CN2034270U - Electric ribbon displaying equipment - Google Patents
Electric ribbon displaying equipment Download PDFInfo
- Publication number
- CN2034270U CN2034270U CN 88205099 CN88205099U CN2034270U CN 2034270 U CN2034270 U CN 2034270U CN 88205099 CN88205099 CN 88205099 CN 88205099 U CN88205099 U CN 88205099U CN 2034270 U CN2034270 U CN 2034270U
- Authority
- CN
- China
- Prior art keywords
- led
- electric
- display
- converter
- direct current
- 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.)
- Withdrawn
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Abstract
The utility model provides electric ribbon display equipment in an electric unit combined instrument. The electric ribbon display equipment is composed of an I-V converter, a display driver, a light emitting display, an upper limit alarm relay and a lower limit alarm relay. The electric ribbon display equipment fills the blank that the electric unit combined instrument has no ribbon displaying equipment.
Description
The utility model relates to the electronic colour band display instrument of a kind of industrial automation instrument, particularly DDZ.
The colour band display instrument is mainly used to indicate the variation of liquid level, has to show imagery, convenient reading, be convenient to advantage such as sight far away.At present, have only color band display instrument in the pneumatic unit combination instrument, and yet there are no colour band indicator in the DDZ.
The purpose of this utility model is: the electronic colour band indicator that provides a kind of DDZ to use, and to fill up the deficiency of instrument kind.
Fig. 1 is a theory diagram of the present utility model.The utility model is by the I-V(current-voltage) converter, display driver, active display, upper and lower limit alarm relay constitute.
Fig. 2 is a circuit diagram of the present utility model.Now principle of work of the present utility model is done more detailed narration in conjunction with Fig. 2.
The utility model can be imported two kinds of signals: a kind of unified signal of the DDZ-of being II DDZ: direct current 0-10mA; A kind of is the unified signal of DDZ-III DDZ: direct current 4-20mA.
By R
1, D
1, W
1Form the I-V converter.During input 0-10mA signal, D
1Short circuit is by R
1The pressure drop and the W that produce
1Dividing potential drop converts the direct current linear voltage to; During input 4-20mA signal, use D
1Forward voltage drop V
DOffset the initial current conversion of signals and become the direct current linear voltage.For reaching the purpose of linear transformation, make R
1=5V
D/ 0.02, W
1Much larger than R
1
By IC
1(SL322) and BG
1-BG
10The display driver of forming converts the linear change in voltage of direct current to LED
1-LED
10Light gradually.If with LED
1-LED
10Single homeotropic alignment in order just can demonstrate the variation of liquid level visually.
In the time of need sending alerting signal, can be with J
1, J
2Relay is received required alarm set point B
1-B
10Go up and get final product.
The utlity model has advantage simple in structure, reliable operation.Therefore, can be used as the electronic colour band display instrument of DDZ.
Claims (1)
1, a kind of electronic colour band display instrument is characterized in that:
A, one are by R
1, D
1, W
1Form R
1=5V
D/ 0.02.W
1Much larger than R
1The I-V converter, this converter can make direct current O-10mA or 4-20mA input signal convert DC voltage to,
B, one are by IC
1(SL322) and BG
1-BG
10The display driver of forming converts the linear change in voltage of direct current to LED
1-LED
10Light gradually,
C, one are by LED
1-LED
10Form, and the active display of single homeotropic alignment in order,
D, one are by relay J
1And J
2Form, can send the upper and lower limit alarm relay of alerting signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88205099 CN2034270U (en) | 1988-04-29 | 1988-04-29 | Electric ribbon displaying equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88205099 CN2034270U (en) | 1988-04-29 | 1988-04-29 | Electric ribbon displaying equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2034270U true CN2034270U (en) | 1989-03-15 |
Family
ID=4839568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88205099 Withdrawn CN2034270U (en) | 1988-04-29 | 1988-04-29 | Electric ribbon displaying equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2034270U (en) |
-
1988
- 1988-04-29 CN CN 88205099 patent/CN2034270U/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |