CN208635836U - A kind of CAN bus based power information acquisition system - Google Patents

A kind of CAN bus based power information acquisition system Download PDF

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Publication number
CN208635836U
CN208635836U CN201721490150.0U CN201721490150U CN208635836U CN 208635836 U CN208635836 U CN 208635836U CN 201721490150 U CN201721490150 U CN 201721490150U CN 208635836 U CN208635836 U CN 208635836U
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China
Prior art keywords
module
information acquisition
power information
control module
electric energy
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Expired - Fee Related
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CN201721490150.0U
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Chinese (zh)
Inventor
王超
凌辉
陶成
唐友怀
邢鸣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIANGSU ZHENJIANG INSTALLATION GROUP Co Ltd
Xin Run Power Tech Corp Inc Of Jiangsu Zhenan County
Jiangsu Zhenan Power Equipment Co Ltd
Original Assignee
JIANGSU ZHENJIANG INSTALLATION GROUP Co Ltd
Xin Run Power Tech Corp Inc Of Jiangsu Zhenan County
Jiangsu Zhenan Power Equipment Co Ltd
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Application filed by JIANGSU ZHENJIANG INSTALLATION GROUP Co Ltd, Xin Run Power Tech Corp Inc Of Jiangsu Zhenan County, Jiangsu Zhenan Power Equipment Co Ltd filed Critical JIANGSU ZHENJIANG INSTALLATION GROUP Co Ltd
Priority to CN201721490150.0U priority Critical patent/CN208635836U/en
Application granted granted Critical
Publication of CN208635836U publication Critical patent/CN208635836U/en
Expired - Fee Related legal-status Critical Current
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Abstract

The utility model discloses a kind of CAN bus based power information acquisition and wireless system for transmitting data, microcontroller chip is acquired the data such as resulting voltage, electric current, load, electricity, temperature, warning message using the controller area network of high speed and is summarized, handles by the utility model, and host computer is sent to certain data format eventually by GPRS module, it analyzed, handled for host computer, finally real time data collection is monitored and is timely feedbacked to shift electrician.The utility model will become each parameters of electric power of power distribution room and be aggregated into cloud, can connection internet equipment end real time inspection monitoring data, greatly reduce operation and maintenance manpower and economic cost and can according to data analysis reasonably optimizing power supply and distribution service condition;Warning message real-time transmission, can quickly and effectively locating alarming type, facilitate maintenance personal quickly to make respective handling, greatly improve working efficiency.

