CN102135443A - Intelligent weighing control instrument - Google Patents
Intelligent weighing control instrument Download PDFInfo
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- CN102135443A CN102135443A CN201010101292XA CN201010101292A CN102135443A CN 102135443 A CN102135443 A CN 102135443A CN 201010101292X A CN201010101292X A CN 201010101292XA CN 201010101292 A CN201010101292 A CN 201010101292A CN 102135443 A CN102135443 A CN 102135443A
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- intelligent weighing
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Abstract
The invention provides an intelligent weighing control instrument, which comprises a processor unit, a programmable logic controller (PLC) unit, a man-machine interface unit, a dynamic weighing transmitter unit and a dual-channel system bus interface, wherein the processor unit is subjected to man-machine interaction with a user through the man-machine interface unit; the PLC unit is connected with the processor unit through a programmable interface; the dynamic weighing transmitter unit receives a real-time weight signal and transmits the real-time weight signal to the processor unit; and the dual-channel system bus interface is used for connecting the processor unit and all kinds of industrial equipment and carrying out data transfer. The intelligent weighing control instrument can carry out static weighing or dynamic weighing and is connected with all kinds of industrial equipment to form a system so as to achieve accurate measurement and control.
Description
[technical field]
The present invention relates to weighing instrument instruments and meters technical field, particularly relate to a kind of intelligent weighing control instrument.
[background technology]
Traditional weighing instrument can only be used for the demonstration of weight basically.The principle of work of LOAD CELLS is as follows: produce elastic deformation under external force as elastic bodys such as flexible member, sensitive beam, make the resistance strain gage that sticks on its surface also in company with producing distortion, after the resistance strain gage distortion, its resistance will change, again through corresponding metering circuit, this resistance variations is converted to voltage or current value, thereby has finished the process that external force is transformed to electric signal.High-precision A conversion by instrument shows weight.In the prior art, the weighing system that adopts on quantitative package and the filling apparatus normally is made up of PLC, HMI and weighing instrument etc., their inside is to connect by industrial field bus such as 485 buses or ProfiBus, and finishes control to weighing system by several single-chip microcomputers.
Yet, in the industrial online weighing system of reality, needing to improve AD conversion and sample rate, and the precision of quantitative package, this just presses for ability to communicate and the reliability that improves between single CPU, therefore, needs the incorporate EPLC control instrument of weighing.
[summary of the invention]
The objective of the invention is to solve the above-mentioned problems in the prior art, a kind of intelligent weighing control instrument of gathering man-machine interface (HMI), PLC and weight transmitter is provided.
For achieving the above object, the present invention adopts following technical scheme: a kind of intelligent weighing control instrument, comprise processor unit, PLC unit, human and machine interface unit, dynamic weighing transmitter unit and dual channel system bus (AHB) interface, described processor unit carries out man-machine interaction by described human and machine interface unit and user; Described PLC unit links to each other with described processor unit by programmable interface; Described dynamic weighing transmitter unit receives real-time weight signal and is sent to described processor unit; Described dual channel system bus interface is used to connect described processor unit and all types of industries equipment, the line data transmission of going forward side by side.
Wherein, described dual channel system bus interface comprises TCP/IP interface and CAN bus interface.
Described processor unit adopts the ARM 32-bit microprocessor.
Described intelligent weighing instrument adopts RTOS as real time operating system.
Described human and machine interface unit adopts the lattice type LCD touch display screen.
Adopt the dynamic algorithm of data analysis, curve fitting in the described dynamic weighing transmitter unit, and adopt risc instruction set.
Beneficial effect of the present invention is that as an incorporate control intelligent weighing control instrument able to programme, the present invention is simple in structure, the integrated level height, compatible preferable, have good human-computer interaction function and system extension function, support programming Control, guaranteed the accuracy and the real-time of weighing.
[description of drawings]
Fig. 1 is the structured flowchart of an embodiment of intelligent weighing control instrument of the present invention;
Fig. 2 is the working method synoptic diagram of intelligent weighing control instrument of the present invention.
The Reference numeral that relates among the figure is as follows:
100. processor unit 101.PC programming tool
200.PLC unit 300. human and machine interface unit
400. dynamic weighing transmitter unit 500.TCP/IP interface
600.CAN bus interface
S10～S35. step
[embodiment]
Below in conjunction with embodiment and with reference to accompanying drawing the present invention is further described.
As shown in Figure 1, be the structured flowchart of an embodiment of intelligent weighing control instrument of the present invention.A kind of intelligent weighing control instrument, comprise processor unit 100, PLC unit 200, human and machine interface unit 300, dynamic weighing transmitter unit 400 and dual channel system bus interface, described dual channel system bus interface comprises TCP/IP interface 500 and CAN bus interface 600.Described processor unit 100 carries out man-machine interaction by described human and machine interface unit 300 with the user; Described PLC unit 200 links to each other with described processor unit 100 by programmable interface; Described dynamic weighing transmitter unit receives real-time weight signal and is sent to described processor unit; Described dual channel system bus interface is used to connect described processor unit and all types of industries equipment, the line data transmission of going forward side by side.
