CN105509955A - Pressure transmitter based on CMC processor - Google Patents
Pressure transmitter based on CMC processor Download PDFInfo
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- CN105509955A CN105509955A CN201510959461.6A CN201510959461A CN105509955A CN 105509955 A CN105509955 A CN 105509955A CN 201510959461 A CN201510959461 A CN 201510959461A CN 105509955 A CN105509955 A CN 105509955A
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- Prior art keywords
- cmc
- interface
- cmc processor
- processor
- pressure unit
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses a pressure transmitter based on a CMC processor, comprising a CMC processor, a data acquisition module, a data storage module and a display module, wherein the data acquisition module, the data storage module and the display module are connected with the CMC processor. The pressure transmitter further comprises a communication interface, an industrial Ethernet interface and a digital-to-analog conversion chip, wherein the communication interface, the industrial Ethernet interface and the digital-to-analog conversion chip are connected with the CMC processor. According to the invention, because of hardware compatibility of the CMC processor with different communication modes and the adoption of necessary peripheral circuits, the pressure transmitter based on a CMC processor is compact in structure, and runs reliably and stably. RS485 communication, Ethernet communication and analog signal output functions are integrated on an integrated communication output interface socket, which ensures convenient on-site installation and debugging.
Description
Technical field
The present invention relates to a kind of transmitter, particularly relate to a kind of pressure unit based on CMC processor.
Background technology
Pressure unit is in order to control the important original paper of industrial process and pressure change in many commercial units.Pressure signal, for measuring the liquid level of liquid, gas or steam, density and pressure, is then transformed into 4 ~ 20mADC signal and exports by pressure unit.After field bus technique rises, industrial process control system is gradually to the field bus control system future development with two-way communication and intelligent instrument control.The technical scheme that current intelligent pressure transmitter is generally taked is all that external CPU processor chips coordinate single DATA REASONING communication mode.Obtain technical support when there is the technical matters of chip-scale cumbersome, when scene needs the communication protocol changing pressure unit, the mode again changing product type can only be taked.Zhejiang Province Zhongkong Institute Co., Ltd needs independent research based on the controller chip of PLC principle according to market economy, i.e. CMC processor, may be used for the center-control calculation process of domestic situ industrial instrument, the framework of instrument and meter can be simplified, improve the integrated level of instrument and meter.
In order to better meet the market demand of pressure unit in-site measurement, and obtaining good chip technology support, needing a can simultaneously compatible RS485 communication communication with Industrial Ethernet, and possessing the pressure unit of 4mA ~ 20mA analog signal output.
Summary of the invention
The invention discloses a kind of pressure unit based on CMC processor, can communicate and ethernet communication by compatible RS485 in order to provide one simultaneously
Above-mentioned purpose of the present invention is achieved through the following technical solutions:
A kind of pressure unit based on CMC processor, wherein, comprise: a CMC processor, a data acquisition module, a data memory module, a display module, described data acquisition module, described data memory module, described display module are connected with described CMC processor; Also comprise: a communication interface, an Industrial Ethernet interface, an analog-digital chip, described communication interface, described Industrial Ethernet interface, described analog-digital chip are connected with described CMC processor.
As above based on the pressure unit of CMC processor, wherein, described communication interface, described Industrial Ethernet interface, described analog-digital chip are connected with an integrated communication interface socket.
As above based on the pressure unit of CMC processor, wherein, described data acquisition module comprises: pressure transducer, temperature sensor.
As above based on the pressure unit of CMC processor, wherein, described pressure transducer is connected with described CMC processor by an analog to digital converter.
As above based on the pressure unit of CMC processor, wherein, described communication interface is: RS485 interface chip, and described CMC processor has UART serial ports, and described CMC processor is connected with described RS485 interface chip by described UART serial ports.
As above based on the pressure unit of CMC processor, wherein, described CMC processor has SPI serial data interface, and described display module, described data memory module are connected with described SPI serial data interface.
As above based on the pressure unit of CMC processor, wherein, described CMC processor has IIC interface, and described data-carrier store is connected with described IIC interface.
As above based on the pressure unit of CMC processor, wherein, described analog-digital chip is loop service type 4mA ~ 20mA digital to analog converter.
In sum, owing to have employed technique scheme, the present invention utilizes CMC chip to the hardware compatibility of different communication mode, coordinates necessary peripheral circuit, the pressure transmitter configurations of CMC processor is simplified, reliable stable.RS485 communication and ethernet communication and analog signal output function are concentrated on described integrated communication output interface socket simultaneously, ensure that the convenient of site installation test.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the pressure unit that the present invention is based on CMC processor.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described further:
Fig. 1 is the structured flowchart of the pressure unit that the present invention is based on CMC processor, refer to Fig. 1, a kind of pressure unit based on CMC processor 1, wherein, comprise: CMC processor 1, data acquisition module, data memory module 5, display module 6, data acquisition module, data memory module 5, display module 6 are connected with CMC processor 1; Also comprise: communication interface 8, Industrial Ethernet interface 7, analog-digital chip 9, communication interface 8, Industrial Ethernet interface 7, analog-digital chip 9 are connected with CMC processor 1.
