CN108072778A - A kind of intelligent electric energy meter burglar-proof electric circuit based on MEMS acceleration transducers - Google Patents
A kind of intelligent electric energy meter burglar-proof electric circuit based on MEMS acceleration transducers Download PDFInfo
- Publication number
- CN108072778A CN108072778A CN201711368779.2A CN201711368779A CN108072778A CN 108072778 A CN108072778 A CN 108072778A CN 201711368779 A CN201711368779 A CN 201711368779A CN 108072778 A CN108072778 A CN 108072778A
- Authority
- CN
- China
- Prior art keywords
- mems acceleration
- electric energy
- energy meter
- ports
- intelligent electric
- 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.)
- Pending
Links
- 230000001133 acceleration Effects 0.000 title claims abstract description 113
- 230000015654 memory Effects 0.000 claims abstract description 25
- 101150075681 SCL1 gene Proteins 0.000 claims description 7
- 101150111792 sda1 gene Proteins 0.000 claims description 7
- 239000013078 crystal Substances 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 9
- 238000012544 monitoring process Methods 0.000 abstract description 8
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 description 15
- 230000006870 function Effects 0.000 description 15
- 238000012545 processing Methods 0.000 description 12
- 238000004891 communication Methods 0.000 description 11
- 238000001514 detection method Methods 0.000 description 11
- 238000006073 displacement reaction Methods 0.000 description 10
- 238000005259 measurement Methods 0.000 description 10
- 230000008859 change Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000011835 investigation Methods 0.000 description 3
- 230000006855 networking Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 102100038591 Endothelial cell-selective adhesion molecule Human genes 0.000 description 1
- 101000882622 Homo sapiens Endothelial cell-selective adhesion molecule Proteins 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000013142 basic testing Methods 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/24—Arrangements for avoiding or indicating fraudulent use
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/061—Details of electronic electricity meters
- G01R22/066—Arrangements for avoiding or indicating fraudulent use
Abstract
The present invention is a kind of intelligent electric energy meter burglar-proof electric circuit based on MEMS acceleration transducers, its main feature is that：Including：Single chip circuit is electrically connected respectively with MEMS acceleration sensor circuits, memory module circuit, temperature measuring circuit.Whether can realize that intelligent electric energy meter power supply can accomplish the monitoring of suspicious actions or not, it is anti-electricity-theft to be active anti-electricity-theft to become passive type.Have many advantages, such as small, light-weight, at low cost, low in energy consumption, reliability is high, suitable for mass production, be easily integrated and realize intelligence.
Description
Technical field
The invention belongs to intelligent grid fields, are a kind of anti-electricity-theft electricity of the intelligent electric energy meter based on MEMS acceleration transducers
Road.
Background technology
With the fast development of Chinese economy, the power consumption of enterprise and resident rise year by year, intelligent electricity has been greatly facilitated
The all-round construction of net so that intelligent electric energy meter market development is swift and violent, and since 2009, national grid and south electric network were with unified
The mode of bid promotes intelligent electric energy meter, realizes all standing of intelligent electric energy meter substantially now.Current domestic intelligence electricity
The total quantity of energy table is more than 500,000,000.Intelligent electric energy meter is powerful, and accuracy class is high, has the function of bidirectional measuring, supports green
The color energy is grid-connected, has local infrared communication interface, it may be convenient to communicate with infrared palm machine, possess electric line carrier communication mould
Block or GPRS wireless communication modules can complete the networking communication of automatic meter reading system, possess both-way communication ability, and collection now
Middle kilowatt meter reading-out system has been realized in acquisition, all standing entirely, and all networkings of all intelligent electric energy meters communicate, in intelligent electric energy meter
Portion has the Security Encryption module ESAM of the close SM1 algorithms of state, it is ensured that communication data is carefree, and the high property that intelligent electric energy meter uses
The computation chip of energy has the function of neutral line current measurement, can detect tens kinds of stealing modes so that conventional electricity filching means base
This is all contained that the stealing problem of puzzlement power supply enterprise for a long time is greatly alleviated.But for the stealing of intelligent electric energy meter
Means also corresponding higher level, more hidden：Have after destroying seal, open intelligent electric energy meter cover, the directly meter in electric energy meter
It measures and sample circuit component is replaced in sample circuit, walk electric energy meter slow, then using the personation seal lead sealing again of Gao Fang
Electric energy meter, inspector are difficult identification；What is more, after intelligent electric energy meter is illegally moved, by the back side, that is, bottom case of electric energy meter
Destroy, then change circuit connection and related component parameter, after intelligent electric energy meter original position extension is gone back, front checks basic
It can not note abnormalities；Or by intelligent electric energy meter illegally move after, its installation wall in dig a hole after be implanted into strong magnet, after will
Intelligent electric energy meter, which sets back, to be put, and so can not act the on-load switch for causing intelligent electric energy meter.These are new, violence
Electricity filching means have seriously damaged the interests of electric power enterprise, have upset normal confession electricity consumption order, becoming influences electric utility hair
The big constraint of the one of exhibition, and serious threat Electrical Safety.Therefore, power supply enterprise must targetedly enrich hand of opposing electricity-stealing
Section, the cruising frequency of increase inspection troop, while increase the number of inspection troop, thus considerably increase the pipe of power supply department
Cost is managed, and cannot find stealing accident in first time, it can only be monthly according to line loss exception information, by-line road, by user
Investigation, it is extremely inefficient, be that a kind of passive type is anti-electricity-theft.
