CN201380193Y - Rolled steel alternating current main motor working current checking and displaying device - Google Patents
Rolled steel alternating current main motor working current checking and displaying device Download PDFInfo
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- CN201380193Y CN201380193Y CN200920116034U CN200920116034U CN201380193Y CN 201380193 Y CN201380193 Y CN 201380193Y CN 200920116034 U CN200920116034 U CN 200920116034U CN 200920116034 U CN200920116034 U CN 200920116034U CN 201380193 Y CN201380193 Y CN 201380193Y
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- main motor
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- motor working
- working current
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Abstract
A rolled steel alternating current main motor working current checking and displaying device comprises a current sensor installed on working current of an alternating current main motor, a resistance connected with the current sensor, a V/F convertor connected with the resistance, a microprocessor connected with the V/F convertor, and the microprocessor is further connected with a display. The rolled steel alternating current main motor working current checking and displaying device adopts a simple circuit structure to realize checking and displaying working current of rolled steel alternating current main motors, and has low cost and easy control, and field working staffs can clearly read the current data of the rolled steel main motors in a range of 300 meters of steel rolling fields.
Description
Technical field
The utility model relates to a kind of checkout equipment of steel rolling mill, relates in particular to detection and display unit that steel rolling exchanges main motor working current.
Background technology
Current, the heating and temperature control of the different steel grades of Metallurgical Enterprise also is simultaneously the key factor of restriction steel rolling process level because of its complexity is puzzlement technical staff's a problem always.And temperature controlled object steel billet temperature also is the important parameter that directly tests the stable operation of follow-up steel rolling equipment such as roll, steel rolling master motor.In process of production, took place to reach technological requirement, and caused the malignant event of roll breakage, electrical fault even damage because of the temperature of the steel billet of coming out of the stove.Therefore the detection that steel rolling is exchanged main motor working current seems very important, and the most frequently used is to adopt the collective and distributive type data collecting system.By several data collection stations multi-point temp, steel billet temperature, motor temperature etc. in the stove are carried out data acquisition, by asynchronous serial transmission data, finally show the output result then at host computer.These type of product systems are complete, adopt stagewise industrial network structure, extensively adopt integrated industrial instrument and industrial control computer to realize that adaptive capacity, reliability, correspondence are all fine.But obvious defects is a system relates to that industrial instrument is many, cost is high, technical sophistication, installation are loaded down with trivial details, show not directly perceived to the steel rolling site operation personnel.
The utility model content
The purpose of this utility model provides detection and the display unit that a kind of steel rolling simple in structure, lower-cost exchanges main motor working current.
Above-mentioned technical purpose of the present utility model is achieved by the following technical programs: steel rolling exchanges the detection and the display unit of main motor working current, comprise and be installed in the current sensor that exchanges on the main motor working current, the resistance that links to each other with described current sensor, the V/F converter that links to each other with described resistance, with the microprocessor that described V/F converter links to each other, described microprocessor also is connected with display.
Current sensor of the present utility model can adopt precision height, closed loop Hall current sensor that antijamming capability is strong, and no-load voltage ratio is selected according to the engineering practical application.The electric current of current sensor collection adopts precision resistance to be converted to voltage signal according to Ohm's law, and resistance is selected according to concrete voltage conversion range.Then voltage signal is carried out the V/F conversion by the V/F converter that links to each other with described resistance, make voltage signal be converted to frequency signal output.Can adopt auto-correlation algorithm that the current data of discrete acquisitions is carried out computing in the processing with sample frequency at a high speed to the frequency acquisition signal and carry out analyzing and processing with the microprocessor of V/F converter, obtain and cross the steel characteristic value in the steel rolling.At last characteristic value data being amplified in display through signal is to show with fixing refreshing frequency on the big electronic curtain, and big electronic curtain equipment leaves the RS485 computer interface.The operating current that present technique equipment is mainly used in heavy-duty motor detects demonstration.