In this embodiment, described processor unit 100 adopts the ARM 32-bit microprocessor, and PC programming tool 101 is downloaded in the processing unit 100; Described intelligent weighing control instrument adopts RTOS as operating system; Described human and machine interface unit 300 adopts the lattice type LCD touch display screen.The lattice type LCD touch display screen provides operation and information to show service as the input-output unit of man-machine interface to the user.In this embodiment, adopt the lattice type LCD touch display screen of giant-screen high brightness, industry is weighed show more intuitively with accurate.The CAN bus interface is how main competitive mode bus structure, each node in the network all can adopt the arbitration mode by turn of no damage structure to compete to bus according to the bus access right of priority and send data, and the CAN compromise annulment station address coding, and replace communication data is encoded, this can make different nodes receive identical data simultaneously.Each data between nodes real-time communication of network that these characteristics make the CAN bus constitute is strong, and constitutes redundancy structure easily, improves the reliability of system and the dirigibility of system.The CAN bus interface is mainly used in and connects various industrial modules, as I/O module, servo module etc.Adopt the dynamic algorithm of data analysis, curve fitting in the described dynamic weighing transmitter unit 400, and employing risc instruction set, calculating the real time modelling weight signal that comes from LOAD CELLS that its inner A/D convertor circuit receives, and offer processor unit 100 after these real time modelling weight signals are converted to digital signal.
As shown in Figure 2, be the working method synoptic diagram of intelligent weighing control instrument of the present invention.After carrying out initialization step S10, interrupt service routine S20 is set, comprise: serial ports break in service S21, touch-screen break in service S22, AD break in service S23, I/O break in service S24 and communication port break in service S25, above-mentioned IE multitask S30, comprise: TCP/IP task S31, CAN bus task S32, demonstration refresh task S33, order line task S34 and real-time clock task S35, finish after task is finished.The present invention supports 32 tunnel interrupt control, has guaranteed the real-time and the accuracy of system's control.The present invention can be widely used in dispatching system, management system, feed proportioning system and poidometer charge system etc.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, without departing from the inventive concept of the premise; can also make some improvements and modifications, these improvements and modifications also should be considered within the scope of protection of the present invention.
Claims (6)
1. intelligent weighing control instrument, comprise processor unit, PLC unit, human and machine interface unit, dynamic weighing transmitter unit and dual channel system bus interface, it is characterized in that described processor unit carries out man-machine interaction by described human and machine interface unit and user; Described PLC unit links to each other with described processor unit by programmable interface; Described dynamic weighing transmitter unit receives real-time weight signal and is sent to described processor unit; Described dual channel system bus interface is used to connect described processor unit and all types of industries equipment, the line data transmission of going forward side by side.
2. intelligent weighing control instrument according to claim 1 is characterized in that, described dual channel system bus interface comprises TCP/IP interface and CAN bus interface.
3. intelligent weighing control instrument according to claim 1 is characterized in that, described processor unit adopts the ARM 32-bit microprocessor.
4. intelligent weighing control instrument according to claim 1 is characterized in that, described intelligent weighing control instrument adopts RTOS as real time operating system.
5. intelligent weighing control instrument according to claim 1 is characterized in that, described human and machine interface unit adopts the lattice type LCD touch display screen.
6. intelligent weighing control instrument according to claim 1 is characterized in that, adopts the dynamic algorithm of data analysis, curve fitting in the described dynamic weighing transmitter unit, and adopts risc instruction set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010101292XA CN102135443A (en) | 2010-01-26 | 2010-01-26 | Intelligent weighing control instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010101292XA CN102135443A (en) | 2010-01-26 | 2010-01-26 | Intelligent weighing control instrument |
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| CN102135443A true CN102135443A (en) | 2011-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010101292XA Pending CN102135443A (en) | 2010-01-26 | 2010-01-26 | Intelligent weighing control instrument |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104150422A (en) * | 2014-08-27 | 2014-11-19 | 梧州市旺捷机械制造有限公司 | Automatic measuring liquid filling machine |
| CN104369887A (en) * | 2014-08-27 | 2015-02-25 | 梧州市旺捷机械制造有限公司 | Liquid filling machine |
| CN103616065B (en) * | 2013-11-08 | 2015-10-28 | 太原市风行测控技术有限公司 | A kind of batching control system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0413934A (en) * | 1990-05-08 | 1992-01-17 | Mitsubishi Heavy Ind Ltd | Weight detector of weight control type packing machine |
| CN2864627Y (en) * | 2006-01-20 | 2007-01-31 | 梅特勒-托利多(常州)称重设备系统有限公司 | Control circuit for intelligent weighing sensor |
| CN201094083Y (en) * | 2007-07-27 | 2008-07-30 | 中国航天科技集团公司第四研究院第四十四研究所 | Hump weight checking apparatus |
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2010
- 2010-01-26 CN CN201010101292XA patent/CN102135443A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0413934A (en) * | 1990-05-08 | 1992-01-17 | Mitsubishi Heavy Ind Ltd | Weight detector of weight control type packing machine |
| CN2864627Y (en) * | 2006-01-20 | 2007-01-31 | 梅特勒-托利多(常州)称重设备系统有限公司 | Control circuit for intelligent weighing sensor |
| CN201094083Y (en) * | 2007-07-27 | 2008-07-30 | 中国航天科技集团公司第四研究院第四十四研究所 | Hump weight checking apparatus |
Non-Patent Citations (1)
| Title |
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| 张进: "基于ARM7的胶囊动态称重系统的研究与设计", 《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑 》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103616065B (en) * | 2013-11-08 | 2015-10-28 | 太原市风行测控技术有限公司 | A kind of batching control system |
| CN104150422A (en) * | 2014-08-27 | 2014-11-19 | 梧州市旺捷机械制造有限公司 | Automatic measuring liquid filling machine |
| CN104369887A (en) * | 2014-08-27 | 2015-02-25 | 梧州市旺捷机械制造有限公司 | Liquid filling machine |
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Application publication date: 20110727 |