CN101620247A - Electric intelligent display control transmitter - Google Patents
Electric intelligent display control transmitter Download PDFInfo
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- CN101620247A CN101620247A CN200910041483A CN200910041483A CN101620247A CN 101620247 A CN101620247 A CN 101620247A CN 200910041483 A CN200910041483 A CN 200910041483A CN 200910041483 A CN200910041483 A CN 200910041483A CN 101620247 A CN101620247 A CN 101620247A
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Abstract
The invention discloses an electric intelligent display control transmitter, comprising a signal sampling processing circuit, an MCU processor, a relay output alarm circuit, a key scanning and display circuit, a communication interface circuit, an analog quantity output module and a power supply module. The electric intelligent display control transmitter improves and integrates the functions of the traditional electric transmitter and displaying instruments, saves the site debugging auxiliary equipment, and has friendly man-machine interaction and more convenient installation and debugging. The electric intelligent display control transmitter has the advantages of high anti-interference performance, flexible networking, fast configuration, low cost and the like.
Description
Technical field
The present invention relates to a kind of power transducer, particularly a kind of electric intelligent display control transmitter that shows and control based on band.
Background technology
Transmitter is a kind of physical measurement signal or common electrical conversion of signals to be standard electric signal output or can be with the equipment of communication modes output.The conventional electric power transmitter is revised the parameter inconvenience because measurement parameter is not directly perceived and precision is not high, does not have friendly man-machine interface and shows there is not off-limit alarm, and measurement parameter and change send output number percent also not have demonstration, thereby on-the-spot Installation and Debugging inconvenience; And the existence of traditional Displaying Meter can only measurement parameter and the not high many defectives of measurement parameter precision.It is blank out that the demonstration of existing market upper set, control, change are sent in the high precision power transducer of one.
Summary of the invention
The purpose of this invention is to provide that a kind of band shows, control, become and send in one and high-precision electric intelligent display control transmitter, it can be used in any system, makes to install and debug more convenient, and the installation and maintenance cost of system is low and reliability is high.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of electric intelligent display control transmitter comprises signal sampling treatment circuit, MCU processor, relay output alarm circuit, key scan and display circuit, communication interface circuit, analog output module and power module.
The output of described signal sampling treatment circuit is connected to MCU processor inner high speed AD module and carries out analog to digital conversion, key scan is connected as human-computer interaction interface with the MCU processor with display circuit, the parameter that MCU processor basis collects is through doing corresponding output control and demonstration to the pilot relay output alarm circuit and the analog output module that link to each other after the calculation process, be used for the electric signal output of parameter off-limit alarm and standard, described communication interface circuit directly is connected with the MCU processor, for system provides far distance controlled and networking interface, be used for PC to the modification of transmitter parameter with read, described power module, it comprises 1 group of power management and conditioning module, for system provides power supply.
The invention has the beneficial effects as follows: improved and integrated the function of conventional electric power transmitter and Displaying Meter, saved the field adjustable utility appliance, the man-machine interaction close friend installs and debugs more convenient.The present invention has high noise immunity, and networking flexibility disposes advantages such as quick, with low cost.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the preferred block scheme that electric power of the present invention shows the control transmitter;
Fig. 2 is that signal sampling of the present invention is handled and MCU processor circuit schematic diagram;
Fig. 3 is key scan of the present invention and display circuit schematic diagram;
Fig. 4 is a communication interface circuit schematic diagram of the present invention;
Fig. 5 is analog output module circuit theory diagrams of the present invention;
Fig. 6 is a pilot relay output alarm circuit schematic diagram of the present invention.
Embodiment
With reference to Fig. 1, a kind of electric intelligent display control transmitter comprises signal sampling treatment circuit, MCU processor 4, relay output alarm circuit 5, key scan and display circuit 6, communication interface circuit 7, analog output module 8 and power module 9.
The output of described signal sampling treatment circuit is connected to MCU processor 4 inner high speed AD modules and carries out analog to digital conversion, key scan is connected as human-computer interaction interface with MCU processor 4 with display circuit 6, the parameter that MCU processor 4 bases collect is through doing corresponding output control and demonstration to the pilot relay output alarm circuit 5 and the analog output module 8 that link to each other after the calculation process, be used for the off-limit alarm of parameter and the electric signal output of standard, described communication interface circuit 7 directly is connected with MCU processor 4, for system provides far distance controlled and networking interface, be used for PC to the modification of transmitter parameter with read, described power module 9, it comprises 1 group of power management and conditioning module, for system provides power supply.
Further, as preferred embodiment, described signal sampling treatment circuit comprises three-phase electricity signal sampling module 1, amplifier is followed and clamping protective circuit 2, reference voltage circuit 3.Three-phase electricity signal sampling module 1 is by voltage transformer (VT) and/or current transformer output sampled signal; MCU processor 4 produces reference voltage output and is connected to reference voltage circuit 3; be input to amplifier after sampled signal is raised by reference voltage and follow and clamping protective circuit 2, its output is connected to MCU processor 4 inner high speed AD modules.
Further, as preferred embodiment, display circuit can be LED display circuit or LCD display circuit, and as preferred implementation, for making its simple in structure, dependable performance, described display circuit adopts the LED display circuit, and it comprises No. 1 code translator and 1 road binary-coded decimal driving circuit, be used for choosing of LED driving and button, make things convenient for man-machine interaction that parameter is set.
