CN202735406U - Single-phase electric parameter acquiring device - Google Patents
Single-phase electric parameter acquiring device Download PDFInfo
- Publication number
- CN202735406U CN202735406U CN 201220315823 CN201220315823U CN202735406U CN 202735406 U CN202735406 U CN 202735406U CN 201220315823 CN201220315823 CN 201220315823 CN 201220315823 U CN201220315823 U CN 201220315823U CN 202735406 U CN202735406 U CN 202735406U
- Authority
- CN
- China
- Prior art keywords
- signal
- phase electricity
- unit
- main control
- control unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model discloses a single-phase electric parameter acquiring module, and provides a single-phase electric parameter acquiring module which is small in size, high in precision, complete in function, simple in structure and low in cost. The single-phase electric parameter acquiring module comprises a signal acquiring unit, a signal conditioning circuit, an analog-digital conversion module, a main control unit, a storage unit, a communication unit and a reference source circuit unit. According to the single-phase electric parameter acquiring module, an A/D (analog-digital) conversion chip and a microprocessor are adopted, the microprocessor is enabled to directly calculate out various electric parameters according to acquired signals, and the calculated electric parameters are not only rich in type, but also have the harmonic wave analysis function. By utilizing the single-phase electric parameter acquiring module, complex data processing can be carried out, and not only can more electric parameter measurement be accomplished, but also the measurement is high in precision, the device is small in size and convenient to set up.
Description
Technical field
The utility model relates to a kind of data collector, specifically a kind of single-phase electricity parameter acquisition device.
Background technology
Along with the develop rapidly of electronic technology, the integrated level of electric energy meter is more and more higher, on single-phase multifunctional ammeter market, mainly is the design proposal that electric energy computation chip adds microcontroller; But this scheme precision is low, and function is few, and function depends primarily on electric energy chip, and microcontroller can not carry out complicated data to be processed, and the electrical quantity that can measure is also fewer, does not have the functions such as frequency analysis, uses dumb.
The utility model content
For above-mentioned deficiency, the utility model provides a kind of single-phase electricity parameter acquisition device, and it can directly calculate various electrical quantitys according to the signal that gathers, the electrical quantity abundant species that not only calculates, and possess the frequency analysis function.
In order to solve the technical matters of above-mentioned existence, the utility model adopts following technical proposals: a kind of single-phase electricity parameter acquisition device, it is characterized in that, comprise signal gathering unit, signal conditioning circuit, analog-to-digital conversion module, main control unit, storage unit, communication unit and reference source circuit unit, described signal gathering unit, signal conditioning circuit are connected with analog-to-digital conversion module and are connected, and described main control unit is connected with analog-to-digital conversion module, storage unit, communication unit and reference source circuit unit respectively; Wherein, signal gathering unit is in order to the signal that gathers single-phase electricity and send to signal conditioning circuit, described signal conditioning circuit is tentatively nursed one's health processing to the single-phase electricity signal that gathers, and the single-phase electricity signal that will tentatively nurse one's health after the processing sends to D/A converter module, described D/A converter module is digital signal with the analog signal conversion of the single-phase electricity that collects and the digital signal of single-phase electricity is sent to main control unit, described main control unit carries out analyzing and processing to the single-phase electricity signal that receives, calculate various electrical quantitys, and the single-phase electricity parameter after the analyzing and processing sent to host computer by communication unit, store data into storage unit simultaneously; Described reference source circuit unit is with thinking that main control unit provides the reference voltage signal of a signals collecting.
In the above-mentioned single-phase electricity parameter acquisition device, described signal gathering unit comprises the voltage transformer (VT) summation current transformer.
In the above-mentioned single-phase electricity parameter acquisition device, described main control unit comprises microcontroller and is attached thereto respectively SPI interface, RS485 interface and IIC interface.
In the above-mentioned single-phase electricity parameter acquisition device, described storage unit comprises eeprom memory.