Description

A kind of CAN bus based power information acquisition system
Technical field
The utility model relates to the acquisition of the power information of power utilization environment, summarize, uses technical grade double frequency GSM/GPRS module Power information and warning message are uploaded to master system.
Background technique
Nowadays become the electrical power services fields such as operation and maintenance, the electric power first-aid of power distribution room and rely on electrician's periodical inspection mostly, examine The mode looked into.The working method is in the form of a single and working efficiency is relatively low, cannot discover in time to existing security risk.Such as electrician Carelessness, which may cause, during tour endangers personal safety and serious property loss situation.The real-time acquisition of power supply and distribution information And the timely of warning message is uploaded the effective working efficiency for improving electrician, reduces manpower and economic cost, it can be effective right Security risk judges, and reduces the harm of electricity consumption hidden danger bring.
Controller area network (CAN) have strong real-time, transmission range farther out, anti-electromagnetic interference capability it is strong, at low cost etc. Advantage has been widely used in industrial automation, various control especially suitable for the data communication between distributed measurement and control system The various fields such as equipment, the vehicles, Medical Instruments and building, environmental Kuznets Curves.CAN communication has priority and arbitration function Can, multiple control modules are suspended on CAN-Bus by CAN controller, form more host localized networks.
General packet radio service technology (GPRS) is the data transmission technology in Generation Mobile Telecommunication System.GPRS has height The transmission of fast data, it is always online and only by data traffic charge the advantages of.The realization of GPRS technology so that power information data It is uploaded to that internet is more convenient, while also reducing the cost of data networking.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the utility model provides a kind of based on CAN bus Power information acquisition and wireless system for transmitting data, the utility model is using the controller area network of high speed by microcontroller core Piece acquires the data such as resulting voltage, electric current, load, electricity, temperature, warning message and is summarized, handled, and eventually by GPRS module is sent to host computer with certain data format, is analyzed, is handled for host computer, finally by real time data collection It monitors and timely feedbacks to shift electrician.
Technical solution:
A kind of CAN bus based power information acquisition system, including single node control module, centralized control module and be The 24V Switching Power Supply of single node control module and centralized control module power supply;The single node control module includes electrical energy measurement Module, temperature collecting module, communication module and microcontroller;The centralized control module includes microcontroller;
In the single node control module, electric energy metering module, temperature collecting module and 485 communication modules with micro- place Manage device connection;The electric energy metering module collection voltages, current data are simultaneously analyzed and processed, and result is sent to micro process Device;The temperature collecting module acquires the temperature in CAN bus and is sent to microprocessor;
It is connected with each other between each single node control module;Each single node control module passes through CAN bus and the collection The microprocessor of middle control module connects;The microcontroller of the centralized control module is transmitted wirelessly and is moved by GPRS/CDMA Dynamic base station is connected;Mobile base station is connect by internet with server;Server is connected with monitoring center and mobile terminal.
In consolidated network between each single node control module and the centralized control module CAN bus by Shielded Twisted Pair into Row connection.
The Master control chip of microcontroller uses STM32F103 series monolithic.
For electric energy metering module using distributed power information acquisition device, distributed power information acquisition device includes multiphase Multifunctional electric energy measures IC, voltage sensor and current sensor.
The multiphase multifunctional electric energy metering IC has high-precision adc, to voltage, the electricity of voltage, current sensor access Stream signal is sampled, is analyzed, is handled;It is by internal processor that the voltage of calculating is effective that multiphase multifunctional electric energy measures IC Value, current effective value, active power, reactive power, frequency, active energy, reactive energy parameter are put into internal corresponding registers, It is read out by external microcontroller.
The communication module is 485 communication interfaces.
The distribution power information acquisition device is connect with communication module;Alarm threshold value by communication module save to EEPROM is compared by measured value and alarm threshold value, is exported corresponding warning mark according to different alert and if is reported It is alert.
The utility model has the advantages that will become each parameters of electric power of power distribution room is aggregated into cloud, can be looked into real time in the equipment end of connection internet See monitoring data, greatly reduce operation and maintenance manpower and economic cost and can according to data analyze reasonably optimizing power supply and distribution make Use situation;Warning message real-time transmission, can quickly and effectively locating alarming type, facilitate maintenance personal quickly to make corresponding position Reason, greatly improves working efficiency.
Detailed description of the invention
Fig. 1 Tthe utility model system principle assumption diagram;
Fig. 2 (a)~Fig. 2 (g) is the microcontroller minimum system schematic diagram that the utility model control module uses;
Wherein, Fig. 2 (a): STM32f103zet6 chip, RTC crystal oscillator and external cell circuit diagram;Fig. 2 (b) is STM32f103zet6 minimum system reset circuit figure;Fig. 2 (c) is STM32f103zet6 minimum system power indicator circuit Figure;Fig. 2 (d) is STM32f103zet6 minimum system decoupling capacitor circuit diagram;Fig. 2 (e) is STM32f103zet6 minimum system External master clock circuit diagram;Fig. 2 (f) is FeRAM circuit figure;Fig. 2 (g) is pull-up resistor circuit diagram;
Electrical energy measurement IC circuit diagram used in Fig. 3 the utility model;
A kind of electric current, voltage used in Fig. 4 the utility model use circuit diagram;
A kind of temperature collection circuit schematic diagram used in Fig. 5 the utility model;
GPRS module communicating circuit schematic diagram used in Fig. 6 the utility model;
485 communications and CAN communication circuit schematic diagram used in Fig. 7 the utility model;
Module for power supply circuit diagram used in Fig. 8 the utility model;
GPRS module power supply circuit schematic diagram used in Fig. 9 the utility model.
Wherein, 1 is microcontroller, and 2 be 24V Switching Power Supply, and 3 be electric energy metering module, and 4 be temperature collecting module, and 5 are 485 communication modules, 6 be CAN bus, and 7 be GPRS/CDMA module, and 8 be base station, and 9 be internet, and 10 be database server, 11 be monitoring center, and 12 be mobile phone.
Specific embodiment
The utility model is further described with reference to the accompanying drawing.
Of the utility model is a kind of CAN bus based power information acquisition and wireless system for transmitting data, such as Shown in Fig. 1, including single node control module and centralized control module and power for single node control module and centralized control module 24V Switching Power Supply;Wherein, single node control module include microcontroller, it is electric energy metering module, temperature collecting module, 485 logical Interrogate module;Centralized control module includes microcontroller;In single node control module, electric energy metering module, temperature collecting module, 485 communication modules are connect with microprocessor, are connected with each other between each single node control module;Each single node control module It is connected by the microprocessor of CAN bus and centralized control module;The microcontroller of centralized control module by GPRS/CDMA without Line transmission is connected with mobile base station;CAN bus passes through screen between each single node control module and centralized control module in consolidated network Twisted pair is covered to be attached;Monitoring center, mobile terminal, that is, mobile phone are respectively connected to server;Server and mobile base station Between pass through internet connect.
For electric energy metering module using distributed power information acquisition device, distributed power information acquisition device includes multiphase Multifunctional electric energy measures IC, voltage sensor and current sensor;Power and distribution supply cable passes through voltage, current sensor access point Cloth power information acquisition device is sent after the processing such as voltage, current sensor acquire resulting voltage, current data is filtered Enter multiphase multifunctional electric energy metering IC, multiphase multifunctional electric energy is measured IC and has high-precision adc, passed through with given pace to electricity Voltage, the current signal that pressure, current sensor access are sampled, are analyzed, are handled, and multiphase multifunctional electric energy measures IC in Portion's processor is by the voltage effective value of calculating, current effective value, active power, reactive power, frequency, active energy, idle electricity The parameters such as energy are put into internal corresponding registers, are read by the external microcontroller connecting with distributed power information acquisition device It takes;Temperature collecting module is temperature sensor, and microcontroller reads monobus digital temperature on multiphase power cable simultaneously and senses Temperature data on device;Distributed power information acquisition device is connect with 485 communication interfaces, and alarm threshold value is connect by 485 communications Mouth is saved to the EEPROM inside distributed power information acquisition device, is compared by measured value and alarm threshold value, according to not Same alert if exports corresponding warning mark by 485 communications and alarms;485 communication interfaces can also be with more function Energy electric instrument communication, reads each parameter values on multifunctional electric meter.
The utility model uses the framework of one master and multiple slaves, and main website periodically reads carry all slave station data in CAN bus, And each slave station data are packaged, are handled, each slave station data are finally passed through into the wireless mould of GPRS with the data frame format arranged Block is sent to cloud host computer, for host computer processing, analysis.
Shown in minimum system circuit such as Fig. 2 (a)~Fig. 2 (g) of microcontroller, the utility model uses STM32F103 system Master control chip of the column single-chip microcontroller as microcontroller, the family chip are ST Microelectronics's production based on ARM 32 Cortex-M3 kernel CPU, maximum operating frequency is up to 72MHz.The chip is powered using 2.0~3.6V, possesses 3 12 ADC;The up to 112 quick ports I/O;Up to 11 timers;Up to 13 communication interfaces connect including 2 I2C Mouth, 5 USART interfaces, 3 SPI interfaces, CAN interfaces etc..Data saving part point uses 16K bit non-volatile ferroelectric memory FM24CL16B, the memory can as RAM fast reading and writing, read/writable number is almost limitless, and can save after power down 45 years.Opposite EEPROM or other nonvolatile memories, FM24CL16 have structure simpler, and system reliability is more high all More advantages.FM24CL16 uses quick two-wire serial interface, and bus frequency can directly replace EEPROM on hardware up to 1MHZ.
The chip system circuit of electric energy metering module is as shown in figure 3, the utility model is had using Ya De promise semiconductor technology The high-precision of limit company production, three-phase electric energy metering IC ADE7880.Multiple second order sigma-delta type analog-to-digital converter built in the device (ADC), digital integrator, reference voltage source circuit and all required signal processing circuits, realize that total (fundamental wave and harmonic wave) has Function/apparent power measurement and virtual value calculating and fundamental active/reactive power, active energy/reactive energy measurement.In addition, ADE7880 can calculate harmonic wave root mean square on phase and neutral line current and phase voltage, active/idle/apparent energy, with And power factor and harmonic distortion on each harmonic wave of all phases.Simultaneously total harmonic distortion can be calculated for all electric currents and voltage (THD).ADE7880 be suitble to measure various three lines, four lines three phase arrangement is active and reactive and apparent energy, such as Y shape or triangle Shape etc..Respectively mutually all have system calibration function, i.e. root mean square offset correction, phase alignment and gain calibration.CF1, CF2 and CF3 Logic output can provide many power informations: total active/apparent energy, current effective value and value or fundamental active/idle function Rate.
Voltage, current sampling circuit are as shown in figure 4, current sample uses the current transformer TA1015-2 of soldier's word, electric current Signal is accessed by foreign current sensor, is connected across A phase electricity after equal high precision sampling resistance R63, the R69 series connection of two resistance values Current transformer secondary side winding both ends, R65, C82, C83, R68 be connected in series after be also connected across A phase current mutual inductor secondary side around Group both ends;B, C, N phase is similarly.Voltage sample using soldier's word voltage transformer TV1013-1H, two precision resister R84, R85 connects with A phase voltage mutual inductor primary side carries out current limliting, and high precision sampling resistance R88 is connected across the two of A phase voltage mutual inductor Secondary side winding both ends are connected across A phase voltage mutual inductor secondary side winding both ends after same R89, C90 series connection;B, C phase is similarly.
The circuit of temperature collecting module is as shown in figure 5, the temperature sensor that the utility model uses is dallas semiconductor DS18B20, each DS18B20 has unique 64 bit sequence number, can connect on a monobus multiple DS18B20 equipment.The utility model provides 2 temperature acquisition channels, can connect multiple DS18B20 equipment, interchannel passes through bilateral Road I2C isolating chip ADUM1250 is isolated, and ADUM1250 has extremely strong Immunity Performance, not the shadow vulnerable to external magnetic field It rings.
GPRS communicating circuit is as shown in fig. 6, the SIM900A that the GPRS module that the utility model uses produces for SIMCom Module, SIM900A are the GSM/GPRS module of 2 frequencies, and working frequency range is EGSM 900MHz and DCS1800MHz, in SIM900A Embedding ICP/IP protocol, normal working temperature are -30 DEG C~+80 DEG C.
Communicating circuit is as shown in fig. 7,485 communications are real by causing the isolation RS-485 transceiver RSM3485ECHT of remote electronics Existing, inside modules integrated power supply isolation, RS-485 transceiver and bus protection device, design simple, reliable and stable; CAN communication is by causing the CAN isolated transceiver CTM1051 of remote electronics to realize that the module is mainly by CAN controller logic level The differential level of CAN bus is converted to, is in addition also had to the buffer action between CAN controller and CAN bus.
Single node control module power supply circuit is as shown in figure 8, wherein 5V voltage needed for module most devices passes through gold The modular power source URB2405YMD-10WR3 of rising Yang company is provided, and 3.3V voltage needed for each control chip, which passes through 3.3V, to be converted Chip SPX1117-3.3 conversion gained;GPRS module power supply circuit as shown in figure 9, the module using 4.0V power, use It is high-precision voltage regulator MIC29302BU.
Systematic realizing program: power supply line's information accesses single node control module, control by voltage, current sensor device Electrical energy measurement IC in module handles voltage, the current signal of input, is analyzed, is calculated, and in calculated result is placed in It is read in the corresponding register in portion for control module microcontroller, microcontroller is further located the electricity consumption data of reading Reason, while according to carry, the read-write sequence of temperature sensor in temperature acquisition bus reads each temperature sensor to microcontroller Temperature value;Controller microcontroller by each data acquired in real time with deposit ferroelectric memory numerical value be compared, analyze it is defeated Corresponding warning message out;Main control module constantly reads all carries in CAN bus in single node control module simultaneously Real time data, warning message, and all data are handled, are packaged, main control module will by GPRS module in module The data frame format mobile base station that information is arranged with host computer is forwarded to cloud and parses for host computer;The number that host computer will receive Data are showed according to after parsing, and each middle information is presented to by mobile terminal by customization APP, in time by warning message master It is dynamic to push to administrator's cell phone.
The above is only the preferred embodiment of the utility model, it should be pointed out that: for the common skill of the art For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and Retouching also should be regarded as the protection scope of the utility model.

