CN201707376U - Signal converter of transmitter - Google Patents
Signal converter of transmitter Download PDFInfo
- Publication number
- CN201707376U CN201707376U CN2010202525980U CN201020252598U CN201707376U CN 201707376 U CN201707376 U CN 201707376U CN 2010202525980 U CN2010202525980 U CN 2010202525980U CN 201020252598 U CN201020252598 U CN 201020252598U CN 201707376 U CN201707376 U CN 201707376U
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- signal
- converter
- transmitter
- chip microcomputer
- signal converter
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Abstract
The utility model belongs to the technical field of transmitters, and particularly relates to a signal converter of a transmitter. A field transmitter is connected with an A/D converter by a 250-Ohm standard resistor; the A/D converter is connected with a singlechip that is connected with 2 to 4 D/A converters; the 2 to 4 D/A converters are connected with an isolator respectively; and the field transmitter and the singlechip are connected with an internal 24V power supply. The signal output by the field transmitter is 4 to 20mA signal. The signal converter has the advantages that the standard signal of the transmitter is divided into independent multiplex signals which can be used by a plurality of DCS systems simultaneously. The signal converter of the transmitter facilitates an instrument maintainer to find the faults and saves the investment.
Description
Technical field
The utility model belongs to the transmitter technical field, particularly relates to a kind of signal converter of transmitter.
Background technology
On the engineering, we usually run into certain technological parameter in the scene and need send in 2 or a plurality of equipment and monitor or control use, at this time need to install detection and the conversion that a plurality of transmitters carry out parameter.Especially in improvement project, the difficulty that a plurality of transmitters are installed in limited space is very big, invests also much bigger.And the standard device that a road sign calibration signal is not transformed into the multichannel standard signal on the market can be used.
In order to reduce expenses, satisfy technological requirement, should develop a kind of signal converter of transmitter of the standard signal that transmitter standard signal one tunnel can be converted to two-way or multichannel, to satisfy the requirement of engineering, for the instrument maintainer provides an indispensable instrument, make things convenient for searching of instrument fault simultaneously.
Summary of the invention
The purpose of this utility model provides a kind of signal converter of transmitter, and transmitter standard signal one tunnel is divided into mutually independently two-way or multiple signals, can be simultaneously for using in many cover DCS systems or other equipment.
The purpose of this utility model realizes by following technical proposals:
The signal converter of transmitter of the present utility model, comprise in-situ transducer, it is characterized in that described in-situ transducer is connected with A/D converter by 250 ohm of measuring resistances, this A/D converter is connected with single-chip microcomputer, this single-chip microcomputer is connected with 2～4 D/A converters, these 2～4 D/A converters connect an isolator respectively, and described in-situ transducer, single-chip microcomputer are connected with inner 24v power supply.
The output signal of described in-situ transducer is 4～20mA signal.
Described in-situ transducer, 250 ohm of measuring resistances, A/D converter, single-chip microcomputer, D/A converter, isolator, inner 24v power supplys are arranged in the can.
The signal converter of transmitter of the present utility model adopts single-chip microcomputer as controller, input signal (4～20mA signal of in-situ transducer) is received two input terminals (inner 24v distribution) of this device, by installing 250 ohm of inner measuring resistances, take out voltage signal, then, this voltage signal is carried out the A/D conversion, insert single-chip microcomputer, the single-chip microcomputer outputting multiplex signals is by D/A converter, as the output of standard signal.Realize one tunnel input, multichannel output.
The utility model has the advantages that:
(1) transmitter standard signal one tunnel is divided into mutually independently multiple signals, can be simultaneously for how cover DCS system uses.
(2) signal converter of transmitter has made things convenient for the instrument maintainer to search fault.
(3) save investment.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.
As shown in Figure 1, the signal converter of transmitter of the present utility model, comprise in-situ transducer, it is characterized in that described in-situ transducer is connected with A/D converter by 250 ohm of measuring resistances, this A/D converter is connected with single-chip microcomputer, this single-chip microcomputer is connected with 2～4 D/A converters, and these 2～4 D/A converters connect an isolator respectively, and described in-situ transducer, single-chip microcomputer are connected with inner 24v power supply.
The output signal of described in-situ transducer is 4～20mA signal.
In embodiment as shown in Figure 1, D/A converter is 2.Also can adopt 3,4 or more D/A converter to be connected, correspondingly increase isolator with single-chip microcomputer.
Described in-situ transducer, 250 ohm of measuring resistances, A/D converter, single-chip microcomputer, D/A converter, isolator, inner 24v power supplys are arranged in the can.
The signal converter of transmitter of the present utility model adopts single-chip microcomputer as controller, input signal (4～20mA signal of in-situ transducer) is received two input terminals (inner 24v distribution) of this device, by installing 250 ohm of inner measuring resistances, take out voltage signal, then, this voltage signal is carried out the A/D conversion, insert single-chip microcomputer, the single-chip microcomputer outputting multiplex signals is by D/A converter, as the output of standard signal.Realize one tunnel input, multichannel output.
The utility model has the advantages that: transmitter standard signal one tunnel is divided into mutually independently multiple signals, can be simultaneously for how cover DCS system uses. The signal adapter of transmitter has made things convenient for instrument attendant looking up the fault. Save investment.
Claims (3)
1. the signal converter of a transmitter, comprise in-situ transducer, it is characterized in that described in-situ transducer is connected with A/D converter by 250 ohm of measuring resistances, this A/D converter is connected with single-chip microcomputer, this single-chip microcomputer is connected with 2～4 D/A converters, these 2～4 D/A converters connect an isolator respectively, and described in-situ transducer, single-chip microcomputer are connected with inner 24v power supply.
2. the signal converter of transmitter according to claim 1, the output signal that it is characterized in that described in-situ transducer is 4～20mA signal.
3. the signal converter of transmitter according to claim 1 is characterized in that described in-situ transducer, 250 ohm of measuring resistances, A/D converter, single-chip microcomputer, D/A converter, isolator, inner 24v power supplys are arranged in the can.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202525980U CN201707376U (en) | 2010-07-09 | 2010-07-09 | Signal converter of transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202525980U CN201707376U (en) | 2010-07-09 | 2010-07-09 | Signal converter of transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201707376U true CN201707376U (en) | 2011-01-12 |
Family
ID=43444536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202525980U Expired - Fee Related CN201707376U (en) | 2010-07-09 | 2010-07-09 | Signal converter of transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201707376U (en) |
-
2010
- 2010-07-09 CN CN2010202525980U patent/CN201707376U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 114001 Anshan District, Liaoning, No. 219 Road, No. 39, Tiedong Patentee after: Anshan Iron and Steel Group Mining Co., Ltd. Address before: 114001 Anshan District, Liaoning, No. 219 Road, No. 39, Tiedong Patentee before: Anshan Iron & Steel Group Mining Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110112 Termination date: 20180709 |