CN201945633U - Three-phase multifunctional electric energy monitor - Google Patents
Three-phase multifunctional electric energy monitor Download PDFInfo
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- CN201945633U CN201945633U CN2010206939218U CN201020693921U CN201945633U CN 201945633 U CN201945633 U CN 201945633U CN 2010206939218 U CN2010206939218 U CN 2010206939218U CN 201020693921 U CN201020693921 U CN 201020693921U CN 201945633 U CN201945633 U CN 201945633U
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Abstract
The utility model discloses a three-phase multifunctional electric energy monitor, which comprises a central processing module, a power module, an operating module, a communication module, a memory module, a real-time clock module and an electric energy collecting module. The power module, the operating module, the communication module, the memory module and the electric energy collecting module are in electric connection with the central processing module. A microprocessor is disposed in the central processing module. A differential circuit is arranged in the electric energy collecting module. The differential circuit is adopted to collect three-phase alternating current information and difference output voltage signals and current signals to the central processing module for sampling and processing so that measuring and monitoring of three-phase alternating current parameters are realized. The three-phase multifunctional electric energy monitor has simple structure, and adopts the differential circuit to process the three-phase alternating current and difference output the voltage signals and the current signals to the microprocessor of the central processing module for sampling and processing so that detection accuracy and stability are enhanced.
Description
Technical field
The utility model relates to a kind of electric energy detection instrument, is specifically related to a kind of three-phase multifunctional energy monitor instrument.
Background technology
Because power product harmonic wave, voltage fluctuation and voltage deviation etc. in the course of the work influences Electrical Safety, people also need the quality of power supply is monitored and analyzed, and therefore, the multifunctional electric energy monitor has produced under this background.The multifunctional electric energy monitor is the product that current microelectric technique combines with the electrotechnical measurement technology, existing traditional multifunctional electric energy monitor uses the real-time calculation mode of microprocessor hyperchannel quick sampling, can realize that these functions are significant for commercial Application to multinomial measurement function and some Real Time Control Function such as voltage, electric current, meritorious, idle, power factor, frequency, electric energy, harmonic waves.The multifunctional electric energy monitor is applicable to that reference frequency is the circuit of 50Hz (or 60Hz); can detect parameters such as voltage, electric current, active power, reactive power, power factor, frequency, electric energy, harmonic wave; also can attach switching value input and switching value output; realize certain protection or control function by switching value output; and can be used as monitoring module and low-voltage electrical apparatus is used, make the low-voltage electrical apparatus of not being with Based Intelligent Control have Based Intelligent Control and network control function.Because traditional multifunctional electric energy monitor uses the real-time calculation mode of microprocessor hyperchannel quick sampling, it need use resolution element such as amplifier etc. utilizations to amplify the sampling of biasing circuit realization to current/voltage, so ubiquity precision and the not high problem of stability, and microprocessor is not participated in the sampling and the processing (needing outer member sampling and processing) of current and voltage signals directly, therefore increased the quantity that the external discrete element uses, increased the circuit interference and reduced reliability.
The utility model content
The purpose of this utility model is at the problems referred to above weak point, the three-phase multifunctional energy monitor instrument of a kind of accuracy of detection height, good stability is provided, it adopts differential principle to gather electrical quantity, can directly adopt microprocessor samples to handle well, reduce and use element, improve accuracy of detection and stability.
In order to achieve the above object, the utility model is by the following technical solutions:
A kind of three-phase multifunctional energy monitor instrument, it comprises central processing module, power module, operational module, communication module, memory module, real-time clock module and electric energy acquisition module; Described power module, operational module, communication module, memory module and electric energy acquisition module and central processing module electrically connect; Be provided with microprocessor in the described central processing module; Described real-time clock module electrically connects memory module and central processing module; Described operational module is sent to central processing module with operation signal; The data storage that described memory module is gathered central processing module is preserved; Described communication module is carried out exchanges data by communication network and central processing module with other smart machine; Be provided with difference channel in the described electric energy acquisition module, its collection three-phase alternating current electrical information and differential output voltage signal and current signal to central processing module are sampled and are handled, and realize measurement and monitoring to the three-phase alternating current electrical quantity.
Above-mentioned difference channel comprises voltage sampling circuit that is used for output voltage signal and the current sampling circuit that is used for output current signal; The input end of described voltage sampling circuit is provided with resitstance voltage divider; The input end of described current sampling circuit is provided with current transformer.
Above-mentioned communication module is the RS485 communication module; Above-mentioned RS485 communication module adopts the communication of Modbus-RTU communications protocol.