A kind ofly utilize single-phase electricity parameter acquisition device described in the utility model to the single-phase electricity signal being carried out the method for analyzing and processing, comprise following process:
System initialization;
Sampled data is processed, calculated the single-phase electricity parameter;
Upload the single-phase electricity supplemental characteristic;
The data storage.
In the above-mentioned method of single-phase electricity being carried out analyzing and processing, also comprise the sampling interrupt procedure, described sampling interrupt procedure comprises following process: judge whether to arrive a sampling period, if so, then calculate the single-phase electricity parameter, then finish the sampling interrupt procedure; If not, then directly finish the sampling interrupt procedure.
In the above-mentioned method of single-phase electricity being carried out analyzing and processing, also comprise the communication disruption process, described communication disruption process comprises following process: interrupt instruction whether, if do not have, then finish the communication disruption process; If interrupt instruction is arranged, then carry out associative operation according to instruction, if the parameters instruction then arranges module parameter, if the reading out data instruction, then return the single-phase electricity parameter of collection.
In the above-mentioned method of single-phase electricity being carried out analyzing and processing, also comprise the Interruption process, described Interruption process comprises following process: whether carry out Interruption, if, then cumulative data is added up, and store up-to-date cumulative data into storage unit, stop timing interrupt procedure then; If not, direct stop timing interrupt procedure then.
In the above-mentioned method of single-phase electricity being carried out analyzing and processing, described data handling procedure comprises following process:
Gather voltage, the current instantaneous value of the single-phase electricity in a plurality of cycles;
Calculate the electrical quantitys such as average voltage, current average, voltage effective value, cycle, power factor (PF), active power, reactive power, applied power of single-phase electricity by the digital integration formula; Time Calculation by performance number and accumulation goes out the meritorious total electric energy of forward, reverse meritorious total electric energy, forward is idle total electric energy, oppositely idle total electric energy;
Voltage, current instantaneous value are done Fourier transform, time-domain signal is transformed into frequency-domain analysis single-phase voltage each harmonic and resultant distortion rate, single-phase current each harmonic and resultant distortion rate.
The beneficial effects of the utility model are, the utility model has adopted the A/D conversion chip to add microprocessor, and microprocessor can directly calculate various electrical quantitys according to the signal that gathers, the electrical quantity abundant species that not only calculates, and possess the frequency analysis function.The utility model can carry out complicated data to be processed, and not only finishes more electric parameter measurement, and measuring accuracy is high, and device volume little, arrange easy.
Description of drawings
Fig. 1 is theory diagram of the present utility model;
Fig. 2 is the electrical schematic diagram of microcontroller described in the utility model;
Fig. 3 is the electrical schematic diagram of this practical described reference source circuit unit;
Fig. 4 is the electrical schematic diagram of signal gathering unit described in the utility model, signal conditioning circuit and D/A converter module;
Fig. 5 is the electrical schematic diagram of storage unit described in the utility model;
Fig. 6 is first electrical schematic diagram of communication unit described in the utility model;
Fig. 7 utilizes the utility model to the method flow diagram to the single-phase electricity signal analysis and processing;
Fig. 8 is the process flow diagram of sampling interrupt procedure described in the utility model;
Fig. 9 is the process flow diagram of communication disruption process described in the utility model;
Figure 10 is the process flow diagram of Interruption process described in the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
As shown in Figure 1, a kind of single-phase electricity parameter acquisition device of the present utility model, it is characterized in that, comprise signal gathering unit, signal conditioning circuit, analog-to-digital conversion module, main control unit, storage unit, communication unit and reference source circuit unit, described main control unit comprises microcontroller and is attached thereto respectively SPI interface, RS485 interface and IIC interface; Described signal gathering unit, signal conditioning circuit are connected with analog-to-digital conversion module and are connected; Described microcontroller is connected with analog-to-digital conversion module, is connected with storage unit, is connected with communication unit by the RS485 interface by the IIC interface by the SPI interface respectively; Described reference source circuit unit is connected with microcontroller; Described storage unit comprises eeprom memory; Wherein, signal gathering unit is in order to the signal that gathers single-phase electricity and send to signal conditioning circuit, described signal conditioning circuit is tentatively nursed one's health processing to the single-phase electricity signal that gathers, and the single-phase electricity signal that will tentatively nurse one's health after the processing sends to D/A converter module, described D/A converter module is digital signal with the analog signal conversion of the single-phase electricity that collects and the digital signal of single-phase electricity is sent to main control unit, described main control unit carries out analyzing and processing to the single-phase electricity signal that receives, calculate various electrical quantitys, and the single-phase electricity parameter after the analyzing and processing sent to host computer by communication unit, store data into storage unit simultaneously; Described reference source circuit unit is with thinking that main control unit provides the reference voltage signal of a signals collecting.
