CN202522635U - Comprehensive electrical parameter measuring device - Google Patents
Comprehensive electrical parameter measuring device Download PDFInfo
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- CN202522635U CN202522635U CN2011205136067U CN201120513606U CN202522635U CN 202522635 U CN202522635 U CN 202522635U CN 2011205136067 U CN2011205136067 U CN 2011205136067U CN 201120513606 U CN201120513606 U CN 201120513606U CN 202522635 U CN202522635 U CN 202522635U
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- measuring device
- parameter measuring
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Abstract
A comprehensive electrical parameter measuring device is used for monitoring and measuring comprehensive electrical parameters. The device comprises a processor mainboard provided with a measuring chip, a main processor is provided with a voltage signal input port and a current signal input port; a microprocessor connected with the measuring chip through an SPI interface, the microprocessor is provided with a display output port and a control output port; a power supply module connected with the processor mainboard and the microprocessor; a storage chip connected with the microprocessor through an I2C interface; and an I/O output board connected with the microprocessor. The comprehensive electrical parameter measuring device is various in suitable types, high in measuring precision, large in measuring scope, and flexible in configuration, three-phase three wires, three-phase four wires and various parameters can be measured, various methods for realizing communication with a host computer can be realized, and multifunction of data processing and outputting can be realized.
Description
Technical field
The utility model belongs to the measurement technology of electricity consumption electric energy, concrete relate to a kind ofly be used to gain merit, reactive energy, meritorious, reactive power, comprehensive electrical quantity such as voltage, electric current, power factor, phase angle, frequency is measured the comprehensive electrical parameter measuring device of monitoring.
Background technology
Electric energy has all obtained to use widely in industrial and agricultural production and other every profession and trades in the modern society, and parameters of electric power is generating change of state at any time in use.Non-linear, the impact and the unbalancedness of some load worsen the power supply quality of electrical network day by day, give life, produce and bring huge harm.If the electric current of electrical network, brownout; Consumer can not be given full play to its effect, have in addition cisco unity malfunction; Otherwise, will make the electricity consumption device fails, even burn.Therefore the parameters of electric power of electrical network is monitored, guaranteed efficient, the safe operation with electrical network that make full use of of electric energy, imperative.Through the accurate metering of electric energy being examined the economy of electricity consumption, through to meritorious, reactive power, the measurement monitoring of comprehensive electrical quantity such as voltage, electric current, power factor, phase angle, frequency can be investigated and use electricity quality.According to various parameters of electric power the parameter of consumer is set, thereby makes consumer steady, reliably operation.This electric parameter measurement system; In very fast again in recent years development; A lot of measuring systems all possess: the measurement of each phase voltage in the three-phase alternating current loop, electric current, active power, reactive power, applied power, power factor, frequency, active energy, the various parameters of reactive energy, and carry out exchanges data in host computer through RS-232C or RS-485 scheme.But carry out data transmission through RS-232C or RS-485 scheme, the short and remote data transmission poor stability of its transmission range, and the parameters of electric power data acquisition that is not suitable for working under the lowered in field environment, these shortcomings are restricting the development of power measurement always.
The utility model content
The utility model provides a kind of advanced person of possessing skills; Measuring accuracy is high, and measurement range is big, the comprehensive electrical parameter measuring device of advantages such as flexible configuration; It can realize the measurement of phase three-wire three and the various parameters of three-phase and four-line, and can realize that multiple mode and host computer communicate.Can realize the multifunction of data processing and output.
The technical scheme that the utility model adopted is following:
A kind of comprehensive electrical parameter measuring device is used for the control measurement of comprehensive electrical quantity, it is characterized in that said comprehensive electrical parameter measuring device comprises:
Processor main board is provided with measured chip, is connected with voltage signal input port and current signal input port on the said processor main board;
Microprocessor is connected through the SPI interface with said measured chip, and this microprocessor is connected with and shows output port and control output end mouth;
Storage chip is passed through I with said microprocessor
2C interface connects;
Power module, said power module connection is provided with said processor main board and microprocessor;
The I/O output board, connection is provided with said microprocessor.
Concretely, said voltage signal input port comprises a resistor voltage divider network, and said resistor voltage divider network connects said measured chip through voltage channel.