Further, the utility model also comprises display module, and this display module and central processing module electrically connect, and central processing module shows measurement result and the setting data display screen by display module.
Further concrete, described display module is a LCD MODULE, and it adopts the liquid crystal display of micro-processor kernel module drive.
The aforesaid operations module is the touch controlled key operational module.
The utility model is simple in structure, and it adopts difference channel three-phase alternating current electric treatment and differential output voltage signal and current signal to the microprocessor of central processing module are sampled and to handle, and has improved accuracy of detection and stability.
Description of drawings
Fig. 1 is the utility model circuit theory sketch.
Below come the utility model is further described by the drawings and specific embodiments:
Embodiment
As shown in Figure 1, three-phase multifunctional energy monitor instrument described in the utility model, it comprises central processing module 1, power module 4, operational module 2, communication module 5, memory module 6, real-time clock module 7 and electric energy acquisition module 8; Described power module 4, operational module 2, communication module 5, memory module 6 and electric energy acquisition module 8 electrically connect with central processing module 1; Be provided with microprocessor in the described central processing module 1; Described real-time clock module 7 electrically connects memory module 6 and central processing module 1; Described operational module 2 is sent to central processing module 1 with operation signal; The data storage that described memory module 6 is gathered central processing module 1 is preserved; Described communication module 5 is carried out exchanges data by communication network and central processing module 1 with other smart machine; Be provided with difference channel in the described electric energy acquisition module 8, its collection three-phase alternating current electrical information and differential output voltage signal and current signal to central processing module 1 are sampled and are handled, realization is to the measurement and the monitoring of three-phase alternating current electrical quantity, and voltage signal and current signal precision and stability are high after the voltage signal of difference output and the current signal ratio expansion bias treatment.Being specially the microprocessor built-in module samples to difference input voltage signal and current signal and handles, thereby reduced separation circuit, improved the reliability and the interference free performance of system, improved accuracy of detection and stability, and reduction the cost of system, power consumption and volume.And existing energy monitor instrument needs outer member that the voltage signal by amplifying biasing and current signal are sampled and handles its accuracy of detection and less stable.
Above-mentioned difference channel comprises voltage sampling circuit that is used for output voltage signal and the current sampling circuit that is used for output current signal; The input end of described voltage sampling circuit is provided with resitstance voltage divider; The input end of described current sampling circuit is provided with current transformer.
Above-mentioned communication module 5 is the RS485 communication module; Above-mentioned RS485 communication module adopts the communication of Modbus-RTU communications protocol.
Further, the utility model also comprises display module 3, and this display module and central processing module 1 electrically connects, and central processing module 1 shows measurement result and the setting data display screen by display module.Further concrete, described display module is a LCD MODULE, and it is provided with LCDs and it adopts the liquid crystal display of micro-processor kernel module drive.
Below come the utility model is further described by concrete application principle:
Three-phase multifunctional energy monitor instrument described in the utility model and active 485, communication manager and system monitoring machine are formed a complete multifunctional electric energy monitoring system, and this system can be provided with a plurality of three-phase multifunctional energy monitor instrument and different monitor nodes be carried out the detection of real time data.The utility model is used for parameters such as monitoring current, voltage, active power, reactive power, power factor, statistical function and multiple rate function with historical day, month electric degree, can make by communication module the calling of monitoring host computer in real time and replying, make things convenient for the staff to understand the history run situation that reaches in real time of each monitoring point timely.The user imports solicited message (as the inquiry and relevant setting of user to system) to central processing module by the touch controlled key of touch controlled key operational module and carries out Request Processing.LCD MODULE is provided with LCDs, finishes the demonstration of energy monitor instrument related content.Be provided with difference channel in the electric energy acquisition module, the three-phase alternating current electrical information of its collection power module and differential output voltage signal and current signal to central processing module are sampled and are handled, in order to realize the measurement to electrical quantitys such as voltage, electric current, active power, reactive power, power factors.Communication module is carried out exchanges data by communication network and central processing module with other smart machine such as outer monitoring main frame etc., in order to finish monitoring host computer real time data of the present utility model is inquired about.Central processing module is mainly finished following several work: (1) is to the electric current of difference input, the sampling and the processing of voltage signal; (2) input of carrying out touch controlled key detects; (3) drive LCDs and carry out the demonstration of related electrical parameters; (4) adopt spi bus to store or read the memory module historical data, store or read the memory module historical data by the I2C bus; (5) read or revise real-time clock module information by the I2C bus; (6) carry out exchanges data by the calling of communication module response monitoring main frame.