Fig. 2 is the electrical schematic diagram of microcontroller described in the utility model.As shown in Figure 2,32 ARM chip STM32F103 that described microcontroller U3 adopts, fast operation, cost performance is high, and abundant Peripheral Interface commonly used is provided.Inside possesses 2 12 one by one pattern number converter relatively, and nearly 16 passages are arranged, and 1 μ S switching time, can use dma operation.
Fig. 3 is the electrical schematic diagram of this practical described reference source circuit unit.As shown in Figure 3, described reference source circuit unit mainly is comprised of a slice TL431 fiducial chip, TL431 is three end adjustable shunt reference sources with good thermal stability energy, and its output voltage just can be set to arbitrarily the 2.5V reference voltage with two resistance, is applied in the various power circuits.
Fig. 4 is the electrical schematic diagram of signal gathering unit described in the utility model, signal conditioning circuit and D/A converter module.As shown in Figure 4, described signal gathering unit comprises the voltage transformer (VT) summation current transformer; Voltage transformer (VT) T8 becomes the small voltage signal by R29 with the voltage signal conditioning that gathers, and by the sampling of R30 sampling resistor, the clamping circuit clamper that forms through R32, R33 sends to master controller.Current transformer T7 becomes little current signal with the current signal conditioning that gathers, and by the sampling of R31 sampling resistor, the clamping circuit clamper that forms through R34, R35 sends to master controller.
Fig. 5 is the electrical schematic diagram of storage unit described in the utility model.As shown in Figure 5, described data storage cell mainly is comprised of a slice EEPROM, and the protected data of system's operation is preserved in real time, finishes the accumulation function of some accumulation parameters.
Fig. 6 is first electrical schematic diagram of communication unit described in the utility model.As shown in Figure 6, described communication unit mainly is comprised of a slice SP485 chip, and R22, R23, D4, D5 form 485 interface anti-surge protection circuits jointly, improves the reliability of circuit.
Fig. 7 utilizes the utility model to the method flow diagram to the single-phase electricity signal analysis and processing.As shown in Figure 7, a kind of the three-phase electricity signal is carried out the method for analyzing and processing, may further comprise the steps:
The work beginning.
System initialization: microcontroller initialization peripheral circuit, read the protected data among the EEPROM, recover power failure data, initialization cumulative data etc.
Data are processed: sampled data is processed, and calculated three phase electrical parameters.
Uploading data: regularly or according to the instruction of host computer, upload the three phase electrical parameters data.
The data storage: the Data Update that regularly will need to accumulate is in outside power failure data storage unit.
Sampling is interrupted: the interrupt event of sampling is processed.
Communication disruption: carry out the break-make interrupt event and process.
Interruption: the interrupt event of sampling is processed.
Return the output treatment step, carry out cycling.
Fig. 8 is the process flow diagram of sampling interrupt procedure described in the utility model.As shown in Figure 8, described sampling interrupt procedure comprises following process: judge whether to arrive a sampling period, if so, then calculate three phase electrical parameters, then finish the sampling interrupt procedure; If not, then directly finish the sampling interrupt procedure.
Fig. 9 is the process flow diagram of communication disruption process described in the utility model.As shown in Figure 9, described communication disruption process comprises following process: interrupt instruction whether, if do not have, then finish the communication disruption process; If interrupt instruction is arranged, then carry out associative operation according to instruction, if the parameters instruction then arranges module parameter, if the reading out data instruction, then return the three phase electrical parameters of collection.