Claims (6)

1. a kind of CAN bus based power information acquisition system, it is characterised in that: including single node control module, concentrate control Molding block and the 24V Switching Power Supply powered for single node control module and centralized control module;
The single node control module includes electric energy metering module, temperature collecting module, communication module and microcontroller;The collection Middle control module includes microcontroller;
In the single node control module, electric energy metering module, temperature collecting module and communication module connect with microprocessor It connects;The electric energy metering module collection voltages, current data are simultaneously analyzed and processed, and result is sent to microprocessor;Institute It states the temperature in temperature collecting module acquisition CAN bus and is sent to microprocessor;
It is connected with each other between each single node control module;Each single node control module is controlled by CAN bus and the concentration The microprocessor of molding block connects;The microcontroller of the centralized control module is connected by wireless telecommunications with mobile base station;It moves Dynamic base station is connect by internet with server;Server is connected with monitoring center and mobile terminal.
2. power information acquisition system according to claim 1, it is characterised in that: each single node controls mould in consolidated network CAN bus is attached by Shielded Twisted Pair between block and the centralized control module.
3. power information acquisition system according to claim 1, it is characterised in that: the Master control chip of microcontroller uses STM32F103 series monolithic.
4. power information acquisition system according to claim 1, it is characterised in that: electric energy metering module is used using distributed Power information acquisition device, distributed power information acquisition device include multiphase multifunctional electric energy metering IC, voltage sensor and Current sensor;
The multiphase multifunctional electric energy metering IC has high-precision adc, believes voltage, the electric current of voltage, current sensor access It number sampled, analyzed, being handled;Multiphase multifunctional electric energy measures IC and passes through internal processor for the voltage effective value of calculating, electricity Stream virtual value, active power, reactive power, frequency, active energy, reactive energy parameter are put into internal corresponding registers, by with The microcontroller of distributed power information acquisition device connection is read out.
5. power information acquisition system according to claim 1, it is characterised in that: the communication module is that 485 communications connect Mouthful.
6. power information acquisition system according to claim 1, it is characterised in that: distributed power information acquisition device with Communication module connection, alarm threshold value are saved to EEPROM by communication module, are compared by measured value and alarm threshold value, according to Different alert if exports corresponding warning mark by communication module and alarms.
CN201721490150.0U 2017-11-10 2017-11-10 A kind of CAN bus based power information acquisition system Expired - Fee Related CN208635836U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107677321A (en) * 2017-11-10 2018-02-09 江苏镇安欣润电力科技有限公司 A kind of power information acquisition system based on CAN
CN110242427A (en) * 2019-04-17 2019-09-17 吉林大学 A kind of engine of boat and ship monitoring system
CN110794203A (en) * 2019-11-08 2020-02-14 国网电子商务有限公司 Method and equipment for measuring power consumption information of single production equipment in factory

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107677321A (en) * 2017-11-10 2018-02-09 江苏镇安欣润电力科技有限公司 A kind of power information acquisition system based on CAN
CN110242427A (en) * 2019-04-17 2019-09-17 吉林大学 A kind of engine of boat and ship monitoring system
CN110794203A (en) * 2019-11-08 2020-02-14 国网电子商务有限公司 Method and equipment for measuring power consumption information of single production equipment in factory

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Granted publication date: 20190322

Termination date: 20191110