The utility model realizes providing voltage, electric current, active power, reactive power, power factor, electric energy, the four-quadrant of high precision, high reliability to gain merit and idle electric degree is monitored in real time, and multiple rate function and historical day, month electric degree query function are provided.It has the following advantages:
1) microprocessor of central processing module employing super low-power consumption is handled electric current, the voltage of difference input and is sampled, thereby realizes the sampling with high precision to electric current, voltage, and meritorious precision can reach 0.5 grade.
2) microprocessor of the built-in liquid crystal driver of employing super low-power consumption is as the master controller of multifunctional electric energy monitor, and reducing needs the liquid crystal drive element of setting in addition.
3) communication module adopts one road RS-485 communication interface and ModBus-RTU communications protocol, can reply monitoring host computer in real time.
4) electric energy acquisition of multifunctional electric energy monitor part, liquid crystal drive part are finished drive controlling by the internal module of microprocessor, therefore reduced separation circuit, improve the reliability and the interference free performance of system, and greatly reduced cost, power consumption and the volume of system.
Claims (7)
1. three-phase multifunctional energy monitor instrument is characterized in that: comprise central processing module, power module, operational module, communication module, memory module, real-time clock module and electric energy acquisition module; Described power module, operational module, communication module, memory module and electric energy acquisition module and central processing module electrically connect in the described central processing module and are provided with microprocessor; Described real-time clock module electrically connects memory module and central processing module; Described operational module is sent to central processing module with operation signal; The data storage that described memory module is gathered central processing module is preserved; Described communication module is carried out exchanges data by communication network and central processing module with other smart machine; Be provided with difference channel in the described electric energy acquisition module, its collection three-phase alternating current electrical information and differential output voltage signal and current signal to central processing module are sampled and are handled, and realize measurement and monitoring to the three-phase alternating current electrical quantity.
2. three-phase multifunctional energy monitor instrument according to claim 1 is characterized in that: described difference channel comprises voltage sampling circuit that is used for output voltage signal and the current sampling circuit that is used for output current signal; The input end of described voltage sampling circuit is provided with resitstance voltage divider; The input end of described current sampling circuit is provided with current transformer.
3. three-phase multifunctional energy monitor instrument according to claim 1 is characterized in that: described communication module is the RS485 communication module.
4. three-phase multifunctional energy monitor instrument according to claim 3 is characterized in that: described RS485 communication module adopts the communication of Modbus-RTU communications protocol.
5. three-phase multifunctional energy monitor instrument according to claim 1 is characterized in that: also comprise display module, itself and central processing module electrically connect.
6. three-phase multifunctional energy monitor instrument according to claim 5 is characterized in that: described display module is a LCD MODULE.
7. three-phase multifunctional energy monitor instrument according to claim 1 is characterized in that: described operational module is the touch controlled key operational module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206939218U CN201945633U (en) | 2010-12-31 | 2010-12-31 | Three-phase multifunctional electric energy monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206939218U CN201945633U (en) | 2010-12-31 | 2010-12-31 | Three-phase multifunctional electric energy monitor |
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| Publication Number | Publication Date |
|---|---|
| CN201945633U true CN201945633U (en) | 2011-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206939218U Expired - Lifetime CN201945633U (en) | 2010-12-31 | 2010-12-31 | Three-phase multifunctional electric energy monitor |
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| Country | Link |
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| CN (1) | CN201945633U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103823107A (en) * | 2012-11-19 | 2014-05-28 | 苏州工业园区新宏博通讯科技有限公司 | Ammeter |
| CN104931774A (en) * | 2015-07-03 | 2015-09-23 | 广东美的厨房电器制造有限公司 | An electric appliance electric quantity monitor system and a monitor method |
| CN107015512A (en) * | 2017-06-02 | 2017-08-04 | 国网山东省电力公司烟台供电公司 | A kind of intelligent electric power steward system |
-
2010
- 2010-12-31 CN CN2010206939218U patent/CN201945633U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103823107A (en) * | 2012-11-19 | 2014-05-28 | 苏州工业园区新宏博通讯科技有限公司 | Ammeter |
| CN104931774A (en) * | 2015-07-03 | 2015-09-23 | 广东美的厨房电器制造有限公司 | An electric appliance electric quantity monitor system and a monitor method |
| CN107015512A (en) * | 2017-06-02 | 2017-08-04 | 国网山东省电力公司烟台供电公司 | A kind of intelligent electric power steward system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110824 |
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| CX01 | Expiry of patent term |