Further, as preferred embodiment, communication interface circuit can be RS485 interface circuit or power line carrier, PLC interface circuit, and as preferred implementation, stable and reliable for performance for making it, described communication interface circuit adopts the RS485 communication interface circuit.
Further, as preferred embodiment, this power module is selected switch power module for use.
With reference to Fig. 2, include single-chip microcomputer U1 as the described control circuit of preferred implementation, the pin 1 of described single-chip microcomputer U1 meets power vd D; Pin 6 ground connection; Pin 11 output reference voltages; Pin 9,10 and 12 connects measuring-signal; Pin 25-31 connects the LED driver module; Pin 21-23 connects the RS485 communication module; Pin 13 and 14 is succeeded the electrical equipment warning circuit; Pin 15 connects analog output module; Pin 2 meets power vd D by resistance; Pin 8 meets power vd D; Pin 7 passes through capacity earth; Wherein single-chip microcomputer U1 adopts internal clocking.
In the present embodiment, the selected model of single-chip microcomputer U1 is C8051F410.
Described signaling conversion circuit, by T1, T2, T3 voltage and/or current transformer, sample resistance R1, R2, R3, four high guaily unit and clamping protective circuit D1, D2, D3, D4, D5, D6 diode are formed.Described reference voltage 3 is provided by pin 11 outputs of single-chip microcomputer.
The preservation of all parameters is stored by IC10, memory IC 10 adopts the 24LC02B chip, chip IC 10 pin 1,2,3,4 ground connection wherein, chip IC 10 pin 8 meet power vd D and meet decoupling capacitor C9, and chip IC 10 pin 5,6,7 connect U1 pin 17,18,19 by pull-up resistor.
In Fig. 3 present embodiment, the LED display driver chip is made up of 2 74LS145 and 1 74LS164, and button drives and carries out scan process by 74LS145, by single-chip microcomputer U1 the 31st pin input key scan process information.
Mainly be made of 16,3 optocouplers of SP485RE chip IC and 1 triode with reference to the described RS485 module of Fig. 4, wherein IC16 pin 6,7 directly connects outside 485 changes 232 interfaces.
In Fig. 5 present embodiment, analog output module mainly is made of IC11, triode 1815 and optocoupler.
In Fig. 6 present embodiment, the pilot relay output alarm circuit mainly is to control two independently relays respectively, mainly is made up of 2 photoelectrical coupler P181 and two 1815 triodes.
More than be that preferable enforcement of the present invention is specified, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent variations or replacement under the prerequisite of spirit of the present invention, modification that these are equal to or replacement all are included in the application's claim institute restricted portion.
Claims (5)
1, a kind of electric intelligent display control transmitter is characterized in that: comprising:
Signal sampling treatment circuit, MCU processor (4), relay output alarm circuit (5), key scan and display circuit (6), communication interface circuit (7), analog output module (8) and power module (9);
The output of described signal sampling treatment circuit is connected to MCU processor (4) inner high speed AD module and carries out analog to digital conversion, key scan is connected as human-computer interaction interface with MCU processor (4) with display circuit (6), the parameter that MCU processor (4) basis collects is through doing corresponding output control and demonstration to the pilot relay output alarm circuit (5) and the analog output module (8) that link to each other after the calculation process, be used for the off-limit alarm of parameter and the electric signal output of standard, described communication interface circuit (7) is connected with MCU processor (4), for system provides far distance controlled and networking interface, be used for PC to the modification of transmitter parameter with read, described power module (9) provides power supply for system.
2, a kind of electric intelligent display control transmitter according to claim 1 is characterized in that: described signal sampling treatment circuit comprises three-phase electricity signal sampling module (1), amplifier is followed and clamping protective circuit (2), reference voltage circuit (3).
3, a kind of electric intelligent display control transmitter according to claim 1 is characterized in that: described key scan and display circuit (6) adopt key scan and LED display circuit.
4, a kind of electric intelligent display control transmitter according to claim 1 is characterized in that: described communication interface circuit (7) adopts the RS485 interface circuit.
5, a kind of electric intelligent display control transmitter according to claim 1 is characterized in that: described power module is a switch power module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910041483A CN101620247A (en) | 2009-07-24 | 2009-07-24 | Electric intelligent display control transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910041483A CN101620247A (en) | 2009-07-24 | 2009-07-24 | Electric intelligent display control transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101620247A true CN101620247A (en) | 2010-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910041483A Pending CN101620247A (en) | 2009-07-24 | 2009-07-24 | Electric intelligent display control transmitter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104615029A (en) * | 2014-11-20 | 2015-05-13 | 蚌埠天光传感器有限公司 | Digital measurement and control transmitter |
| CN116026486A (en) * | 2023-01-29 | 2023-04-28 | 中国长江电力股份有限公司 | But human-computer interaction's multi-output temperature changer |
-
2009
- 2009-07-24 CN CN200910041483A patent/CN101620247A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104615029A (en) * | 2014-11-20 | 2015-05-13 | 蚌埠天光传感器有限公司 | Digital measurement and control transmitter |
| CN116026486A (en) * | 2023-01-29 | 2023-04-28 | 中国长江电力股份有限公司 | But human-computer interaction's multi-output temperature changer |
| CN116026486B (en) * | 2023-01-29 | 2024-03-12 | 中国长江电力股份有限公司 | But human-computer interaction's multi-output temperature changer |
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Open date: 20100106 |