Said voltage signal input port comprises the voltage sampling circuit that a high voltage potential transformer and is connected with this high voltage potential transformer, and said voltage sampling circuit is connected setting through resistor voltage divider network with measured chip.
Said current signal input port comprises a low-voltage, high-current mutual inductor sample device or normalized current sensor sample device, and said low-voltage, high-current mutual inductor sample device or normalized current sensor sample device are connected setting through current channel with measured chip.
Said current signal input port comprises a high-tension current inductor; Said high-tension current inductor connection is provided with a standard current transformer, and this standard current transformer is connected setting through low-voltage, high-current mutual inductor sample device or normalized current sensor sample device with measured chip.
Said demonstration output port comprises a LCD output port.
Said demonstration output port comprises a LED charactron display driver interface, and said LED charactron display driver interface connection is provided with one group of digital display gauge outfit.
Said control output end mouth comprises standard RS-232C interface or/and standard RS-485 multi computer communication interface.
Said control output end mouth comprises a data transmission device; Said data transmission device passes through standard RS-232C interface or/and standard RS-485 multi computer communication interface is connected setting with microprocessor; And, carry out communication through the Internet and host computer and be connected through GPRS network connection the Internet.
Said comprehensive electrical parameter measuring device further comprises a control output unit, and this control output unit has the relay export structure that two-way photoelectricity is isolated, and every road has one and often opens a normally closed contact;
Said comprehensive electrical parameter measuring device further comprises a data storage device, and this data storage device is a ferroelectric nonvolatile property storer.
This comprehensive electrical parameter measuring device mainly comprises processor main board, microprocessor, power module and peripheral voltage, current sensor.Voltage signal is transformed to the voltage channel that the 0-1000mv signal is input to measured chip through the resistor voltage divider network that is provided with on the processor main board; The signal that current signal is transformed to 0-1000mv through current transformer and pull-up resistor is input to the electric current input channel of measured chip; Change the measured digital signal of representative into through the inner ∑-Δ ADC analog to digital conversion circuit of measured chip again; Microprocessor reads these raw data through the SPI interface and goes forward side by side that the line number value is demarcated and unit conversion, shows and through serial ports data is sent to host computer or GPRS wireless data acquisition system for LCD.Power module provides three-phase redundant each other power supply backup, and any phase power supply power-fail does not influence system's operate as normal.The I/O output board can be followed the tracks of adjustment through certain control algolithm according to the actual value and the setting value of tested electric parameter, the for example load of power factor compensation and electric current, power control.Its incoming end can adapt to phase three-wire three or two kinds of access waies of three-phase and four-line.
This comprehensive electrical parameter measuring device can whenever be gathered a secondary data and process processing conversion centralized displaying on display screen through serial RS-485 communication interface at a distance from 2 seconds.Also can connect many ammeters of monitoring through a computer; Each ammeter all has unique table number address; Can also send and order is set the operational factor of each slave computer such as device number (table number), electrical energy pulse constant, electric current, voltage transformer (VT) no-load voltage ratio are provided with to adapt to different measurement requirement, simultaneously can also on-line calibration slave computer real-time clock.
Adopt this comprehensive electrical parameter measuring device that low pressure (is lower than 1KV; Typical case 380V/220V); Little electric current (below the 30A) is when loaded line is measured, and current signal can adopt the special-purpose current transformer of the inner ammeter of installing to sample, and the resistor voltage divider network that the 380V/220V voltage signal is directly inputted on the processor main board is sampled; Realize electric energy metrical, storage, and to the accurate measurement of active power, reactive power, voltage, electric current, power factor, phase angle, frequency.
Low pressure (is lower than 1KV; Typical case 380V/220V) large current load (more than the 30A) is when loaded line is measured: current signal inserts processor main board through a low-voltage, high-current mutual inductor (secondary output 5A); The resistor voltage divider network that the 380V/220V voltage signal is directly inputted on the processor main board is sampled, and should multiply by current transformer ratio again with measured value and just can obtain measurement result accurately this moment.
To high pressure (be higher than 1KV, typical case like 1.14KV, 3KV; 6KV, 10KV is 35KV) under the application conditions: the sampling of voltage signal at this moment; Be to convert high voltage into 100V through high voltage potential transformer to insert voltage sampling circuit again; Current signal adopts high-tension current inductor to be transformed to 5A, inserts standard current transformer again, and should multiply by voltage transformer (VT) no-load voltage ratio summation current transformer no-load voltage ratio this moment with measured value.
