CN202024780U - Motor current recorder with remote data transfer function - Google Patents
Motor current recorder with remote data transfer function Download PDFInfo
- Publication number
- CN202024780U CN202024780U CN2011200862965U CN201120086296U CN202024780U CN 202024780 U CN202024780 U CN 202024780U CN 2011200862965 U CN2011200862965 U CN 2011200862965U CN 201120086296 U CN201120086296 U CN 201120086296U CN 202024780 U CN202024780 U CN 202024780U
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- central control
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Abstract
The utility model discloses a motor current recorder with a remote data transfer function, which solves the problem existing in the prior art that the measuring error is large as the measuring time is determined by people. The current recorder comprises a central control unit, current sampling circuits and a data remote-transfer unit, wherein the central control unit is composed of a programmable controller; the current sampling circuits are respectively composed of a three-phase current transformer and a signal amplifier; and the data remote-transfer unit is composed of a DF wireless data module. The central control unit receives A, B and C three-phase motor current sampling signals sent by the three-phase current transformers, and the received current signals are processed by the central control unit after carrying out analog-to-digital conversion through an A/D converter arranged in the central control unit respectively. The central control unit and the DF wireless data module are in two-way data transfer connection through corresponding ports. The motor current recorder with the remote data transfer function has the characteristics of convenience for use and accurate measurement and can realize the storage and remote transfer of motor measurement data.
Description
Technical field
The utility model relates to a kind of current measuring device that is used on the motor, and relating to specifically a kind ofly can just change a kind of rheometer recording device that electric current, reverse current, balanced ratio carry out automatic measurement and realize the teletransmission of data to motor.
Background technology
At present to have three-phase current motor that the rotating running needs just change parameters such as electric current, reverse current, balanced ratio when measuring general the employing in the mode of clamp on amperemeter or the special-purpose reometer of motor measure.Under these two kinds of metering systems, all need estimate the positive and negative process of changing one's profession of motor by operating personnel, manual test momentary current then, and note.Consequent problem is, owing to have artificial error in judgement, thereby must cause measuring error, and the result can't obtain measured value accurately exactly.In addition, under this measurement pattern, data can not be saved, operation curve that can not the analysis-by-synthesis motor.
Summary of the invention
In order to solve the prior art problem that proposes in the background technology, the utility model provides a kind of motor current registering instrument with teledata transmitting function, this kind motor current registering instrument can be under the control of innernal CPU stored Procedure, automatically carry out current sample and calculate balanced ratio in the time of near motor runs to the mid point that just changes stroke, counter-rotating stroke, and can also carry out teledata to measured data and transmit and store, have characteristics easy to use, that measure accurately and can realize the permanent storage of motor measurement data in this locality.
The technical solution of the utility model is: this kind has the motor current registering instrument of teledata transmitting function, comprise the power module, input keyboard and the LCD that place in the housing, and place the outer motor start and stop control module of housing, it is characterized in that: also comprise a central control unit that constitutes by programmable controller, the current sampling circuit that constitutes by threephase current transformer and signal amplifier respectively and the data remote unit that constitutes by DF wireless data module in the described galvo-recorder; Wherein, described central control unit, receive A, the B, the C threephase motor current sampling signal that are transmitted by threephase current transformer respectively, the current signal that receives is handled by described central control unit after the built-in A/D converter of described central control unit carries out analog to digital conversion respectively; Carrying out the bi-directional data transmission by corresponding port between described central control unit and the described DF wireless data module connects; Described central control unit is exported control signal by built-in Motor Control signal output part to described motor start and stop control module.
During concrete enforcement, described programmable controller is a Siemens S7 series programmable controller.In addition, further optimized for making above scheme, described galvo-recorder also comprises a CH375U disk storage module, and the signal output part to be stored of described central control unit is connected with the data receiver of described CH375U disk storage module.
The utlity model has following beneficial effect: the utility model adopts microprocessor as the control core, it is under the control of innernal CPU stored Procedure, when the motor machine runs near the mid point of upstroke, down stroke, carry out current sample automatically and calculate balanced ratio after the electric current jitter conditions is judged the correct sampling time by detecting, and can therefore have easy to use, measurement characteristic of accurate by calculating the jig frequency of measuring oil pumper automatically.In addition, these measurement data can be stored in the external storage unit of CPU as interface by CH375U disk storage module, at any time call as required, solved the problem that artificial judgement Measuring Time, manual record measurement data are difficult for preserving, occurring easily error of passing through that exists in the prior art.In this kind registering instrument, owing to increased a DF wireless data module, in 200 meters scopes, can carry out the bi-directional of data by this data module, therefore, can realize the long-range data of motor are transmitted, reduce the time of operating personnel to work on the spot, very easy to use, and improved work efficiency.
Description of drawings:
Fig. 1 is a theory of constitution block diagram of the present utility model.
Fig. 2 is an electrical schematic diagram of the present utility model.
Embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By shown in Figure 1, this kind has the motor current registering instrument of teledata transmitting function, comprise the power module, input keyboard and the LCD that place in the housing, and place the outer motor start and stop control module of housing, aforementioned part is all basic identical with prior art, and this device makes improvements part and is: also comprise a central control unit that is made of programmable controller, the current sampling circuit that is made of threephase current transformer and signal amplifier respectively and the data remote unit that is made of DF wireless data module in the described galvo-recorder; Wherein, described central control unit, receive A, the B, the C threephase motor current sampling signal that are transmitted by threephase current transformer respectively, the current signal that receives is handled by described central control unit after the built-in A/D converter of described central control unit carries out analog to digital conversion respectively; Carrying out the bi-directional data transmission by corresponding port between described central control unit and the described DF wireless data module connects; Described central control unit is exported control signal by built-in Motor Control signal output part to described motor start and stop control module.
During concrete enforcement, described programmable controller is preferably Siemens S7 series programmable controller.Electrical schematic diagram under this embodiment as shown in Figure 2, electrical schematic diagram as shown in Figure 2, what show in the figure is the sampling circuit of a phase current.Wherein the measurement electric current in the current sampling circuit by mutual inductor T1 acquired signal after again via obtaining ac voltage signal behind the sample resistance, when voltage signal during at negative half-cycle signal after resistance R 5, R4, diode D1 and operational amplifier are with the signal counter-rotating, give 6 pin of operational amplifier, give 6 pin of operational amplifier after signal is directly gathered electric current by resistance R 5, R4 during in the semiperiod when voltage signal, just formed the voltage signal of a full-wave rectification like this at 6 pin.This signal is exported by 7 pin after amplifying through operational amplifier, resistance R 6, R7 again, the voltage signal of this moment is being given A/D converter through after the RC filtering circuit filtering of being made up of resistance R 8, capacitor C 5 with d. c. voltage signal, this converter is built among the CPU, imports from 2 pin.
The reference voltage circuit that is used to finish digital-to-analog conversion is mainly produced the reference voltage of 2.5V by TL431, resistance R 9; and power circuit is to constitute the electric power system of 3.8V to 4.8V by 3 joint alkaline batteries; resistance R 6 and farad capacitor C0 have constituted interim electric power system; when changing battery; it can guarantee 3 minutes system power consumptions, comes the protection system data not lose because of changing battery.Capacitor C 1 is a power filtering capacitor.Power supply is directly supplied with 20 pin of CPU.CPU electrify restoration circuit S7 is made of button REST, capacitor C 2, resistance R 12, resistance R 13, the clock oscillation circuit S5 of CPU has been made of the clock source of the CPU of 455KHz 455KHz crystal oscillator, capacitor C 3, capacitor C 4, battery voltage sampling circuit S3 is made of resistance R 10, R11, keyboard input circuit S8 has constituted the instruction input circuit by button SW1, SW2, SW3, the scanning of button is come the flow process of control program by CPU.Information output circuit S4 controls YM12864i lattice liquid crystal module by the 4th, 11,12,13,14,15,16,17,18,24,25,26,27,28 pins of CPU, and various information are exported to the user.Resistance R 14 has constituted the Liquid Crystal Module reset circuit, and resistance R 15, diode D2 constitute Liquid Crystal Module turntable driving voltage control circuit.
This kind of instrument will be positioned at the outer current transformer of housing and open in use, be stuck on the phase cable of motor, press then to start button SW1, after the program self check for the treatment of is finished, press automatic keying SW2 again, and at this moment it just can begin automatic work.
Claims (3)
1. motor current registering instrument with teledata transmitting function, comprise the power module, input keyboard and the LCD that place in the housing, and place the outer motor start and stop control module of housing, it is characterized in that: also comprise a central control unit that constitutes by programmable controller, the current sampling circuit that constitutes by threephase current transformer and signal amplifier respectively and the data remote unit that constitutes by DF wireless data module in the described galvo-recorder; Wherein, described central control unit, receive A, the B, the C threephase motor current sampling signal that are transmitted by threephase current transformer respectively, the current signal that receives is handled by described central control unit after the built-in A/D converter of described central control unit carries out analog to digital conversion respectively; Carrying out the bi-directional data transmission by corresponding port between described central control unit and the described DF wireless data module connects; Described central control unit is exported control signal by built-in Motor Control signal output part to described motor start and stop control module.
2. a kind of motor current registering instrument with teledata transmitting function according to claim 1 is characterized in that: described programmable controller is a Siemens S7 series programmable controller.
3. a kind of motor current registering instrument according to claim 1 and 2 with teledata transmitting function, it is characterized in that: described galvo-recorder also comprises a CH375U disk storage module, and the signal output part to be stored of described central control unit is connected with the data receiver of described CH375U disk storage module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200862965U CN202024780U (en) | 2011-03-29 | 2011-03-29 | Motor current recorder with remote data transfer function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200862965U CN202024780U (en) | 2011-03-29 | 2011-03-29 | Motor current recorder with remote data transfer function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202024780U true CN202024780U (en) | 2011-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200862965U Expired - Fee Related CN202024780U (en) | 2011-03-29 | 2011-03-29 | Motor current recorder with remote data transfer function |
Country Status (1)
| Country | Link |
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| CN (1) | CN202024780U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102590697A (en) * | 2012-03-16 | 2012-07-18 | 武汉朗德电气有限公司 | Cable on-line monitoring device for wireless transmission |
| CN102636688A (en) * | 2012-04-27 | 2012-08-15 | 武汉电力职业技术学院 | Detector for unbalance ratio of three-phase current of low-voltage line |
-
2011
- 2011-03-29 CN CN2011200862965U patent/CN202024780U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102590697A (en) * | 2012-03-16 | 2012-07-18 | 武汉朗德电气有限公司 | Cable on-line monitoring device for wireless transmission |
| CN102636688A (en) * | 2012-04-27 | 2012-08-15 | 武汉电力职业技术学院 | Detector for unbalance ratio of three-phase current of low-voltage line |
| CN102636688B (en) * | 2012-04-27 | 2014-11-26 | 武汉电力职业技术学院 | Detector for unbalance ratio of three-phase current of low-voltage line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Kang Chaohai Inventor after: Huo Fengcai Inventor after: Dong Hongli Inventor after: Sun Qingnan Inventor after: Ren Weijian Inventor before: Kang Chaohai Inventor before: Huo Fengcai Inventor before: Dong Hongli Inventor before: Ren Weijian |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: KANG CHAOHAI HUO FENGCAI DONG HONGLI REN WEIJIAN TO: KANG CHAOHAI HUO FENGCAI DONG HONGLI SUN QINGNAN REN WEIJIAN |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111102 Termination date: 20120329 |