Figure 10 is the process flow diagram of Interruption process described in the utility model.As shown in figure 10, described Interruption process comprises following process: whether carry out Interruption, if so, then cumulative data is added up, and store up-to-date cumulative data into storage unit, then the stop timing interrupt procedure; If not, direct stop timing interrupt procedure then.
Data handling procedure described in the utility model comprises following process:
Gather voltage, the current instantaneous value of the single-phase electricity in a plurality of cycles;
Calculate the electrical quantitys such as average voltage, current average, voltage effective value, cycle, power factor (PF), active power, reactive power, applied power of single-phase electricity by the digital integration formula; Time Calculation by performance number and accumulation goes out the meritorious total electric energy of forward, reverse meritorious total electric energy, forward is idle total electric energy, oppositely idle total electric energy;
Voltage, current instantaneous value are done Fourier transform, time-domain signal is transformed into frequency-domain analysis single-phase voltage each harmonic and resultant distortion rate, single-phase current each harmonic and resultant distortion rate.
The parameter designing that the utility model measure to calculate instantaneous voltage, current instantaneous value, average voltage, current average, voltage effective value, cycle, power factor (PF), active power, reactive power, applied power, forward active energy, oppositely active energy, forward reactive energy, reverse reactive energy, voltage each harmonic and aberration rate, electric current each harmonic and aberration rate etc.Three-phase phase voltage, line voltage, three-phase phase voltage mean value, three-phase line voltage mean value, three-phase imbalance voltage, the imbalance of three-phase voltage degree, three-phase electricity flow valuve, three-phase imbalance electric current, three current unbalance factors, cycle, power factor (PF), three phases active power, three phase reactive power, three-phase applied power, forward total electric energy of gaining merit, reverse meritorious total electric energy, forward is idle total electric energy, reverse idle total electric energy, three-phase voltage each harmonic and resultant distortion rate, three-phase current each harmonic and resultant distortion rate etc.Therefore, it is abundant that the utility model is measured calculating parameter, can reach high-acruracy survey and calculate, and not only arranges easyly, with low cost, and satisfied various application occasions.
Claims (4)
1. single-phase electricity parameter acquisition device, it is characterized in that, comprise signal gathering unit, signal conditioning circuit, analog-to-digital conversion module, main control unit, storage unit, communication unit and reference source circuit unit, described signal gathering unit, signal conditioning circuit are connected with analog-to-digital conversion module and are connected, and described main control unit is connected with analog-to-digital conversion module, storage unit, communication unit and reference source circuit unit respectively; Wherein, signal gathering unit is in order to the signal that gathers single-phase electricity and send to signal conditioning circuit, described signal conditioning circuit is tentatively nursed one's health processing to the single-phase electricity signal that gathers, and the single-phase electricity signal that will tentatively nurse one's health after the processing sends to D/A converter module, described D/A converter module is digital signal with the analog signal conversion of the single-phase electricity that collects and the digital signal of single-phase electricity is sent to main control unit, described main control unit carries out analyzing and processing to the single-phase electricity signal that receives, calculate various electrical quantitys, and the single-phase electricity parameter after the analyzing and processing sent to host computer by communication unit, store data into storage unit simultaneously; Described reference source circuit unit is with thinking that main control unit provides the reference voltage signal of a signals collecting.
2. a kind of single-phase electricity parameter acquisition device according to claim 1 is characterized in that described signal gathering unit comprises the voltage transformer (VT) summation current transformer.
3. a kind of single-phase electricity parameter acquisition device according to claim 1 is characterized in that, described main control unit comprises microcontroller and is attached thereto respectively SPI interface, RS485 interface and IIC interface.