The content of the invention
The technical problem to be solved by the invention is to provide a kind of small, light-weight, at low cost, low in energy consumption, reliabilities
It is high, suitable for mass production, be easily integrated and realize that the intelligentized intelligent electric energy meter based on MEMS acceleration transducers is thief-proof
Circuit.Intelligent electric energy meter burglar-proof electric circuit based on MEMS acceleration transducers, MEMS acceleration transducers is creative
It is applied on intelligent electric energy meter, change passive type is anti-electricity-theft to be active anti-electricity-theft, is so formally installed to use in intelligent electric energy meter
After family scene is come into operation, by installing infrared palm machine of the electrician by power supply management department, enabled using cipher mode transmission
MEMS acceleration transducers instruct, and after intelligent electric energy meter receives instruction, open the measurement function of MEMS acceleration transducers, once
Game clock lid, inclination, vibrations occur for intelligent electric energy meter；Or when being attacked by electric drill impact external force, built in intelligent electric energy meter
The MEMS numbers 3-axis acceleration sensor of the intelligent electric energy meter burglar-proof electric circuit based on MEMS acceleration transducers can will survey
The impact measured, vibration signal pass to the MCU of intelligent electric energy meter, and the MCU of intelligent electric energy meter is at once by 3-axis acceleration signal
Digital processing is carried out, after calculating angle of inclination suffered by current intelligent electric energy meter, rate, displacement, impact condition, will be subject to
The time of attack, current power information write-in EEPROM carry out suspicious event record, if power supply is normal, pass through intelligent electricity
PLC communication module that can be built in table or GPRS wireless communication modules are by suspicious event information reporting to centralized automatic meter-reading
The management main website of system；If the intelligent electric energy meter power-off attacked, first time for putting into operation can be being re-powered, stood
The main website that suspicious event is reported to automatic meter reading system is carved, prompts inspector to on-site verification, it would be possible to stealing loss occur
It is reduced to minimum degree.Can be when similar violence electricity stealing just take place, just energy active reporting is to centralized automatic meter-reading
System after inspector is notified to reach scene, can directly read the suspicious actions record of intelligent electric energy meter by infrared palm machine,
The time attacked, number are grasped, convenient for analyzing field condition.Power department loss will so be greatly reduced, can effectively be hit
Electricity stealing.Become active anti-electricity-theft by passive type is anti-electricity-theft：That stealing first occurs in the past, then coming few months find line
Damage is abnormal, starts artificial by-line road afterwards, by user's investigation, the anti-electricity-theft flow of passive type of key monitoring.It is electricity stealing now
When just having occurred or having carried out, the suspicious actions of user, power supply management can be just found at once in the main website of automatic meter reading system
Inspector can rush for scene at once, can greatly promote the efficiency and effect of work, become active anti-electricity-theft.Also,
In intelligent electric energy meter burglar-proof electric circuit based on MEMS acceleration transducers, the power consumption of MEMS acceleration transducers is extremely low, 3.3V
During voltage, for power consumption less than 25 μ A, power consumption is 0.1 μ A under standby mode, can perfectly be applied to intelligent electric energy under measurement pattern
It inside table, is worked using the power cut-off recording battery inside intelligent electric energy meter during power failure, when power supply is worked using system power supply.So
Whether intelligent electric energy meter, which is powered, can accomplish the monitoring of suspicious actions or not, it is anti-electricity-theft to be active anti-electricity-theft to become passive type.
Solve its technical problem the technical solution adopted is that, a kind of intelligent electric energy meter based on MEMS acceleration transducers is prevented
Stealing circuit, it is characterized in that：It include single chip circuit respectively with MEMS acceleration sensor circuits, memory module circuit, temperature
Spend measuring circuit electrical connection.
The single chip circuit includes：Microcontroller U1 and resistance R124, capacitance C45-C49, crystal oscillator F1, F2 are connected.
The microcontroller U1 uses model 78F1166 microcontrollers.
The MEMS acceleration sensor circuits are MEMS acceleration transducers U2, MEMS acceleration transducer U2's
PULSE ports are connected with the PULSE ports of microcontroller U1；The CS ports of MEMS acceleration transducers U2 and the CS ends of microcontroller U1
Mouth connection；The SDO ports of MEMS acceleration transducers U2 are connected with the SDO ports of microcontroller U1；MEMS acceleration transducers U2
SDI ports be connected with the SDI ports of microcontroller U1；The SCLK ports of MEMS acceleration transducers U2 and the SCLK of microcontroller U1
Port connects.
The MEMS acceleration transducers U2 uses model ADXL345 number 3-axis acceleration sensors.
The memory module circuit is electrically connected including memory U3 with resistance R93, the SCL1 ports of memory U3 and list
The SCL1 ports connection of piece machine U1, the SDA1 ports of memory U3 are connected with the SDA1 ports of microcontroller U1.
The temperature measuring circuit is electrically connected including temperature sensor U4 with resistance R130, the DATA of temperature sensor U4
Port is connected with the DATA ports of microcontroller U1.
A kind of the advantages of intelligent electric energy meter burglar-proof electric circuit based on MEMS acceleration transducers of the present invention, is embodied in：
The real time temperature of temperature sensor U4 is read by microcontroller U1, then MEMS is accelerated according to current real time temperature
Degree sensor U2 does temperature-compensating, and the scope of temperature-compensating is -40 DEG C to+80 DEG C, and every 10 DEG C are done a temperature-compensating, compensation point
Have -40 DEG C, -30 DEG C ..., 0 DEG C, 10 DEG C ..., 80 DEG C of totally 13 compensation points, it is ensured that MEMS acceleration transducers U2 is operated in height
Precision state.Interrupt output can be generated at once if MEMS acceleration transducers U2 detects impact signal to PULSE ports,
Interrupting input the mouth PULSE, microcontroller U1 that the interrupt output is connected to microcontroller U1 respond interruption at once, do suspicious event detection and
Record, and active reporting is started by the power line carrier module or GPRS module of intelligent electric energy meter itself immediately.Microcontroller U1
At every 0.5 second, the 3-axis acceleration value of MEMS acceleration transducers U2 is read, calculates angle of inclination, rate, the position of electric energy meter
The mobile status such as shifting, once run-off the straight, illegal movement, then do suspicious event detection and record, and pass through intelligence immediately at once
The power line carrier module or GPRS module of electric energy meter itself start active reporting.
By being applied on intelligent electric energy meter for MEMS acceleration transducers creativeness, it is anti-electricity-theft to be active anti-to become passive type
Stealing.It is so formally installed to after user scene comes into operation in intelligent electric energy meter, passes through power supply management department by installing electrician
Infrared palm machine, using cipher mode transmission enable MEMS acceleration transducers instruct, after intelligent electric energy meter receives instruction, open
The measurement function of MEMS acceleration transducers, once game clock lid, inclination, vibrations occur for intelligent electric energy meter；Or by electric drill
When impact external force is attacked, the intelligent electric energy meter burglar-proof electric circuit based on MEMS acceleration transducers built in intelligent electric energy meter
The impact measured, vibration signal can be passed to the MCU of intelligent electric energy meter by MEMS acceleration transducers U2, intelligent electric energy meter
3-axis acceleration signal is done digital processing by MCU at once, calculate angle of inclination suffered by current intelligent electric energy meter, rate,
Displacement, impact condition, after by the time under attack, current power information write-in EEPROM carry out suspicious event record, such as
Fruit power supply is normal, then will be suspicious by the PLC communication module built in intelligent electric energy meter or GPRS wireless communication modules
Event information is reported to the management main website of automatic meter reading system；If the intelligent electric energy meter power-off attacked, can be on again
The first time that electricity puts into operation, at once suspicious event be reported to the main website of automatic meter reading system, prompt inspector to live
It verifies, it would be possible to stealing loss occur and be reduced to minimum degree.Can when similar violence electricity stealing just takes place,
With regard to energy active reporting to automatic meter reading system, after inspector is notified to reach scene, can intelligence be directly read by infrared palm machine
The suspicious actions record of energy electric energy meter, grasps the time attacked, number, convenient for analyzing field condition.To so it greatly reduce
Power department loses, and can effectively hit electricity stealing.Become active anti-electricity-theft by passive type is anti-electricity-theft：It was first to steal in the past
Electricity, then coming few months discovery line loss is abnormal, starts artificial by-line road afterwards, the passive type by user's investigation, key monitoring is prevented
Stealing flow.When being that electricity stealing has just occurred or carried out now, just can at once it be found in the main website of automatic meter reading system
The suspicious actions of user, power supply management inspector can rush for scene at once, can greatly promote the efficiency and effect of work,
Become active anti-electricity-theft.Also, in the intelligent electric energy meter burglar-proof electric circuit based on MEMS acceleration transducers, MEMS acceleration
Its power consumption of sensor U2 is extremely low, and during 3.3V voltages, for power consumption less than 25 μ A, power consumption is 0.1 μ A under standby mode, can under measurement pattern
The power cut-off recording battery inside intelligent electric energy meter is used to work to be perfectly applied to inside intelligent electric energy meter, during power failure, power supply
When worked using system power supply.Whether so intelligent electric energy meter power supply can accomplish the monitoring of suspicious actions or not, become passive type
Anti-electricity-theft is active anti-electricity-theft.The thief-proof circuit of the intelligent electric energy meter based on MEMS acceleration transducers of the present invention can monitor respectively
Kind violence stealing or high-tech stealing mode can monitor position, the angle of inclination of intelligent electric energy meter in itself etc. and change extremely.And
Monitoring result is started into active reporting to centralized automatic meter-reading by the power line carrier module or GPRS module of intelligent electric energy meter itself
The main website of system perfectly make use of the existing network facilities, without live networking, rely solely on the centralized automatic meter-reading of electric system
Network is achieved that real time monitoring, real time alarm function.MEMS acceleration transducers U2 uses model ADXL345, it can be with
Static weight acceleration is measured in tilt detection application, dynamic acceleration caused by movement or impact can also be measured, it is high
1.0 ° of angle change can be not measured in resolution ratio (4mg/LSB).The device provides a variety of special detection functions：It is living
Dynamic and inactive detection function, detect the presence of movement occur and arbitrary axis on acceleration whether be more than user setting limit
Value, tap detection function can detect click and double-click action.Existing intelligent electric energy meter is relied on, the present invention accelerates MEMS
Degree sensor is creative to be applied in intelligent electric energy meter, is analyzed and processed, can be realized with reference to the software of intelligent electric energy meter microcontroller
It is anti-electricity-theft to be active anti-electricity-theft to become passive type for violence stealing or the actively monitoring of high-tech stealing.
