CN201697959U - Industrial electric energy network node sensor - Google Patents
Industrial electric energy network node sensor Download PDFInfo
- Publication number
- CN201697959U CN201697959U CN2010202398932U CN201020239893U CN201697959U CN 201697959 U CN201697959 U CN 201697959U CN 2010202398932 U CN2010202398932 U CN 2010202398932U CN 201020239893 U CN201020239893 U CN 201020239893U CN 201697959 U CN201697959 U CN 201697959U
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- sensor
- electric energy
- microprocessor
- communication interface
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The utility model relates to an industrial electric energy network node sensor, and belongs to the technical field of electric energy monitoring data acquisition sensors. The industrial electric energy network node sensor consists of a sensor casing, a three-phase current sensor, a three-phase voltage sensor, a microprocessor, a power source, an interface circuit and a communication interface, one side of the microprocessor is connected with the three-phase current sensor and the three-phase voltage sensor while the other side is connected with the interface circuit, and the interface circuit is connected with the communication interface through a connecting wire. After the microprocessor processes current and voltage signals acquired by the three-phase current sensor and the three-phase voltage sensor, the signals are sent to the communication interface through the interface circuit via microprocessor software and then are transmitted externally. The industrial electric energy network node sensor resolves problems that an existing electric energy network sensor is higher in cost and poor in flexibility and generality, only can be used for specific operation environments and is not easy to realize remote monitoring, data sharing and long-term assessment and forecast, and field equipment does not have real-time analysis capacity. The sensor can be assembled into an electric energy testing network in fields.
Description
Technical field:
The utility model relates to a kind of industrial electric energy sensor network node, belongs to energy monitor data sampling sensor technical field.
Background technology:
In the commercial production real process of China, exist in a large number the occasion that need measure and monitor electric energy.As electric energy metrical, power grid quality monitoring, efficiency of power-driven equipment assessment etc.
Traditional energy monitor design adopts industrial computer to be equipped with data collecting card mostly, realize the data acquisition and the analysis of electric energy, mainly there are following some shortcomings in these energy monitor equipment: 1, owing to adopt various computing machines as the field monitoring analysis tool, cause equipment cost higher; 2, the dirigibility of equipment disposition, versatility are poor, often can only be used for specific operating environment; 3, telecommunication capabilities is limited, be difficult for to realize remote monitoring, data sharing and assesses for a long time and predict; 4, real-time is poor, and the time frequency analysis means fall behind, and do not possess tracking and capture ability to ringing and transient state harmonic wave; 5, field apparatus does not possess real-time analytical capability, and a large amount of sampled datas all will send special analysis tool to and go to handle, and cause the storage capacity requirement of field apparatus very big.
Summary of the invention:
The purpose of this utility model is, a kind of low cost of manufacture, highly versatile is provided, has a plurality of standard I-O interfaces, can realizes the automatic network-building of remote monitoring and energy monitor point; Make sensor have standardization, modularization, seriation structure, can adapt to the industrial electric energy sensor network node of various application scenarios.
The utility model is to realize above-mentioned purpose by the following technical solutions:
This industry electric energy sensor network node is made of sensor housing, three-phase current sensor, three-phase voltage sensor, microprocessor, power supply, interface circuit and communication interface, it is characterized in that: three-phase current sensor, three-phase voltage sensor, microprocessor, power supply and interface circuit are housed in the sensor housing, and communication interface is equipped with in the side of sensor housing; One side of microprocessor connects three-phase current sensor and three-phase voltage sensor, the opposite side connecting interface circuit of microprocessor, and interface circuit is connected with communication interface by connecting line.
Described communication interface is RS-232 communication interface, RS-485 communication interface and GPRS/CDMA module interface
The utility model beneficial effect compared with prior art is:
1, passes through electric energy sensing technology and the organic combination of wireless network node technology, adopt integrated method for designing, make electrical power sensor possess standard I-O interface, by the computing of built-in embedded microprocessor, the various monitoring power consumption parameter that output complies with the national standard requirements.Integration standard communication interface and wireless communication module interface, the automatic network-building of realization energy monitor point is convenient to the realization of systemic-function.
2, can adapt to various application scenarios with sensor is purpose, adopts the hardware and software structure of standardization, modularization, seriation method design sensor.Sensing system can be under the control of core missions scheduler module, according to the sensor configuration parameter that is provided with, by the modular software and hardware of flexible configuration, finish the selection of sensor function, make sensor possess population parameter flexible setting function, the user only needs the electric energy detection point that adapts to self application scenario and detection requirement by preestablishing or the configuration parameter of remotely modifying sensor, just can making up.
Description of drawings:
Fig. 1 is the structural representation of industrial electric energy sensor network node;
Fig. 2 is the circuit block diagram of industrial electric energy sensor network node;
Fig. 3 is the communication interface terminals subgraph of industrial electric energy sensor network node.
Among the figure: 1, three-phase current sensor, 2, the three-phase voltage sensor, 3, microprocessor, 4, power supply, 5, interface circuit, 6, communication interface, 7, sensor housing.
Embodiment:
This industry electric energy sensor network node is made of sensor housing 7, three-phase current sensor 1, three-phase voltage sensor 2, microprocessor 3, power supply 4, interface circuit 5 and communication interface 6.Three-phase current sensor 1, three-phase voltage sensor 2, microprocessor 3, power supply 4 and interface circuit 5 are equipped with in bottom in the sensor housing 7, one side of microprocessor 3 connects three-phase current sensor 1 and three-phase voltage sensor 2, the opposite side connecting interface circuit 5 of microprocessor 3, interface circuit 5 is connected with communication interface 6 by connecting line.Communication interface 6 is contained in the side of sensor housing 7, and communication interface 6 is RS-232 communication interface, RS-485 communication interface and GPRS/CDMA module interface (referring to accompanying drawing 1～2).