Its LCD digital tube display device that shows that output port connects can show " table number ", " pulse constant ", " current date ", " current time ", gets into the Automatic Cycle show state then, shows three-phase successively, closes phase active power, three-phase, closes the phase reactive power; Three-phase, close the phase applied power, three-phase voltage effective value, three-phase current effective value; Three-phase activity coefficient, three-phase phase angle, frequency; Three-phase, closing the phase active energy, three-phase, close the phase reactive energy and show, is current date then; Current time, table number, pulse constant.The local multi computer communication interface of its configurable standard RS-485 is supported the nearly concentrated monitoring of 128 ammeters,, can carry out high-speed asynchronous serial multi computer communication with swap data with host computer.These facility have standard RS-232C interface, connect GPRS wireless module and host computer wireless data monitoring module, realize the remote real-time data monitoring.
The beneficial effect of the utility model is that this comprehensive electrical parameter measuring device application type is various, and measuring accuracy is high; Measurement range is big; Flexible configuration, it can realize the measurement of phase three-wire three and the various parameters of three-phase and four-line, and can realize that multiple mode and host computer communicate.Can realize the multifunction of data processing and output.
Description of drawings
Fig. 1 is the composition frame diagram of the utility model embodiment.
Embodiment
As shown in Figure 1; This comprehensive electrical parameter measuring device is used for the control measurement of comprehensive electrical quantity; It mainly comprises: processor main board 10, be provided with measured chip 11, and be connected with voltage signal input port 13 and current signal input port 12 on the processor main board 10; Microprocessor 20 is connected through SPI interface 18 with measured chip 11, and this microprocessor 20 is connected with and shows output port and control output end mouth; Data storing chip 27, this chip and microprocessor 20 pass through I
2C interface connects; Power module 30, power module 30 connections are provided with said processor main board 10 and microprocessor 20; The I/O output board, connection is provided with microprocessor and LCDs 22.
Wherein, voltage signal input port 13 comprises:
One resistor voltage divider network 17, resistor voltage divider network connects measured chip 11 through voltage channel;
In addition, the current signal input port comprises:
One low-voltage, high-current mutual inductor sample device 16, normalized current sensor sample device 15, normalized current sensor sample device 15 is connected setting through current channel with measured chip.
Show that output port comprises:
One LED charactron display driver interface, this LED charactron display driver interface connection is provided with one group of digital display gauge outfit 21.
The control output end mouth comprises standard RS-232C interface 25 and standard RS-485 multi computer communication interface 23.25 connections of standard RS-232C interface are provided with wireless module 26, and 23 connections of standard RS-485 multi computer communication interface are provided with body host computer 24.
Claims (10)
1. comprehensive electrical parameter measuring device is used for the control measurement of comprehensive electrical quantity, it is characterized in that said comprehensive electrical parameter measuring device comprises:
Processor main board is provided with measured chip, is connected with voltage signal input port and current signal input port on the said processor main board;
Microprocessor is connected through the SPI interface with said measured chip, and this microprocessor is connected with and shows output port and control output end mouth;
Storage chip is passed through I with said microprocessor
2C interface connects;
Power module, said power module connection is provided with said processor main board and microprocessor;
The I/O output board, connection is provided with said microprocessor.
2. comprehensive electrical parameter measuring device according to claim 1 is characterized in that said voltage signal input port comprises a resistor voltage divider network, and said resistor voltage divider network connects said measured chip through voltage channel.
3. comprehensive electrical parameter measuring device according to claim 1; It is characterized in that said voltage signal input port comprises a high voltage potential transformer and a voltage sampling circuit that is connected with this high voltage potential transformer, said voltage sampling circuit is connected setting through resistor voltage divider network with measured chip.
4. comprehensive electrical parameter measuring device according to claim 1; It is characterized in that said current signal input port comprises a low-voltage, high-current mutual inductor sample device or normalized current sensor sample device, said low-voltage, high-current mutual inductor sample device or normalized current sensor sample device are connected setting through current channel with measured chip.