Communication interface 8 of the present invention, Industrial Ethernet interface 7, analog-digital chip 9 are connected 10 with an integrated communication interface socket.
Data acquisition module of the present invention comprises: pressure transducer 2, temperature sensor 4.
Pressure transducer 2 of the present invention is connected with CMC processor 1 by an analog to digital converter 3.Analog to digital converter 3 of the present invention is 24 ADC(analog to digital conversion) chip, further, analog to digital converter 3 can adopt LTC2410 chip.
Communication interface 8 of the present invention is: RS485 interface chip, and CMC processor 1 has UART serial ports, and CMC processor 1 is connected with RS485 interface chip by UART serial ports.
CMC processor 1 of the present invention has SPI serial data interface, and display module 6, data memory module 5 are connected with SPI serial data interface.
Display module 6 of the present invention can be LCD MODULE 6, concrete, can adopt OKIMSM5265 LCD MODULE 6.
CMC processor 1 of the present invention has IIC interface, and data-carrier store is connected with IIC interface.Data-carrier store of the present invention can adopt ferroelectric FRAM storer, and further, data-carrier store can adopt storer MB85RC16.
Analog-digital chip 9 of the present invention is loop service type 4mA ~ 20mA digital to analog converter, and further, digital to analog converter is AD5421.
Claims (8)
1. the pressure unit based on CMC processor, it is characterized in that, comprise: a CMC processor, a data acquisition module, a data memory module, a display module, described data acquisition module, described data memory module, described display module are connected with described CMC processor; Also comprise: a communication interface, an Industrial Ethernet interface, an analog-digital chip, described communication interface, described Industrial Ethernet interface, described analog-digital chip are connected with described CMC processor.
2. the pressure unit based on CMC processor according to claim 1, is characterized in that, described communication interface, described Industrial Ethernet interface, described analog-digital chip are connected with an integrated communication interface socket.
3. the pressure unit based on CMC processor according to claim 1, is characterized in that, described data acquisition module comprises: pressure transducer, temperature sensor.
4. the pressure unit based on CMC processor according to claim 3, is characterized in that, described pressure transducer is connected with described CMC processor by an analog to digital converter.
5. the pressure unit based on CMC processor according to claim 1, it is characterized in that, described communication interface is: RS485 interface chip, and described CMC processor has UART serial ports, and described CMC processor is connected with described RS485 interface chip by described UART serial ports.
6. the pressure unit based on CMC processor according to claim 1, is characterized in that, described CMC processor has SPI serial data interface, and described display module, described data memory module are connected with described SPI serial data interface.
7. the pressure unit based on CMC processor according to claim 1, is characterized in that, described CMC processor has IIC interface, and described data-carrier store is connected with described IIC interface.
8. the pressure unit based on CMC processor according to claim 1, is characterized in that, described analog-digital chip is loop service type 4mA ~ 20mA digital to analog converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510959461.6A CN105509955A (en) | 2015-12-21 | 2015-12-21 | Pressure transmitter based on CMC processor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510959461.6A CN105509955A (en) | 2015-12-21 | 2015-12-21 | Pressure transmitter based on CMC processor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105509955A true CN105509955A (en) | 2016-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510959461.6A Pending CN105509955A (en) | 2015-12-21 | 2015-12-21 | Pressure transmitter based on CMC processor |
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| CN (1) | CN105509955A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2620863Y (en) * | 2003-05-01 | 2004-06-16 | 柳州欧维姆机械有限责任公司 | Oil pressure detecting system for starting jack |
| US20050139011A1 (en) * | 2003-12-24 | 2005-06-30 | Toyoda Koki Kabushiki Kaisha | Pressure sensor |
| CN201242482Y (en) * | 2008-08-07 | 2009-05-20 | 赵昕 | Wind pressure measuring device based on Zigbee wireless sensor network |
| CN204228303U (en) * | 2014-07-31 | 2015-03-25 | 武汉松野智能仪表有限公司 | Intelligent digital pressure unit |
| CN205317398U (en) * | 2015-12-21 | 2016-06-15 | 上海自动化仪表有限公司 | Pressure transmitter based on CMC treater |
-
2015
- 2015-12-21 CN CN201510959461.6A patent/CN105509955A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2620863Y (en) * | 2003-05-01 | 2004-06-16 | 柳州欧维姆机械有限责任公司 | Oil pressure detecting system for starting jack |
| US20050139011A1 (en) * | 2003-12-24 | 2005-06-30 | Toyoda Koki Kabushiki Kaisha | Pressure sensor |
| CN201242482Y (en) * | 2008-08-07 | 2009-05-20 | 赵昕 | Wind pressure measuring device based on Zigbee wireless sensor network |
| CN204228303U (en) * | 2014-07-31 | 2015-03-25 | 武汉松野智能仪表有限公司 | Intelligent digital pressure unit |
| CN205317398U (en) * | 2015-12-21 | 2016-06-15 | 上海自动化仪表有限公司 | Pressure transmitter based on CMC treater |
Non-Patent Citations (1)
| Title |
|---|
| 李乐等: "国产CMC540C128处理器在智能压力变送器中的应用", 《仪器仪表标准化与计量》 * |
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Application publication date: 20160420 |