (3)
1.16 the road analog data acquisition module is characterized in that: comprise 16 tunnel analog quantitys input Acquisition Circuit, power circuit, microprocessor, SD card memory module, 485 communication modules and interface, ethernet communication module and interface, real time clock circuit and power down memory module; 16 tunnel analog quantitys input Acquisition Circuit comprises 16 passage input interfaces, 16 channel separation holding circuits, A/D convertor circuit again; Wherein microprocessor links to each other with A/D convertor circuit, SD card memory module, 485 communication modules, ethernet communication module respectively; 485 are used for being connected with host computer with the ethernet communication module, carry out the demonstration of data and the setting of correlation parameter.
2. 16 tunnel analog data acquisition module according to claim 1 is characterized in that: said SD card memory module is used for data and the result of calculation that storage of collected obtains.
3. 16 tunnel analog data acquisition module according to claim 1; It is characterized in that: said power circuit comprises power input interface and power supply adjusting module, and the power supply adjusting module produces two power supplys of isolating mutually and supplies with microprocessor, 16 channel separation holding circuits respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202410267U CN202257202U (en) | 2011-07-11 | 2011-07-11 | 16-channel analog quantity data acquisition board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202410267U CN202257202U (en) | 2011-07-11 | 2011-07-11 | 16-channel analog quantity data acquisition board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202257202U true CN202257202U (en) | 2012-05-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202410267U Expired - Fee Related CN202257202U (en) | 2011-07-11 | 2011-07-11 | 16-channel analog quantity data acquisition board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202257202U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854835A (en) * | 2012-09-14 | 2013-01-02 | 宝鸡石油机械有限责任公司 | PLC (Programmable Logic controller)-based digital signal collection board card with isolation function |
| CN103279100A (en) * | 2013-05-17 | 2013-09-04 | 浙江正泰中自控制工程有限公司 | Universal signal conditioning module |
| CN107395203A (en) * | 2017-07-17 | 2017-11-24 | 成都普诺科技有限公司 | 16 passage AD acquisition and memory systems |
-
2011
- 2011-07-11 CN CN2011202410267U patent/CN202257202U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854835A (en) * | 2012-09-14 | 2013-01-02 | 宝鸡石油机械有限责任公司 | PLC (Programmable Logic controller)-based digital signal collection board card with isolation function |
| CN103279100A (en) * | 2013-05-17 | 2013-09-04 | 浙江正泰中自控制工程有限公司 | Universal signal conditioning module |
| CN107395203A (en) * | 2017-07-17 | 2017-11-24 | 成都普诺科技有限公司 | 16 passage AD acquisition and memory systems |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Tianjin Hardware Automation Technology Co.,Ltd. Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Tianjin Hardware Automation Technology Co.,Ltd. Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20140711 |
|
| EXPY | Termination of patent right or utility model |