Description of the drawings
Fig. 1 is a kind of intelligent electric energy meter burglar-proof electric circuit principle box based on MEMS acceleration transducers of the present invention
Figure；
Fig. 2 is 1 schematic diagram of single chip circuit in Fig. 1；
Fig. 3 is 2 schematic diagram of MEMS acceleration transducers in Fig. 1；
Fig. 4 is 3 schematic diagram of memory module circuit in Fig. 1；
Fig. 5 is 4 schematic diagram of temperature measuring circuit in Fig. 1；
Fig. 6 is MEMS acceleration transducer temperature-compensating flow charts；
Fig. 7 is the movable inclined process chart of intelligent electric energy meter；
Fig. 8 is impact signal process chart.
Specific embodiment
A kind of detailed embodiment of intelligent electric energy meter burglar-proof electric circuit based on MEMS acceleration transducers of the present invention
It is as follows：
With reference to Fig. 1-Fig. 8, a kind of intelligent electric energy meter burglar-proof electric circuit based on MEMS acceleration transducers of the invention, bag
It includes：Single chip circuit 1 is electrically connected respectively with MEMS acceleration sensor circuits 2, memory module circuit 3, temperature measuring circuit 4.
With reference to Fig. 2, the single chip circuit 1 includes：Microcontroller U1 and resistance R124, capacitance C45-C49, crystal oscillator F1,
F2 is connected.The microcontroller U1 uses model 78F1166 microcontrollers.
With reference to Fig. 3, MEMS acceleration sensor circuits include：MEMS acceleration transducers U2, MEMS acceleration transducer
The PULSE ports of U2 are connected with the PULSE ports of microcontroller U1, and the CS ports of MEMS acceleration transducers U2 are with microcontroller U1's
CS ports connect, and the SDO ports of MEMS acceleration transducers U2 are connected with the SDO ports of microcontroller U1, MEMS acceleration sensings
The SDI ports of device U2 are connected with the SDI ports of microcontroller U1, and the SCLK ports of MEMS acceleration transducers U2 are with microcontroller U1's
SCLK ports connect.The MEMS acceleration transducers U2 uses model ADXL345 number 3-axis acceleration sensors.
With reference to Fig. 4, memory module circuit 3 includes：Memory U3 is electrically connected with resistance R93, the SCL1 ports of memory U3
It is connected with the SCL1 ports of microcontroller U1, the SDA1 ports of memory U3 are connected with the SDA1 ports of microcontroller U1.
With reference to Fig. 5, temperature measuring circuit 4 includes：Temperature sensor U4 is electrically connected with resistance R130, temperature sensor U4's
DATA ports are connected with the DATA ports of microcontroller U1.
With reference to Fig. 2, microcontroller U1 uses the 78F1166 of auspicious Sha, in each whole time, in order to realize that MEMS acceleration passes
The high-acruracy survey of sensor U2, it is necessary to do the temperature-compensating processing of MEMS acceleration transducer U2 models ADXL345, mend by temperature
The scope repaid is -40 DEG C to+80 DEG C, it is ensured that in -40 DEG C to+75 DEG C of the operating temperature range of intelligent electric energy meter, MEMS accelerates
Spend the precision that sensor U2 keeps higher, every 10 DEG C are done a temperature-compensating, compensation point have -40 DEG C, -30 DEG C ..., 0 DEG C, 10
DEG C ..., 80 DEG C of totally 13 compensation points.Microcontroller U1 does the software flow pattern of temperature-compensating referring to Fig. 6.The SDI of microcontroller U1,
SCLK, CS, SDO form the SPI interface of a simulation, and the MEMS acceleration transducer U2 corresponding ports with Fig. 3 connect, and realize
SPI is communicated.It is communicated in whole moment second microcontroller U1 by SPI interface with the MEMS acceleration transducers U2 of Fig. 3, reads three axis and add
Then velocity amplitude carries out calculating processing, the software flow pattern of microcontroller U1 is referring to Fig. 7.Interrupting input mouth PULSE map interlinkings 3
The correspondence interrupt output port of MEMS acceleration transducers U2, once the interrupt signal of MEMS acceleration transducers U2 is received, then
Microcontroller U1 starts interrupt processing flow referring to Fig. 8.