4. a kind of single-phase electricity parameter acquisition device according to claim 1 is characterized in that described storage unit comprises eeprom memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220315823 CN202735406U (en) | 2012-06-30 | 2012-06-30 | Single-phase electric parameter acquiring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220315823 CN202735406U (en) | 2012-06-30 | 2012-06-30 | Single-phase electric parameter acquiring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202735406U true CN202735406U (en) | 2013-02-13 |
Family
ID=47661091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220315823 Expired - Lifetime CN202735406U (en) | 2012-06-30 | 2012-06-30 | Single-phase electric parameter acquiring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202735406U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735921A (en) * | 2012-06-30 | 2012-10-17 | 李钢 | Single-phase electric parameter acquisition device and method for analyzing and processing single-phase electric signal |
| CN104569700A (en) * | 2015-02-03 | 2015-04-29 | 上海观源信息科技有限公司 | Equipment power consumption acquiring device with various interfaces |
| CN105448073A (en) * | 2015-12-25 | 2016-03-30 | 福建顺昌虹润精密仪器有限公司 | Single-phase digital electrical quantity transducer |
-
2012
- 2012-06-30 CN CN 201220315823 patent/CN202735406U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735921A (en) * | 2012-06-30 | 2012-10-17 | 李钢 | Single-phase electric parameter acquisition device and method for analyzing and processing single-phase electric signal |
| CN104569700A (en) * | 2015-02-03 | 2015-04-29 | 上海观源信息科技有限公司 | Equipment power consumption acquiring device with various interfaces |
| CN105448073A (en) * | 2015-12-25 | 2016-03-30 | 福建顺昌虹润精密仪器有限公司 | Single-phase digital electrical quantity transducer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103207363B (en) | A kind of instrument measuring solar cell parameter | |
| CN102735921A (en) | Single-phase electric parameter acquisition device and method for analyzing and processing single-phase electric signal | |
| CN202975110U (en) | Electrical parameter measurement module | |
| CN201637773U (en) | Collecting circuit of true effective value of multi-path alternating current signals | |
| CN202093092U (en) | All-round power metering chip | |
| CN107105056A (en) | A kind of cloud control electric meter system based on WiFi communication | |
| CN202735406U (en) | Single-phase electric parameter acquiring device | |
| CN201845051U (en) | Three-phase intelligent electric energy meter | |
| CN102721887A (en) | Three-phase electrical parameter gathering device and method for analyzing and processing three-phase electrical signals | |
| CN101464503A (en) | Electric energy quality monitoring terminal | |
| CN202735429U (en) | Three-phase electrical parameter gathering device | |
| CN103852623B (en) | Condenser type photovoltaic cell voltage x current harvester | |
| CN203561692U (en) | Electric energy meter possessing automatic measuring range switching and capable of metering fundamental wave and harmonic wave respectively | |
| CN202494744U (en) | Device for detecting quality of electric energy | |
| CN205809203U (en) | A kind of converter special test system | |
| CN205643688U (en) | Single -phase electric energy meter detection device | |
| CN203759092U (en) | Capacitive photovoltaic battery voltage/current acquisition apparatus | |
| CN204129207U (en) | Electric energy measuring equipment on-site calibrator | |
| CN206311661U (en) | The detection circuit of real-time three-phase current average value | |
| CN206162654U (en) | Photovoltaic power plant subassembly environment power prediction system | |
| CN104267254B (en) | A kind of sinusoidal current reactive power detection method | |
| CN202916335U (en) | Three-phase current meter based on single-phase metering chip | |
| CN204359811U (en) | The novel rotating speed measurement mechanism of Synchronous generator | |
| CN203965517U (en) | A kind of single-phase intelligent type electric energy meter | |
| CN203688663U (en) | Power collection system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: SHANDONG GOLDREAL ENERGY CONSERVATION TECHNOLOGY Co.,Ltd. Assignor: Li Gang Contract record no.: 2013370000062 Denomination of utility model: Single-phase electric parameter acquisition device and method for analyzing and processing single-phase electric signal Granted publication date: 20130213 License type: Exclusive License Record date: 20130328 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130213 |
|
| CX01 | Expiry of patent term |