CN201318952Y - On-line paperless recorder - Google Patents
On-line paperless recorder Download PDFInfo
- Publication number
- CN201318952Y CN201318952Y CN 200820156347 CN200820156347U CN201318952Y CN 201318952 Y CN201318952 Y CN 201318952Y CN 200820156347 CN200820156347 CN 200820156347 CN 200820156347 U CN200820156347 U CN 200820156347U CN 201318952 Y CN201318952 Y CN 201318952Y
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- CN
- China
- Prior art keywords
- host computer
- sensors
- line
- digital
- paperless recorder
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides an on-line paperless recorder which comprises a host computer and is characterized in that the host computer is connected with a single-chip; the single-chip is connected with a digital-to-analog converter; and the digital-to-analog converter is connected with at least two sensors. The on-line paperless recorder collects different data at the same time through double channels by utilizing the two sensors, and the double channels do not influence each other and can be indicated respectively so as to adapt to different sensors. A calibration algorithm adopts a least square method to fit change curves of the sensors, and high-precision fitting can be achieved. The generation functions for a real-time curve and a conditional curve are achieved in a memorizer of the host computer, extremely high capacity for data storing can be realized, and numerical values, curves and history records can be observed during the measurement process.
Description
Technical field
The utility model relates to a kind of online recording instrument without paper, is used for monitoring, record and the teletransmission of various procedure parameters (as: temperature), belongs to online recording instrument without paper technical field.
Background technology
Present industrial instrument becomes the simulating signal of sending by receiving various transmitter, delivers to A/D converter after amplifying, and converts the discernible digital signal of CPU to.CPU handles this digital signal, and delivers to display screen and show, perhaps adopts paper feed, the mechanical servo of writing rapidly.Its deficiency is and can only measures immediately and show signal, can't observe the dynamic process and the historical record of measurement, or need to change consumptive materials such as paper, pen, increases a large amount of line services.
The utility model content
The purpose of this utility model provides a kind of can the realization and the host computer combined network communication, shows with real-time curve, supports the input of two-way analog signals, and can store and the online recording instrument without paper of query history record at any time.
In order to achieve the above object, the technical solution of the utility model has provided a kind of online recording instrument without paper, comprises host computer, it is characterized in that, host computer connects single-chip microcomputer, single-chip microcomputer linking number weighted-voltage D/A converter, and digital to analog converter connects at least two sensors.
The utility model can be realized the binary channels different data of sampling simultaneously by two sensors, be independent of each other, and binary channels can demarcate respectively, to adapt to different sensors.Calibration algorithm adopts the change curve of least square fitting sensor, can reach the high precision match.Include real-time curve and conditional curve systematic function in the storer of host computer, greatly data, may observe measuring process numerical value and curve and historical record are stored in capacity ground.
Description of drawings
The structured flowchart of a kind of online recording instrument without paper that Fig. 1 provides for the utility model.
Embodiment
Specify the utility model below in conjunction with embodiment.
Embodiment
As shown in Figure 1, the structured flowchart of a kind of online recording instrument without paper that provides for the utility model comprises host computer, and host computer connects single-chip microcomputer by serial ports, and single-chip microcomputer is by SPI interface linking number weighted-voltage D/A converter, and digital to analog converter connects two sensors.
The various analog signalses of two-way sensor passes are to signal input part, and signal is delivered to band from the A/D of gain function digital to analog converter through behind the gating, converts the digital signal that single-chip microprocessor MCU can be discerned to.Simple filtering and control algolithm by slave computer MCU obtain stable data, by the COM communication port data processed are sent to host computer CPU.Host computer is by the floating-point graphic presentation now factually of software logarithm, and storage.In gatherer process, upper computer software can be revised the filtering strength of slave computer software, the switch of sampling channel at any time, and shows range.
When needs observation history curve, can from historical record, access the corresponding data and curves of this coding, and can check relevant various critical datas according to coding with the storage curve.
Host computer CPU can output to printer port with the sampling event memory, prints, with the form storage data of form.The utility model supports the binary channels input measurement to show that be 8 hours (adjustable) the longest writing time, 2000 of maximum storage record data (adjustable) at most.
Claims (3)
1. an online recording instrument without paper comprises host computer, it is characterized in that, host computer connects single-chip microcomputer, single-chip microcomputer linking number weighted-voltage D/A converter, and digital to analog converter connects at least two sensors.
2. a kind of online recording instrument without paper as claimed in claim 1 is characterized in that described host computer connects described single-chip microcomputer by serial ports.
3. a kind of online recording instrument without paper as claimed in claim 1 is characterized in that, described single-chip microcomputer is by SPI interface linking number weighted-voltage D/A converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820156347 CN201318952Y (en) | 2008-12-01 | 2008-12-01 | On-line paperless recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820156347 CN201318952Y (en) | 2008-12-01 | 2008-12-01 | On-line paperless recorder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201318952Y true CN201318952Y (en) | 2009-09-30 |
Family
ID=41197716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200820156347 Expired - Fee Related CN201318952Y (en) | 2008-12-01 | 2008-12-01 | On-line paperless recorder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201318952Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102495562A (en) * | 2011-12-30 | 2012-06-13 | 上海自动化仪表股份有限公司 | Sampling circuit for SR1000 paperless recording instrument |
-
2008
- 2008-12-01 CN CN 200820156347 patent/CN201318952Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102495562A (en) * | 2011-12-30 | 2012-06-13 | 上海自动化仪表股份有限公司 | Sampling circuit for SR1000 paperless recording instrument |
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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: 20090930 Termination date: 20111201 |