With reference to Fig. 3, MEMS acceleration sensor circuits are MEMS number 3-axis acceleration sensors U2 using ADI's
ADXL345, it is a low-power consumption, small-sized, digital 3 axis accelerometer, and for high resolution up to 13, measurement range reaches ± 16g.Number
Word output data is 16 complement of two's two's complement forms, can be accessed by SPI interface, tetra- ports of SDI, SCLK, CS, SDO are connected to
The corresponding ports of Fig. 2 microcontrollers U1, microcontroller U1 timings read 3-axis acceleration value, angle of inclination, rate, displacement are done for software
Calculating.The device can provide a variety of special detection functions：Movable and inactive detection function detect the presence of movement occur and
Whether the acceleration on arbitrary axis, which be more than the limit value of user setting, taps detection function can detect and click and double-click action.This
A little functions may map to interrupt output pin PULSE, the correspondence interrupting input interface of the interrupt output map interlinking 2, for microcontroller
U1 softwares do corresponding processing.
With reference to Fig. 4, the memory U3 of memory module circuit uses the FM24C512D of Shanghai Fudan Microelectronics, by SCL1,
SDA1 is connected to the corresponding ports of microcontroller U1, realizes I2C communications.Its memory space is used for preserving 13 first there are three purposes
The offset correction values of temperature compensation point and compensation mark；Secondly because calculating angle of inclination has arctan function calculating, in order to subtract
Few calculation amount, is reduced the expense of microcontroller, is handled using look-up table, when precision is 0.1 °, it is necessary to preserve 1800 calculating
Value；Last remaining space is used as suspicious event record storage area, and moment, duration, punching occurs to record suspicious event
Hit number, the having in real time of electric energy meter, reactive energy data block when event occurs.
With reference to Fig. 5, the temperature sensor U4 of temperature measuring circuit uses the DS18B20U of Maxim companies, the sensor
Temperature detection range is -55 DEG C to+125 DEG C, fully meets the operating temperature range of intelligent electric energy meter, single bus data port
The U1 corresponding ports of DATA map interlinkings 2 are controlled by microcontroller and read real time temperature.
With reference to Fig. 6, microcontroller U1 does the temperature-compensating processing of MEMS acceleration transducers U2, and flow includes following step
Suddenly：
1) whole time is noJudge whether it is whole time, only whole time just does temperature-compensating processing, in Fig. 6
Frame 100 shown in.
2) it is no that MEMS acceleration transducers are enabledJudge whether to enable MEMS acceleration transducer U2, in intelligent electric energy meter
It installs when coming into operation, by installing special infrared palm machine of the electrician by power supply bureau, uses cipher mode that intelligent electric energy is set
Table opens MEMS acceleration transducers U2 measurement functions, so that intelligent electric energy meter is not enabled in transport, calibrating, installation
MEMS acceleration transducer U2, only just enable after installation is complete, as shown in the frame 101 in Fig. 6.
3) read thermal module and obtain real time temperature.The measurement temperature of temperature sensor U4 in Fig. 5 is read, in Fig. 6
Shown in frame 102.
4) current reference temperature does not do temperature-compensatingTemperature-compensating mark of the reading and saving in Fig. 4 memory modules U3, sentences
Whether disconnected Current Temperatures did temperature operation, as shown in the frame 103 in Fig. 6.
5) according to Current Temperatures, the offset data of corresponding temperature scope when reading is dispatched from the factory.It is read out of Fig. 4 memory U3
The offset data of 13 preset temperature spots during factory, have -40 DEG C, -30 DEG C ..., 0 DEG C, 10 DEG C ..., 80 DEG C of totally 13 temperature spots,
As shown in the frame 104 in Fig. 6.According to present real-time temperature location, the offset data for corresponding to scope is obtained.
6) temperature-compensating of MEMS acceleration transducers is done.The offset data that will be obtained in T5, the MEMS for being written to Fig. 3 add
In velocity sensor U2, temperature-compensating processing is completed, as shown in the frame 105 in Fig. 6.
7) set current reference temperature has been compensated for indicating, removes other temperature range compensation marks.Current reference temperature
It has done excess temperature to compensate for, setting has been compensated for indicating, removes the compensation mark of other temperature ranges, then writes compensation mark
Enter into the U3 of Fig. 4 memory modules and preserve, as shown in the frame 106 in Fig. 6.