5. comprehensive electrical parameter measuring device according to claim 1; It is characterized in that said current signal input port comprises a high-tension current inductor; Said high-tension current inductor connection is provided with a standard current transformer, and this standard current transformer is connected setting through low-voltage, high-current mutual inductor sample device or normalized current sensor sample device with measured chip.
6. comprehensive electrical parameter measuring device according to claim 1 is characterized in that said demonstration output port comprises a LCD output port.
7. comprehensive electrical parameter measuring device according to claim 1 is characterized in that said demonstration output port comprises a LED charactron display driver interface, and said LED charactron display driver interface connection is provided with one group of digital display gauge outfit.
8. comprehensive electrical parameter measuring device according to claim 1 is characterized in that said control output end mouth comprises standard RS-232C interface or/and standard RS-485 multi computer communication interface.
9. comprehensive electrical parameter measuring device according to claim 8; It is characterized in that said control output end mouth comprises a data transmission device; Said data transmission device passes through standard RS-232C interface or/and standard RS-485 multi computer communication interface is connected setting with microprocessor; And, carry out communication through the Internet and host computer and be connected through GPRS network connection the Internet.
10. comprehensive electrical parameter measuring device according to claim 1; It is characterized in that said comprehensive electrical parameter measuring device further comprises a control output unit; This control output unit has the relay export structure that two-way photoelectricity is isolated, and every road has one and often opens a normally closed contact;
Said comprehensive electrical parameter measuring device further comprises a data storage device, and this data storage device is a ferroelectric nonvolatile property storer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205136067U CN202522635U (en) | 2011-12-12 | 2011-12-12 | Comprehensive electrical parameter measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205136067U CN202522635U (en) | 2011-12-12 | 2011-12-12 | Comprehensive electrical parameter measuring device |
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| Publication Number | Publication Date |
|---|---|
| CN202522635U true CN202522635U (en) | 2012-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011205136067U Expired - Fee Related CN202522635U (en) | 2011-12-12 | 2011-12-12 | Comprehensive electrical parameter measuring device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499745A (en) * | 2013-09-26 | 2014-01-08 | 中国恩菲工程技术有限公司 | Electrode impedance measuring system of six-electrode electric furnace |
| CN104198871A (en) * | 2014-09-26 | 2014-12-10 | 重庆梅安森科技股份有限公司 | Electronic device tester and testing method thereof |
| CN106291036A (en) * | 2016-08-11 | 2017-01-04 | 杭州仕邦电力科技有限公司 | Integral type low voltage monitoring device |
| CN106370928A (en) * | 2016-08-25 | 2017-02-01 | 深圳市思达仪表有限公司 | Electronic watt-hour meter and measuring method thereof |
| CN107015092A (en) * | 2017-06-15 | 2017-08-04 | 浙江恒电水利科技有限公司 | A kind of microcomputer comprehensive monitoring protector and monitoring protection method |
| CN107957525A (en) * | 2018-01-16 | 2018-04-24 | 西安科技大学 | Electric furnace electric parameter on-line measurement system |
-
2011
- 2011-12-12 CN CN2011205136067U patent/CN202522635U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499745A (en) * | 2013-09-26 | 2014-01-08 | 中国恩菲工程技术有限公司 | Electrode impedance measuring system of six-electrode electric furnace |
| CN104198871A (en) * | 2014-09-26 | 2014-12-10 | 重庆梅安森科技股份有限公司 | Electronic device tester and testing method thereof |
| CN104198871B (en) * | 2014-09-26 | 2017-02-15 | 重庆梅安森科技股份有限公司 | Electronic device tester and testing method thereof |
| CN106291036A (en) * | 2016-08-11 | 2017-01-04 | 杭州仕邦电力科技有限公司 | Integral type low voltage monitoring device |
| CN106370928A (en) * | 2016-08-25 | 2017-02-01 | 深圳市思达仪表有限公司 | Electronic watt-hour meter and measuring method thereof |
| CN107015092A (en) * | 2017-06-15 | 2017-08-04 | 浙江恒电水利科技有限公司 | A kind of microcomputer comprehensive monitoring protector and monitoring protection method |
| CN107957525A (en) * | 2018-01-16 | 2018-04-24 | 西安科技大学 | Electric furnace electric parameter on-line measurement system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20131212 |