The pinout of communication interface 6 and be described as follows (referring to accompanying drawing 3):
(1), GPRS/CDMA DTU transmitting terminal, (2), GPRS/CDMA DTU receiving end, (3), GPRS/CDMA DTU ground, (4), the RXD end of RS-232 interface, (5), the TXD end of RS-232 interface, (6), the GND end of RS-232 interface, (7), the B of RS-485 interface, (8), the A of RS-485 interface, (9), probe power just, (10), probe power is negative, (11), the test voltage ground wire, (12), stand-by, (13), the input of test A voltage, (14), stand-by, (15), the input of test b voltage, (16), stand-by, (17), the input of test C voltage, (18), stand-by, (19), stand-by, (20), stand-by, (21), test A electric current positive input, (22), the negative input of test A electric current, (23), test b electric current positive input, (24), the negative input of test b electric current, (25), test C electric current positive input, (26), the negative input of test C electric current.
This industry electric energy sensor network node uses microprocessor and the interface circuit composition is integrated, has only connection terminal on the sensor housing 7.During work, behind the electric current and voltage signal processing of microprocessor 3 with three-phase current sensor 1 and 2 collections of three-phase voltage sensor, deliver to RS-232 communication interface, RS-485 communication interface and GPRS/CDMA module interface by interface circuit 5 respectively by microprocessor software, signal is sent out, this sensor can be formed the power test network at the scene again.
This working sensor principle is as follows: measuring method adopts genuine standard or two table methods, angle type or wye connection.Exchange input and comprise A, B, C three-phase voltage and electric current.Electric current is the circular hole that directly line is penetrated the small current mutual inductor; Voltage then adopts 4 terminals, is respectively UA, UB, UC and UN; System for isolated neutral, UA, UB, UC can be directly with the A of electrical network mutually, B phase, C be connected, UN can float sky or directly connect the earth or insert the earth by a high resistance measurement in needing the system of insulation monitoring, and system can calculate 3U0 very accurately like this.
The ac voltage signal of input is by small-sized PT (voltage transformer (VT)), be transformed to the signal that exchanges 0.5V, through Filtering Processing, filtering interference signals, carry out the level translation then, make original AC signal, the VREF (reference voltage) of stack 1/2, directly deliver to the A/D conversion of microprocessor, sample.
The current signal of input, penetrate little CT (current transformer) by lead, the output of CT connects a precision resistance, is transformed into voltage signal, through Filtering Processing, filtering interference signals carries out the level translation then, makes original AC signal, the VREF (reference voltage) of stack 1/2, directly deliver to the A/D conversion of microprocessor, sample, the signal that sampling is good deposits among the RAM of microprocessor for software processes.
In software, 16 points of each cycle sampling according to sampling thheorem, can calculate 8 subharmonic of input signal.But in application, odd harmonic more is concerned about.In digital signal processing, because the frequency of electrical network if sample frequency is not the integral multiple of mains frequency, has the spectrum leakage problem changing.
For 6 road input signals, carry out FFT (Fu Liye) conversion, draw the amplitude and the phase angle of each harmonic, and calculate zero-sequence current and negative-sequence current.Result calculated deposits among the RAM of microprocessor, uses for other programs such as signal procedure, defence program.The user can obtain these data by corresponding software.
This industry electric energy sensor network node possesses the high speed detection function of electric energy population parameter (voltage, electric current, meritorious, idle, power factor, electric energy, harmonic wave etc.), can be by built-in network node module, according to the adaptive routing protocol of optimizing, finish the MANET of sensor node, thereby construction cost is cheap, the energy monitor network system of superior performance.
Claims (2)
1. industrial electric energy sensor network node, it is made of sensor housing (7), three-phase current sensor (1), three-phase voltage sensor (2), microprocessor (3), power supply (4), interface circuit (5) and communication interface (6), it is characterized in that: three-phase current sensor (1), three-phase voltage sensor (2), microprocessor (3), power supply (4) and interface circuit (5) are housed in the sensor housing (7), and communication interface (6) is equipped with in the side of sensor housing (7); One side of microprocessor (3) connects three-phase current sensor (1) and three-phase voltage sensor (2), the opposite side connecting interface circuit (5) of microprocessor (3), and interface circuit (5) is connected with communication interface (6) by connecting line.
2. industrial electric energy sensor network node according to claim 1 is characterized in that: described communication interface (6) is RS-232 communication interface, RS-485 communication interface and GPRS/CDMA module interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202398932U CN201697959U (en) | 2010-06-13 | 2010-06-13 | Industrial electric energy network node sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202398932U CN201697959U (en) | 2010-06-13 | 2010-06-13 | Industrial electric energy network node sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201697959U true CN201697959U (en) | 2011-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202398932U Expired - Fee Related CN201697959U (en) | 2010-06-13 | 2010-06-13 | Industrial electric energy network node sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201697959U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183687A (en) * | 2011-02-18 | 2011-09-14 | 广西师范大学 | Three-phase power current sensor based on CAN (Controller Area Network) transmission of AC (Alternating Current) sampling |
-
2010
- 2010-06-13 CN CN2010202398932U patent/CN201697959U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183687A (en) * | 2011-02-18 | 2011-09-14 | 广西师范大学 | Three-phase power current sensor based on CAN (Controller Area Network) transmission of AC (Alternating Current) sampling |
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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: 20110105 Termination date: 20140613 |
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| EXPY | Termination of patent right or utility model |