With reference to Fig. 7, after microcontroller U1 reads the 3-axis acceleration value of digital 3-axis acceleration sensor U2 at whole moment second,
Calculating angle of inclination, rate, the process flow of displacement include the following steps：
(1) whole moment second is noJudge whether it is whole moment second, only whole moment second just reads and calculating processing, such as Fig. 7
In frame 200 shown in.
(2) it is no that MEMS acceleration transducers are enabledJudge whether to enable MEMS acceleration transducers U2.It is thrown installing
Enter in use, by electrician by the special infrared palm machine of power supply bureau, intelligent electric energy meter is set using cipher mode, to enable number
3-axis acceleration sensor U2 measures function.So so that intelligent electric energy meter does not enable digital three axis in transport, calibrating, installation
Acceleration transducer U2, only just enables after installation is complete, as shown in the frame 201 in Fig. 7.
(3) MEMS acceleration transducer 3-axis acceleration data are read.Read Fig. 3 MEMS acceleration transducers U2 measurements
3-axis acceleration data, as shown in the frame 202 in Fig. 7.
(4) angle of inclination, rate, displacement are calculated according to 3-axis acceleration.It is measured according to Fig. 3 MEMS acceleration transducers U2
3-axis acceleration data come angle of inclination when calculating static state, rate and displacement when calculating illegal mobile.Wherein inclination angle
The test philosophy of degree is, when intelligent electric energy meter is static, can be subject to the acceleration of gravity of 1g, under this constraint, angle of inclination
Calculation formula it is as follows：
Wherein：
ɑ is angle of inclination；
Ax, Ay, Ay are the 3-axis acceleration value of MEMS numbers 3-axis acceleration sensor measurement.
Accordingly, the angle of inclination of intelligent electric energy meter can be obtained.Rate, the basic test principle of displacement are, to acceleration
Integration can once obtain rate, and displacement can be once obtained to rate signal integration, and microcontroller U1 can be obtained current by software calculating
Rate, the numerical value of displacement, provide evidence for illegal movement.As shown in the frame 203 in Fig. 7.
(5) electric energy meter tilts, illegal movement judgesJudge the current angle of inclination of intelligent electric energy meter or rate, displacement
Whether illegal movement is triggered, as shown in the frame 204 in Fig. 7.
Overwriting is done in (6) 10 minutesIf forming illegal mobile, judge the event whether within ten minutes
Overwriting is done, as shown in the frame 205 in Fig. 7.
(7) suspicious event record is done, starts active report of event flow.Start to do suspicious event record, will occur the moment,
Duration, number of shocks, the having in real time of electric energy meter when event occurs, the information such as reactive energy data block are added in record, after
Record is saved in the U3 of Fig. 4 memories, it is rear to start active report of event flow, suspicious event is passed through into intelligent electric energy meter sheet
The power line carrier module or GPRS module of body, the main website of active reporting to automatic meter reading system, such as 206 institute of frame in Fig. 7
Show.
(8) duration adds up.If event has recorded, the lasting event of event starts to do accumulation process,
It submits necessary information for subsequent analysis event, as shown in the frame 207 in Fig. 7.
With reference to Fig. 8, the interrupt output PULSE signal of MEMS acceleration transducers U2 is directly connected in the correspondence of microcontroller U1
Disconnected input port, what the acceleration which is configured on arbitrary axis was triggered and clicked or double-clicked when being more than the limit value of user setting
It is triggered after tapping detection.Microcontroller U1 uses interrupt mode, does the process flow impacted, shaken, includes the following steps：
1. anti-tampering, Glitch Filter.Digital filtering processing is added in, disappear shake, anti-tampering, as shown in the frame 300 in Fig. 8
2. signal is effectiveEffective MEMS acceleration transducers U2 interrupt signals are determined whether, such as the frame 301 in Fig. 8
It is shown.
3. do overwriting in 10 minutesJudge whether to have done overwriting within ten minutes, such as 302 institute of frame in Fig. 8
Show.
4. doing suspicious event record, start active report of event flow.Start to do suspicious event record, will occur the moment,
Duration, number of shocks, the having in real time of electric energy meter when impact occurs, the information such as reactive energy data block are added in record, after
Record is saved in Fig. 4 memories U3, it is rear to start active report of event flow, by suspicious event by intelligent electric energy meter in itself
Power line carrier module or GPRS module, the main website of active reporting to automatic meter reading system, as shown in the frame 303 in Fig. 8.
5. number of shocks increases.If this event has recorded, the number of shocks of event increases, for follow-up point
Analysis event is submitted necessary information, as shown in the frame 304 in Fig. 7.
A kind of all electronic components of intelligent electric energy meter burglar-proof electric circuit based on MEMS acceleration transducers of the present invention
It is commercial product.The software program foundation of the present invention automatically controls, computer processing technology establishment, is those skilled in the art
Known technology.
Embodiments of the present invention are simultaneously not restricted to the described embodiments, other any Spirit Essences without departing from the present invention
With made under principle change, modification, replacement, combine, simplification, should be equivalent substitute mode, be included in the present invention's
Within protection domain.