As of the present utility model preferred, display adopts 16 inches charactrons to show steel rolling master current of electric numerical value.The utility model is installed on Hall current sensor on the motor supply lines.Display of the present utility model can be installed the epoxy resin board that adopted excellent insulation performance as showing installation base plate.16 inches red charactrons have been installed, every 700mA of operating current.The main motor simulation current signal of sensor collection transmits through Shielded Twisted Pair, directly enter the V/F converter, finished the voltage/frequency conversion, after the computing output module of microprocessor is handled, filter out the characteristic current value of rolling process, send in the power amplifier module and amplify, on display, show at last.For increasing display effect, 16 inches red charactron outsides the red plexiglass plate has been installed and has been shown cover plate as the outside.After having adopted technique scheme of the present utility model, in the on-the-spot 300 meters scopes of steel rolling, 1.0 above eyesights can clearly read steel rolling master current of electric data.
Described microprocessor comprises computing output module and power amplifier module.
In sum, the utility model adopts simple circuit configuration to realize steel rolling is exchanged the detection and the demonstration of main motor working current, its cost is low and be easy to control, and the field personnel can clearly read steel rolling master current of electric data in the on-the-spot 300 meters scopes of steel rolling.
Description of drawings
Fig. 1 is a block diagram of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
This specific embodiment only is to explanation of the present utility model; it is not to restriction of the present utility model; those skilled in the art can make the modification that does not have creative contribution to present embodiment as required after reading this specification, but as long as all are subjected to the protection of Patent Law in claim scope of the present utility model.
Embodiment: as shown in Figure 1, a kind of steel rolling exchanges the detection and the display unit of main motor working current, comprise and be installed in the current sensor that exchanges on the main motor working current, the resistance that links to each other with described current sensor, the V/F converter that links to each other with described resistance, with the microprocessor that described V/F converter links to each other, described microprocessor also is connected with display.The sensor of present embodiment adopts Hall current sensor, no-load voltage ratio 600: 5.Voltage to frequency converter spare has adopted LM331, and Darlington transistor D882 has been adopted in power amplification, the maximum output current 5A that allows.Equipment general power 4.0W.The center microprocessor has adopted STC5410AD, basic frequency 12M.Circuit connects: 8 pin of LM331 connect+the 5V power supply, 4 pin ground connection, and 1 pin links to each other with 6 pin, connects ceramic disc capacitor and 10K resistance of a 0.001uF, electric capacity other end ground connection, the resistance other end is as signal input part (V voltage); 2 pin 5K resistance of series connection 5K potentiometer of connecting again that links to each other with 7 pin, potentiometer other end ground connection; 5 pin connect a 6.8K resistance and a 330pF electric capacity, another termination+5V power supply of resistance, electric capacity other end ground connection; 3 pin connect a 3.3K resistance, the other end ground connection of resistance, and 3 pin are as signal output part (F frequency), and this circuit is finished the V/F conversion.Signal output part 3 pin of LM331 are received the 10 pin P3.4 (being the T0 counter) of single-chip microcomputer; 28 pin of single-chip microcomputer connect+5V power supply and 14 pin ground connection; 6 pin of single-chip microcomputer and 7 pin connect a 12MHz crystal oscillator, and the crystal oscillator two ends respectively connect the ceramic disc capacitor of a 20pF, the other end ground connection of two electric capacity; 3 pin of single-chip microcomputer are reset terminal, connect the electrochemical capacitor of a 10K resistance and a 10uF, resistance other end ground connection, and the positive pole of electric capacity connects+the 5V power supply, and negative pole connects 3 pin, at the two ends of electric capacity button in parallel; 25 pin P1.7 of single-chip microcomputer connect 14 pin (DS) of first 74HC595N, the i.e. input of 74HC595N data; 24 pin P1.6 of single-chip microcomputer meet the 12 pin STcp (output latch control impuls) of 4 74HC595N; 23 pin P1.5 of single-chip microcomputer meet the 11 pin SHcp (shift clock pulse) of 4 74HC595N.16 pin and 10 pin of 4 74HC595N connect+the 5V power supply, 8 pin and 13 pin ground connection; 9 pin of first 74HC595N connect 14 pin of second 74HC595N; 9 pin of second 74HC595N connect 14 pin of the 3rd 74HC595N; 9 pin of the 3rd 74HC595N connect 14 pin of the 4th 74HC595N; The empty pin of 9 pin of the 4th 74HC595N; The Q0-Q7 of each 74HC595N respectively connects the current-limiting resistance of a 10K, the base stage of another termination NPN Darlington transistor D882 of each resistance; The colelctor electrode of each Darlington transistor respectively connects the negative pole (lowest order Q0 connects the A segment encode, and Q1 connects the B segment encode, and Q2 connects the C segment encode, and Q3 connects the D segment encode, and Q4 connects the E segment encode, and Q5 connects the F segment encode, and Q6 connects the G segment encode, and it is decimal point that highest order Q7 connects the DP segment encode) of the segment encode of a charactron; The positive pole of each segment encode connects+the 12V power supply; The grounded emitter of each Darlington transistor.Structural design and annexation as shown in Figure 2, the overall structure framework has adopted angle steel as support, inside is provided with vertical crossbeam.Adopted 1.0mm stainless steel outsourcing outward appearance in the inner frame outside.Embedded panel construction has been made in whole positive both sides.Embedded degree of depth 3.0mm, front panel is considered from observation adaptability, has been adopted the bright poly (methyl methacrylate) plate outward appearance of red full impregnated.Inner crossbeam is epoxy resin board fixedly, and thickness 2.0mm is installed on circuit module on the epoxy resin board.Comprising: signals collecting and computing output module and power amplifier module, the inboard degree of depth 15mm of surperficial red panel, angle iron frame is installed the epoxy resin board that connects 16 inches red charactrons.The sensor connector is left in side, equipment right side.
Claims (7)
1, steel rolling exchanges the detection and the display unit of main motor working current, comprise and be installed in the current sensor that exchanges on the main motor working current, the resistance that links to each other with described current sensor, the V/F converter that links to each other with described resistance, with the microprocessor that described V/F converter links to each other, described microprocessor also is connected with display.
2, steel rolling according to claim 1 exchanges the detection and the display unit of main motor working current, it is characterized in that: described current sensor is the closed loop Hall current sensor.
3, steel rolling according to claim 1 exchanges the detection and the display unit of main motor working current, and it is characterized in that: described microprocessor comprises computing output module and power amplifier module.
4, steel rolling according to claim 1 exchanges the detection and the display unit of main motor working current, and it is characterized in that: described display has the epoxy resin installation base plate.
5, steel rolling according to claim 2 exchanges the detection and the display unit of main motor working current, it is characterized in that: the no-load voltage ratio of described closed loop Hall current sensor is 600: 5.
6, steel rolling according to claim 1 exchanges the detection and the display unit of main motor working current, it is characterized in that: described V/F converter model is LM331.
7, steel rolling according to claim 3 exchanges the detection and the display unit of main motor working current, and described power amplifier module adopts Darlington transistor D882.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920116034U CN201380193Y (en) | 2009-03-20 | 2009-03-20 | Rolled steel alternating current main motor working current checking and displaying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920116034U CN201380193Y (en) | 2009-03-20 | 2009-03-20 | Rolled steel alternating current main motor working current checking and displaying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201380193Y true CN201380193Y (en) | 2010-01-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920116034U Expired - Fee Related CN201380193Y (en) | 2009-03-20 | 2009-03-20 | Rolled steel alternating current main motor working current checking and displaying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201380193Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104821726A (en) * | 2015-04-02 | 2015-08-05 | 桂林电子科技大学 | Electron beam welding machine power supply high-voltage voltage stabilization method and method employing micro ripper Cuk type converter |
| CN107377636A (en) * | 2017-08-11 | 2017-11-24 | 张家港联峰钢铁研究所有限公司 | A kind of abnormal current tracking method of rolling line production |
-
2009
- 2009-03-20 CN CN200920116034U patent/CN201380193Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104821726A (en) * | 2015-04-02 | 2015-08-05 | 桂林电子科技大学 | Electron beam welding machine power supply high-voltage voltage stabilization method and method employing micro ripper Cuk type converter |
| CN107377636A (en) * | 2017-08-11 | 2017-11-24 | 张家港联峰钢铁研究所有限公司 | A kind of abnormal current tracking method of rolling line production |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100113 Termination date: 20170320 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |