CN103018638A - Automatic power frequency measuring and controlling device with touch screen - Google Patents
Automatic power frequency measuring and controlling device with touch screen Download PDFInfo
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- CN103018638A CN103018638A CN 201110284549 CN201110284549A CN103018638A CN 103018638 A CN103018638 A CN 103018638A CN 201110284549 CN201110284549 CN 201110284549 CN 201110284549 A CN201110284549 A CN 201110284549A CN 103018638 A CN103018638 A CN 103018638A
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Abstract
The invention relates to an automatic power frequency measuring and controlling device with a touch screen. The automatic power frequency measuring and controlling device comprises a programmable logic controller (PLC), the touch screen, a data acquisition module and a voltage adjuster, wherein the data acquisition module comprises a voltage signal acquisition module and a current signal acquisition module; the voltage signal acquisition module comprises a capacitive voltage divider which acquires voltage signals and transmits the voltage signals to a voltage sensor, the sensor converts the signals into standard signals and transmits the standard signals to an analog/digital (A/D) module of the PLC through a conditioning circuit, and the standard signals are finally displayed by an interface of the touch screen; the current signal acquisition module comprises a current transformer which acquires current signals and transmits the current signals to a current sensor, the sensor converts the current signals into standard signals and transmits the standard signals to the A/D module of the PLC through the conditioning circuit, and the standard signals are finally displayed through the interface of the touch screen; and analog signals are output through a digital/analog (D/A) module according to control signals of the PLC and are used for controlling the voltage adjusting speed of the voltage adjuster. The automatic power frequency measuring and controlling device provided by the invention is high in measuring speed, good in stability and high in measurement accuracy.
Description
Technical field
The present invention relates to a kind of industrial frequency withstand voltage measure and control device based on industrial computer and PLC, be applied to power industry and be used for ac voltage withstanding, the measurement of dried wet flashover discharge test, control operation.
Background technology
The industrial frequency AC withstand voltage test is exactly that equipment is applied certain voltage, and keep a period of time, tolerate various superpotential abilities to investigate power equipment, industrial frequency AC withstand voltage test amplitude, waveform, frequency and in the equal realistic ruuning situation of the distribution of Electric Power Equipment Insulation builtin voltage, therefore can effectively find the insulation defect of electrical equipment in operational process, that to tolerate various superpotential abilities the strictest for the examination Electric Power Equipment Insulation, the most effective way is the effective means that guarantees equipment safety operation.
Measure and control device is the hinge of a whole set of industrial frequency AC pressure-resistant equipment, and its stability and degree of accuracy directly have influence on test effect, and measure and control device in the market often stability, accuracy performance is unsatisfactory, needs further improvement.
Summary of the invention
The present invention is directed to defects, purpose is to provide a kind of and has that measuring speed is fast, good stability, power frequency automatic measurement and control device that measuring accuracy is high.
The technical solution used in the present invention is for this reason: the present invention includes touch-screen, data acquisition module, pressure regulator, described data acquisition module comprises voltage signal acquisition module and current signal collection module; Described voltage signal acquisition module: comprise capacitive divider, capacitive divider gathers voltage signal and is delivered to voltage sensor, and sensor reaches the A/D module of PLC after signal is converted into standard signal process modulate circuit, and finally passes through the industrial computer interface display; Described current signal collection module: comprise current transformer, current transformer gathers current signal and is delivered to current sensor, sensor reaches the A/D module of PLC after current signal is converted into standard signal process modulate circuit, and finally passes through the industrial computer interface display; The control signal of described PLC is by the pressure regulation speed of D/A module outputting analog signal control pressure regulator.
Connect lightning-proof converter by cable on the described touch screen of industrial personal computer.
Advantage of the present invention is: the present invention is by data collecting module collected voltage signal, current signal, and the processing by a series of modules, formation is to the mensuration of equipment electric property, pressure regulator of the present invention can be adjusted voltage and pressure regulation speed according to actual needs simultaneously, can detect fast, accurately; Simultaneously the present invention is provided with lightning-proof converter, guarantees that measure and control device is not damaged in thunder and lightning.
Description of drawings
Fig. 1 is industrial frequency touch screen TT﹠C system measure portion electrical diagram.
Fig. 2 is that PLC is in the relay wiring schematic diagram.
Fig. 3 touch-screen and PLC communication block diagram.
Fig. 4 pressure regulator buck speed control block diagram.
Embodiment
As shown in Figure 1, gather voltage signal by capacitive divider and be delivered to voltage sensor, sensor is converted into standard signal to signal through reaching the A/D module of PLC behind the modulate circuit, finally shows through PLC, touch-screen programmed process; Gather current signal by current transformer and be delivered to current sensor, sensor is converted into standard signal to current signal through reaching the A/D module of PLC behind the modulate circuit, finally shows through PLC, touch-screen programmed process.
As shown in Figure 2, whole control is sent signal controlling PLC switching value by touch-screen, by PLC switching value pilot relay, and again by the Control contactor, thus the control whole system.
As shown in Figure 3, then touch-screen is connected to 485 lightning-proof converters by 232 cables, and lightning-proof converter is directly received on the touch-screen.
As shown in Figure 4, the voltage signal control intelligent pressure regulating module output voltage of a 0 ~ 5V of the D/A module of PLC output, thus the control motor speed reaches the purpose that changes pressure regulation speed with this.
The present invention controls and adopts D/A module controls intelligent pressure regulating module output voltage motor speed processed, thereby reach the purpose that changes pressure regulation speed, system begins to boost according to predeterminated voltage, pressure-resistant time and speed first, make voltage rise to preset value (meeting national standard) by the PLC programming Control, beginning is withstand voltage after reaching preset value, pressure-resistant time arrives, and Self-pressurizing agri returns zero, separating brake.
The S7-200 series of PLC is adopted in field control, according to the process completion signal acquisition and processing that designs, then gather and output signal by D/A converter module EM231 and EM235, thereby whole industrial frequency AC pressurized system is controlled in real time, and program is carried out observing and controlling and interface programming take Siemens S7-200 series of PLC and MCGS as development platform.
Claims (2)
1. the industrial frequency touch screen automatic measurement and control device is characterized in that, comprises touch-screen, data acquisition module, pressure regulator, and described data acquisition module comprises voltage signal acquisition module and current signal collection module; Described voltage signal acquisition module: comprise capacitive divider, capacitive divider gathers voltage signal and is delivered to voltage sensor, and sensor reaches the A/D module of PLC after signal is converted into standard signal process modulate circuit, and finally passes through the industrial computer interface display; Described current signal collection module: comprise current transformer, current transformer gathers current signal and is delivered to current sensor, sensor reaches the A/D module of PLC after current signal is converted into standard signal process modulate circuit, and finally passes through the industrial computer interface display; The control signal of described PLC is by the pressure regulation speed of D/A module outputting analog signal control pressure regulator.
2. industrial frequency touch screen automatic measurement and control device according to claim 1 is characterized in that, connects lightning-proof converter by cable on the described touch screen of industrial personal computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110284549 CN103018638A (en) | 2011-09-23 | 2011-09-23 | Automatic power frequency measuring and controlling device with touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110284549 CN103018638A (en) | 2011-09-23 | 2011-09-23 | Automatic power frequency measuring and controlling device with touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103018638A true CN103018638A (en) | 2013-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110284549 Pending CN103018638A (en) | 2011-09-23 | 2011-09-23 | Automatic power frequency measuring and controlling device with touch screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103018638A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105278440A (en) * | 2014-08-29 | 2016-01-27 | 扬州市鑫源电气有限公司 | Touch screen automatic control device for screening silicon particles in high voltage silicon stack |
| CN107449950A (en) * | 2017-09-15 | 2017-12-08 | 苏州华电电气股份有限公司 | Touch intelligent pressure regulating resonance control cabinet |
-
2011
- 2011-09-23 CN CN 201110284549 patent/CN103018638A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105278440A (en) * | 2014-08-29 | 2016-01-27 | 扬州市鑫源电气有限公司 | Touch screen automatic control device for screening silicon particles in high voltage silicon stack |
| CN107449950A (en) * | 2017-09-15 | 2017-12-08 | 苏州华电电气股份有限公司 | Touch intelligent pressure regulating resonance control cabinet |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130403 |