Claims (7)
1. a kind of intelligent electric energy meter burglar-proof electric circuit based on MEMS acceleration transducers, it is characterized in that：It includes：Monolithic is electromechanical
Road is electrically connected respectively with MEMS acceleration sensor circuits, memory module circuit, temperature measuring circuit.
2. a kind of intelligent electric energy meter burglar-proof electric circuit based on MEMS acceleration transducers according to claim 1, special
Sign is：The single chip circuit includes：Microcontroller U1 and resistance R124, capacitance C45-C49, crystal oscillator F1, F2 are connected.
3. a kind of intelligent electric energy meter burglar-proof electric circuit based on MEMS acceleration transducers according to claim 2, special
Sign is：The microcontroller U1 uses model 78F1166 microcontrollers.
4. a kind of intelligent electric energy meter burglar-proof electric circuit based on MEMS acceleration transducers according to claim 1, special
Sign is：The MEMS acceleration sensor circuits are the PULSE of MEMS acceleration transducers U2, MEMS acceleration transducer U2
Port is connected with the PULSE ports of microcontroller U1；The CS ports of MEMS acceleration transducers U2 connect with the CS ports of microcontroller U1
It connects；The SDO ports of MEMS acceleration transducers U2 are connected with the SDO ports of microcontroller U1；The SDI of MEMS acceleration transducers U2
Port is connected with the SDI ports of microcontroller U1；The SCLK ports of MEMS acceleration transducers U2 and the SCLK ports of microcontroller U1
Connection.
5. a kind of intelligent electric energy meter burglar-proof electric circuit based on MEMS acceleration transducers according to claim 4, special
Sign is：The MEMS acceleration transducers U2 is sensed using model ADXL345 numbers 3-axis acceleration.
6. a kind of intelligent electric energy meter burglar-proof electric circuit based on MEMS acceleration transducers according to claim 1, special
Sign is：The memory module circuit is electrically connected including memory U3 with resistance R93, the SCL1 ports of memory U3 and microcontroller
The SCL1 ports connection of U1, the SDA1 ports of memory U3 are connected with the SDA1 ports of microcontroller U1.
7. a kind of intelligent electric energy meter burglar-proof electric circuit based on MEMS acceleration transducers according to claim 6, special
Sign is：The temperature measuring circuit is electrically connected including temperature sensor U4 with resistance R130, the DATA ends of temperature sensor U4
Mouth is connected with the DATA ports of microcontroller U1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711368779.2A CN108072778A (en) | 2017-12-18 | 2017-12-18 | A kind of intelligent electric energy meter burglar-proof electric circuit based on MEMS acceleration transducers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711368779.2A CN108072778A (en) | 2017-12-18 | 2017-12-18 | A kind of intelligent electric energy meter burglar-proof electric circuit based on MEMS acceleration transducers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108072778A true CN108072778A (en) | 2018-05-25 |
Family
ID=62158460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711368779.2A Pending CN108072778A (en) | 2017-12-18 | 2017-12-18 | A kind of intelligent electric energy meter burglar-proof electric circuit based on MEMS acceleration transducers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108072778A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113341186A (en) * | 2021-07-13 | 2021-09-03 | 国网江苏省电力有限公司营销服务中心 | Metering environment sensing device suitable for electric energy meter |
| WO2021188305A1 (en) * | 2020-03-18 | 2021-09-23 | Landis+Gyr Innovations, Inc. | Electric meter installation issue detection based on orientation change |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1648675A (en) * | 2005-03-25 | 2005-08-03 | 杭州利尔达单片机技术有限公司 | Single phase electric larceny preventing electricity meter and method for preventing electric larceny |
| US20070103278A1 (en) * | 2005-09-16 | 2007-05-10 | Denso Corporation | Antitheft system |
| CN101308169A (en) * | 2007-05-17 | 2008-11-19 | 江苏林洋电子有限公司 | Intelligent electricity anti-theft method and its electrical energy meter |
| CN201184901Y (en) * | 2008-04-22 | 2009-01-21 | 深圳浩宁达仪表股份有限公司 | Transmission line measuring apparatus with tekecommunication and anti-theft electricity function |
| CN101570177A (en) * | 2009-05-11 | 2009-11-04 | 卫群 | ESP inertial sensor combination and testing method thereof |
| CN104316739A (en) * | 2014-11-11 | 2015-01-28 | 湖北索瑞电气有限公司 | Electricity meter metering box circuit preventing electricity larceny based on four communication modes |
| CN104359481A (en) * | 2014-11-12 | 2015-02-18 | 中国兵器工业集团第二一四研究所苏州研发中心 | Miniature inertia measurement unit based on FPGA (field programmable gate array) |
| CN205157612U (en) * | 2015-12-11 | 2016-04-13 | 国网山东省电力公司菏泽供电公司 | Anti -electricity -theft ammeter case of easily installing |
| CN106980102A (en) * | 2017-05-19 | 2017-07-25 | 中国电力科学研究院 | The device for monitoring running and method of a kind of electric energy meter field detection device |
| CN207923985U (en) * | 2017-12-18 | 2018-09-28 | 深圳市江机实业有限公司 | A kind of intelligent electric energy meter burglar-proof electric circuit based on MEMS acceleration transducers |
-
2017
- 2017-12-18 CN CN201711368779.2A patent/CN108072778A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1648675A (en) * | 2005-03-25 | 2005-08-03 | 杭州利尔达单片机技术有限公司 | Single phase electric larceny preventing electricity meter and method for preventing electric larceny |
| US20070103278A1 (en) * | 2005-09-16 | 2007-05-10 | Denso Corporation | Antitheft system |
| CN101308169A (en) * | 2007-05-17 | 2008-11-19 | 江苏林洋电子有限公司 | Intelligent electricity anti-theft method and its electrical energy meter |
| CN201184901Y (en) * | 2008-04-22 | 2009-01-21 | 深圳浩宁达仪表股份有限公司 | Transmission line measuring apparatus with tekecommunication and anti-theft electricity function |
| CN101570177A (en) * | 2009-05-11 | 2009-11-04 | 卫群 | ESP inertial sensor combination and testing method thereof |
| CN104316739A (en) * | 2014-11-11 | 2015-01-28 | 湖北索瑞电气有限公司 | Electricity meter metering box circuit preventing electricity larceny based on four communication modes |
| CN104359481A (en) * | 2014-11-12 | 2015-02-18 | 中国兵器工业集团第二一四研究所苏州研发中心 | Miniature inertia measurement unit based on FPGA (field programmable gate array) |
| CN205157612U (en) * | 2015-12-11 | 2016-04-13 | 国网山东省电力公司菏泽供电公司 | Anti -electricity -theft ammeter case of easily installing |
| CN106980102A (en) * | 2017-05-19 | 2017-07-25 | 中国电力科学研究院 | The device for monitoring running and method of a kind of electric energy meter field detection device |
| CN207923985U (en) * | 2017-12-18 | 2018-09-28 | 深圳市江机实业有限公司 | A kind of intelligent electric energy meter burglar-proof electric circuit based on MEMS acceleration transducers |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021188305A1 (en) * | 2020-03-18 | 2021-09-23 | Landis+Gyr Innovations, Inc. | Electric meter installation issue detection based on orientation change |
| US11536745B2 (en) | 2020-03-18 | 2022-12-27 | Landis+Gyr Innovations, Inc. | Electric meter installation issue detection based on orientation change |
| CN113341186A (en) * | 2021-07-13 | 2021-09-03 | 国网江苏省电力有限公司营销服务中心 | Metering environment sensing device suitable for electric energy meter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104198829B (en) | Electromagnetic radiation measuring device and measuring method with humiture self-correction based on ARM | |
| US20070241930A1 (en) | Automatic Meter-Reading Interface for Fluid Sensing Meters | |
| CN104895611B (en) | A kind of intelligence sensor measuring mine dust concentration | |
| CN102494729B (en) | Intelligent gas meter metering device and signal processing system | |
| CN203705667U (en) | Environment quality and meteorology parameter automatic monitoring device of unmanned base station | |
| CN108072778A (en) | A kind of intelligent electric energy meter burglar-proof electric circuit based on MEMS acceleration transducers | |
| CN105094070B (en) | The operation monitoring system and its operating method of passive outdoor equipment | |
| CN101021726A (en) | Superconducting gravimeter double-temperature refrigerating expander intelligent monitor | |
| CN207923985U (en) | A kind of intelligent electric energy meter burglar-proof electric circuit based on MEMS acceleration transducers | |
| CN206020991U (en) | Water resource well electricity dual control management system | |
| CN109493464A (en) | Low power-consumption intelligent opal door lock monitoring system and door lock monitoring method | |
| CN203422791U (en) | Anti-demounting intelligent gas meter | |
| CN210221888U (en) | Moisture meter system convenient to data acquisition | |
| CN202329722U (en) | Intelligent gas meter metering device | |
| CN208351019U (en) | A kind of meteorologic parameter comprehensive monitor | |
| CN2831282Y (en) | Prewarner of monitoring environment | |
| CN205719234U (en) | A kind of based on MEMS low-frequency vibration displacement transducer | |
| CN202041275U (en) | Device for detecting and recording shell opening time in real time | |
| CN205748687U (en) | Temperature hot-fluid is wireless scan tester | |
| CN205594150U (en) | Electric energy meter of electric energy meter calibration alarm system and this system of application based on singlechip | |
| CN205879263U (en) | Warm -pressing integration pitot tube flowmeter | |
| KR20090013866A (en) | Electronic type watt hour meter using nand flash memory and method for saving wave data thereof | |
| CN206388316U (en) | The Internet of Things netlist tool communicated based on 4G | |
| CN206038943U (en) | Portable automatic meteorological station calibration equipment | |
| CN201984547U (en) | Structural device capable of sensing opening of shell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |